1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*
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);
|
