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
|
#include <u.h>
#include <libc.h>
#include <fcall.h>
#include <thread.h>
#include <9p.h>
#include "cifs.h"
static Pkt *
tnthdr(Session *s, Share *sp, int cmd)
{
Pkt *p;
p = cifshdr(s, sp, SMB_COM_NT_TRANSACT);
p->tbase = p8(p, 0); /* 0 Max setup count to return */
pl16(p, 0); /* 1 reserved */
pl32(p, 0); /* 3 Total parameter count */
pl32(p, 0); /* 7 Total data count */
pl32(p, 64); /* 11 Max parameter count to return */
pl32(p, (MTU - T2HDRLEN)-64); /* 15 Max data count to return */
pl32(p, 0); /* 19 Parameter count (in this buffer) */
pl32(p, 0); /* 23 Offset to parameters (in this buffer) */
pl32(p, 0); /* 27 Count of data in this buffer */
pl32(p, 0); /* 31 Offset to data in this buffer */
p8(p, 1); /* 35 Count of setup words */
pl16(p, cmd); /* 37 setup[0] */
pl16(p, 0); /* padding ??!?!? */
pbytes(p);
return p;
}
static void
ptntparam(Pkt *p)
{
uchar *pos = p->pos;
assert(p->tbase != 0);
p->pos = p->tbase +23;
pl32(p, (pos - p->buf) - NBHDRLEN); /* param offset */
p->tparam = p->pos = pos;
}
static void
ptntdata(Pkt *p)
{
uchar *pos = p->pos;
assert(p->tbase != 0);
assert(p->tparam != 0);
p->pos = p->tbase +3;
pl32(p, pos - p->tparam); /* total param count */
p->pos = p->tbase +19;
pl32(p, pos - p->tparam); /* param count */
p->pos = p->tbase +31;
pl32(p, (pos - p->buf) - NBHDRLEN); /* data offset */
p->tdata = p->pos = pos;
}
static int
tntrpc(Pkt *p)
{
int got;
uchar *pos;
assert(p->tbase != 0);
assert(p->tdata != 0);
pos = p->pos;
p->pos = p->tbase +7;
pl32(p, pos - p->tdata); /* total data count */
p->pos = p->tbase +27;
pl32(p, pos - p->tdata); /* data count */
p->pos = pos;
if((got = cifsrpc(p)) == -1)
return -1;
g8(p); /* Reserved */
g8(p); /* Reserved */
g8(p); /* Reserved */
gl32(p); /* Total parameter count */
gl32(p); /* Total data count */
gl32(p); /* Parameter count in this buffer */
p->tparam = p->buf +NBHDRLEN +gl32(p); /* Parameter offset */
gl32(p); /* Parameter displacement */
gl32(p); /* Data count (this buffer); */
p->tdata = p->buf +NBHDRLEN +gl32(p); /* Data offset */
gl32(p); /* Data displacement */
g8(p); /* Setup count */
gl16(p); /* padding ??? */
return got;
}
static void
gtntdata(Pkt *p)
{
p->pos = p->tdata;
}
int
TNTquerysecurity(Session *s, Share *sp, int fh, char **usid, char **gsid)
{
Pkt *p;
uchar *base;
Fmt fmt, *f = &fmt;
int n, i, off2owner, off2group;
p = tnthdr(s, sp, NT_TRANSACT_QUERY_SECURITY_DESC);
ptntparam(p);
pl16(p, fh); /* File handle */
pl16(p, 0); /* Reserved */
pl32(p, QUERY_OWNER_SECURITY_INFORMATION |
QUERY_GROUP_SECURITY_INFORMATION);
ptntdata(p);
if(tntrpc(p) == -1){
free(p);
return -1;
}
gtntdata(p);
base = p->pos;
gl16(p); /* revision */
gl16(p); /* type */
off2owner = gl32(p); /* offset to owner */
off2group = gl32(p); /* offset to group */
gl32(p);
gl32(p);
if(off2owner){
p->pos = base + off2owner;
fmtstrinit(f);
fmtprint(f, "S-%ud", g8(p)); /* revision */
n = g8(p); /* num auth */
fmtprint(f, "-%llud", gb48(p)); /* authority */
for(i = 0; i < n; i++)
fmtprint(f, "-%ud", gl32(p)); /* sub-authorities */
*usid = fmtstrflush(f);
}
if(off2group){
p->pos = base + off2group;
fmtstrinit(f);
fmtprint(f, "S-%ud", g8(p)); /* revision */
n = g8(p); /* num auth */
fmtprint(f, "-%llud", gb48(p)); /* authority */
for(i = 0; i < n; i++)
fmtprint(f, "-%ud", gl32(p)); /* sub-authorities */
*gsid = fmtstrflush(f);
}
free(p);
return 0;
}
|
