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/*
This file is part of TALER
Copyright (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 exchange-lib/testing_api_helpers.c
* @brief helper functions
* @author Christian Grothoff
* @author Marcello Stanisci
*/
#include "platform.h"
#include "taler_json_lib.h"
#include <gnunet/gnunet_curl_lib.h>
#include "exchange_api_handle.h"
#include "taler_signatures.h"
#include "taler_testing_lib.h"
/**
* Remove files from previous runs
*
* @param config_name configuration filename.
*/
void
TALER_TESTING_cleanup_files (const char *config_name)
{
struct GNUNET_CONFIGURATION_Handle *cfg;
char *dir;
cfg = GNUNET_CONFIGURATION_create ();
if (GNUNET_OK !=
GNUNET_CONFIGURATION_load (cfg,
config_name))
{
GNUNET_break (0);
GNUNET_CONFIGURATION_destroy (cfg);
exit (77);
}
GNUNET_assert (GNUNET_OK ==
GNUNET_CONFIGURATION_get_value_filename
(cfg,
"exchange",
"keydir",
&dir));
if (GNUNET_YES ==
GNUNET_DISK_directory_test (dir,
GNUNET_NO))
GNUNET_break (GNUNET_OK ==
GNUNET_DISK_directory_remove (dir));
GNUNET_free (dir);
GNUNET_CONFIGURATION_destroy (cfg);
}
/**
* Prepare launching an exchange. Checks that the configured
* port is available, runs taler-exchange-keyup,
* taler-auditor-sign and taler-exchange-dbinit. Does NOT
* launch the exchange process itself.
*
* @param config_filename configuration file to use
* @param base_url[out] will be set to the exchange base url,
* if the config has any; otherwise it will be set to
* NULL.
* @return #GNUNET_OK on success, #GNUNET_NO if test should be
* skipped, #GNUNET_SYSERR on test failure
*/
int
TALER_TESTING_prepare_exchange (const char *config_filename,
char **base_url)
{
struct GNUNET_OS_Process *proc;
enum GNUNET_OS_ProcessStatusType type;
unsigned long code;
struct GNUNET_CONFIGURATION_Handle *cfg;
char *test_home_dir;
char *signed_keys_out;
char *exchange_master_pub;
proc = GNUNET_OS_start_process (GNUNET_NO,
GNUNET_OS_INHERIT_STD_ALL,
NULL, NULL, NULL,
"taler-exchange-keyup",
"taler-exchange-keyup",
"-c", config_filename,
"-o", "/tmp/auditor.in",
NULL);
if (NULL == proc)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to run `taler-exchange-keyup`,"
" is your PATH correct?\n");
return GNUNET_NO;
}
GNUNET_OS_process_wait (proc);
GNUNET_OS_process_destroy (proc);
cfg = GNUNET_CONFIGURATION_create ();
if (GNUNET_OK != GNUNET_CONFIGURATION_load
(cfg, config_filename))
return GNUNET_SYSERR;
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (cfg,
"exchange",
"BASE_URL",
base_url))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_WARNING,
"exchange",
"BASE_URL");
*base_url = NULL;
}
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_filename (cfg,
"paths",
"TALER_TEST_HOME",
&test_home_dir))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
"paths",
"TALER_TEST_HOME");
