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/* dscp lookup routines lifted wholesale from openssh */
/*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
* Copyright (c) 2005,2006 Damien Miller. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <inttypes.h>
#ifdef WIN32
#define strcasecmp(a,b) _stricmp(a,b)
#define snprintf _snprintf
#endif
int parse_qos(const char *cp);
const char * iptos2str(int iptos);
/*
* Definitions for IP type of service (ip_tos)
*/
#ifdef HAVE_NETINET_IN_SYSTM_H
#include <netinet/in_systm.h>
#endif
#ifdef HAVE_NETINET_IP_H
#include <netinet/ip.h>
#endif
#ifndef IPTOS_LOWDELAY
# define IPTOS_LOWDELAY 0x10
# define IPTOS_THROUGHPUT 0x08
# define IPTOS_RELIABILITY 0x04
# define IPTOS_LOWCOST 0x02
# define IPTOS_MINCOST IPTOS_LOWCOST
#endif /* IPTOS_LOWDELAY */
/*
* Definitions for DiffServ Codepoints as per RFC2474
*/
#ifndef IPTOS_DSCP_AF11
# define IPTOS_DSCP_AF11 0x28
# define IPTOS_DSCP_AF12 0x30
# define IPTOS_DSCP_AF13 0x38
# define IPTOS_DSCP_AF21 0x48
# define IPTOS_DSCP_AF22 0x50
# define IPTOS_DSCP_AF23 0x58
# define IPTOS_DSCP_AF31 0x68
# define IPTOS_DSCP_AF32 0x70
# define IPTOS_DSCP_AF33 0x78
# define IPTOS_DSCP_AF41 0x88
# define IPTOS_DSCP_AF42 0x90
# define IPTOS_DSCP_AF43 0x98
# define IPTOS_DSCP_EF 0xb8
#endif /* IPTOS_DSCP_AF11 */
#ifndef IPTOS_DSCP_CS0
# define IPTOS_DSCP_CS0 0x00
# define IPTOS_DSCP_CS1 0x20
# define IPTOS_DSCP_CS2 0x40
# define IPTOS_DSCP_CS3 0x60
# define IPTOS_DSCP_CS4 0x80
# define IPTOS_DSCP_CS5 0xa0
# define IPTOS_DSCP_CS6 0xc0
# define IPTOS_DSCP_CS7 0xe0
#endif /* IPTOS_DSCP_CS0 */
#ifndef IPTOS_DSCP_EF
# define IPTOS_DSCP_EF 0xb8
#endif /* IPTOS_DSCP_EF */
static const struct {
const char *name;
int value;
} ipqos[] = {
{ "af11", IPTOS_DSCP_AF11 },
{ "af12", IPTOS_DSCP_AF12 },
{ "af13", IPTOS_DSCP_AF13 },
{ "af21", IPTOS_DSCP_AF21 },
{ "af22", IPTOS_DSCP_AF22 },
{ "af23", IPTOS_DSCP_AF23 },
{ "af31", IPTOS_DSCP_AF31 },
{ "af32", IPTOS_DSCP_AF32 },
{ "af33", IPTOS_DSCP_AF33 },
{ "af41", IPTOS_DSCP_AF41 },
{ "af42", IPTOS_DSCP_AF42 },
{ "af43", IPTOS_DSCP_AF43 },
{ "cs0", IPTOS_DSCP_CS0 },
{ "cs1", IPTOS_DSCP_CS1 },
{ "cs2", IPTOS_DSCP_CS2 },
{ "cs3", IPTOS_DSCP_CS3 },
{ "cs4", IPTOS_DSCP_CS4 },
{ "cs5", IPTOS_DSCP_CS5 },
{ "cs6", IPTOS_DSCP_CS6 },
{ "cs7", IPTOS_DSCP_CS7 },
{ "ef", IPTOS_DSCP_EF },
{ "lowdelay", IPTOS_LOWDELAY },
{ "throughput", IPTOS_THROUGHPUT },
{ "reliability", IPTOS_RELIABILITY },
{ NULL, -1 }
};
int
parse_qos(const char *cp)
{
unsigned int i;
char *ep = NULL;
long val;
if (cp == NULL)
return -1;
for (i = 0; ipqos[i].name != NULL; i++) {
if (strcasecmp(cp, ipqos[i].name) == 0)
return ipqos[i].value;
}
/* Try parsing as an integer */
val = strtol(cp, &ep, 0);
if (*cp == '\0' || *ep != '\0' || val < 0 || val > 255)
return -1;
return val;
}
const char *
iptos2str(int iptos)
{
int i;
static char iptos_str[sizeof "0xff"];
if (iptos < 0 || iptos > 64) iptos = 0;
for (i = 0; ipqos[i].name != NULL; i++) {
if (ipqos[i].value == iptos)
return ipqos[i].name;
}
snprintf(iptos_str, sizeof iptos_str, "0x%02x", iptos);
return iptos_str;
}
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