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move kyclogic into libtalerkyclogic

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This commit is contained in:
Christian Grothoff 2022-08-08 15:22:45 +02:00
parent d4fb0695ce
commit ff48ada7d5
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GPG Key ID: 939E6BE1E29FC3CC
8 changed files with 583 additions and 169 deletions
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1
.gitignore vendored
View File

@ -163,3 +163,4 @@ po/remove-potcdate.sed
src/include/taler_dbevents.h
src/bank-lib/taler-exchange-wire-gateway-client
src/exchange/taler-exchange-drain
src/kyclogic/taler-exchange-kyc-tester

2
src/exchange/Makefile.am
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@ -132,7 +132,6 @@ taler_exchange_httpd_SOURCES = \
taler-exchange-httpd_deposits_get.c taler-exchange-httpd_deposits_get.h \
taler-exchange-httpd_extensions.c taler-exchange-httpd_extensions.h \
taler-exchange-httpd_keys.c taler-exchange-httpd_keys.h \
taler-exchange-httpd_kyc.c taler-exchange-httpd_kyc.h \
taler-exchange-httpd_kyc-check.c taler-exchange-httpd_kyc-check.h \
taler-exchange-httpd_kyc-proof.c taler-exchange-httpd_kyc-proof.h \
taler-exchange-httpd_kyc-wallet.c taler-exchange-httpd_kyc-wallet.h \
@ -177,6 +176,7 @@ taler_exchange_httpd_LDADD = \
$(top_builddir)/src/mhd/libtalermhd.la \
$(top_builddir)/src/json/libtalerjson.la \
$(top_builddir)/src/exchangedb/libtalerexchangedb.la \
$(top_builddir)/src/kyclogic/libtalerkyclogic.la \
$(top_builddir)/src/util/libtalerutil.la \
$(top_builddir)/src/extensions/libtalerextensions.la \
-lmicrohttpd \

4
src/exchange/taler-exchange-httpd_kyc-webhook.c
View File

@ -26,7 +26,7 @@
#include <pthread.h>
#include "taler_json_lib.h"
#include "taler_mhd_lib.h"
#include "taler-exchange-httpd_kyc.h"
#include "taler_kyclogic_lib.h"
#include "taler-exchange-httpd_kyc-webhook.h"
#include "taler-exchange-httpd_responses.h"
@ -263,7 +263,7 @@ handler_kyc_webhook_generic (
rc->rh_cleaner = &clean_kwh;
if (GNUNET_OK !=
TEH_kyc_get_logic (kwh->logic,
TALER_KYCLOGIC_kyc_get_logic (kwh->logic,
&kwh->plugin,
&kwh->pd))
{

1
src/include/Makefile.am
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@ -17,6 +17,7 @@ talerinclude_HEADERS = \
taler_exchangedb_plugin.h \
taler_extensions.h \
taler_fakebank_lib.h \
taler_kyclogic_lib.h \
taler_kyclogic_plugin.h \
taler_json_lib.h \
taler_testing_lib.h \

80
src/exchange/taler-exchange-httpd_kyc.h → src/include/taler_kyclogic_lib.h
View File

@ -14,32 +14,32 @@
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file taler-exchange-httpd_kyc.h
* @brief KYC API for the exchange
* @file taler_kyclogic_lib.h
* @brief server-side KYC API
* @author Christian Grothoff
*/
#ifndef TALER_EXCHANGE_HTTPD_KYC_H
#define TALER_EXCHANGE_HTTPD_KYC_H
#ifndef TALER_KYCLOGIC_LIB_H
#define TALER_KYCLOGIC_LIB_H
#include <microhttpd.h>
#include "taler_exchangedb_plugin.h"
#include "taler_kyclogic_plugin.h"
#include <taler_exchangedb_plugin.h>
#include <taler_kyclogic_plugin.h>
/**
* Enumeration for our KYC user types.
*/
enum TEH_KycUserType
enum TALER_KYCLOGIC_KycUserType
{
/**
* KYC rule is for an individual.
*/
TEH_KYC_UT_INDIVIDUAL = 0,
TALER_KYCLOGIC_KYC_UT_INDIVIDUAL = 0,
/**
* KYC rule is for a business.
*/
TEH_KYC_UT_BUSINESS = 1
TALER_KYCLOGIC_KYC_UT_BUSINESS = 1
};
@ -47,28 +47,28 @@ enum TEH_KycUserType
* Enumeration of possible events that may trigger
* KYC requirements.
*/
enum TEH_KycTriggerEvent
enum TALER_KYCLOGIC_KycTriggerEvent
{
/**
* Customer withdraws coins.
*/
TEH_KYC_TRIGGER_WITHDRAW = 0,
TALER_KYCLOGIC_KYC_TRIGGER_WITHDRAW = 0,
/**
* Merchant deposits coins.
*/
TEH_KYC_TRIGGER_DEPOSIT = 1,
TALER_KYCLOGIC_KYC_TRIGGER_DEPOSIT = 1,
/**
* Wallet receives P2P payment.
*/
TEH_KYC_TRIGGER_P2P_RECEIVE = 2,
TALER_KYCLOGIC_KYC_TRIGGER_P2P_RECEIVE = 2,
/**
* Wallet balance exceeds threshold.
