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/*
* Copyright (C) 2017 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program 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 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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.
*/
#include "sw_collector_rest_api.h"
#include <rest/rest.h>
#include <utils/debug.h>
typedef struct private_sw_collector_rest_api_t private_sw_collector_rest_api_t;
/**
* Private data of an sw_collector_rest_api_t object.
*/
struct private_sw_collector_rest_api_t {
/**
* Public members of sw_collector_rest_api_state_t
*/
sw_collector_rest_api_t public;
/**
* Software collector database
*/
sw_collector_db_t *db;
/**
* REST API of central collector database
*/
rest_t *rest_api;
};
/**
* Put all locally retrieved software identifiers into a json object
*/
static json_object* create_rest_request(private_sw_collector_rest_api_t *this,
sw_collector_db_query_t type)
{
json_object *jrequest, *jarray, *jstring;
char *name, *package, *version;
uint32_t sw_id, i;
enumerator_t *e;
jrequest = json_object_new_object();
jarray = json_object_new_array();
json_object_object_add(jrequest, "data", jarray);
e = this->db->create_sw_enumerator(this->db, type, NULL);
if (!e)
{
return NULL;
}
while (e->enumerate(e, &sw_id, &name, &package, &version, &i))
{
jstring = json_object_new_string(name);
json_object_array_add(jarray, jstring);
}
e->destroy(e);
return jrequest;
}
typedef struct {
/** public enumerator interface */
enumerator_t public;
/** enumerated json array */
json_object *jarray;
/** current index +1, initialized at 0 */
int idx;
} json_array_enumerator_t;
METHOD(enumerator_t, enumerate, bool,
json_array_enumerator_t *this, va_list args)
{
json_object *jvalue;
char **out;
VA_ARGS_VGET(args, out);
if (this->idx >= json_object_array_length(this->jarray))
{
return FALSE;
}
jvalue = json_object_array_get_idx(this->jarray, this->idx++);
if (json_object_get_type(jvalue) != json_type_string)
{
DBG1(DBG_IMC, "json_string element expected in json_array");
return FALSE;
}
*out = (char*)json_object_get_string(jvalue);
return TRUE;
}
METHOD(enumerator_t, enumerator_destroy, void,
json_array_enumerator_t *this)
{
json_object_put(this->jarray);
free(this);
}
METHOD(sw_collector_rest_api_t, create_sw_enumerator, enumerator_t*,
private_sw_collector_rest_api_t *this, sw_collector_db_query_t type)
{
json_array_enumerator_t *enumerator;
json_object *jrequest, *jresponse;
char cmd[BUF_LEN];
status_t status;
jrequest = create_rest_request(this, type);
if (!jrequest)
{
return NULL;
}
snprintf(cmd, BUF_LEN, "sessions/0/swid-measurement/");
status = this->rest_api->post(this->rest_api, cmd, jrequest, &jresponse);
json_object_put(jrequest);
switch (status)
{
case SUCCESS:
case NOT_FOUND:
jresponse = json_object_new_array();
break;
case NEED_MORE:
if (json_object_get_type(jresponse) != json_type_array)
{
DBG1(DBG_IMC, "REST response was not a json_array");
json_object_put(jresponse);
return NULL;
}
break;
case FAILED:
default:
return NULL;
}
INIT(enumerator,
.public = {
.enumerate = enumerator_enumerate_default,
.venumerate = _enumerate,
.destroy = _enumerator_destroy,
},
.jarray = jresponse,
);
return &enumerator->public;
}
METHOD(sw_collector_rest_api_t, destroy, void,
private_sw_collector_rest_api_t *this)
{
this->rest_api->destroy(this->rest_api);
free(this);
}
/**
* Described in header.
*/
sw_collector_rest_api_t *sw_collector_rest_api_create(sw_collector_db_t *db)
{
private_sw_collector_rest_api_t *this;
int timeout;
char *uri;
uri = lib->settings->get_str(lib->settings, "%s.rest_api.uri", NULL,
lib->ns);
timeout = lib->settings->get_int(lib->settings, "%s.rest_api.timeout", 120,
lib->ns);
if (!uri)
{
DBG1(DBG_IMC, "REST URI to central collector database not set");
return NULL;
}
INIT(this,
.public = {
.create_sw_enumerator = _create_sw_enumerator,
.destroy = _destroy,
},
.db = db,
.rest_api = rest_create(uri, timeout),
);
return &this->public;
}
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