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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 3 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, see <http://www.gnu.org/licenses/>.
*/
#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
/* 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
enum node_type {B_NODE=0, P_NODE=1, M_NODE=2, NBDD_NODE=3};
enum packet_type {NMB_PACKET, DGRAM_PACKET};
#define MAX_NETBIOSNAME_LEN 16
/* DOS character, NetBIOS namestring. Type used on the wire. */
typedef char nstring[MAX_NETBIOSNAME_LEN];
/* Unix character, NetBIOS namestring. Type used to manipulate name in nmbd. */
typedef char unstring[MAX_NETBIOSNAME_LEN*4];
/* A netbios name structure. */
struct nmb_name {
nstring name;
char scope[64];
unsigned int name_type;
};
/* A netbios node status array element. */
struct node_status {
nstring name;
unsigned char type;
unsigned char flags;
};
/* The extra info from a NetBIOS node status query */
struct node_status_extra {
unsigned char mac_addr[6];
/* There really is more here ... */
};
/* 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
/* defined in IDL
#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 recv_fd;
int send_fd;
time_t timestamp;
enum packet_type packet_type;
union {
struct nmb_packet nmb;
struct dgram_packet dgram;
} packet;
};
/* 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
#endif /* _NAMESERV_H_ */
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