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/*
This file is part of GNUnet
Copyright (C) 2021 GNUnet e.V.
GNUnet 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 of the License,
or (at your option) any later version.
GNUnet 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 this program. If not, see <http://www.gnu.org/licenses/>.
SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
* @file testing/testing_api_cmd_get_topo.c
* @brief Command to start the netjail script.
* @author t3sserakt
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "testing_api_topology.h"
/**
* Generic logging shortcut
*/
#define LOG(kind, ...) GNUNET_log_from (kind, "udp-backchannel",__VA_ARGS__)
struct TopologyState
{
/**
* The label of the command.
*/
const char *label;
/**
* The topology we parsed.
*/
struct GNUNET_TESTING_NetjailTopology *topology;
/**
* A string with the name of the topology file, if @e read_file is true,
* otherwise a string containing the topology data.
*/
const char *topology_string;
/**
* Same as @e topology_string, but set if we need
* to release the memory.
*/
char *topology_alloc;
/**
* A string with the name of the topology file.
*/
const char *file_name;
};
/**
* The cleanup function of this cmd frees resources the cmd allocated.
*
*/
static void
cleanup (void *cls)
{
struct TopologyState *ts = cls;
if (NULL != ts->topology)
{
GNUNET_TESTING_free_topology (ts->topology);
ts->topology = NULL;
}
GNUNET_free (ts->topology_alloc);
GNUNET_free (ts);
}
/**
* This function prepares an array with traits.
*/
static enum GNUNET_GenericReturnValue
traits (void *cls,
const void **ret,
const char *trait,
unsigned int index)
{
struct TopologyState *ts = cls;
struct GNUNET_TESTING_Trait traits[] = {
GNUNET_TESTING_make_trait_topology (ts->topology),
GNUNET_TESTING_make_trait_topology_string (ts->topology_string),
GNUNET_TESTING_trait_end ()
};
return GNUNET_TESTING_get_trait (traits,
ret,
trait,
index);
}
static char *
get_topo_string_from_file (const char *topology_data_file)
{
uint64_t fs;
char *data;
if (GNUNET_YES !=
GNUNET_DISK_file_test (topology_data_file))
{
LOG (GNUNET_ERROR_TYPE_ERROR,
"Topology file %s not found\n",
topology_data_file);
return NULL;
}
if (GNUNET_OK !=
GNUNET_DISK_file_size (topology_data_file,
&fs,
GNUNET_YES,
GNUNET_YES))
{
LOG (GNUNET_ERROR_TYPE_ERROR,
"Could not determine size of topology file %s\n",
topology_data_file);
return NULL;
}
data = GNUNET_malloc_large (fs + 1);
GNUNET_assert (NULL != data);
if (fs !=
GNUNET_DISK_fn_read (topology_data_file,
data,
fs))
{
LOG (GNUNET_ERROR_TYPE_ERROR,
"Topology file %s cannot be read\n",
topology_data_file);
GNUNET_free (data);
return NULL;
}
return data;
}
/**
* The run method starts the script which setup the network namespaces.
*
* @param cls closure.
* @param is interpreter state.
*/
static void
run (void *cls,
struct GNUNET_TESTING_Interpreter *is)
{
struct TopologyState *ts = cls;
if (NULL == ts->topology_string)
{
ts->topology_alloc
= get_topo_string_from_file (ts->file_name);
if (NULL == ts->topology_alloc)
GNUNET_TESTING_FAIL (is);
ts->topology_string = ts->topology_alloc;
}
ts->topology
= GNUNET_TESTING_get_topo_from_string_ (ts->topology_string);
if (NULL == ts->topology)
GNUNET_TESTING_FAIL (is);
}
struct GNUNET_TESTING_Command
GNUNET_TESTING_cmd_load_topology_from_file (
const char *label,
const char *file_name)
{
struct TopologyState *ts;
ts = GNUNET_new (struct TopologyState);
ts->label = label;
ts->file_name = file_name;
return GNUNET_TESTING_command_new_ac (
ts,
label,
&run,
&cleanup,
traits,
NULL);
}
struct GNUNET_TESTING_Command
GNUNET_TESTING_cmd_load_topology_from_string (
const char *label,
const char *topology_string)
{
struct TopologyState *ts;
GNUNET_assert (NULL != topology_string);
ts = GNUNET_new (struct TopologyState);
ts->label = label;
ts->topology_string = topology_string;
return GNUNET_TESTING_command_new_ac (
ts,
label,
&run,
&cleanup,
traits,
NULL);
}
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