*/
TEH_KYC_TRIGGER_WALLET_BALANCE = 3
TALER_KYCLOGIC_KYC_TRIGGER_WALLET_BALANCE = 3
};
@ -84,8 +84,9 @@ enum TEH_KycTriggerEvent
* malformed
*/
enum GNUNET_GenericReturnValue
TEH_kyc_trigger_from_string (const char *trigger_s,
enum TEH_KycTriggerEvent *trigger);
TALER_KYCLOGIC_kyc_trigger_from_string (
const char *trigger_s,
enum TALER_KYCLOGIC_KycTriggerEvent *trigger);
/**
@ -95,7 +96,7 @@ TEH_kyc_trigger_from_string (const char *trigger_s,
* @return human-readable representation of the @a trigger
*/
const char *
TEH_kyc_trigger2s (enum TEH_KycTriggerEvent trigger);
TALER_KYCLOGIC_kyc_trigger2s (enum TALER_KYCLOGIC_KycTriggerEvent trigger);
/**
@ -108,8 +109,8 @@ TEH_kyc_trigger2s (enum TEH_KycTriggerEvent trigger);
* malformed
*/
enum GNUNET_GenericReturnValue
TEH_kyc_user_type_from_string (const char *ut_s,
enum TEH_KycUserType *ut);
TALER_KYCLOGIC_kyc_user_type_from_string (const char *ut_s,
enum TALER_KYCLOGIC_KycUserType *ut);
/**
@ -119,24 +120,24 @@ TEH_kyc_user_type_from_string (const char *ut_s,
* @return human-readable representation of the @a ut
*/
const char *
TEH_kyc_user_type2s (enum TEH_KycUserType ut);
TALER_KYCLOGIC_kyc_user_type2s (enum TALER_KYCLOGIC_KycUserType ut);
/**
* Initialize KYC subsystem. Loads the KYC
* configuration.
* Initialize KYC subsystem. Loads the KYC configuration.
*
* @param cfg configuration to parse
* @return #GNUNET_OK on success
*/
enum GNUNET_GenericReturnValue
TEH_kyc_init (void);
TALER_KYCLOGIC_kyc_init (const struct GNUNET_CONFIGURATION_Handle *cfg);
/**
* Shut down the KYC subsystem.
*/
void
TEH_kyc_done (void);
TALER_KYCLOGIC_kyc_done (void);
/**
@ -155,12 +156,30 @@ TEH_kyc_done (void);
* @param cb_cls closure for @a cb
*/
typedef void
(*TEH_KycAmountIterator)(void *cls,
(*TALER_KYCLOGIC_KycAmountIterator)(void *cls,
struct GNUNET_TIME_Absolute limit,
TALER_EXCHANGEDB_KycAmountCallback cb,
void *cb_cls);
/**
* Call us on KYC processes satisfied for the given
* account. Must match the ``select_satisfied_kyc_processes`` of the exchange database plugin.
*
* @param cls the @e cls of this struct with the plugin-specific state
* @param h_payto account identifier
* @param spc function to call for each satisfied KYC process
* @param spc_cls closure for @a spc
* @return transaction status code
*/
typedef enum GNUNET_DB_QueryStatus
(*TALER_KYCLOGIC_KycSatisfiedIterator)(
void *cls,
const struct TALER_PaytoHashP *h_payto,
TALER_EXCHANGEDB_SatisfiedProviderCallback spc,
void *spc_cls);
/**
* Check if KYC is provided for a particular operation. Returns the best
* provider (configuration section name) that could perform the required
@ -172,6 +191,9 @@ typedef void
* @param event what type of operation is triggering the
* test if KYC is required
* @param h_payto account the event is about
* @param ki callback that returns list of already
* satisfied KYC checks, implemented by ``select_satisfied_kyc_processes`` of the exchangedb
* @param ki_cls closure for @a ki
* @param ai callback offered to inquire about historic
* amounts involved in this type of operation
* at the given account
@ -179,9 +201,11 @@ typedef void
* @return NULL if no check is needed
*/
const char *
TEH_kyc_test_required (enum TEH_KycTriggerEvent event,
TALER_KYCLOGIC_kyc_test_required (enum TALER_KYCLOGIC_KycTriggerEvent event,
const struct TALER_PaytoHashP *h_payto,
TEH_KycAmountIterator ai,
TALER_KYCLOGIC_KycSatisfiedIterator ki,
void *ki_cls,
TALER_KYCLOGIC_KycAmountIterator ai,
void *ai_cls);
@ -194,7 +218,7 @@ TEH_kyc_test_required (enum TEH_KycTriggerEvent event,
* @return #GNUNET_OK on success
*/
enum GNUNET_GenericReturnValue
TEH_kyc_get_logic (const char *provider_section_name,
TALER_KYCLOGIC_kyc_get_logic (const char *provider_section_name,
struct TALER_KYCLOGIC_Plugin **plugin,
struct TALER_KYCLOGIC_ProviderDetails **pd);

12
src/kyclogic/Makefile.am
View File

@ -16,6 +16,17 @@ EXTRA_DIST = \
kyclogic.conf \
kyclogic-oauth2.conf
lib_LTLIBRARIES = \
libtalerkyclogic.la
libtalerkyclogic_la_SOURCES = \
kyclogic_api.c
libtalerkyclogic_la_LIBADD = \
$(top_builddir)/src/util/libtalerutil.la \
-lgnunetutil \
$(XLIB)
bin_PROGRAMS = \
taler-exchange-kyc-tester
@ -23,6 +34,7 @@ taler_exchange_kyc_tester_SOURCES = \
taler-exchange-kyc-tester.c
taler_exchange_kyc_tester_LDADD = \
$(LIBGCRYPT_LIBS) \
libtalerkyclogic.la \
$(top_builddir)/src/mhd/libtalermhd.la \
$(top_builddir)/src/json/libtalerjson.la \
$(top_builddir)/src/util/libtalerutil.la \

259
src/exchange/taler-exchange-httpd_kyc.c → src/kyclogic/kyclogic_api.c
View File

@ -14,25 +14,23 @@
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file taler-exchange-httpd_kyc.c
* @brief KYC API for the exchange
* @file kyclogic_api.c
* @brief server-side KYC API
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler-exchange-httpd.h"
#include "taler-exchange-httpd_kyc.h"
#include "taler_exchangedb_plugin.h"
#include "taler_kyclogic_lib.h"
/**
* Information about a KYC provider.
*/
struct TEH_KycProvider;
struct TALER_KYCLOGIC_KycProvider;
/**
* Abstract representation of a KYC check.
*/
struct TEH_KycCheck
struct TALER_KYCLOGIC_KycCheck
{
/**
* Human-readable name given to the KYC check.
