File: [local] / src / sbin / dhcpleased / dhcpleased.h (download)
Revision 1.16, Fri Jan 26 21:14:08 2024 UTC (4 months ago) by jan
Branch: MAIN
CVS Tags: OPENBSD_7_5_BASE, OPENBSD_7_5, HEAD
Changes since 1.15: +2 -2 lines
Put checksum flags in bpf_hdr to use them in userland dhcpleased.
Thus, dhcpleased accept non-calculated checksums which were verified by
hardware/hypervisor.
With tweaks from dlg@
ok bluhm@
mkay tobhe@
|
/* $OpenBSD: dhcpleased.h,v 1.16 2024/01/26 21:14:08 jan Exp $ */
/*
* Copyright (c) 2017, 2021 Florian Obser <florian@openbsd.org>
* Copyright (c) 2004 Esben Norby <norby@openbsd.org>
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define _PATH_LOCKFILE "/dev/dhcpleased.lock"
#define _PATH_CONF_FILE "/etc/dhcpleased.conf"
#define _PATH_DHCPLEASED_SOCKET "/dev/dhcpleased.sock"
#define DHCPLEASED_USER "_dhcp"
#define DHCPLEASED_RTA_LABEL "dhcpleased"
#define SERVER_PORT 67
#define CLIENT_PORT 68
#define _PATH_LEASE "/var/db/dhcpleased/"
#define LEASE_VERSION "version: 2"
#define LEASE_IP_PREFIX "ip: "
#define LEASE_NEXTSERVER_PREFIX "next-server: "
#define LEASE_BOOTFILE_PREFIX "filename: "
#define LEASE_HOSTNAME_PREFIX "host-name: "
#define LEASE_DOMAIN_PREFIX "domain-name: "
#define LEASE_SIZE 4096
/* MAXDNAME from arpa/namesr.h */
#define DHCPLEASED_MAX_DNSSL 1025
#define MAX_RDNS_COUNT 8 /* max nameserver in a RTM_PROPOSAL */
/* A 1500 bytes packet can hold less than 300 classless static routes */
#define MAX_DHCP_ROUTES 256
#define DHCP_COOKIE {99, 130, 83, 99}
/* Possible values for hardware type (htype) field. */
#define HTYPE_NONE 0
#define HTYPE_ETHER 1
#define HTYPE_IPSEC_TUNNEL 31
/* DHCP op code */
#define DHCP_BOOTREQUEST 1
#define DHCP_BOOTREPLY 2
/* DHCP Option codes: */
#define DHO_PAD 0
#define DHO_SUBNET_MASK 1
#define DHO_TIME_OFFSET 2
#define DHO_ROUTERS 3
#define DHO_TIME_SERVERS 4
#define DHO_NAME_SERVERS 5
#define DHO_DOMAIN_NAME_SERVERS 6
#define DHO_LOG_SERVERS 7
#define DHO_COOKIE_SERVERS 8
#define DHO_LPR_SERVERS 9
#define DHO_IMPRESS_SERVERS 10
#define DHO_RESOURCE_LOCATION_SERVERS 11
#define DHO_HOST_NAME 12
#define DHO_BOOT_SIZE 13
#define DHO_MERIT_DUMP 14
#define DHO_DOMAIN_NAME 15
#define DHO_SWAP_SERVER 16
#define DHO_ROOT_PATH 17
#define DHO_EXTENSIONS_PATH 18
#define DHO_IP_FORWARDING 19
#define DHO_NON_LOCAL_SOURCE_ROUTING 20
#define DHO_POLICY_FILTER 21
#define DHO_MAX_DGRAM_REASSEMBLY 22
#define DHO_DEFAULT_IP_TTL 23
#define DHO_PATH_MTU_AGING_TIMEOUT 24
#define DHO_PATH_MTU_PLATEAU_TABLE 25
#define DHO_INTERFACE_MTU 26
#define DHO_ALL_SUBNETS_LOCAL 27
#define DHO_BROADCAST_ADDRESS 28
#define DHO_PERFORM_MASK_DISCOVERY 29
#define DHO_MASK_SUPPLIER 30
#define DHO_ROUTER_DISCOVERY 31
#define DHO_ROUTER_SOLICITATION_ADDRESS 32
#define DHO_STATIC_ROUTES 33
#define DHO_TRAILER_ENCAPSULATION 34
#define DHO_ARP_CACHE_TIMEOUT 35
#define DHO_IEEE802_3_ENCAPSULATION 36
#define DHO_DEFAULT_TCP_TTL 37
