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samba-mirror/source3/include/nameserv.h
Jeremy Allison 8dc1a4f300 Ensure we use correct length nstrings for workgroup and browser names. 
Jeremy.
(This used to be commit be534c8adf)
2003-08-27 18:00:09 +00:00

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#ifndef _NAMESERV_H_
#define _NAMESERV_H_
/*
Unix SMB/CIFS implementation.
NBT netbios header - version 2
Copyright (C) Andrew Tridgell 1994-1998
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define INFO_VERSION "INFO/version"
#define INFO_COUNT "INFO/num_entries"
#define INFO_ID_HIGH "INFO/id_high"
#define INFO_ID_LOW "INFO/id_low"
#define ENTRY_PREFIX "ENTRY/"
#define PERMANENT_TTL 0
/* NTAS uses 2, NT uses 1, WfWg uses 0 */
#define MAINTAIN_LIST 2
#define ELECTION_VERSION 1
#define MAX_DGRAM_SIZE (576) /* tcp/ip datagram limit is 576 bytes */
#define MIN_DGRAM_SIZE 12
/*********************************************************
Types of reply packet.
**********************************************************/
enum netbios_reply_type_code { NMB_QUERY, NMB_STATUS, NMB_REG, NMB_REG_REFRESH,
NMB_REL, NMB_WAIT_ACK, NMB_MULTIHOMED_REG,
WINS_REG, WINS_QUERY };
/* From rfc1002, 4.2.1.2 */
/* Question types. */
#define QUESTION_TYPE_NB_QUERY 0x20
#define QUESTION_TYPE_NB_STATUS 0x21
/* Question class */
#define QUESTION_CLASS_IN 0x1
/* Opcode definitions */
#define NMB_NAME_QUERY_OPCODE 0x0
#define NMB_NAME_REG_OPCODE 0x05 /* see rfc1002.txt 4.2.2,3,5,6,7,8 */
#define NMB_NAME_RELEASE_OPCODE 0x06 /* see rfc1002.txt 4.2.9,10,11 */
#define NMB_WACK_OPCODE 0x07 /* see rfc1002.txt 4.2.16 */
/* Ambiguity in rfc1002 about which of these is correct. */
/* WinNT uses 8 by default but can be made to use 9. */
#define NMB_NAME_REFRESH_OPCODE_8 0x08 /* see rfc1002.txt 4.2.4 */
#define NMB_NAME_REFRESH_OPCODE_9 0x09 /* see rfc1002.txt 4.2.4 */
#define NMB_NAME_MULTIHOMED_REG_OPCODE 0x0F /* Invented by Microsoft. */
/* XXXX what about all the other types?? 0x1, 0x2, 0x3, 0x4, 0x8? */
/* Resource record types. rfc1002 4.2.1.3 */
#define RR_TYPE_A 0x1
#define RR_TYPE_NS 0x2
#define RR_TYPE_NULL 0xA
#define RR_TYPE_NB 0x20
#define RR_TYPE_NBSTAT 0x21
/* Resource record class. */
#define RR_CLASS_IN 0x1
/* NetBIOS flags */
#define NB_GROUP 0x80
#define NB_PERM 0x02
#define NB_ACTIVE 0x04
#define NB_CONFL 0x08
#define NB_DEREG 0x10
#define NB_BFLAG 0x00 /* Broadcast node type. */
#define NB_PFLAG 0x20 /* Point-to-point node type. */
#define NB_MFLAG 0x40 /* Mixed bcast & p-p node type. */
#define NB_HFLAG 0x60 /* Microsoft 'hybrid' node type. */
#define NB_NODETYPEMASK 0x60
/* Mask applied to outgoing NetBIOS flags. */
#define NB_FLGMSK 0xE0
/* The wins flags. Looks like the nbflags ! */
#define WINS_UNIQUE 0x00 /* Unique record */
#define WINS_NGROUP 0x01 /* Normal Group eg: 1B */
#define WINS_SGROUP 0x02 /* Special Group eg: 1C */
#define WINS_MHOMED 0x03 /* MultiHomed */