@ -42,7 +40,7 @@ struct TEH_KycCheck
/**
* Array of @e num_providers providers that offer this type of KYC check.
*/
struct TEH_KycProvider **providers;
struct TALER_KYCLOGIC_KycProvider **providers;
/**
* Length of the @e providers array.
@ -52,7 +50,7 @@ struct TEH_KycCheck
};
struct TEH_KycProvider
struct TALER_KYCLOGIC_KycProvider
{
/**
* Name of the provider (configuration section name).
@ -62,7 +60,7 @@ struct TEH_KycProvider
/**
* Array of @e num_checks checks performed by this provider.
*/
struct TEH_KycCheck **provided_checks;
struct TALER_KYCLOGIC_KycCheck **provided_checks;
/**
* Logic to run for this provider.
@ -88,14 +86,14 @@ struct TEH_KycProvider
/**
* Type of user this provider supports.
*/
enum TEH_KycUserType user_type;
enum TALER_KYCLOGIC_KycUserType user_type;
};
/**
* Condition that triggers a need to perform KYC.
*/
struct TEH_KycTrigger
struct TALER_KYCLOGIC_KycTrigger
{
/**
@ -114,7 +112,7 @@ struct TEH_KycTrigger
/**
* Array of @e num_checks checks to apply on this trigger.
*/
struct TEH_KycCheck **required_checks;
struct TALER_KYCLOGIC_KycCheck **required_checks;
/**
* Length of the @e checks array.
@ -124,7 +122,7 @@ struct TEH_KycTrigger
/**
* What event is this trigger for?
*/
enum TEH_KycTriggerEvent trigger;
enum TALER_KYCLOGIC_KycTriggerEvent trigger;
};
@ -143,7 +141,7 @@ static unsigned int num_kyc_logics;
* Array of @e num_kyc_checks known types of
* KYC checks.
*/
static struct TEH_KycCheck **kyc_checks;
static struct TALER_KYCLOGIC_KycCheck **kyc_checks;
/**
* Length of the #kyc_checks array.
@ -153,7 +151,7 @@ static unsigned int num_kyc_checks;
/**
* Array of configured triggers.
*/
static struct TEH_KycTrigger **kyc_triggers;
static struct TALER_KYCLOGIC_KycTrigger **kyc_triggers;
/**
* Length of the #kyc_triggers array.
@ -163,7 +161,7 @@ static unsigned int num_kyc_triggers;
/**
* Array of configured providers.
*/
static struct TEH_KycProvider **kyc_providers;
static struct TALER_KYCLOGIC_KycProvider **kyc_providers;
/**
* Length of the #kyc_providers array.
@ -172,18 +170,19 @@ static unsigned int num_kyc_providers;
enum GNUNET_GenericReturnValue
TEH_kyc_trigger_from_string (const char *trigger_s,
enum TEH_KycTriggerEvent *trigger)
TALER_KYCLOGIC_kyc_trigger_from_string (const char *trigger_s,
enum TALER_KYCLOGIC_KycTriggerEvent *
trigger)
{
struct
{
const char *in;
enum TEH_KycTriggerEvent out;
enum TALER_KYCLOGIC_KycTriggerEvent out;
} map [] = {
{ "withdraw", TEH_KYC_TRIGGER_WITHDRAW },
{ "deposit", TEH_KYC_TRIGGER_DEPOSIT },
{ "merge", TEH_KYC_TRIGGER_P2P_RECEIVE },
{ "balance", TEH_KYC_TRIGGER_WALLET_BALANCE },
{ "withdraw", TALER_KYCLOGIC_KYC_TRIGGER_WITHDRAW },
{ "deposit", TALER_KYCLOGIC_KYC_TRIGGER_DEPOSIT },
{ "merge", TALER_KYCLOGIC_KYC_TRIGGER_P2P_RECEIVE },
{ "balance", TALER_KYCLOGIC_KYC_TRIGGER_WALLET_BALANCE },
{ NULL, 0 }
};
@ -202,17 +201,17 @@ TEH_kyc_trigger_from_string (const char *trigger_s,
const char *
TEH_kyc_trigger2s (enum TEH_KycTriggerEvent trigger)
TALER_KYCLOGIC_kyc_trigger2s (enum TALER_KYCLOGIC_KycTriggerEvent trigger)
{
switch (trigger)
{
case TEH_KYC_TRIGGER_WITHDRAW:
case TALER_KYCLOGIC_KYC_TRIGGER_WITHDRAW:
return "withdraw";
case TEH_KYC_TRIGGER_DEPOSIT:
case TALER_KYCLOGIC_KYC_TRIGGER_DEPOSIT:
return "deposit";
case TEH_KYC_TRIGGER_P2P_RECEIVE:
case TALER_KYCLOGIC_KYC_TRIGGER_P2P_RECEIVE:
return "merge";
case TEH_KYC_TRIGGER_WALLET_BALANCE:
case TALER_KYCLOGIC_KYC_TRIGGER_WALLET_BALANCE:
return "balance";
}
GNUNET_break (0);
@ -221,16 +220,16 @@ TEH_kyc_trigger2s (enum TEH_KycTriggerEvent trigger)
enum GNUNET_GenericReturnValue
TEH_kyc_user_type_from_string (const char *ut_s,
enum TEH_KycUserType *ut)
TALER_KYCLOGIC_kyc_user_type_from_string (const char *ut_s,
enum TALER_KYCLOGIC_KycUserType *ut)
{
struct
{
const char *in;
enum TEH_KycTriggerEvent out;
enum TALER_KYCLOGIC_KycTriggerEvent out;
} map [] = {
{ "individual", TEH_KYC_UT_INDIVIDUAL },
{ "business", TEH_KYC_UT_BUSINESS },
{ "individual", TALER_KYCLOGIC_KYC_UT_INDIVIDUAL },
{ "business", TALER_KYCLOGIC_KYC_UT_BUSINESS },
{ NULL, 0 }
};
@ -249,13 +248,13 @@ TEH_kyc_user_type_from_string (const char *ut_s,
const char *
TEH_kyc_user_type2s (enum TEH_KycUserType ut)
TALER_KYCLOGIC_kyc_user_type2s (enum TALER_KYCLOGIC_KycUserType ut)
{
switch (ut)
{
case TEH_KYC_UT_INDIVIDUAL:
case TALER_KYCLOGIC_KYC_UT_INDIVIDUAL:
return "individual";
case TEH_KYC_UT_BUSINESS:
case TALER_KYCLOGIC_KYC_UT_BUSINESS:
return "business";
}
GNUNET_break (0);
@ -266,11 +265,13 @@ TEH_kyc_user_type2s (enum TEH_KycUserType ut)
/**
* Load KYC logic plugin.
