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Side by Side Diff: sandbox/win/src/top_level_dispatcher.cc

Issue 1851213002: Remove sandbox on Windows. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix nacl compile issues Created 4 years, 8 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "sandbox/win/src/top_level_dispatcher.h"
6
7 #include <stdint.h>
8 #include <string.h>
9
10 #include "base/logging.h"
11 #include "base/memory/scoped_ptr.h"
12 #include "sandbox/win/src/crosscall_server.h"
13 #include "sandbox/win/src/filesystem_dispatcher.h"
14 #include "sandbox/win/src/handle_dispatcher.h"
15 #include "sandbox/win/src/interception.h"
16 #include "sandbox/win/src/internal_types.h"
17 #include "sandbox/win/src/ipc_tags.h"
18 #include "sandbox/win/src/named_pipe_dispatcher.h"
19 #include "sandbox/win/src/process_mitigations_win32k_dispatcher.h"
20 #include "sandbox/win/src/process_thread_dispatcher.h"
21 #include "sandbox/win/src/registry_dispatcher.h"
22 #include "sandbox/win/src/sandbox_policy_base.h"
23 #include "sandbox/win/src/sync_dispatcher.h"
24
25 namespace sandbox {
26
27 TopLevelDispatcher::TopLevelDispatcher(PolicyBase* policy) : policy_(policy) {
28 // Initialize the IPC dispatcher array.
29 memset(ipc_targets_, 0, sizeof(ipc_targets_));
30 Dispatcher* dispatcher;
31
32 dispatcher = new FilesystemDispatcher(policy_);
33 ipc_targets_[IPC_NTCREATEFILE_TAG] = dispatcher;
34 ipc_targets_[IPC_NTOPENFILE_TAG] = dispatcher;
35 ipc_targets_[IPC_NTSETINFO_RENAME_TAG] = dispatcher;
36 ipc_targets_[IPC_NTQUERYATTRIBUTESFILE_TAG] = dispatcher;
37 ipc_targets_[IPC_NTQUERYFULLATTRIBUTESFILE_TAG] = dispatcher;
38 filesystem_dispatcher_.reset(dispatcher);
39
40 dispatcher = new NamedPipeDispatcher(policy_);
41 ipc_targets_[IPC_CREATENAMEDPIPEW_TAG] = dispatcher;
42 named_pipe_dispatcher_.reset(dispatcher);
43
44 dispatcher = new ThreadProcessDispatcher(policy_);
45 ipc_targets_[IPC_NTOPENTHREAD_TAG] = dispatcher;
46 ipc_targets_[IPC_NTOPENPROCESS_TAG] = dispatcher;
47 ipc_targets_[IPC_CREATEPROCESSW_TAG] = dispatcher;
48 ipc_targets_[IPC_NTOPENPROCESSTOKEN_TAG] = dispatcher;
49 ipc_targets_[IPC_NTOPENPROCESSTOKENEX_TAG] = dispatcher;
50 ipc_targets_[IPC_CREATETHREAD_TAG] = dispatcher;
51 thread_process_dispatcher_.reset(dispatcher);
52
53 dispatcher = new SyncDispatcher(policy_);
54 ipc_targets_[IPC_CREATEEVENT_TAG] = dispatcher;
55 ipc_targets_[IPC_OPENEVENT_TAG] = dispatcher;
56 sync_dispatcher_.reset(dispatcher);
57
58 dispatcher = new RegistryDispatcher(policy_);
59 ipc_targets_[IPC_NTCREATEKEY_TAG] = dispatcher;
60 ipc_targets_[IPC_NTOPENKEY_TAG] = dispatcher;
61 registry_dispatcher_.reset(dispatcher);
62
63 dispatcher = new HandleDispatcher(policy_);
64 ipc_targets_[IPC_DUPLICATEHANDLEPROXY_TAG] = dispatcher;
65 handle_dispatcher_.reset(dispatcher);
66
67 dispatcher = new ProcessMitigationsWin32KDispatcher(policy_);
68 ipc_targets_[IPC_GDI_GDIDLLINITIALIZE_TAG] = dispatcher;
69 ipc_targets_[IPC_GDI_GETSTOCKOBJECT_TAG] = dispatcher;
70 ipc_targets_[IPC_USER_REGISTERCLASSW_TAG] = dispatcher;
71 process_mitigations_win32k_dispatcher_.reset(dispatcher);
72 }
73
74 TopLevelDispatcher::~TopLevelDispatcher() {}
75
76 // When an IPC is ready in any of the targets we get called. We manage an array
77 // of IPC dispatchers which are keyed on the IPC tag so we normally delegate
78 // to the appropriate dispatcher unless we can handle the IPC call ourselves.
79 Dispatcher* TopLevelDispatcher::OnMessageReady(IPCParams* ipc,
80 CallbackGeneric* callback) {
81 DCHECK(callback);
82 static const IPCParams ping1 = {IPC_PING1_TAG, {UINT32_TYPE}};
83 static const IPCParams ping2 = {IPC_PING2_TAG, {INOUTPTR_TYPE}};
84
85 if (ping1.Matches(ipc) || ping2.Matches(ipc)) {
86 *callback = reinterpret_cast<CallbackGeneric>(
87 static_cast<Callback1>(&TopLevelDispatcher::Ping));
88 return this;
89 }
90
91 Dispatcher* dispatcher = GetDispatcher(ipc->ipc_tag);
92 if (!dispatcher) {
93 NOTREACHED();
94 return NULL;
95 }
96 return dispatcher->OnMessageReady(ipc, callback);
97 }
98
99 // Delegate to the appropriate dispatcher.
100 bool TopLevelDispatcher::SetupService(InterceptionManager* manager,
101 int service) {
102 if (IPC_PING1_TAG == service || IPC_PING2_TAG == service)
103 return true;
104
105 Dispatcher* dispatcher = GetDispatcher(service);
106 if (!dispatcher) {
107 NOTREACHED();
108 return false;
109 }
110 return dispatcher->SetupService(manager, service);
111 }
112
113 // We service IPC_PING_TAG message which is a way to test a round trip of the
114 // IPC subsystem. We receive a integer cookie and we are expected to return the
115 // cookie times two (or three) and the current tick count.
116 bool TopLevelDispatcher::Ping(IPCInfo* ipc, void* arg1) {
117 switch (ipc->ipc_tag) {
118 case IPC_PING1_TAG: {
119 IPCInt ipc_int(arg1);
120 uint32_t cookie = ipc_int.As32Bit();
121 ipc->return_info.extended_count = 2;
122 ipc->return_info.extended[0].unsigned_int = ::GetTickCount();
123 ipc->return_info.extended[1].unsigned_int = 2 * cookie;
124 return true;
125 }
126 case IPC_PING2_TAG: {
127 CountedBuffer* io_buffer = reinterpret_cast<CountedBuffer*>(arg1);
128 if (sizeof(uint32_t) != io_buffer->Size())
129 return false;
130
131 uint32_t* cookie = reinterpret_cast<uint32_t*>(io_buffer->Buffer());
132 *cookie = (*cookie) * 3;
133 return true;
134 }
135 default:
136 return false;
137 }
138 }
139
140 Dispatcher* TopLevelDispatcher::GetDispatcher(int ipc_tag) {
141 if (ipc_tag >= IPC_LAST_TAG || ipc_tag <= IPC_UNUSED_TAG)
142 return NULL;
143
144 return ipc_targets_[ipc_tag];
145 }
146
147 } // namespace sandbox
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