GNUNET_CONFIGURATION_destroy (cfg);
return GNUNET_SYSERR;
}
GNUNET_asprintf (&signed_keys_out,
"%s/.local/share/taler/auditors/auditor.out",
test_home_dir);
GNUNET_free (test_home_dir);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (cfg,
"exchange",
"MASTER_PUBLIC_KEY",
&exchange_master_pub))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
"exchange",
"MASTER_PUBLIC_KEY");
GNUNET_CONFIGURATION_destroy (cfg);
return GNUNET_SYSERR;
}
GNUNET_CONFIGURATION_destroy (cfg);
proc = GNUNET_OS_start_process (GNUNET_NO,
GNUNET_OS_INHERIT_STD_ALL,
NULL, NULL, NULL,
"taler-auditor-sign",
"taler-auditor-sign",
"-c", config_filename,
"-u", "http://auditor/",
"-m", exchange_master_pub,
"-r", "/tmp/auditor.in",
"-o", signed_keys_out,
NULL);
if (NULL == proc)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to run `taler-auditor-sign`,"
" is your PATH correct?\n");
GNUNET_free (signed_keys_out);
GNUNET_free (exchange_master_pub);
return GNUNET_NO;
}
GNUNET_free (exchange_master_pub);
GNUNET_free (signed_keys_out);
GNUNET_OS_process_wait (proc);
GNUNET_OS_process_destroy (proc);
/* Reset exchange database. */
proc = GNUNET_OS_start_process (GNUNET_NO,
GNUNET_OS_INHERIT_STD_ALL,
NULL, NULL, NULL,
"taler-exchange-dbinit",
"taler-exchange-dbinit",
"-c", config_filename,
"-r",
NULL);
if (NULL == proc)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to run `taler-exchange-dbinit`,"
" is your PATH correct?\n");
return GNUNET_NO;
}
if (GNUNET_SYSERR ==
GNUNET_OS_process_wait_status (proc,
&type,
&code))
{
GNUNET_break (0);
GNUNET_OS_process_destroy (proc);
return GNUNET_SYSERR;
}
GNUNET_OS_process_destroy (proc);
if ( (type == GNUNET_OS_PROCESS_EXITED) &&
(0 != code) )
{
fprintf (stderr,
"Failed to setup (exchange) database\n");
return GNUNET_NO;
}
if ( (type != GNUNET_OS_PROCESS_EXITED) ||
(0 != code) )
{
fprintf (stderr,
"Unexpected error running"
" `taler-exchange-dbinit'!\n");
return GNUNET_SYSERR;
}
/* Reset auditor database. */
proc = GNUNET_OS_start_process (GNUNET_NO,
GNUNET_OS_INHERIT_STD_ALL,
NULL, NULL, NULL,
"taler-auditor-dbinit",
"taler-auditor-dbinit",
"-c", config_filename,
"-r",
NULL);
if (NULL == proc)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to run `taler-auditor-dbinit`,"
" is your PATH correct?\n");
return GNUNET_NO;
}
if (GNUNET_SYSERR ==
GNUNET_OS_process_wait_status (proc,
&type,
&code))
{
GNUNET_break (0);
GNUNET_OS_process_destroy (proc);
return GNUNET_SYSERR;
}
GNUNET_OS_process_destroy (proc);
if ( (type == GNUNET_OS_PROCESS_EXITED) &&
(0 != code) )
{
fprintf (stderr,
"Failed to setup (auditor) database\n");
return GNUNET_NO;
}
if ( (type != GNUNET_OS_PROCESS_EXITED) ||
(0 != code) )
{
fprintf (stderr,
"Unexpected error running"
" `taler-auditor-dbinit'!\n");
return GNUNET_SYSERR;
}
return GNUNET_OK;
}
/**
* Find denomination key matching the given amount.