#define WINS_ACTIVE 0x00 /* active record */
#define WINS_RELEASED 0x04 /* released record */
#define WINS_TOMBSTONED 0x08 /* tombstoned record */
#define WINS_DELETED 0x0C /* deleted record */
#define WINS_STATE_MASK 0x0C
#define WINS_LOCAL 0x00 /* local record */
#define WINS_REMOTE 0x10 /* remote record */
#define WINS_BNODE 0x00 /* Broadcast node */
#define WINS_PNODE 0x20 /* PtP node */
#define WINS_MNODE 0x40 /* Mixed node */
#define WINS_HNODE 0x60 /* Hybrid node */
#define WINS_NONSTATIC 0x00 /* dynamic record */
#define WINS_STATIC 0x80 /* static record */
#define WINS_STATE_ACTIVE(p) (((p)->data.wins_flags & WINS_STATE_MASK) == WINS_ACTIVE)
/* NetBIOS flag identifier. */
#define NAME_GROUP(p) ((p)->data.nb_flags & NB_GROUP)
#define NAME_BFLAG(p) (((p)->data.nb_flags & NB_NODETYPEMASK) == NB_BFLAG)
#define NAME_PFLAG(p) (((p)->data.nb_flags & NB_NODETYPEMASK) == NB_PFLAG)
#define NAME_MFLAG(p) (((p)->data.nb_flags & NB_NODETYPEMASK) == NB_MFLAG)
#define NAME_HFLAG(p) (((p)->data.nb_flags & NB_NODETYPEMASK) == NB_HFLAG)
/* Samba name state for a name in a namelist. */
#define NAME_IS_ACTIVE(p) ((p)->data.nb_flags & NB_ACTIVE)
#define NAME_IN_CONFLICT(p) ((p)->data.nb_flags & NB_CONFL)
#define NAME_IS_DEREGISTERING(p) ((p)->data.nb_flags & NB_DEREG)
/* Error codes for NetBIOS requests. */
#define FMT_ERR 0x1 /* Packet format error. */
#define SRV_ERR 0x2 /* Internal server error. */
#define NAM_ERR 0x3 /* Name does not exist. */
#define IMP_ERR 0x4 /* Request not implemented. */
#define RFS_ERR 0x5 /* Request refused. */
#define ACT_ERR 0x6 /* Active error - name owned by another host. */
#define CFT_ERR 0x7 /* Name in conflict error. */
#define REFRESH_TIME (15*60)
#define NAME_POLL_REFRESH_TIME (5*60)
#define NAME_POLL_INTERVAL 15
/* Workgroup state identifiers. */
#define AM_POTENTIAL_MASTER_BROWSER(work) ((work)->mst_state == MST_POTENTIAL)
#define AM_LOCAL_MASTER_BROWSER(work) ((work)->mst_state == MST_BROWSER)
#define AM_DOMAIN_MASTER_BROWSER(work) ((work)->dom_state == DOMAIN_MST)
#define AM_DOMAIN_MEMBER(work) ((work)->log_state == LOGON_SRV)
/* Microsoft browser NetBIOS name. */
#define MSBROWSE "\001\002__MSBROWSE__\002"
/* Mail slots. */
#define BROWSE_MAILSLOT "\\MAILSLOT\\BROWSE"
#define NET_LOGON_MAILSLOT "\\MAILSLOT\\NET\\NETLOGON"
#define NT_LOGON_MAILSLOT "\\MAILSLOT\\NET\\NTLOGON"
#define LANMAN_MAILSLOT "\\MAILSLOT\\LANMAN"
/* Samba definitions for find_name_on_subnet(). */
#define FIND_ANY_NAME 0
#define FIND_SELF_NAME 1
/*
* The different name types that can be in namelists.
*
* SELF_NAME should only be on the broadcast and unicast subnets.
* LMHOSTS_NAME should only be in the remote_broadcast_subnet.
* REGISTER_NAME, DNS_NAME, DNSFAIL_NAME should only be in the wins_server_subnet.
* WINS_PROXY_NAME should only be on the broadcast subnets.
* PERMANENT_NAME can be on all subnets except remote_broadcast_subnet.