*
* @param cfg configuration to use
* @param name name of the plugin
* @return NULL on error
*/
static struct TALER_KYCLOGIC_Plugin *
load_logic (const char *name)
load_logic (const struct GNUNET_CONFIGURATION_Handle *cfg,
const char *name)
{
char *lib_name;
struct TALER_KYCLOGIC_Plugin *plugin;
@ -279,7 +280,7 @@ load_logic (const char *name)
"libtaler_plugin_kyclogic_%s",
name);
plugin = GNUNET_PLUGIN_load (lib_name,
(void *) TEH_cfg);
(void *) cfg);
if (NULL != plugin)
plugin->library_name = lib_name;
else
@ -296,16 +297,16 @@ load_logic (const char *name)
* @param check name of the check
* @return pointer into the global list
*/
static struct TEH_KycCheck *
static struct TALER_KYCLOGIC_KycCheck *
add_check (const char *check)
{
struct TEH_KycCheck *kc;
struct TALER_KYCLOGIC_KycCheck *kc;
for (unsigned int i = 0; i<num_kyc_checks; i++)
if (0 == strcasecmp (check,
kyc_checks[i]->name))
return kyc_checks[i];
kc = GNUNET_new (struct TEH_KycCheck);
kc = GNUNET_new (struct TALER_KYCLOGIC_KycCheck);
kc->name = GNUNET_strdup (check);
GNUNET_array_append (kyc_checks,
num_kyc_checks,
@ -325,18 +326,18 @@ add_check (const char *check)
*/
static void
add_checks (char *checks,
struct TEH_KycCheck ***p_checks,
struct TALER_KYCLOGIC_KycCheck ***p_checks,
unsigned int *num_p_checks)
{
char *sptr;
struct TEH_KycCheck **rchecks = NULL;
struct TALER_KYCLOGIC_KycCheck **rchecks = NULL;
unsigned int num_rchecks = 0;
for (char *tok = strtok_r (checks, " ", &sptr);
NULL != tok;
tok = strtok_r (NULL, " ", &sptr))
{
struct TEH_KycCheck *kc;
struct TALER_KYCLOGIC_KycCheck *kc;
kc = add_check (tok);
GNUNET_array_append (rchecks,
@ -351,20 +352,23 @@ add_checks (char *checks,
/**
* Parse configuration of a KYC provider.
*
* @param cfg configuration to parse
* @param section name of the section to analyze
* @return #GNUNET_OK on success
*/
static enum GNUNET_GenericReturnValue
add_provider (const char *section)
add_provider (const struct GNUNET_CONFIGURATION_Handle *cfg,
const char *section)
{
unsigned long long cost;
char *logic;
char *ut_s;
enum TEH_KycUserType ut;
enum TALER_KYCLOGIC_KycUserType ut;
char *checks;
struct TALER_KYCLOGIC_Plugin *lp;
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_number (TEH_cfg,
GNUNET_CONFIGURATION_get_value_number (cfg,
section,
"COST",
&cost))
@ -376,7 +380,7 @@ add_provider (const char *section)
return GNUNET_SYSERR;
}
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (TEH_cfg,
GNUNET_CONFIGURATION_get_value_string (cfg,
section,
"USER_TYPE",
&ut_s))
@ -387,7 +391,7 @@ add_provider (const char *section)
return GNUNET_SYSERR;
}
if (GNUNET_OK !=
TEH_kyc_user_type_from_string (ut_s,
TALER_KYCLOGIC_kyc_user_type_from_string (ut_s,
&ut))
{
GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
@ -399,7 +403,7 @@ add_provider (const char *section)
}
GNUNET_free (ut_s);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (TEH_cfg,
GNUNET_CONFIGURATION_get_value_string (cfg,
section,
"LOGIC",
&logic))
@ -409,7 +413,8 @@ add_provider (const char *section)
"LOGIC");
return GNUNET_SYSERR;
}
lp = load_logic (logic);
lp = load_logic (cfg,
logic);
if (NULL == lp)
{
GNUNET_free (logic);
@ -421,7 +426,7 @@ add_provider (const char *section)
}
GNUNET_free (logic);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (TEH_cfg,
GNUNET_CONFIGURATION_get_value_string (cfg,
section,
"PROVIDED_CHECKS",
&checks))
@ -432,9 +437,9 @@ add_provider (const char *section)
return GNUNET_SYSERR;
}
{
struct TEH_KycProvider *kp;
struct TALER_KYCLOGIC_KycProvider *kp;
kp = GNUNET_new (struct TEH_KycProvider);
kp = GNUNET_new (struct TALER_KYCLOGIC_KycProvider);
kp->provider_section_name = section;
kp->user_type = ut;
kp->logic = lp;
@ -455,7 +460,7 @@ add_provider (const char *section)
kp);
for (unsigned int i = 0; i<kp->num_checks; i++)
{
struct TEH_KycCheck *kc = kp->provided_checks[i];
struct TALER_KYCLOGIC_KycCheck *kc = kp->provided_checks[i];
GNUNET_array_append (kc->providers,
kc->num_providers,
@ -467,16 +472,17 @@ add_provider (const char *section)
static enum GNUNET_GenericReturnValue
add_trigger (const char *section)
add_trigger (const struct GNUNET_CONFIGURATION_Handle *cfg,
const char *section)
{
char *ot_s;
struct TALER_Amount threshold;
struct GNUNET_TIME_Relative timeframe;
char *checks;
enum TEH_KycTriggerEvent ot;
enum TALER_KYCLOGIC_KycTriggerEvent ot;
if (GNUNET_OK !=
TALER_config_get_amount (TEH_cfg,
TALER_config_get_amount (cfg,
section,
"THRESHOLD",
&threshold))