*
* @param keys array of keys to search
* @param amount coin value to look for
* @return NULL if no matching key was found
*/
const struct TALER_EXCHANGE_DenomPublicKey *
TALER_TESTING_find_pk (const struct TALER_EXCHANGE_Keys *keys,
const struct TALER_Amount *amount)
{
struct GNUNET_TIME_Absolute now;
struct TALER_EXCHANGE_DenomPublicKey *pk;
char *str;
now = GNUNET_TIME_absolute_get ();
for (unsigned int i=0;i<keys->num_denom_keys;i++)
{
pk = &keys->denom_keys[i];
if ( (0 == TALER_amount_cmp (amount,
&pk->value)) &&
(now.abs_value_us >= pk->valid_from.abs_value_us) &&
(now.abs_value_us <
pk->withdraw_valid_until.abs_value_us) )
return pk;
}
/* do 2nd pass to check if expiration times are to blame for
* failure */
str = TALER_amount_to_string (amount);
for (unsigned int i=0;i<keys->num_denom_keys;i++)
{
pk = &keys->denom_keys[i];
if ( (0 == TALER_amount_cmp (amount,
&pk->value)) &&
( (now.abs_value_us < pk->valid_from.abs_value_us) ||
(now.abs_value_us >
pk->withdraw_valid_until.abs_value_us) ) )
{
GNUNET_log
(GNUNET_ERROR_TYPE_WARNING,
"Have denomination key for `%s', but with wrong"
" expiration range %llu vs [%llu,%llu)\n",
str,
(unsigned long long) now.abs_value_us,
(unsigned long long) pk->valid_from.abs_value_us,
(unsigned long long)
pk->withdraw_valid_until.abs_value_us);
GNUNET_free (str);
return NULL;
}
}
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
"No denomination key for amount %s found\n",
str);
GNUNET_free (str);
return NULL;
}
/**
* Initialize scheduler loop and curl context for the testcase
* including starting and stopping the exchange using the given
* configuration file.
*
* @param main_cb routine containing all the commands to run.
* @param main_cb_cls closure for @a main_cb, typically NULL.
* @param config_file configuration file for the test-suite.
*
* @return GNUNET_OK if all is okay, != GNUNET_OK otherwise.
* non-GNUNET_OK codes are GNUNET_SYSERR most of the
* times.
*/
int
TALER_TESTING_setup_with_exchange (TALER_TESTING_Main main_cb,
void *main_cb_cls,
const char *config_filename)
{
int result;
unsigned int iter;
struct GNUNET_OS_Process *exchanged;
struct GNUNET_CONFIGURATION_Handle *cfg;
unsigned long long port;
char *serve;
char *wget_cmd;
char *base_url;
cfg = GNUNET_CONFIGURATION_create ();
if (GNUNET_OK !=
GNUNET_CONFIGURATION_load (cfg,
config_filename))
return GNUNET_NO;
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (cfg,
"exchange",
"SERVE",
&serve))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
"exchange",
"SERVE");
GNUNET_CONFIGURATION_destroy (cfg);
return GNUNET_NO;
}
if (0 == strcmp ("tcp", serve))
{
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_number (cfg,
"exchange",
"PORT",
&port))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
"exchange",
"PORT");
GNUNET_CONFIGURATION_destroy (cfg);
return GNUNET_NO;
}
if (GNUNET_OK !=
GNUNET_NETWORK_test_port_free (IPPROTO_TCP,
(uint16_t) port))
{
fprintf (stderr,
"Required port %llu not available, skipping.\n",
port);
return GNUNET_NO;
}
}
exchanged = GNUNET_OS_start_process (GNUNET_NO,
GNUNET_OS_INHERIT_STD_ALL,
NULL, NULL, NULL,
"taler-exchange-httpd",
"taler-exchange-httpd",
"-c", config_filename,
"-i",
NULL);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (cfg,
"exchange",
"BASE_URL",
&base_url))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
"exchange",
"BASE_URL");
GNUNET_CONFIGURATION_destroy (cfg);
return GNUNET_NO;
}
GNUNET_CONFIGURATION_destroy (cfg);
GNUNET_asprintf (&wget_cmd,
"wget -q -t 1 -T 1 %skeys"
" -o /dev/null -O /dev/null",
base_url); // make sure ends with '/'
/* give child time to start and bind against the socket */
fprintf (stderr,
"Waiting for `taler-exchange-httpd' to be ready\n");
iter = 0;
do
{
if (10 == iter)
{
fprintf (stderr,
"Failed to launch `taler-exchange-httpd'"
" (or `wget')\n");
GNUNET_OS_process_kill (exchanged,
SIGTERM);
GNUNET_OS_process_wait (exchanged);
GNUNET_OS_process_destroy (exchanged);
return 77;
}
fprintf (stderr, ".\n");
sleep (1);
iter++;
}
while (0 != system (wget_cmd));
/* NOTE: this blocks. */
result = TALER_TESTING_setup (main_cb,
main_cb_cls,
config_filename,
exchanged);
GNUNET_break (0 ==
GNUNET_OS_process_kill (exchanged,
SIGTERM));
GNUNET_break (GNUNET_OK ==
GNUNET_OS_process_wait (exchanged));
GNUNET_OS_process_destroy (exchanged);
return result;
}
/**
* Test port in URL string for availability.
