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|
/*
This file is part of TALER
Copyright (C) 2018-2021 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_bank_history_credit.c
* @brief command to check the /history/incoming API from the bank.
* @author Marcello Stanisci
*/
#include "platform.h"
#include "taler_json_lib.h"
#include <gnunet/gnunet_curl_lib.h>
#include "taler_exchange_service.h"
#include "taler_testing_lib.h"
#include "taler_fakebank_lib.h"
#include "taler_bank_service.h"
#include "taler_fakebank_lib.h"
/**
* Item in the transaction history, as reconstructed from the
* command history.
*/
struct History
{
/**
* Wire details.
*/
struct TALER_BANK_CreditDetails details;
/**
* Serial ID of the wire transfer.
*/
uint64_t row_id;
/**
* URL to free.
*/
char *url;
};
/**
* State for a "history" CMD.
*/
struct HistoryState
{
/**
* Base URL of the account offering the "history" operation.
*/
char *account_url;
/**
* Reference to command defining the
* first row number we want in the result.
*/
const char *start_row_reference;
/**
* How many rows we want in the result, _at most_,
* and ascending/descending.
*/
long long num_results;
/**
* Handle to a pending "history" operation.
*/
struct TALER_BANK_CreditHistoryHandle *hh;
/**
* The interpreter.
*/
struct TALER_TESTING_Interpreter *is;
/**
* Authentication data for the operation.
*/
struct TALER_BANK_AuthenticationData auth;
/**
* Expected number of results (= rows).
*/
uint64_t results_obtained;
/**
* Set to true if the callback detects something
* unexpected.
*/
bool failed;
/**
* Expected history.
*/
struct History *h;
/**
* Length of @e h
*/
unsigned int total;
};
/**
* Log which history we expected. Called when an error occurs.
*
* @param h what we expected.
* @param h_len number of entries in @a h.
* @param off position of the mismatch.
*/
static void
print_expected (struct History *h,
unsigned int h_len,
unsigned int off)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Transaction history (credit) mismatch at position %u/%u\n",
off,
h_len);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Expected history:\n");
for (unsigned int i = 0; i<h_len; i++)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"H(%u): %s (serial: %llu, subject: %s,"
" counterpart: %s)\n",
i,
TALER_amount2s (&h[i].details.amount),
(unsigned long long) h[i].row_id,
TALER_B2S (&h[i].details.reserve_pub),
h[i].details.debit_account_uri);
}
}
/**
* Closure for command_cb().
*/
struct IteratorContext
{
/**
* Array of history items to return.
*/
struct History *h;
/**
* Set to the row ID from where on we should actually process history items,
* or NULL if we should process all of them.
*/
const uint64_t *row_id_start;
/**
* History state we are working on.
*/
struct HistoryState *hs;
/**
* Current length of the @e h array.
*/
unsigned int total;
/**
* Current write position in @e h array.
*/
unsigned int pos;
/**
* Ok equals True whenever a starting row_id was provided AND was found
* among the CMDs, OR no starting row was given in the first place.
*/
bool ok;
};
/**
* Helper function of build_history() that expands
* the history for each relevant command encountered.
*
* @param[in,out] cls our `struct IteratorContext`
* @param cmd a command to process
*/
static void
command_cb (void *cls,
const struct TALER_TESTING_Command *cmd)
{
struct IteratorContext *ic = cls;
struct HistoryState *hs = ic->hs;
const uint64_t *row_id;
const char *credit_account;
const char *debit_account;
const struct TALER_Amount *amount;
const struct TALER_ReservePublicKeyP *reserve_pub;
const char *exchange_credit_url;
/**
* The following command allows us to skip over those CMDs
* that do not offer a "row_id" trait. Such skipped CMDs are
* not interesting for building a history.
