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