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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
/*
Unix SMB/CIFS implementation.
Winbind daemon - WINS related functions
Copyright (C) Andrew Tridgell 1999
Copyright (C) Herb Lewis 2002
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/>.
*/
#include "includes.h"
#include "winbindd.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_WINBIND
/* Use our own create socket code so we don't recurse.... */
static int wins_lookup_open_socket_in(void)
{
struct sockaddr_in sock;
int val=1;
int res;
memset((char *)&sock,'\0',sizeof(sock));
#ifdef HAVE_SOCK_SIN_LEN
sock.sin_len = sizeof(sock);
#endif
sock.sin_port = 0;
sock.sin_family = AF_INET;
sock.sin_addr.s_addr = interpret_addr("0.0.0.0");
res = socket(AF_INET, SOCK_DGRAM, 0);
if (res == -1)
return -1;
if (setsockopt(res,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))) {
close(res);
return -1;
}
#ifdef SO_REUSEPORT
if (setsockopt(res,SOL_SOCKET,SO_REUSEPORT,(char *)&val,sizeof(val))) {
close(res);
return -1;
}
#endif /* SO_REUSEPORT */
/* now we've got a socket - we need to bind it */
if (bind(res, (struct sockaddr * ) &sock,sizeof(sock)) < 0) {
close(res);
return(-1);
}
set_socket_options(res,"SO_BROADCAST");
return res;
}
static NODE_STATUS_STRUCT *lookup_byaddr_backend(const char *addr, int *count)
{
int fd;
struct sockaddr_storage ss;
struct nmb_name nname;
NODE_STATUS_STRUCT *status;
fd = wins_lookup_open_socket_in();
if (fd == -1)
return NULL;
make_nmb_name(&nname, "*", 0);
if (!interpret_string_addr(&ss, addr, AI_NUMERICHOST)) {
return NULL;
}
status = node_status_query(fd, &nname, &ss, count, NULL);
close(fd);
return status;
}
static struct sockaddr_storage *lookup_byname_backend(const char *name,
int *count)
{
int fd;
struct ip_service *ret = NULL;
struct sockaddr_storage *return_ss = NULL;
int j, i, flags = 0;
*count = 0;
/* always try with wins first */
if (NT_STATUS_IS_OK(resolve_wins(name,0x20,&ret,count))) {
if ( *count == 0 )
return NULL;
if ( (return_ss = SMB_MALLOC_ARRAY(struct sockaddr_storage, *count)) == NULL ) {
free( ret );
return NULL;
}
/* copy the IP addresses */
for ( i=0; i<(*count); i++ )
return_ss[i] = ret[i].ss;
free( ret );
return return_ss;
}
fd = wins_lookup_open_socket_in();
if (fd == -1) {
return NULL;
}
/* uggh, we have to broadcast to each interface in turn */
for (j=iface_count() - 1;
j >= 0;
j--) {
const struct sockaddr_storage *bcast_ss = iface_n_bcast(j);
if (!bcast_ss) {
continue;
}
return_ss = name_query(fd,name,0x20,True,True,bcast_ss,count, &flags, NULL);
if (return_ss) {
break;
}
}
close(fd);
return return_ss;
}
/* Get hostname from IP */
void winbindd_wins_byip(struct winbindd_cli_state *state)
{
fstring response;
int i, count, maxlen, size;
NODE_STATUS_STRUCT *status;
/* Ensure null termination */
state->request.data.winsreq[sizeof(state->request.data.winsreq)-1]='\0';
DEBUG(3, ("[%5lu]: wins_byip %s\n", (unsigned long)state->pid,
state->request.data.winsreq));
*response = '\0';
maxlen = sizeof(response) - 1;
if ((status = lookup_byaddr_backend(state->request.data.winsreq, &count))){
size = strlen(state->request.data.winsreq);
if (size > maxlen) {
SAFE_FREE(status);
request_error(state);
return;
}
fstrcat(response,state->request.data.winsreq);
fstrcat(response,"\t");
for (i = 0; i < count; i++) {
/* ignore group names */
if (status[i].flags & 0x80) continue;
if (status[i].type == 0x20) {
size = sizeof(status[i].name) + strlen(response);
if (size > maxlen) {
SAFE_FREE(status);
request_error(state);
return;
}
fstrcat(response, status[i].name);
fstrcat(response, " ");
}
}
/* make last character a newline */
response[strlen(response)-1] = '\n';
SAFE_FREE(status);
}
fstrcpy(state->response.data.winsresp,response);
request_ok(state);
}
/* Get IP from hostname */
void winbindd_wins_byname(struct winbindd_cli_state *state)
{
struct sockaddr_storage *ip_list = NULL;
int i, count, maxlen, size;
fstring response;
char addr[INET6_ADDRSTRLEN];
/* Ensure null termination */
state->request.data.winsreq[sizeof(state->request.data.winsreq)-1]='\0';
DEBUG(3, ("[%5lu]: wins_byname %s\n", (unsigned long)state->pid,
state->request.data.winsreq));
*response = '\0';
maxlen = sizeof(response) - 1;
if ((ip_list = lookup_byname_backend(state->request.data.winsreq,&count))){
for (i = count; i ; i--) {
print_sockaddr(addr, sizeof(addr), &ip_list[i-1]);
size = strlen(addr);
if (size > maxlen) {
SAFE_FREE(ip_list);
request_error(state);
return;
}
if (i != 0) {
/* Clear out the newline character */
/* But only if there is something in there,
otherwise we clobber something in the stack */
if (strlen(response)) {
response[strlen(response)-1] = ' ';
}
}
fstrcat(response,addr);
fstrcat(response,"\t");
}
size = strlen(state->request.data.winsreq) + strlen(response);
if (size > maxlen) {
SAFE_FREE(ip_list);
request_error(state);
return;
}
fstrcat(response,state->request.data.winsreq);
fstrcat(response,"\n");
SAFE_FREE(ip_list);
} else {
request_error(state);
return;
}
fstrcpy(state->response.data.winsresp,response);
request_ok(state);
}
|
