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
248
249
|
/********************************************************/
/* ntapi: Native API core library */
/* Copyright (C) 2013--2017 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
/********************************************************/
#include <psxtypes/psxtypes.h>
#include <ntapi/nt_file.h>
#include <ntapi/nt_string.h>
#include <ntapi/nt_atomic.h>
#include <ntapi/ntapi.h>
#include "ntapi_impl.h"
static int32_t __ipc_connect_return(
intptr_t * hlock,
int32_t status)
{
at_store(hlock,0);
return status;
}
static int32_t __ipc_connect_by_attr(
void ** hport,
const nt_port_attr * attr,
nt_unicode_string * str,
void * hconn,
__out void ** hsection,
__out void ** secaddr,
__out size_t * secsize)
{
int32_t status;
struct dalist_node_ex * node;
const nt_port_attr * conn;
nt_port_attr * nconn;
nt_ipc_conn * ipc;
intptr_t * hlock;
ntapi_internals * __internals;
/* init */
__internals = __ntapi_internals();
/* lock */
hlock = &(__internals->hlock);
if (at_locked_cas(hlock,0,1))
return NT_STATUS_RESOURCE_NOT_OWNED;
/* already connected? */
node = (struct dalist_node_ex *)__internals->ipc_conns.head;
for (; node; node=node->next) {
ipc = (nt_ipc_conn *)&node->dblock;
conn = &ipc->attr;
if ((attr->keys.key[0] == conn->keys.key[0])
&& (attr->keys.key[1] == conn->keys.key[1])
&& (attr->keys.key[2] == conn->keys.key[2])
&& (attr->keys.key[3] == conn->keys.key[3])
&& (attr->keys.key[4] == conn->keys.key[4])
&& (attr->keys.key[5] == conn->keys.key[5])
&& !__ntapi->tt_guid_compare(
&attr->guid,
&conn->guid)) {
/* already connected */
if (hconn)
return __ipc_connect_return(
hlock,
((uintptr_t)hconn == node->key)
? NT_STATUS_SUCCESS
: NT_STATUS_CONTEXT_MISMATCH);
*hport = (void *)node->key;
*hsection = ipc->hsection;
*secaddr = ipc->secaddr;
*secsize = ipc->secsize;
return __ipc_connect_return(hlock,NT_STATUS_SUCCESS);
}
}
/* allocate list node */
if ((status = dalist_get_free_node(
&__internals->ipc_conns,
(void **)&node)))
return __ipc_connect_return(hlock,status);
/* connect as needed */
if (!hconn) {
status = __ntapi->zw_connect_port(
&hconn,str,0,0,0,0,0,0);
if (status) {
dalist_deposit_free_node(
&__internals->ipc_conns,
node);
return __ipc_connect_return(hlock,status);
}
}
/* add connection */
node->key = (uintptr_t)hconn;
ipc = (nt_ipc_conn *)&node->dblock;
nconn = &ipc->attr;
__ntapi->tt_aligned_block_memcpy(
(uintptr_t *)nconn,
(uintptr_t *)attr,
sizeof(nt_port_attr));
ipc->hsection = 0;
ipc->secaddr = 0;
ipc->secsize = 0;
dalist_insert_node_by_key(
&__internals->ipc_conns,
node);
/* all done */
*hport = hconn;
*hsection = 0;
*secaddr = 0;
*secsize = 0;
return __ipc_connect_return(hlock,NT_STATUS_SUCCESS);
}
int32_t __stdcall __ntapi_ipc_connect_by_attr(
__out void ** hport,
__in nt_port_attr * attr)
{
nt_port_name name;
nt_unicode_string str;
__ntapi->tt_port_name_from_attr(
&name,attr);
str.strlen = ((size_t)&(((nt_port_name *)0)->null_termination));
str.maxlen = 0;
str.buffer = &name.base_named_objects[0];
return __ipc_connect_by_attr(
hport,attr,&str,0,
&(void *){0},
&(void *){0},
&(size_t){0});
}
int32_t __stdcall __ntapi_ipc_connect_by_name(
__out void ** hport,
__in nt_port_name * name)
{
int32_t status;
nt_port_attr attr;
nt_unicode_string str;
if ((status = __ntapi->tt_port_attr_from_name(&attr,name)))
return status;
str.strlen = ((size_t)&(((nt_port_name *)0)->null_termination));
str.maxlen = 0;
str.buffer = &name->base_named_objects[0];
return __ipc_connect_by_attr(
hport,&attr,&str,0,
&(void *){0},
&(void *){0},
&(size_t){0});
}
int32_t __stdcall __ntapi_ipc_connect_by_symlink(
__out void ** hport,
__in void * hsymlink)
{
int32_t status;
nt_port_attr attr;
nt_port_name * name;
size_t namelen;
uintptr_t buffer[512/sizeof(uintptr_t)];
nt_unicode_string * str;
str = (nt_unicode_string *)buffer;
str->strlen = 0;
str->maxlen = sizeof(buffer) - sizeof(nt_unicode_string);
str->buffer = (wchar16_t *)&str[1];
if ((status = __ntapi->zw_query_symbolic_link_object(
hsymlink,str,&namelen)))
return status;
if (str->strlen != ((size_t)&(((nt_port_name *)0)->null_termination)))
return NT_STATUS_INVALID_PORT_ATTRIBUTES;
name = (nt_port_name *)str->buffer;
if ((status = __ntapi->tt_port_attr_from_name(&attr,name)))
return status;
return __ipc_connect_by_attr(
hport,&attr,str,0,
&(void *){0},
&(void *){0},
&(size_t){0});
}
int32_t __stdcall __ntapi_ipc_connect_by_port(
__in void * hconn,
__in nt_port_attr * attr)
{
return __ipc_connect_by_attr(
&(void *){0},attr,0,hconn,
&(void *){0},
&(void *){0},
&(size_t){0});
}
int __ntapi_ipc_page_alloc(
struct dalist_ex * dlist,
void ** addr,
size_t * alloc_size)
{
int32_t status;
ntapi_internals * __internals;
__internals = __ntapi_internals();
if (__internals->ipc_page == __NT_IPC_PAGES)
return NT_STATUS_QUOTA_EXCEEDED;
if ((status = __ntapi->zw_allocate_virtual_memory(
NT_CURRENT_PROCESS_HANDLE,
addr,0,alloc_size,
NT_MEM_COMMIT,
NT_PAGE_READWRITE)))
return status;
dalist_deposit_memory_block(
dlist,*addr,*alloc_size);
__internals->ipc_pages[__internals->ipc_page++] = *addr;
return 0;
}
|