@ -488,7 +494,7 @@ add_trigger (const char *section)
return GNUNET_SYSERR;
}
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (TEH_cfg,
GNUNET_CONFIGURATION_get_value_string (cfg,
section,
"OPERATION_TYPE",
&ot_s))
@ -499,7 +505,7 @@ add_trigger (const char *section)
return GNUNET_SYSERR;
}
if (GNUNET_OK !=
TEH_kyc_trigger_from_string (ot_s,
TALER_KYCLOGIC_kyc_trigger_from_string (ot_s,
&ot))
{
GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
@ -512,12 +518,12 @@ add_trigger (const char *section)
GNUNET_free (ot_s);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_time (TEH_cfg,
GNUNET_CONFIGURATION_get_value_time (cfg,
section,
"TIMEFRAME",
&timeframe))
{
if (TEH_KYC_TRIGGER_WALLET_BALANCE == ot)
if (TALER_KYCLOGIC_KYC_TRIGGER_WALLET_BALANCE == ot)
{
timeframe = GNUNET_TIME_UNIT_ZERO;
}
@ -531,7 +537,7 @@ add_trigger (const char *section)
}
}
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (TEH_cfg,
GNUNET_CONFIGURATION_get_value_string (cfg,
section,
"REQUIRED_CHECKS",
&checks))
@ -543,9 +549,9 @@ add_trigger (const char *section)
}
{
struct TEH_KycTrigger *kt;
struct TALER_KYCLOGIC_KycTrigger *kt;
kt = GNUNET_new (struct TEH_KycTrigger);
kt = GNUNET_new (struct TALER_KYCLOGIC_KycTrigger);
kt->timeframe = timeframe;
kt->threshold = threshold;
kt->trigger = ot;
@ -561,25 +567,43 @@ add_trigger (const char *section)
}
/**
* Closure for #handle_section().
*/
struct SectionContext
{
/**
* Configuration to handle.
*/
const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
* Result to return, set to false on failures.
*/
bool result;
};
/**
* Function to iterate over configuration sections.
*
* @param cls closure, `boolean *`, set to false on failure
* @param cls a `struct SectionContext *`
* @param section name of the section
*/
static void
handle_section (void *cls,
const char *section)
{
bool *ok = cls;
struct SectionContext *sc = cls;
if (0 == strncasecmp (section,
"kyc-provider-",
strlen ("kyc-provider-")))
{
if (GNUNET_OK !=
add_provider (section))
*ok = false;
add_provider (sc->cfg,
section))
sc->result = false;
return;
}
if (0 == strncasecmp (section,
@ -587,8 +611,9 @@ handle_section (void *cls,
strlen ("kyc-legitimization-")))
{
if (GNUNET_OK !=
add_trigger (section))
*ok = false;
add_trigger (sc->cfg,
section))
sc->result = false;
return;
}
}
@ -606,8 +631,10 @@ static int
sort_by_timeframe (const void *p1,
const void *p2)
{
struct TEH_KycTrigger **t1 = (struct TEH_KycTrigger **) p1;
struct TEH_KycTrigger **t2 = (struct TEH_KycTrigger **) p2;
struct TALER_KYCLOGIC_KycTrigger **t1 = (struct
TALER_KYCLOGIC_KycTrigger **) p1;
struct TALER_KYCLOGIC_KycTrigger **t2 = (struct
TALER_KYCLOGIC_KycTrigger **) p2;
if (GNUNET_TIME_relative_cmp ((*t1)->timeframe,
<,
@ -622,16 +649,19 @@ sort_by_timeframe (const void *p1,
enum GNUNET_GenericReturnValue
TEH_kyc_init (void)
TALER_KYCLOGIC_kyc_init (const struct GNUNET_CONFIGURATION_Handle *cfg)
{
bool ok = true;
struct SectionContext sc = {
.cfg = cfg,
.result = true
};
GNUNET_CONFIGURATION_iterate_sections (TEH_cfg,
GNUNET_CONFIGURATION_iterate_sections (cfg,
&handle_section,
&ok);
if (! ok)
&sc);
if (! sc.result)
{
TEH_kyc_done ();
TALER_KYCLOGIC_kyc_done ();
return GNUNET_SYSERR;
}
@ -643,23 +673,23 @@ TEH_kyc_init (void)
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"No provider available for required KYC check `%s'\n",
kyc_checks[i]->name);
TEH_kyc_done ();
TALER_KYCLOGIC_kyc_done ();
return GNUNET_SYSERR;
}
qsort (kyc_triggers,
num_kyc_triggers,
sizeof (struct TEH_KycTrigger *),
sizeof (struct TALER_KYCLOGIC_KycTrigger *),
&sort_by_timeframe);
return GNUNET_OK;
}
void
TEH_kyc_done (void)
TALER_KYCLOGIC_kyc_done (void)
{
for (unsigned int i = 0; i<num_kyc_triggers; i++)
{
struct TEH_KycTrigger *kt = kyc_triggers[i];
struct TALER_KYCLOGIC_KycTrigger *kt = kyc_triggers[i];
GNUNET_array_grow (kt->required_checks,
kt->num_checks,
@ -671,7 +701,7 @@ TEH_kyc_done (void)
0);
for (unsigned int i = 0; i<num_kyc_providers; i++)
{
struct TEH_KycProvider *kp = kyc_providers[i];
struct TALER_KYCLOGIC_KycProvider *kp = kyc_providers[i];
kp->logic->unload_configuration (kp->pd);
GNUNET_array_grow (kp->provided_checks,
@ -696,7 +726,7 @@ TEH_kyc_done (void)
0);
for (unsigned int i = 0; i<num_kyc_checks; i++)
{
struct TEH_KycCheck *kc = kyc_checks[i];
struct TALER_KYCLOGIC_KycCheck *kc = kyc_checks[i];
GNUNET_free (kc->name);
GNUNET_free (kc);
@ -720,7 +750,7 @@ struct ThresholdTestContext
/**
* Trigger event to evaluate triggers of.
