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