1 /* dscp lookup routines lifted wholesale from openssh */ 2 3 /* 4 * Copyright (c) 2000 Markus Friedl. All rights reserved. 5 * Copyright (c) 2005,2006 Damien Miller. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #if HAVE_CONFIG_H 29 #include <config.h> 30 #endif 31 32 #include <stdio.h> 33 #if HAVE_STRING_H 34 #include <string.h> 35 #endif 36 #if HAVE_STDLIB_H 37 #include <stdlib.h> 38 #endif 39 40 #if HAVE_INTTYPES_H 41 #include <inttypes.h> 42 #endif 43 44 #ifdef WIN32 45 #define strcasecmp(a,b) _stricmp(a,b) 46 #define snprintf _snprintf 47 #endif 48 49 int parse_ipqos(const char *cp); 50 const char * iptos2str(int iptos); 51 52 /* 53 * Definitions for IP type of service (ip_tos) 54 */ 55 56 #if HAVE_NETINET_IN_SYSTM_H 57 #include <netinet/in_systm.h> 58 #endif 59 #if HAVE_NETINET_IP_H 60 #include <netinet/ip.h> 61 #endif 62 63 #ifndef IPTOS_LOWDELAY 64 # define IPTOS_LOWDELAY 0x10 65 # define IPTOS_THROUGHPUT 0x08 66 # define IPTOS_RELIABILITY 0x04 67 # define IPTOS_LOWCOST 0x02 68 # define IPTOS_MINCOST IPTOS_LOWCOST 69 #endif /* IPTOS_LOWDELAY */ 70 71 /* 72 * Definitions for DiffServ Codepoints as per RFC2474 73 */ 74 #ifndef IPTOS_DSCP_AF11 75 # define IPTOS_DSCP_AF11 0x28 76 # define IPTOS_DSCP_AF12 0x30 77 # define IPTOS_DSCP_AF13 0x38 78 # define IPTOS_DSCP_AF21 0x48 79 # define IPTOS_DSCP_AF22 0x50 80 # define IPTOS_DSCP_AF23 0x58 81 # define IPTOS_DSCP_AF31 0x68 82 # define IPTOS_DSCP_AF32 0x70 83 # define IPTOS_DSCP_AF33 0x78 84 # define IPTOS_DSCP_AF41 0x88 85 # define IPTOS_DSCP_AF42 0x90 86 # define IPTOS_DSCP_AF43 0x98 87 # define IPTOS_DSCP_EF 0xb8 88 #endif /* IPTOS_DSCP_AF11 */ 89 90 #ifndef IPTOS_DSCP_CS0 91 # define IPTOS_DSCP_CS0 0x00 92 # define IPTOS_DSCP_CS1 0x20 93 # define IPTOS_DSCP_CS2 0x40 94 # define IPTOS_DSCP_CS3 0x60 95 # define IPTOS_DSCP_CS4 0x80 96 # define IPTOS_DSCP_CS5 0xa0 97 # define IPTOS_DSCP_CS6 0xc0 98 # define IPTOS_DSCP_CS7 0xe0 99 #endif /* IPTOS_DSCP_CS0 */ 100 #ifndef IPTOS_DSCP_EF 101 # define IPTOS_DSCP_EF 0xb8 102 #endif /* IPTOS_DSCP_EF */ 103 104 static const struct { 105 const char *name; 106 int value; 107 } ipqos[] = { 108 { "af11", IPTOS_DSCP_AF11 }, 109 { "af12", IPTOS_DSCP_AF12 }, 110 { "af13", IPTOS_DSCP_AF13 }, 111 { "af21", IPTOS_DSCP_AF21 }, 112 { "af22", IPTOS_DSCP_AF22 }, 113 { "af23", IPTOS_DSCP_AF23 }, 114 { "af31", IPTOS_DSCP_AF31 }, 115 { "af32", IPTOS_DSCP_AF32 }, 116 { "af33", IPTOS_DSCP_AF33 }, 117 { "af41", IPTOS_DSCP_AF41 }, 118 { "af42", IPTOS_DSCP_AF42 }, 119 { "af43", IPTOS_DSCP_AF43 }, 120 { "cs0", IPTOS_DSCP_CS0 }, 121 { "cs1", IPTOS_DSCP_CS1 }, 122 { "cs2", IPTOS_DSCP_CS2 }, 123 { "cs3", IPTOS_DSCP_CS3 }, 124 { "cs4", IPTOS_DSCP_CS4 }, 125 { "cs5", IPTOS_DSCP_CS5 }, 126 { "cs6", IPTOS_DSCP_CS6 }, 127 { "cs7", IPTOS_DSCP_CS7 }, 128 { "ef", IPTOS_DSCP_EF }, 129 { "lowdelay", IPTOS_LOWDELAY }, 130 { "throughput", IPTOS_THROUGHPUT }, 131 { "reliability", IPTOS_RELIABILITY }, 132 { NULL, -1 } 133 }; 134 135 int 136 parse_ipqos(const char *cp) 137 { 138 unsigned int i; 139 char *ep = NULL; 140 long val; 141 142 if (cp == NULL) 143 return -1; 144 for (i = 0; ipqos[i].name != NULL; i++) { 145 if (strcasecmp(cp, ipqos[i].name) == 0) 146 return ipqos[i].value; 147 } 148 /* Try parsing as an integer */ 149 val = strtol(cp, &ep, 0); 150 if (*cp == '\0' || *ep != '\0' || val < 0 || val > 255) 151 return -1; 152 return val; 153 } 154 155 const char * 156 iptos2str(int iptos) 157 { 158 int i; 159 static char iptos_str[sizeof "0xff"]; 160 if (iptos < 0 || iptos > 64) iptos = 0; 161 for (i = 0; ipqos[i].name != NULL; i++) { 162 if (ipqos[i].value == iptos) 163 return ipqos[i].name; 164 } 165 snprintf(iptos_str, sizeof iptos_str, "0x%02x", iptos); 166 return iptos_str; 167 } 168