*/
enum TEH_KycTriggerEvent event;
enum TALER_KYCLOGIC_KycTriggerEvent event;
/**
* Offset in the triggers array where we need to start
@ -732,13 +762,17 @@ struct ThresholdTestContext
/**
* Array of checks needed so far.
*/
struct TEH_KycCheck **needed;
struct TALER_KYCLOGIC_KycCheck **needed;
/**
* Pointer to number of entries used in @a needed.
*/
unsigned int *needed_cnt;
/**
* Has @e total been initialized yet?
*/
bool have_total;
};
@ -764,6 +798,8 @@ eval_trigger (void *cls,
bool bump = true;
duration = GNUNET_TIME_absolute_get_duration (date);
if (ttc->have_total)
{
if (0 >
TALER_amount_add (&ttc->total,
&ttc->total,
@ -772,9 +808,14 @@ eval_trigger (void *cls,
GNUNET_break (0);
return GNUNET_SYSERR;
}
}
else
{
ttc->total = *amount;
}
for (unsigned int i = ttc->start; i<num_kyc_triggers; i++)
{
const struct TEH_KycTrigger *kt = kyc_triggers[i];
const struct TALER_KYCLOGIC_KycTrigger *kt = kyc_triggers[i];
if (ttc->event != kt->trigger)
continue;
@ -801,7 +842,7 @@ eval_trigger (void *cls,
already present... */
for (unsigned int j = 0; j<kt->num_checks; j++)
{
struct TEH_KycCheck *rc = kt->required_checks[j];
struct TALER_KYCLOGIC_KycCheck *rc = kt->required_checks[j];
bool found = false;
for (unsigned int k = 0; k<*ttc->needed_cnt; k++)
@ -832,7 +873,7 @@ struct RemoveContext
/**
* Array of checks needed so far.
*/
struct TEH_KycCheck **needed;
struct TALER_KYCLOGIC_KycCheck **needed;
/**
* Pointer to number of entries used in @a needed.
@ -857,14 +898,14 @@ remove_satisfied (void *cls,
for (unsigned int i = 0; i<num_kyc_providers; i++)
{
const struct TEH_KycProvider *kp = kyc_providers[i];
const struct TALER_KYCLOGIC_KycProvider *kp = kyc_providers[i];
if (0 != strcasecmp (provider_name,
kp->provider_section_name))
continue;
for (unsigned int j = 0; j<kp->num_checks; j++)
{
const struct TEH_KycCheck *kc = kp->provided_checks[j];
const struct TALER_KYCLOGIC_KycCheck *kc = kp->provided_checks[j];
for (unsigned int k = 0; k<*rc->needed_cnt; k++)
if (kc == rc->needed[k])
@ -882,22 +923,24 @@ remove_satisfied (void *cls,
const char *
TEH_kyc_test_required (enum TEH_KycTriggerEvent event,
TALER_KYCLOGIC_kyc_test_required (enum TALER_KYCLOGIC_KycTriggerEvent event,
const struct TALER_PaytoHashP *h_payto,
TEH_KycAmountIterator ai,
TALER_KYCLOGIC_KycSatisfiedIterator ki,
void *ki_cls,
TALER_KYCLOGIC_KycAmountIterator ai,
void *ai_cls)
{
struct TEH_KycCheck *needed[num_kyc_checks];
struct TALER_KYCLOGIC_KycCheck *needed[num_kyc_checks];
unsigned int needed_cnt = 0;
struct GNUNET_TIME_Relative timeframe;
unsigned long long min_cost = ULONG_LONG_MAX;
unsigned int max_checks = 0;
const struct TEH_KycProvider *kp_best = NULL;
const struct TALER_KYCLOGIC_KycProvider *kp_best = NULL;
timeframe = GNUNET_TIME_UNIT_ZERO;
for (unsigned int i = 0; i<num_kyc_triggers; i++)
{
const struct TEH_KycTrigger *kt = kyc_triggers[i];
const struct TALER_KYCLOGIC_KycTrigger *kt = kyc_triggers[i];
if (event != kt->trigger)
continue;
@ -912,8 +955,6 @@ TEH_kyc_test_required (enum TEH_KycTriggerEvent event,
.needed_cnt = &needed_cnt
};
TALER_amount_set_zero (TEH_currency,
&ttc.total);
now = GNUNET_TIME_absolute_get ();
ai (ai_cls,
GNUNET_TIME_absolute_subtract (now,
@ -933,9 +974,11 @@ TEH_kyc_test_required (enum TEH_KycTriggerEvent event,
/* Check what provider checks are already satisfied for h_payto (with
database), remove those from the 'needed' array. */
GNUNET_break (0);
qs = TEH_plugin->select_satisfied_kyc_processes (TEH_plugin->cls,
// FIXME: do via callback!
qs = ki (ki_cls,
h_payto,
&remove_satisfied,
&
remove_satisfied,
&rc);
GNUNET_break (qs >= 0); // FIXME: handle DB failure more nicely?
