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b5581ed173
Extract Manufacturer Usage Description (MUD) URL from DHCP Option 161 and make it available to DHCP scripts as DNSMASQ_MUD_URL. See https://datatracker.ietf.org/doc/html/rfc8520#section-17.3 and https://datatracker.ietf.org/doc/html/rfc8520#section-10 Co-authored-by: Jasper Wiegratz <wiegratz@uni-bremen.de>
103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/* dnsmasq is Copyright (c) 2000-2022 Simon Kelley
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 dated June, 1991, or
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(at your option) version 3 dated 29 June, 2007.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define DHCP_SERVER_PORT 67
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#define DHCP_CLIENT_PORT 68
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#define DHCP_SERVER_ALTPORT 1067
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#define DHCP_CLIENT_ALTPORT 1068
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#define PXE_PORT 4011
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/* These each hold a DHCP option max size 255
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and get a terminating zero added */
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#define DHCP_BUFF_SZ 256
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#define BOOTREQUEST 1
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#define BOOTREPLY 2
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#define DHCP_COOKIE 0x63825363
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/* The Linux in-kernel DHCP client silently ignores any packet
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smaller than this. Sigh........... */
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#define MIN_PACKETSZ 300
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#define OPTION_PAD 0
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#define OPTION_NETMASK 1
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#define OPTION_ROUTER 3
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#define OPTION_DNSSERVER 6
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#define OPTION_HOSTNAME 12
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#define OPTION_DOMAINNAME 15
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#define OPTION_BROADCAST 28
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#define OPTION_VENDOR_CLASS_OPT 43
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#define OPTION_REQUESTED_IP 50
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#define OPTION_LEASE_TIME 51
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#define OPTION_OVERLOAD 52
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#define OPTION_MESSAGE_TYPE 53
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#define OPTION_SERVER_IDENTIFIER 54
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#define OPTION_REQUESTED_OPTIONS 55
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#define OPTION_MESSAGE 56
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#define OPTION_MAXMESSAGE 57
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#define OPTION_T1 58
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#define OPTION_T2 59
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#define OPTION_VENDOR_ID 60
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#define OPTION_CLIENT_ID 61
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#define OPTION_SNAME 66
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#define OPTION_FILENAME 67
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#define OPTION_USER_CLASS 77
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#define OPTION_RAPID_COMMIT 80
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#define OPTION_CLIENT_FQDN 81
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#define OPTION_AGENT_ID 82
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#define OPTION_ARCH 93
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#define OPTION_PXE_UUID 97
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#define OPTION_SUBNET_SELECT 118
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#define OPTION_DOMAIN_SEARCH 119
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#define OPTION_SIP_SERVER 120
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#define OPTION_VENDOR_IDENT 124
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#define OPTION_VENDOR_IDENT_OPT 125
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#define OPTION_MUD_URL_V4 161
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#define OPTION_END 255
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#define SUBOPT_CIRCUIT_ID 1
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#define SUBOPT_REMOTE_ID 2
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#define SUBOPT_SUBNET_SELECT 5 /* RFC 3527 */
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#define SUBOPT_SUBSCR_ID 6 /* RFC 3393 */
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#define SUBOPT_SERVER_OR 11 /* RFC 5107 */
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#define SUBOPT_PXE_BOOT_ITEM 71 /* PXE standard */
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#define SUBOPT_PXE_DISCOVERY 6
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#define SUBOPT_PXE_SERVERS 8
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#define SUBOPT_PXE_MENU 9
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#define SUBOPT_PXE_MENU_PROMPT 10
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#define DHCPDISCOVER 1
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#define DHCPOFFER 2
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#define DHCPREQUEST 3
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#define DHCPDECLINE 4
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#define DHCPACK 5
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#define DHCPNAK 6
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#define DHCPRELEASE 7
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#define DHCPINFORM 8
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#define BRDBAND_FORUM_IANA 3561 /* Broadband forum IANA enterprise */
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#define DHCP_CHADDR_MAX 16
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struct dhcp_packet {
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u8 op, htype, hlen, hops;
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u32 xid;
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u16 secs, flags;
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struct in_addr ciaddr, yiaddr, siaddr, giaddr;
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u8 chaddr[DHCP_CHADDR_MAX], sname[64], file[128];
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u8 options[312];
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};
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