#define DHO_TCP_KEEPALIVE_INTERVAL 38
#define DHO_TCP_KEEPALIVE_GARBAGE 39
#define DHO_NIS_DOMAIN 40
#define DHO_NIS_SERVERS 41
#define DHO_NTP_SERVERS 42
#define DHO_VENDOR_ENCAPSULATED_OPTIONS 43
#define DHO_NETBIOS_NAME_SERVERS 44
#define DHO_NETBIOS_DD_SERVER 45
#define DHO_NETBIOS_NODE_TYPE 46
#define DHO_NETBIOS_SCOPE 47
#define DHO_FONT_SERVERS 48
#define DHO_X_DISPLAY_MANAGER 49
#define DHO_DHCP_REQUESTED_ADDRESS 50
#define DHO_DHCP_LEASE_TIME 51
#define DHO_DHCP_OPTION_OVERLOAD 52
#define DHO_DHCP_MESSAGE_TYPE 53
#define DHO_DHCP_SERVER_IDENTIFIER 54
#define DHO_DHCP_PARAMETER_REQUEST_LIST 55
#define DHO_DHCP_MESSAGE 56
#define DHO_DHCP_MAX_MESSAGE_SIZE 57
#define DHO_DHCP_RENEWAL_TIME 58
#define DHO_DHCP_REBINDING_TIME 59
#define DHO_DHCP_CLASS_IDENTIFIER 60
#define DHO_DHCP_CLIENT_IDENTIFIER 61
#define DHO_NISPLUS_DOMAIN 64
#define DHO_NISPLUS_SERVERS 65
#define DHO_TFTP_SERVER 66
#define DHO_BOOTFILE_NAME 67
#define DHO_MOBILE_IP_HOME_AGENT 68
#define DHO_SMTP_SERVER 69
#define DHO_POP_SERVER 70
#define DHO_NNTP_SERVER 71
#define DHO_WWW_SERVER 72
#define DHO_FINGER_SERVER 73
#define DHO_IRC_SERVER 74
#define DHO_STREETTALK_SERVER 75
#define DHO_STREETTALK_DIRECTORY_ASSISTANCE_SERVER 76
#define DHO_DHCP_USER_CLASS_ID 77
#define DHO_RELAY_AGENT_INFORMATION 82
#define DHO_NDS_SERVERS 85
#define DHO_NDS_TREE_NAME 86
#define DHO_NDS_CONTEXT 87
#define DHO_IPV6_ONLY_PREFERRED 108
#define DHO_DOMAIN_SEARCH 119
#define DHO_CLASSLESS_STATIC_ROUTES 121
#define DHO_TFTP_CONFIG_FILE 144
#define DHO_VOIP_CONFIGURATION_SERVER 150
#define DHO_CLASSLESS_MS_STATIC_ROUTES 249
#define DHO_AUTOPROXY_SCRIPT 252
#define DHO_END 255
#define DHO_COUNT 256 /* # of DHCP options */
/* DHCP message types. */
#define DHCPDISCOVER 1
#define DHCPOFFER 2
#define DHCPREQUEST 3
#define DHCPDECLINE 4
#define DHCPACK 5
#define DHCPNAK 6
#define DHCPRELEASE 7
#define DHCPINFORM 8
/* Ignore parts of DHCP lease */
#define IGN_ROUTES 1
#define IGN_DNS 2
#define MAX_SERVERS 16 /* max servers that can be ignored per if */
#define IMSG_DATA_SIZE(imsg) ((imsg).hdr.len - IMSG_HEADER_SIZE)
#define DHCP_SNAME_LEN 64
#define DHCP_FILE_LEN 128
struct dhcp_hdr {
uint8_t op; /* Message opcode/type */
uint8_t htype; /* Hardware addr type (see net/if_types.h) */
uint8_t hlen; /* Hardware addr length */
uint8_t hops; /* Number of relay agent hops from client */
uint32_t xid; /* Transaction ID */
uint16_t secs; /* Seconds since client started looking */
uint16_t flags; /* Flag bits */
struct in_addr ciaddr; /* Client IP address (if already in use) */
struct in_addr yiaddr; /* Client IP address */
struct in_addr siaddr; /* IP address of next server to talk to */
struct in_addr giaddr; /* DHCP relay agent IP address */
uint8_t chaddr[16]; /* Client hardware address */
char sname[DHCP_SNAME_LEN]; /* Server name */
char file[DHCP_FILE_LEN]; /* Boot filename */
};
struct imsgev {
struct imsgbuf ibuf;
void (*handler)(int, short, void *);