}
@ -944,12 +987,12 @@ TEH_kyc_test_required (enum TEH_KycTriggerEvent event,
provider */
for (unsigned int i = 0; i<num_kyc_providers; i++)
{
const struct TEH_KycProvider *kp = kyc_providers[i];
const struct TALER_KYCLOGIC_KycProvider *kp = kyc_providers[i];
unsigned int matched = 0;
for (unsigned int j = 0; j<kp->num_checks; j++)
{
const struct TEH_KycCheck *kc = kp->provided_checks[j];
const struct TALER_KYCLOGIC_KycCheck *kc = kp->provided_checks[j];
for (unsigned int k = 0; k<needed_cnt; k++)
if (kc == needed[k])
@ -965,12 +1008,12 @@ TEH_kyc_test_required (enum TEH_KycTriggerEvent event,
/* Find min-cost provider covering max_checks. */
for (unsigned int i = 0; i<num_kyc_providers; i++)
{
const struct TEH_KycProvider *kp = kyc_providers[i];
const struct TALER_KYCLOGIC_KycProvider *kp = kyc_providers[i];
unsigned int matched = 0;
for (unsigned int j = 0; j<kp->num_checks; j++)
{
const struct TEH_KycCheck *kc = kp->provided_checks[j];
const struct TALER_KYCLOGIC_KycCheck *kc = kp->provided_checks[j];
for (unsigned int k = 0; k<needed_cnt; k++)
if (kc == needed[k])
@ -993,13 +1036,13 @@ TEH_kyc_test_required (enum TEH_KycTriggerEvent event,
enum GNUNET_GenericReturnValue
TEH_kyc_get_logic (const char *provider_section_name,
TALER_KYCLOGIC_kyc_get_logic (const char *provider_section_name,
struct TALER_KYCLOGIC_Plugin **plugin,
struct TALER_KYCLOGIC_ProviderDetails **pd)
{
for (unsigned int i = 0; i<num_kyc_providers; i++)
{
struct TEH_KycProvider *kp = kyc_providers[i];
struct TALER_KYCLOGIC_KycProvider *kp = kyc_providers[i];
if (0 !=
strcasecmp (provider_section_name,

347
src/kyclogic/taler-exchange-kyc-tester.c
View File

@ -28,6 +28,7 @@
#include "taler_mhd_lib.h"
#include "taler_json_lib.h"
#include "taler_crypto_lib.h"
#include "taler_kyclogic_lib.h"
#include "taler_kyclogic_plugin.h"
#include <gnunet/gnunet_mhd_compat.h>
@ -220,6 +221,328 @@ r404 (struct MHD_Connection *connection,
}
/**
* Context for the webhook.
*/
struct KycWebhookContext
{
/**
* Kept in a DLL while suspended.
*/
struct KycWebhookContext *next;
/**
* Kept in a DLL while suspended.
*/
struct KycWebhookContext *prev;
/**
* Details about the connection we are processing.
*/
struct TEKT_RequestContext *rc;
/**
* Plugin responsible for the webhook.
*/
struct TALER_KYCLOGIC_Plugin *plugin;
/**
* Configuration for the specific action.
*/
struct TALER_KYCLOGIC_ProviderDetails *pd;
/**
* Webhook activity.
*/
struct TALER_KYCLOGIC_WebhookHandle *wh;
/**
* HTTP response to return.
*/
struct MHD_Response *response;
/**
* Logic the request is for. Name of the configuration
* section defining the KYC logic.
*/
char *logic;
/**
* HTTP response code to return.
*/
unsigned int response_code;
/**
* #GNUNET_YES if we are suspended,
* #GNUNET_NO if not.
* #GNUNET_SYSERR if we had some error.
*/
enum GNUNET_GenericReturnValue suspended;
};
/**
* Contexts are kept in a DLL while suspended.
*/
static struct KycWebhookContext *kwh_head;
/**
* Contexts are kept in a DLL while suspended.
*/
static struct KycWebhookContext *kwh_tail;
/**
* Resume processing the @a kwh request.
*
* @param kwh request to resume
*/
static void
kwh_resume (struct KycWebhookContext *kwh)
{
GNUNET_assert (GNUNET_YES == kwh->suspended);
kwh->suspended = GNUNET_NO;
GNUNET_CONTAINER_DLL_remove (kwh_head,
kwh_tail,
kwh);
MHD_resume_connection (kwh->rc->connection);
TALER_MHD_daemon_trigger ();
}
static void
kyc_webhook_cleanup (void)
{
struct KycWebhookContext *kwh;
while (NULL != (kwh = kwh_head))
{
if (NULL != kwh->wh)
{
kwh->plugin->webhook_cancel (kwh->wh);
kwh->wh = NULL;
}
kwh_resume (kwh);
}
}
/**
* Function called with the result of a webhook
* operation.
*
* Note that the "decref" for the @a response
* will be done by the plugin.
*
* @param cls closure
* @param legi_row legitimization request the webhook was about
* @param account_id account the webhook was about
* @param provider_user_id set to user ID at the provider, or NULL if not supported or unknown
* @param provider_legitimization_id set to legitimization process ID at the provider, or NULL if not supported or unknown
* @param status KYC status
* @param expiration until when is the KYC check valid
* @param http_status HTTP status code of @a response
* @param[in] response to return to the HTTP client
*/
static void
webhook_finished_cb (
void *cls,
uint64_t legi_row,
const struct TALER_PaytoHashP *account_id,
const char *provider_user_id,
const char *provider_legitimization_id,
enum TALER_KYCLOGIC_KycStatus status,
struct GNUNET_TIME_Absolute expiration,
unsigned int http_status,
struct MHD_Response *response)
{
struct KycWebhookContext *kwh = cls;
kwh->wh = NULL;
switch (status)
{
case TALER_KYCLOGIC_STATUS_SUCCESS:
/* _successfully_ resumed case */
GNUNET_log (GNUNET_ERROR_TYPE_MESSAGE,
"KYC successful for user `%s' (legi: %s)\n",
provider_user_id,
provider_legitimization_id);
break;
default:
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"KYC status of %s/%s (Row #%llu) is %d\n",
provider_user_id,
provider_legitimization_id,
(unsigned long long) legi_row,
status);
break;
}
kwh->response = response;
kwh->response_code = http_status;
kwh_resume (kwh);
}
/**
* Function called to clean up a context.