*
*/
enum name_source {LMHOSTS_NAME, REGISTER_NAME, SELF_NAME, DNS_NAME,
DNSFAIL_NAME, PERMANENT_NAME, WINS_PROXY_NAME};
enum node_type {B_NODE=0, P_NODE=1, M_NODE=2, NBDD_NODE=3};
enum packet_type {NMB_PACKET, DGRAM_PACKET};
enum master_state {
MST_NONE,
MST_POTENTIAL,
MST_BACKUP,
MST_MSB,
MST_BROWSER,
MST_UNBECOMING_MASTER
};
enum domain_state {
DOMAIN_NONE,
DOMAIN_WAIT,
DOMAIN_MST
};
enum logon_state {
LOGON_NONE,
LOGON_WAIT,
LOGON_SRV
};
struct subnet_record;
struct nmb_data {
uint16 nb_flags; /* Netbios flags. */
int num_ips; /* Number of ip entries. */
struct in_addr *ip; /* The ip list for this name. */
enum name_source source; /* Where the name came from. */
time_t death_time; /* The time the record must be removed (do not remove if 0). */
time_t refresh_time; /* The time the record should be refreshed. */
SMB_BIG_UINT id; /* unique id */
struct in_addr wins_ip; /* the adress of the wins server this record comes from */
int wins_flags; /* similar to the netbios flags but different ! */
};
/* This structure represents an entry in a local netbios name list. */
struct name_record {
ubi_trNode node[1];
struct subnet_record *subnet;
struct nmb_name name; /* The netbios name. */
struct nmb_data data; /* The netbios data. */
};
/* Browser cache for synchronising browse lists. */
struct browse_cache_record {
ubi_dlNode node[1];
nstring lmb_name;
nstring work_group;
struct in_addr ip;
time_t sync_time;
time_t death_time; /* The time the record must be removed. */
};
/* This is used to hold the list of servers in my domain, and is
contained within lists of domains. */
struct server_record {
struct server_record *next;
struct server_record *prev;
struct subnet_record *subnet;
struct server_info_struct serv;
time_t death_time;
};
/* A workgroup structure. It contains a list of servers. */
struct work_record {
struct work_record *next;
struct work_record *prev;
struct subnet_record *subnet;
struct server_record *serverlist;
/* Stage of development from non-local-master up to local-master browser. */
enum master_state mst_state;
/* Stage of development from non-domain-master to domain-master browser. */
enum domain_state dom_state;
/* Stage of development from non-logon-server to logon server. */
enum logon_state log_state;
/* Work group info. */
nstring work_group;
int token; /* Used when communicating with backup browsers. */
nstring local_master_browser_name; /* Current local master browser. */
/* Announce info. */
time_t lastannounce_time;
int announce_interval;
BOOL needannounce;
/* Timeout time for this workgroup. 0 means permanent. */
time_t death_time;
/* Election info */
BOOL RunningElection;
BOOL needelection;
int ElectionCount;
uint32 ElectionCriterion;
/* Domain master browser info. Used for efficient syncs. */
struct nmb_name dmb_name;
struct in_addr dmb_addr;
};
/* typedefs needed to define copy & free functions for userdata. */
struct userdata_struct;
typedef struct userdata_struct * (*userdata_copy_fn)(struct userdata_struct *);
typedef void (*userdata_free_fn)(struct userdata_struct *);
/* Structure to define any userdata passed around. */
struct userdata_struct {
userdata_copy_fn copy_fn;
userdata_free_fn free_fn;
unsigned int userdata_len;
char data[16]; /* 16 is to ensure alignment/padding on all systems */
};
struct response_record;
struct packet_struct;
struct res_rec;
/* typedef to define the function called when this response packet comes in. */
typedef void (*response_function)(struct subnet_record *, struct response_record *,
struct packet_struct *);
/* typedef to define the function called when this response record times out. */
typedef void (*timeout_response_function)(struct subnet_record *,
struct response_record *);
/* typedef to define the function called when the request that caused this
response record to be created is successful. */
typedef void (*success_function)(struct subnet_record *, struct userdata_struct *, ...);