struct event ev;
short events;
};
struct dhcp_route {
struct in_addr dst;
struct in_addr mask;
struct in_addr gw;
};
enum imsg_type {
IMSG_NONE,
#ifndef SMALL
IMSG_CTL_LOG_VERBOSE,
IMSG_CTL_SHOW_INTERFACE_INFO,
IMSG_CTL_SEND_REQUEST,
IMSG_CTL_RELOAD,
IMSG_CTL_END,
IMSG_RECONF_CONF,
IMSG_RECONF_IFACE,
IMSG_RECONF_VC_ID,
IMSG_RECONF_C_ID,
IMSG_RECONF_H_NAME,
IMSG_RECONF_END,
#endif /* SMALL */
IMSG_SEND_DISCOVER,
IMSG_SEND_REQUEST,
IMSG_SOCKET_IPC,
IMSG_OPEN_BPFSOCK,
IMSG_BPFSOCK,
IMSG_UDPSOCK,
IMSG_CLOSE_UDPSOCK,
IMSG_ROUTESOCK,
IMSG_CONTROLFD,
IMSG_STARTUP,
IMSG_UPDATE_IF,
IMSG_REMOVE_IF,
IMSG_DHCP,
IMSG_CONFIGURE_INTERFACE,
IMSG_DECONFIGURE_INTERFACE,
IMSG_PROPOSE_RDNS,
IMSG_WITHDRAW_RDNS,
IMSG_WITHDRAW_ROUTES,
IMSG_REPROPOSE_RDNS,
IMSG_REQUEST_REBOOT,
};
#ifndef SMALL
struct ctl_engine_info {
uint32_t if_index;
int running;
int link_state;
char state[sizeof("IF_INIT_REBOOT")];
struct timespec request_time;
struct in_addr server_identifier;
struct in_addr dhcp_server; /* for unicast */
struct in_addr requested_ip;
struct in_addr mask;
struct dhcp_route routes[MAX_DHCP_ROUTES];
int routes_len;
struct in_addr nameservers[MAX_RDNS_COUNT];
uint32_t lease_time;
uint32_t renewal_time;
uint32_t rebinding_time;
};
struct iface_conf {
SIMPLEQ_ENTRY(iface_conf) entry;
char name[IF_NAMESIZE];
uint8_t *vc_id;
int vc_id_len;
uint8_t *c_id;
int c_id_len;
char *h_name;
int ignore;
struct in_addr ignore_servers[MAX_SERVERS];
int ignore_servers_len;
int prefer_ipv6;
};
struct dhcpleased_conf {
SIMPLEQ_HEAD(iface_conf_head, iface_conf) iface_list;
};
#endif /* SMALL */
struct imsg_ifinfo {
uint32_t if_index;
int rdomain;
int running;
int link_state;
struct ether_addr hw_address;
char lease[LEASE_SIZE];
};
struct imsg_propose_rdns {
uint32_t if_index;
int rdomain;
int rdns_count;
struct in_addr rdns[MAX_RDNS_COUNT];
};
struct imsg_dhcp {
uint32_t if_index;
ssize_t len;
uint16_t csumflags;
uint8_t packet[1500];
};
struct imsg_req_dhcp {
uint32_t if_index;
uint32_t xid;
struct in_addr ciaddr;
struct in_addr requested_ip;
struct in_addr server_identifier;
struct in_addr dhcp_server;
};
/* dhcpleased.c */
void imsg_event_add(struct imsgev *);
int imsg_compose_event(struct imsgev *, uint16_t, uint32_t,
pid_t, int, void *, uint16_t);
#ifndef SMALL
void config_clear(struct dhcpleased_conf *);
struct dhcpleased_conf *config_new_empty(void);
void merge_config(struct dhcpleased_conf *, struct
dhcpleased_conf *);
const char *sin_to_str(struct sockaddr_in *);
/* frontend.c */
struct iface_conf *find_iface_conf(struct iface_conf_head *, char *);
int *changed_ifaces(struct dhcpleased_conf *, struct
dhcpleased_conf *);
/* printconf.c */
void print_config(struct dhcpleased_conf *);
/* parse.y */
struct dhcpleased_conf *parse_config(const char *);
int cmdline_symset(char *);
#else
#define sin_to_str(x...) ""
#endif /* SMALL */
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