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/*
* Copyright (c) 1993, 1994, 1995, 1996, 1998
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "pcap-int.h"
/*
* Private data for storing sets of options.
* This is to be used by functions which seem to grow additional options
* This is avoid ABI explosition of do_thing, and do_thing_with_opt_bar(),
* and then do_thing_with_opt_bar_baz(...). Instead a "pcap_option" should be
* created to which get/set shall be done.
*
* each option shall have an element in enum pcap_option_name {}.
*/
struct pcap_options {
int tstamp_precision;
const char *io_read_plugin;
const char *io_write_plugin;
};
pcap_options *pcap_alloc_option(void)
{
pcap_options *po = malloc(sizeof(struct pcap_options));
memset(po, 0, sizeof(struct pcap_options));
return po; // caller has to check for NULL anyway.
}
void pcap_free_option(pcap_options *po)
{
if(po != NULL) {
if(po->io_read_plugin) free((void *)po->io_read_plugin);
if(po->io_write_plugin) free((void *)po->io_write_plugin);
free((void *)po);
}
}
/* Return 0 on success, -1 on failure invalid option, -2 on type mismatch */
int pcap_set_option_string(pcap_options *po,
enum pcap_option_name pon,
const char *value)
{
const char *saved = strdup(value);
switch(pon) {
case PON_TSTAMP_PRECISION:
free((void *)saved);
return -2;
case PON_IO_READ_PLUGIN:
po->io_read_plugin = saved;
break;
case PON_IO_WRITE_PLUGIN:
po->io_write_plugin= saved;
break;
default:
free((void *)saved);
return -1;
}
return 0;
}
/* Return 0 on success, -1 on failure invalid option, -2 on type mismatch */
int pcap_set_option_int(pcap_options *po,
enum pcap_option_name pon,
const int value)
{
switch(pon) {
case PON_TSTAMP_PRECISION:
po->tstamp_precision = value;
break;
case PON_IO_READ_PLUGIN:
case PON_IO_WRITE_PLUGIN:
return -2;
default:
return -1;
}
return 0;
}
const char *pcap_get_option_string(pcap_options *po,
enum pcap_option_name pon)
{
switch(pon) {
case PON_TSTAMP_PRECISION:
return NULL;
case PON_IO_READ_PLUGIN:
return po->io_read_plugin;
case PON_IO_WRITE_PLUGIN:
return po->io_write_plugin;
}
return NULL;
}
/* return int value, or zero for not-found, mis-type */
int pcap_get_option_int(pcap_options *po,
enum pcap_option_name pon)
{
switch(pon) {
case PON_TSTAMP_PRECISION:
return po->tstamp_precision;
break;
case PON_IO_READ_PLUGIN:
case PON_IO_WRITE_PLUGIN:
return 0;
}
return 0;
}
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