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/*
* This file has been modified from the original Samba package
* by Secure Networks Inc., January and February, 1997. This package and
* all code which it is based on falls under the GNU Public License
* agreement.
*/
/*
Unix SMB/Netbios implementation.
Version 1.9.
NBT netbios header - version 2
Copyright (C) Andrew Tridgell 1994-1995
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 MAX_DGRAM_SIZE 576
#define MIN_DGRAM_SIZE 12
#define NMB_PORT 137
#define DGRAM_PORT 138
#define SMB_PORT 139
enum name_source {LMHOSTS, REGISTER, SELF, DNS, DNSFAIL};
enum node_type {B_NODE=0, P_NODE=1, M_NODE=2, NBDD_NODE=3};
enum packet_type {NMB_PACKET, DGRAM_PACKET};
/* a netbios name structure */
struct nmb_name {
char name[17];
char scope[64];
int name_type;
};
/* this is the structure used for the local netbios name list */
struct name_record
{
struct name_record *next;
struct name_record *prev;
struct nmb_name name;
time_t death_time;
struct in_addr ip;
BOOL unique;
enum name_source source;
};
/* this is used by the list of domains */
struct domain_record
{
struct domain_record *next;
struct domain_record *prev;
fstring name;
time_t lastannounce_time;
int announce_interval;
struct in_addr bcast_ip;
};
/* this is used to hold the list of servers in my domain */
struct server_record
{
struct server_record *next;
struct server_record *prev;
fstring name;
fstring comment;
uint32 servertype;
time_t death_time;
};
/* 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 a 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;
};
/* 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;
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;
};
/* this defines a list of network interfaces */
struct net_interface {
struct net_interface *next;
struct in_addr ip;
struct in_addr bcast;
struct in_addr netmask;
};
/* prototypes */
void free_nmb_packet(struct nmb_packet *nmb);
void free_packet(struct packet_struct *packet);
struct packet_struct *read_packet(int fd,enum packet_type packet_type);
BOOL send_packet(struct packet_struct *p);
struct packet_struct *receive_packet(int fd,enum packet_type type,int timeout);
void make_nmb_name(struct nmb_name *n,char *name,int type,char *this_scope);
BOOL name_query(int fd,char *name,int name_type,
BOOL bcast,BOOL recurse,
struct in_addr to_ip, struct in_addr *ip,void (*fn)());
BOOL name_status(int fd,char *name,int name_type,BOOL recurse,
struct in_addr to_ip,char *master,char *rname,
void (*fn)());
BOOL send_mailslot_reply(char *mailslot,int fd,char *buf,int len,
char *srcname,char *dstname,
int src_type,int dest_type,
struct in_addr dest_ip,
struct in_addr src_ip);
char *namestr(struct nmb_name *n);
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