*/
if ( (GNUNET_OK !=
TALER_TESTING_get_trait_bank_row (cmd,
&row_id)) ||
(GNUNET_OK !=
TALER_TESTING_get_trait_credit_payto_uri (cmd,
&credit_account)) ||
(GNUNET_OK !=
TALER_TESTING_get_trait_debit_payto_uri (cmd,
&debit_account)) ||
(GNUNET_OK !=
TALER_TESTING_get_trait_amount (cmd,
&amount)) ||
(GNUNET_OK !=
TALER_TESTING_get_trait_reserve_pub (cmd,
&reserve_pub)) ||
(GNUNET_OK !=
TALER_TESTING_get_trait_exchange_bank_account_url (
cmd,
&exchange_credit_url)) )
return; // Not an interesting event
/**
* Is the interesting event a match with regard to
* the row_id value? If yes, store this condition
* to the state and analyze the next CMDs.
*/
if ( (NULL != ic->row_id_start) &&
(*(ic->row_id_start) == *row_id) &&
(! ic->ok) )
{
ic->ok = true;
return;
}
/**
* The interesting event didn't match the wanted
* row_id value, analyze the next CMDs. Note: this
* branch is relevant only when row_id WAS given.
*/
if (! ic->ok)
return;
if (0 != strcasecmp (hs->account_url,
exchange_credit_url))
return; // Account mismatch
if (ic->total >= GNUNET_MAX (hs->num_results,
-hs->num_results) )
{
TALER_LOG_DEBUG ("Hit history limit\n");
return;
}
TALER_LOG_INFO ("Found history: %s->%s for account %s\n",
debit_account,
credit_account,
hs->account_url);
/* found matching record, make sure we have room */
if (ic->pos == ic->total)
GNUNET_array_grow (ic->h,
ic->total,
ic->pos * 2);
ic->h[ic->pos].url = GNUNET_strdup (debit_account);
ic->h[ic->pos].details.debit_account_uri = ic->h[ic->pos].url;
ic->h[ic->pos].details.amount = *amount;
ic->h[ic->pos].row_id = *row_id;
ic->h[ic->pos].details.reserve_pub = *reserve_pub;
ic->h[ic->pos].details.credit_account_uri = exchange_credit_url;
ic->pos++;
}
/**
* This function constructs the list of history elements that
* interest the account number of the caller. It has two main
* loops: the first to figure out how many history elements have
* to be allocated, and the second to actually populate every
* element.
*
* @param hs history state
* @param[out] rh history array to initialize.
* @return number of entries in @a rh.
*/
static unsigned int
build_history (struct HistoryState *hs,
struct History **rh)
{
struct TALER_TESTING_Interpreter *is = hs->is;
struct IteratorContext ic = {
.hs = hs
};
if (NULL != hs->start_row_reference)
{
const struct TALER_TESTING_Command *add_incoming_cmd;
TALER_LOG_INFO ("`%s': start row given via reference `%s'\n",
TALER_TESTING_interpreter_get_current_label (is),
hs->start_row_reference);
add_incoming_cmd
= TALER_TESTING_interpreter_lookup_command (is,
hs->start_row_reference);
GNUNET_assert (NULL != add_incoming_cmd);
GNUNET_assert (GNUNET_OK ==
TALER_TESTING_get_trait_row (add_incoming_cmd,
&ic.row_id_start));
}
ic.ok = false;
if (NULL == ic.row_id_start)
ic.ok = true;
GNUNET_array_grow (ic.h,
ic.total,
4);
GNUNET_assert (0 != hs->num_results);
TALER_TESTING_iterate (is,
hs->num_results > 0,
&command_cb,
&ic);
GNUNET_assert (ic.ok);
GNUNET_array_grow (ic.h,
ic.total,
ic.pos);
if (0 == ic.pos)
TALER_LOG_DEBUG ("Empty credit history computed\n");
*rh = ic.h;
return ic.pos;
}
/**
* Normalize IBAN-based payto URI in @a in.
