1 /* ----------------------------------------------------------------------- * 2 * 3 * Copyright 2007 H. Peter Anvin - All Rights Reserved 4 * Copyright 2011 Timothy J Gleason <timmgleason_at_gmail.com> - All Rights Reserved 5 * 6 * Permission is hereby granted, free of charge, to any person 7 * obtaining a copy of this software and associated documentation 8 * files (the "Software"), to deal in the Software without 9 * restriction, including without limitation the rights to use, 10 * copy, modify, merge, publish, distribute, sublicense, and/or 11 * sell copies of the Software, and to permit persons to whom 12 * the Software is furnished to do so, subject to the following 13 * conditions: 14 * 15 * The above copyright notice and this permission notice shall 16 * be included in all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 20 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 22 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 23 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 24 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 25 * OTHER DEALINGS IN THE SOFTWARE. 26 * 27 * ----------------------------------------------------------------------- */ 28 29 #include <stdint.h> 30 31 typedef struct dhcp { 32 uint8_t op; /* message opcode */ 33 uint8_t htype; /* Hardware address type */ 34 uint8_t hlen; /* Hardware address length */ 35 uint8_t hops; /* Used by relay agents */ 36 uint32_t xid; /* transaction id */ 37 uint16_t secs; /* Secs elapsed since client boot */ 38 uint16_t flags; /* DHCP Flags field */ 39 uint8_t ciaddr[4]; /* client IP addr */ 40 uint8_t yiaddr[4]; /* 'Your' IP addr. (from server) */ 41 uint8_t siaddr[4]; /* Boot server IP addr */ 42 uint8_t giaddr[4]; /* Relay agent IP addr */ 43 uint8_t chaddr[16]; /* Client hardware addr */ 44 uint8_t sname[64]; /* Optl. boot server hostname */ 45 uint8_t file[128]; /* boot file name (ascii path) */ 46 uint8_t cookie[4]; /* Magic cookie */ 47 uint8_t options[1020]; /* Options */ 48 } dhcp_t; 49 50