1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/types.h> 30 #include <stddef.h> 31 #include <stdlib.h> 32 #include <strings.h> 33 #include <netinet/in.h> 34 #include <netinet/dhcp.h> 35 #include "dhcp_impl.h" 36 37 /* 38 * Fetch a copy of the DHCP-supplied value of the parameter requested 39 * by code in value, and the parameter value length in *vallenp. 40 * 41 * Return values: 42 * 43 * B_FALSE If invalid code, or no parameter value. 44 * 45 * B_TRUE Valid code which has a parameter value. 46 * *vallenp is set to the parameter value length. 47 * If the parameter value length is less than or 48 * equal to *vallenp, value is set to the parameter 49 * value. 50 */ 51 52 boolean_t 53 dhcp_getinfo_pl(PKT_LIST *pl, uchar_t optcat, uint16_t code, uint16_t optsize, 54 void *value, size_t *vallenp) 55 { 56 57 if (pl == NULL) 58 return (B_FALSE); 59 60 if (optcat == DSYM_STANDARD) { 61 if (code > DHCP_LAST_OPT) 62 return (B_FALSE); 63 64 if (pl->opts[code] == NULL) 65 return (B_FALSE); 66 67 if (*vallenp < pl->opts[code]->len) { 68 *vallenp = pl->opts[code]->len; 69 return (B_TRUE); 70 } 71 72 bcopy(pl->opts[code]->value, value, pl->opts[code]->len); 73 *vallenp = pl->opts[code]->len; 74 75 } else if (optcat == DSYM_VENDOR) { 76 if (code > VS_OPTION_END) 77 return (B_FALSE); 78 79 if (pl->vs[code] == NULL) 80 return (B_FALSE); 81 82 if (*vallenp < pl->vs[code]->len) { 83 *vallenp = pl->vs[code]->len; 84 return (B_TRUE); 85 } 86 87 bcopy(pl->vs[code]->value, value, pl->vs[code]->len); 88 *vallenp = pl->vs[code]->len; 89 90 } else if (optcat == DSYM_FIELD) { 91 if (code + optsize > sizeof (PKT)) 92 return (B_FALSE); 93 94 if (*vallenp < optsize) { 95 *vallenp = optsize; 96 return (B_TRUE); 97 } 98 99 *vallenp = optsize; 100 bcopy((caddr_t)pl->pkt + code, value, optsize); 101 102 } else 103 return (B_FALSE); 104 105 return (B_TRUE); 106 } 107