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/*
* Copyright (c) 2019 Balabit
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "query.h"
static const gint QUERY_COMMAND = 0;
static gboolean query_is_get_sum = FALSE;
static gboolean query_reset = FALSE;
static gchar **raw_query_params = NULL;
GOptionEntry query_options[] =
{
{ "sum", 0, 0, G_OPTION_ARG_NONE, &query_is_get_sum, "aggregate sum", NULL },
{ "reset", 0, 0, G_OPTION_ARG_NONE, &query_reset, "reset counters after query", NULL },
{ G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_STRING_ARRAY, &raw_query_params, NULL, NULL },
{ NULL, 0, 0, G_OPTION_ARG_NONE, NULL, NULL, NULL }
};
enum
{
QUERY_CMD_LIST,
QUERY_CMD_LIST_RESET,
QUERY_CMD_GET,
QUERY_CMD_GET_RESET,
QUERY_CMD_GET_SUM,
QUERY_CMD_GET_SUM_RESET
};
static const gchar *QUERY_COMMANDS[] = {"LIST", "LIST_RESET", "GET", "GET_RESET", "GET_SUM", "GET_SUM_RESET"};
static gint
_get_query_list_cmd(void)
{
if (query_is_get_sum)
return -1;
if (query_reset)
return QUERY_CMD_LIST_RESET;
return QUERY_CMD_LIST;
}
static gint
_get_query_get_cmd(void)
{
if (query_is_get_sum)
{
if (query_reset)
return QUERY_CMD_GET_SUM_RESET;
return QUERY_CMD_GET_SUM;
}
if (query_reset)
return QUERY_CMD_GET_RESET;
return QUERY_CMD_GET;
}
static gint
_get_query_cmd(gchar *cmd)
{
if (g_str_equal(cmd, "list"))
return _get_query_list_cmd();
if (g_str_equal(cmd, "get"))
return _get_query_get_cmd();
return -1;
}
static gboolean
_is_query_params_empty(void)
{
return raw_query_params == NULL;
}
static void
_shift_query_command_out_of_params(void)
{
if (raw_query_params[QUERY_COMMAND] != NULL)
++raw_query_params;
}
static gboolean
_validate_get_params(gint query_cmd)
{
if(query_cmd == QUERY_CMD_GET || query_cmd == QUERY_CMD_GET_SUM)
if (*raw_query_params == NULL)
{
fprintf(stderr, "error: need a path argument\n");
return TRUE;
}
return FALSE;
}
static gchar *
_get_query_command_string(gint query_cmd)
{
gchar *query_params_to_pass, *command_to_dispatch;
query_params_to_pass = g_strjoinv(" ", raw_query_params);
if (query_params_to_pass)
{
command_to_dispatch = g_strdup_printf("QUERY %s %s", QUERY_COMMANDS[query_cmd], query_params_to_pass);
}
else
{
command_to_dispatch = g_strdup_printf("QUERY %s", QUERY_COMMANDS[query_cmd]);
}
g_free(query_params_to_pass);
return command_to_dispatch;
}
static gchar *
_get_dispatchable_query_command(void)
{
gint query_cmd;
if (_is_query_params_empty())
return NULL;
query_cmd = _get_query_cmd(raw_query_params[QUERY_COMMAND]);
if (query_cmd < 0)
return NULL;
_shift_query_command_out_of_params();
if(_validate_get_params(query_cmd))
return NULL;
return _get_query_command_string(query_cmd);
}
gint
slng_query(int argc, char *argv[], const gchar *mode, GOptionContext *ctx)
{
gint result;
gchar *cmd = _get_dispatchable_query_command();
if (cmd == NULL)
return 1;
result = dispatch_command(cmd);
g_free(cmd);
return result;
}
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