/* typedef to define the function called when the request that caused this
response record to be created is unsuccessful. */
typedef void (*fail_function)(struct subnet_record *, struct response_record *, ...);
/* List of typedefs for success and fail functions of the different query
types. Used to catch any compile time prototype errors. */
typedef void (*register_name_success_function)( struct subnet_record *,
struct userdata_struct *,
struct nmb_name *,
uint16,
int,
struct in_addr);
typedef void (*register_name_fail_function)( struct subnet_record *,
struct response_record *,
struct nmb_name *);
typedef void (*release_name_success_function)( struct subnet_record *,
struct userdata_struct *,
struct nmb_name *,
struct in_addr);
typedef void (*release_name_fail_function)( struct subnet_record *,
struct response_record *,
struct nmb_name *);
typedef void (*refresh_name_success_function)( struct subnet_record *,
struct userdata_struct *,
struct nmb_name *,
uint16,
int,
struct in_addr);
typedef void (*refresh_name_fail_function)( struct subnet_record *,
struct response_record *,
struct nmb_name *);
typedef void (*query_name_success_function)( struct subnet_record *,
struct userdata_struct *,
struct nmb_name *,
struct in_addr,
struct res_rec *answers);
typedef void (*query_name_fail_function)( struct subnet_record *,
struct response_record *,
struct nmb_name *,
int);
typedef void (*node_status_success_function)( struct subnet_record *,
struct userdata_struct *,
struct res_rec *,
struct in_addr);
typedef void (*node_status_fail_function)( struct subnet_record *,
struct response_record *);
/* Initiated name queries are recorded in this list to track any responses. */
struct response_record {
struct response_record *next;
struct response_record *prev;
uint16 response_id;
/* Callbacks for packets received or not. */
response_function resp_fn;
timeout_response_function timeout_fn;
/* Callbacks for the request succeeding or not. */
success_function success_fn;
fail_function fail_fn;
struct packet_struct *packet;
struct userdata_struct *userdata;
int num_msgs;
time_t repeat_time;
time_t repeat_interval;
int repeat_count;
/* Recursion protection. */
BOOL in_expiration_processing;
};
/* A subnet structure. It contains a list of workgroups and netbios names. */
/*
B nodes will have their own, totally separate subnet record, with their
own netbios name set. These do NOT interact with other subnet records'
netbios names.
*/
enum subnet_type {
NORMAL_SUBNET = 0, /* Subnet listed in interfaces list. */
UNICAST_SUBNET = 1, /* Subnet for unicast packets. */
REMOTE_BROADCAST_SUBNET = 2, /* Subnet for remote broadcasts. */
WINS_SERVER_SUBNET = 3 /* Only created if we are a WINS server. */
};
struct subnet_record {
struct subnet_record *next;
struct subnet_record *prev;
char *subnet_name; /* For Debug identification. */
enum subnet_type type; /* To catagorize the subnet. */
struct work_record *workgrouplist; /* List of workgroups. */
ubi_trRoot namelist[1]; /* List of netbios names. */
struct response_record *responselist; /* List of responses expected. */
BOOL namelist_changed;
BOOL work_changed;
struct in_addr bcast_ip;
struct in_addr mask_ip;
struct in_addr myip;
int nmb_sock; /* socket to listen for unicast 137. */
int dgram_sock; /* socket to listen for unicast 138. */
};
/* A resource record. */
struct res_rec {
struct nmb_name rr_name;
int rr_type;
int rr_class;
int ttl;
int rdlength;
char rdata[MAX_DGRAM_SIZE];
};
/* Define these so we can pass info back to caller of name_query */
#define NM_FLAGS_RS 0x80 /* Response. Cheat */
#define NM_FLAGS_AA 0x40 /* Authoritative */
#define NM_FLAGS_TC 0x20 /* Truncated */
#define NM_FLAGS_RD 0x10 /* Recursion Desired */
#define NM_FLAGS_RA 0x08 /* Recursion Available */
#define NM_FLAGS_B 0x01 /* Broadcast */
/* An nmb packet. */
struct nmb_packet {
struct {
int name_trn_id;
int opcode;
BOOL response;
struct {
BOOL bcast;
BOOL recursion_available;
BOOL recursion_desired;
BOOL trunc;