*
* @param in input payto://-URI to normalize
* @return normalized IBAN for the test
*/
static char *
normalize (const char *in)
{
char *npt;
const char *q = strchr (in,
'?');
const char *mptr;
const char *bic;
const char *iban;
if (NULL == q)
npt = GNUNET_strdup (in);
else
npt = GNUNET_strndup (in,
q - in);
if (0 != strncasecmp (npt,
"payto://",
strlen ("payto://")))
{
GNUNET_break (0);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Invalid payto: %s\n",
npt);
GNUNET_free (npt);
return NULL;
}
mptr = npt + strlen ("payto://");
bic = strchr (mptr, '/');
if (NULL == bic)
{
GNUNET_break (0);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Invalid payto: %s\n",
npt);
GNUNET_free (npt);
return NULL;
}
bic++;
iban = strchr (bic, '/');
if (NULL != iban)
{
/* need to remove bic */
char *n;
iban++;
GNUNET_asprintf (&n,
"payto://%.*s/%s",
(int) ((bic - mptr) - 1),
mptr,
iban);
GNUNET_free (npt);
npt = n;
}
return npt;
}
/**
* Check that the "/history/incoming" response matches the
* CMD whose offset in the list of CMDs is @a off.
*
* @param h expected history (array)
* @param total length of @a h
* @param off the offset (of the CMD list) where the command
* to check is.
* @param details the expected transaction details.
* @return #GNUNET_OK if the transaction is what we expect.
*/
static enum GNUNET_GenericReturnValue
check_result (struct History *h,
unsigned int total,
unsigned int off,
const struct TALER_BANK_CreditDetails *details)
{
char *u1;
char *u2;
if (off >= total)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Test says history has at most %u"
" results, but got result #%u to check\n",
total,
off);
print_expected (h,
total,
off);
return GNUNET_SYSERR;
}
u1 = normalize (h[off].details.debit_account_uri);
if (NULL == u1)
return GNUNET_SYSERR;
u2 = normalize (details->debit_account_uri);
if (NULL == u2)
{
GNUNET_free (u1);
return GNUNET_SYSERR;
}
if ( (0 != GNUNET_memcmp (&h[off].details.reserve_pub,
&details->reserve_pub)) ||
(0 != TALER_amount_cmp (&h[off].details.amount,
&details->amount)) ||
(0 != strcasecmp (u1,
u2)) )
{
GNUNET_break (0);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"expected debit_account_uri: %s with %s for %s\n",
u1,
TALER_amount2s (&h[off].details.amount),
TALER_B2S (&h[off].details.reserve_pub));
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"actual debit_account_uri: %s with %s for %s\n",
u2,
TALER_amount2s (&details->amount),
TALER_B2S (&details->reserve_pub));
print_expected (h,
total,
off);
GNUNET_free (u1);
GNUNET_free (u2);
return GNUNET_SYSERR;
}
GNUNET_free (u1);
GNUNET_free (u2);
return GNUNET_OK;
}
/**
* This callback will (1) check that the HTTP response code
* is acceptable and (2) that the history is consistent. The
* consistency is checked by going through all the past CMDs,
* reconstructing then the expected history as of those, and
* finally check it against what the bank returned.
*
* @param cls closure.