*/
int
TALER_TESTING_url_port_free (const char *url)
{
const char *port;
long pnum;
port = strrchr (url,
(unsigned char) ':');
if (NULL == port)
pnum = 80;
else
pnum = strtol (port + 1, NULL, 10);
if (GNUNET_OK !=
GNUNET_NETWORK_test_port_free (IPPROTO_TCP,
pnum))
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
"Port %u not available.\n",
(unsigned int) pnum);
return GNUNET_SYSERR;
}
return GNUNET_OK;
}
/**
* Allocate and return a piece of wire-details. Combines
* the @a account_no and the @a bank_url to a
* @a payto://-URL and adds some salt to create the JSON.
*
* @param account_no account number
* @param bank_url the bank_url (FIXME/WARNING: shouldn't this be a _hostname_ ??)
* @return JSON describing the account, including the
* payto://-URL of the account, must be manually decref'd
*/
json_t *
TALER_TESTING_make_wire_details (unsigned long long account_no,
const char *bank_url)
{
char *payto;
json_t *ret;
GNUNET_asprintf (&payto,
"payto://x-taler-bank/%s/%llu",
bank_url,
account_no);
ret = json_pack ("{s:s, s:s}",
"url", payto,
"salt", "test-salt (must be constant for aggregation tests)");
GNUNET_free (payto);
return ret;
}
/**
* Prepare launching a fakebank. Check that the configuration
* file has the right option, and that the port is available.
* If everything is OK, return the configured URL of the fakebank.
*
* @param config_filename configuration file to use
* @param config_section which account to use (must match x-taler-bank)
* @return NULL on error, fakebank URL otherwise
*/
char *
TALER_TESTING_prepare_fakebank (const char *config_filename,
const char *config_section)
{
struct GNUNET_CONFIGURATION_Handle *cfg;
char *payto_url;
char *fakebank_url;
const char *start;
const char *end;
cfg = GNUNET_CONFIGURATION_create ();
if (GNUNET_OK != GNUNET_CONFIGURATION_load (cfg,
config_filename))
return NULL;
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (cfg,
config_section,
"URL",
&payto_url))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_WARNING,
config_section,
"URL");
GNUNET_CONFIGURATION_destroy (cfg);
return NULL;
}
GNUNET_CONFIGURATION_destroy (cfg);
if (0 != strncasecmp (payto_url,
"payto://x-taler-bank/",
strlen ("payto://x-taler-bank/")))
{
GNUNET_log_config_invalid
(GNUNET_ERROR_TYPE_WARNING,
config_section,
"URL",
"expected `x-taler-bank' payto://-URL");
GNUNET_CONFIGURATION_destroy (cfg);
GNUNET_free (payto_url);
return NULL;
}
start = &payto_url [strlen ("payto://x-taler-bank/")];
end = strchr (start,
(unsigned char) '/');
if (NULL == end)
end = &start[strlen (start)];
fakebank_url = GNUNET_strndup (start,
end - start);
GNUNET_free (payto_url);
if (GNUNET_OK !=
TALER_TESTING_url_port_free (fakebank_url))
{
GNUNET_free (fakebank_url);
return NULL;
}
return fakebank_url;
}
/* end of testing_api_helpers.c */
|