BOOL authoritative;
} nm_flags;
int rcode;
int qdcount;
int ancount;
int nscount;
int arcount;
} header;
struct {
struct nmb_name question_name;
int question_type;
int question_class;
} question;
struct res_rec *answers;
struct res_rec *nsrecs;
struct res_rec *additional;
};
/* msg_type field options - from rfc1002. */
#define DGRAM_UNIQUE 0x10
#define DGRAM_GROUP 0x11
#define DGRAM_BROADCAST 0x12
#define DGRAM_ERROR 0x13
#define DGRAM_QUERY_REQUEST 0x14
#define DGRAM_POSITIVE_QUERY_RESPONSE 0x15
#define DGRAM_NEGATIVE_QUERT_RESPONSE 0x16
/* A datagram - this normally contains SMB data in the data[] array. */
struct dgram_packet {
struct {
int msg_type;
struct {
enum node_type node_type;
BOOL first;
BOOL more;
} flags;
int dgm_id;
struct in_addr source_ip;
int source_port;
int dgm_length;
int packet_offset;
} header;
struct nmb_name source_name;
struct nmb_name dest_name;
int datasize;
char data[MAX_DGRAM_SIZE];
};
/* Define a structure used to queue packets. This will be a linked
list of nmb packets. */
struct packet_struct
{
struct packet_struct *next;
struct packet_struct *prev;
BOOL locked;
struct in_addr ip;
int port;
int fd;
time_t timestamp;
enum packet_type packet_type;
union {
struct nmb_packet nmb;
struct dgram_packet dgram;
} packet;
};
/* NETLOGON opcodes */
#define QUERYFORPDC 7 /* Query for PDC. */
#define SAM_UAS_CHANGE 10 /* Announce change to UAS or SAM. */
#define QUERYFORPDC_R 12 /* Response to Query for PDC. */
#define SAMLOGON 18
#define SAMLOGON_R 19
#define SAMLOGON_UNK_R 21
#define SAMLOGON_AD_UNK_R 23
#define SAMLOGON_AD_R 25
/* Ids for netbios packet types. */
#define ANN_HostAnnouncement 1
#define ANN_AnnouncementRequest 2
#define ANN_Election 8
#define ANN_GetBackupListReq 9
#define ANN_GetBackupListResp 10
#define ANN_BecomeBackup 11
#define ANN_DomainAnnouncement 12
#define ANN_MasterAnnouncement 13
#define ANN_ResetBrowserState 14
#define ANN_LocalMasterAnnouncement 15
/* Broadcast packet announcement intervals, in minutes. */
/* Attempt to add domain logon and domain master names. */
#define CHECK_TIME_ADD_DOM_NAMES 5
/* Search for master browsers of workgroups samba knows about,
except default. */
#define CHECK_TIME_MST_BROWSE 5
/* Request backup browser announcements from other servers. */
#define CHECK_TIME_ANNOUNCE_BACKUP 15
/* Request host announcements from other servers: min and max of interval. */
#define CHECK_TIME_MIN_HOST_ANNCE 3
#define CHECK_TIME_MAX_HOST_ANNCE 12
/* Announce as master to WINS server and any Primary Domain Controllers. */
#define CHECK_TIME_MST_ANNOUNCE 15
/* Time between syncs from domain master browser to local master browsers. */
#define CHECK_TIME_DMB_TO_LMB_SYNC 15
/* Do all remote announcements this often. */
#define REMOTE_ANNOUNCE_INTERVAL 180
/* what is the maximum period between name refreshes. Note that this only
affects non-permanent self names (in seconds) */
#define MAX_REFRESH_TIME (60*20)
/* The Extinction interval: 4 days, time a node will stay in released state */
#define EXTINCTION_INTERVAL (4*24*60*60)
/* The Extinction time-out: 1 day, time a node will stay in deleted state */
#define EXTINCTION_TIMEOUT (24*60*60)
/* Macro's to enumerate subnets either with or without
the UNICAST subnet. */
extern struct subnet_record *subnetlist;
extern struct subnet_record *unicast_subnet;
extern struct subnet_record *wins_server_subnet;
extern struct subnet_record *remote_broadcast_subnet;
#define FIRST_SUBNET subnetlist
#define NEXT_SUBNET_EXCLUDING_UNICAST(x) ((x)->next)
#define NEXT_SUBNET_INCLUDING_UNICAST(x) (get_next_subnet_maybe_unicast((x)))
/* wins replication record used between nmbd and wrepld */
typedef struct _WINS_RECORD {
char name[17];
char type;
int nb_flags;
int wins_flags;
SMB_BIG_UINT id;
int num_ips;
struct in_addr ip[25];
struct in_addr wins_ip;
} WINS_RECORD;
/* To be removed. */
enum state_type { TEST };
#endif /* _NAMESERV_H_ */
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