* @param chr http response details
*/
static void
history_cb (void *cls,
const struct TALER_BANK_CreditHistoryResponse *chr)
{
struct HistoryState *hs = cls;
struct TALER_TESTING_Interpreter *is = hs->is;
hs->hh = NULL;
switch (chr->http_status)
{
case 0:
GNUNET_break (0);
goto error;
case MHD_HTTP_OK:
for (unsigned int i = 0; i<chr->details.ok.details_length; i++)
{
const struct TALER_BANK_CreditDetails *cd =
&chr->details.ok.details[i];
/* check current element */
if (GNUNET_OK !=
check_result (hs->h,
hs->total,
hs->results_obtained,
cd))
{
GNUNET_break (0);
json_dumpf (chr->response,
stderr,
JSON_COMPACT);
hs->failed = true;
hs->hh = NULL;
TALER_TESTING_interpreter_fail (is);
return;
}
hs->results_obtained++;
}
TALER_TESTING_interpreter_next (is);
return;
case MHD_HTTP_NO_CONTENT:
if (0 == hs->total)
{
/* not found is OK for empty history */
TALER_TESTING_interpreter_next (is);
return;
}
GNUNET_break (0);
goto error;
case MHD_HTTP_NOT_FOUND:
if (0 == hs->total)
{
/* not found is OK for empty history */
TALER_TESTING_interpreter_next (is);
return;
}
GNUNET_break (0);
goto error;
default:
hs->hh = NULL;
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unwanted response code from /history/incoming: %u\n",
chr->http_status);
TALER_TESTING_interpreter_fail (is);
return;
}
error:
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Expected history of length %u, got %llu;"
" HTTP status code: %u/%d, failed: %d\n",
hs->total,
(unsigned long long) hs->results_obtained,
chr->http_status,
(int) chr->ec,
hs->failed ? 1 : 0);
print_expected (hs->h,
hs->total,
UINT_MAX);
TALER_TESTING_interpreter_fail (is);
}
/**
* Run the command.
*
* @param cls closure.
* @param cmd the command to execute.
* @param is the interpreter state.
*/
static void
history_run (void *cls,
const struct TALER_TESTING_Command *cmd,
struct TALER_TESTING_Interpreter *is)
{
struct HistoryState *hs = cls;
uint64_t row_id = (hs->num_results > 0) ? 0 : UINT64_MAX;
const uint64_t *row_ptr;
(void) cmd;
hs->is = is;
/* Get row_id from trait. */
if (NULL != hs->start_row_reference)
{
const struct TALER_TESTING_Command *history_cmd;
history_cmd = TALER_TESTING_interpreter_lookup_command (
is,
hs->start_row_reference);
if (NULL == history_cmd)
TALER_TESTING_FAIL (is);
if (GNUNET_OK !=
TALER_TESTING_get_trait_row (history_cmd,
&row_ptr))
TALER_TESTING_FAIL (is);
else
row_id = *row_ptr;
TALER_LOG_DEBUG ("row id (from trait) is %llu\n",
(unsigned long long) row_id);
}
hs->total = build_history (hs,
&hs->h);
hs->hh = TALER_BANK_credit_history (
TALER_TESTING_interpreter_get_context (is),
&hs->auth,
row_id,
hs->num_results,
GNUNET_TIME_UNIT_ZERO,
&history_cb,
hs);
GNUNET_assert (NULL != hs->hh);
}
/**
* Free the state from a "history" CMD, and possibly cancel
* a pending operation thereof.
*
* @param cls closure.
* @param cmd the command which is being cleaned up.
*/
static void
history_cleanup (void *cls,
const struct TALER_TESTING_Command *cmd)
{
struct HistoryState *hs = cls;
(void) cmd;
if (NULL != hs->hh)
{
TALER_TESTING_command_incomplete (hs->is,
cmd->label);
TALER_BANK_credit_history_cancel (hs->hh);
}
GNUNET_free (hs->account_url);
for (unsigned int off = 0; off<hs->total; off++)
GNUNET_free (hs->h[off].url);
GNUNET_free (hs->h);
GNUNET_free (hs);
}
struct TALER_TESTING_Command
TALER_TESTING_cmd_bank_credits (
const char *label,
const struct TALER_BANK_AuthenticationData *auth,
const char *start_row_reference,
long long num_results)
{
struct HistoryState *hs;
hs = GNUNET_new (struct HistoryState);
hs->account_url = GNUNET_strdup (auth->wire_gateway_url);
hs->start_row_reference = start_row_reference;
hs->num_results = num_results;
hs->auth = *auth;
{
struct TALER_TESTING_Command cmd = {
.label = label,
.cls = hs,
.run = &history_run,
.cleanup = &history_cleanup
};
return cmd;
}
}
/* end of testing_api_cmd_credit_history.c */
|