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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/*
Unix SMB/Netbios implementation.
Version 1.9.
NBT netbios routines and daemon - version 2
Copyright (C) Andrew Tridgell 1994-1997
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.
Revision History:
14 jan 96: lkcl@pires.co.uk
added multiple workgroup domain master support
04 jul 96: lkcl@pires.co.uk
created module namedbserver containing server database functions
*/
#include "includes.h"
#include "smb.h"
extern int ClientNMB;
extern int ClientDGRAM;
extern int DEBUGLEVEL;
extern pstring myname;
/* this is our domain/workgroup/server database */
extern struct subnet_record *subnetlist;
extern BOOL updatedlists;
/*******************************************************************
expire old servers in the serverlist
time of -1 indicates everybody dies except those with time of 0
remove_all_servers indicates everybody dies.
******************************************************************/
void remove_old_servers(struct work_record *work, time_t t,
BOOL remove_all)
{
struct server_record *s;
struct server_record *nexts;
/* expire old entries in the serverlist */
for (s = work->serverlist; s; s = nexts)
{
if (remove_all || (s->death_time && (t == -1 || s->death_time < t)))
{
DEBUG(3,("Removing dead server %s\n",s->serv.name));
updatedlists = True;
nexts = s->next;
if (s->prev) s->prev->next = s->next;
if (s->next) s->next->prev = s->prev;
if (work->serverlist == s)
work->serverlist = s->next;
free(s);
}
else
{
nexts = s->next;
}
}
}
/***************************************************************************
add a server into the list
**************************************************************************/
static void add_server(struct work_record *work,struct server_record *s)
{
struct server_record *s2;
if (!work->serverlist) {
work->serverlist = s;
s->prev = NULL;
s->next = NULL;
return;
}
for (s2 = work->serverlist; s2->next; s2 = s2->next) ;
s2->next = s;
s->next = NULL;
s->prev = s2;
}
/****************************************************************************
find a server in a server list.
**************************************************************************/
struct server_record *find_server(struct work_record *work, char *name)
{
struct server_record *ret;
if (!work) return NULL;
for (ret = work->serverlist; ret; ret = ret->next)
{
if (strequal(ret->serv.name,name))
{
return ret;
}
}
return NULL;
}
/****************************************************************************
add a server entry
****************************************************************************/
struct server_record *add_server_entry(struct subnet_record *d,
struct work_record *work,
char *name,int servertype,
int ttl,char *comment,
BOOL replace)
{
BOOL newentry=False;
struct server_record *s;
if (name[0] == '*')
{
return (NULL);
}
s = find_server(work, name);
if (s && !replace)
{
DEBUG(4,("Not replacing %s\n",name));
return(s);
}
if (!s || s->serv.type != servertype || !strequal(s->serv.comment, comment))
updatedlists=True;
if (!s)
{
newentry = True;
s = (struct server_record *)malloc(sizeof(*s));
if (!s) return(NULL);
bzero((char *)s,sizeof(*s));
}
if (strequal(lp_workgroup(),work->work_group))
{
if (servertype)
servertype |= SV_TYPE_LOCAL_LIST_ONLY;
}
else
{
servertype &= ~SV_TYPE_LOCAL_LIST_ONLY;
}
/* update the entry */
StrnCpy(s->serv.name,name,sizeof(s->serv.name)-1);
StrnCpy(s->serv.comment,comment,sizeof(s->serv.comment)-1);
strupper(s->serv.name);
s->serv.type = servertype;
s->death_time = servertype ? (ttl?time(NULL)+ttl*3:0) : (time(NULL)-1);
/* for a domain entry, the comment field refers to the server name */
if (s->serv.type & SV_TYPE_DOMAIN_ENUM) strupper(s->serv.comment);
if (newentry)
{
add_server(work, s);
DEBUG(3,("Added "));
}
else
{
DEBUG(3,("Updated "));
}
DEBUG(3,("server entry %s of type %x (%s) to %s %s\n",
name,servertype,comment,
work->work_group,inet_ntoa(d->bcast_ip)));
return(s);
}
/*******************************************************************
expire old servers in the serverlist
******************************************************************/
void expire_servers(time_t t)
{
struct subnet_record *d;
for (d = FIRST_SUBNET; d ; d = NEXT_SUBNET_INCLUDING_WINS(d))
{
struct work_record *work;
for (work = d->workgrouplist; work; work = work->next)
{
remove_old_servers(work, t, False);
}
}
}
|