*
* @param rc request context
*/
static void
clean_kwh (struct TEKT_RequestContext *rc)
{
struct KycWebhookContext *kwh = rc->rh_ctx;
if (NULL != kwh->wh)
{
kwh->plugin->webhook_cancel (kwh->wh);
kwh->wh = NULL;
}
if (NULL != kwh->response)
{
MHD_destroy_response (kwh->response);
kwh->response = NULL;
}
GNUNET_free (kwh->logic);
GNUNET_free (kwh);
}
/**
* Function the plugin can use to lookup an
* @a h_payto by @a provider_legitimization_id.
*
* @param cls closure, NULL
* @param provider_section
* @param provider_legitimization_id legi to look up
* @param[out] h_payto where to write the result
* @return database transaction status
*/
static enum GNUNET_DB_QueryStatus
kyc_provider_account_lookup (
void *cls,
const char *provider_section,
const char *provider_legitimization_id,
struct TALER_PaytoHashP *h_payto)
{
// FIXME: pass value to use for h_payto via command-line?
memset (h_payto,
42,
sizeof (*h_payto));
return 1; // FIXME...
}
/**
* Handle a (GET or POST) "/kyc-webhook" request.
*
* @param rc request to handle
* @param method HTTP request method used by the client
* @param root uploaded JSON body (can be NULL)
* @param args one argument with the payment_target_uuid
* @return MHD result code
*/
static MHD_RESULT
handler_kyc_webhook_generic (
struct TEKT_RequestContext *rc,
const char *method,
const json_t *root,
const char *const args[])
{
struct KycWebhookContext *kwh = rc->rh_ctx;
if (NULL == kwh)
{ /* first time */
kwh = GNUNET_new (struct KycWebhookContext);
kwh->logic = GNUNET_strdup (args[0]);
kwh->rc = rc;
rc->rh_ctx = kwh;
rc->rh_cleaner = &clean_kwh;
if (GNUNET_OK !=
TALER_KYCLOGIC_kyc_get_logic (kwh->logic,
&kwh->plugin,
&kwh->pd))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"KYC logic `%s' unknown (check KYC provider configuration)\n",
kwh->logic);
return TALER_MHD_reply_with_error (rc->connection,
MHD_HTTP_NOT_FOUND,
TALER_EC_EXCHANGE_KYC_WEBHOOK_LOGIC_UNKNOWN,
"$LOGIC");
}
kwh->wh = kwh->plugin->webhook (kwh->plugin->cls,
kwh->pd,
&kyc_provider_account_lookup,
NULL,
method,
&args[1],
rc->connection,
root,
&webhook_finished_cb,
kwh);
if (NULL == kwh->wh)
{
GNUNET_break_op (0);
return TALER_MHD_reply_with_error (rc->connection,
MHD_HTTP_INTERNAL_SERVER_ERROR,
TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE,
"failed to run webhook logic");
}
kwh->suspended = GNUNET_YES;
GNUNET_CONTAINER_DLL_insert (kwh_head,
kwh_tail,
kwh);
MHD_suspend_connection (rc->connection);
return MHD_YES;
}
if (NULL != kwh->response)
{
/* handle _failed_ resumed cases */
return MHD_queue_response (rc->connection,
kwh->response_code,
kwh->response);
}
/* We resumed, but got no response? This should
not happen. */
GNUNET_break (0);
return TALER_MHD_reply_with_error (rc->connection,
MHD_HTTP_INTERNAL_SERVER_ERROR,
TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE,
"resumed without response");
}
static MHD_RESULT
handler_kyc_webhook_get (
struct TEKT_RequestContext *rc,
const char *const args[])
{
return handler_kyc_webhook_generic (rc,
MHD_HTTP_METHOD_GET,
NULL,
args);
}
static MHD_RESULT
handler_kyc_webhook_post (
struct TEKT_RequestContext *rc,
const json_t *root,
const char *const args[])
{
return handler_kyc_webhook_generic (rc,
MHD_HTTP_METHOD_POST,
root,
args);
}
/**
* Function called whenever MHD is done with a request. If the
* request was a POST, we may have stored a `struct Buffer *` in the
@ -295,7 +618,6 @@ proceed_with_handler (struct TEKT_RequestContext *rc,
size_t *upload_data_size)
{
const struct TEKT_RequestHandler *rh = rc->rh;
// FIXME: handle '-1 == rh->nargs'!!!
const char *args[rh->nargs + 2];
size_t ulen = strlen (url) + 1;
json_t *root = NULL;
@ -442,19 +764,21 @@ handle_mhd_request (void *cls,
.handler.post = &TEKT_handler_kyc_wallet,
.nargs = 0
},
#endif
{
.url = "kyc-webhook",
.method = MHD_HTTP_METHOD_POST,
.handler.post = &TEKT_handler_kyc_webhook_post,
.nargs = -1
.handler.post = &handler_kyc_webhook_post,
.nargs = 128,
.nargs_is_upper_bound = true
},
{
.url = "kyc-webhook",
.method = MHD_HTTP_METHOD_GET,
.handler.post = &TEKT_handler_kyc_webhook_get,
.nargs = -1
.handler.get = &handler_kyc_webhook_get,
.nargs = 128,
.nargs_is_upper_bound = true
},
#endif
/* mark end of list */
{
.url = NULL
@ -670,6 +994,8 @@ do_shutdown (void *cls)
struct MHD_Daemon *mhd;
(void) cls;
kyc_webhook_cleanup ();
TALER_KYCLOGIC_kyc_done ();
mhd = TALER_MHD_daemon_stop ();
if (NULL != mhd)
MHD_stop_daemon (mhd);
@ -708,11 +1034,18 @@ run (void *cls,
(void ) cfgfile;
TALER_MHD_setup (TALER_MHD_GO_NONE);
TEKT_cfg = config;
if (GNUNET_OK !=
TALER_KYCLOGIC_kyc_init (config))
{
global_ret = EXIT_NOTCONFIGURED;
GNUNET_SCHEDULER_shutdown ();
return;
}
if (GNUNET_OK !=
exchange_serve_process_config ())
{
global_ret = EXIT_NOTCONFIGURED;
TALER_KYCLOGIC_kyc_done ();
GNUNET_SCHEDULER_shutdown ();
return;
}