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
|
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/exo/wayland/fuzzer/harness.h"
{% for protocol in protocol_names %}
{% if protocol == 'wayland' %}
#include <wayland-client-core.h>
#include <wayland-client-protocol.h>
{% else %}
#include <{{protocol | replace('_','-')}}-client-protocol.h>
{% endif %}
{% endfor %}
#include <cstring>
#include <functional>
#include "base/check.h"
#include "components/exo/wayland/fuzzer/actions.pb.h"
namespace exo {
namespace wayland_fuzzer {
{% for interface in interfaces if interface.has_listener and interface.name != 'wl_display' %}
namespace {{interface.name}} {
{% for event in interface.events %}
void {{event.name}}(
void* data,
{{interface.cpp_type}} receiver
{% for arg in event.args %}
, {{arg.cpp_type}} {{arg.name}}
{% endfor %}
);
{% endfor %}
static const struct {{interface.name}}_listener kListener = {
{% for event in interface.events %}
{{event.name}},
{% endfor %}
};
} // namespace {{interface.name}}
{% endfor %}
{% for interface in interfaces if interface.name != 'wl_registry' %}
namespace {{interface.name}} {
{% for event in interface.events %}
void {{event.name}}(
void* data,
{{interface.cpp_type}} receiver
{% for arg in event.args %}
, {{arg.cpp_type}} {{arg.name}}
{% endfor %}
){
{% if event.is_constructor %}
Harness* harness = static_cast<Harness*>(data);
{% for arg in event.args if arg.type == 'new_id' %}
{{arg.cpp_type}} new_object = {{arg.name}};
{% endfor %}
{% if event.constructed_has_listener %}
{{event.constructed}}_add_listener(new_object, &{{event.constructed}}::kListener, harness);
{% endif %}
harness->add_{{event.constructed}}(new_object);
{% endif %}
{% for arg in event.args if arg.type == 'fd' %}
FILE* _f = fdopen({{arg.name}}, "w");
CHECK(_f);
fwrite(".", 1, 1, _f);
fclose(_f);
{% endfor %}
}
{% endfor %}
{% for request in interface.requests %}
void {{request.name}}(Harness* harness,
const actions::{{interface.name}}_{{request.name}}& action) {
{{interface.cpp_type}} receiver = harness->get_{{interface.name}}(action.receiver());
if (!receiver)
return;
{% for arg in request.args %}
{% if arg.type == 'object' %}
{{arg.cpp_type}} {{arg.name}} = harness->get_{{arg.interface}}(action.{{arg.name}}());
{% if not arg.nullable %}
if (!{{arg.name}})
return;
{% endif %}
{% elif arg.type == 'fd' %}
int {{arg.name}} = harness->GetFileDescriptor(action.{{arg.name}}());
{% elif arg.type == 'array' %}
wl_array {{arg.name}}{
/*size=*/action.{{arg.name}}().size(),
/*alloc=*/action.{{arg.name}}().capacity(),
/*data=*/const_cast<char*>(action.{{arg.name}}().data())
};
{% endif %}
{% endfor %}
{% if request.is_constructor %}
struct {{request.constructed}}* new_object =
{% endif %}
// Invoke the wayland method. We need ::method_name in order to
// disambiguate methods which might collide with
// interface/namespace names.
::{{interface.name}}_{{request.name}}(receiver
{% for arg in request.args %}
{% if arg.type == 'object' or arg.type == 'fd' %}
, {{arg.name}}
{% elif arg.type == 'array' %}
, &{{arg.name}}
{% elif arg.type != 'new_id' %}
, action.{{arg.name}}(){% if arg.type == 'string' %}.c_str(){% endif %}
{% endif %}
{% endfor %}
);
{% if request.is_constructor %}
{% if request.constructed_has_listener %}
{{request.constructed}}_add_listener(new_object, &{{request.constructed}}::kListener, harness);
{% endif %}
harness->add_{{request.constructed}}(new_object);
{% elif request.is_destructor %}
harness->remove_{{interface.name}}(action.receiver());
{% endif %}
}
{% endfor %}
} // namespace {{interface.name}}
{% endfor %}
namespace wl_registry {
void bind(Harness* harness, const actions::wl_registry_bind& action) {
struct wl_registry* receiver = harness->get_wl_registry(action.receiver());
if (!receiver)
return;
switch (action.global()) {
{% for interface in interfaces if interface.is_global %}
case actions::global::{{interface.name}}: {
if (harness->{{interface.name}}_globals_.empty())
return;
void* new_object = wl_registry_bind(
receiver, harness->{{interface.name}}_globals_[0].first,
&{{interface.name}}_interface, harness->{{interface.name}}_globals_[0].second);
{% if interface.has_listener and interface.name != 'wl_display' %}
{{interface.name}}_add_listener(static_cast<::{{interface.name}}*>(new_object), &{{interface.name}}::kListener, harness);
{% endif %}
harness->add_{{interface.name}}(
static_cast<::{{interface.name}}*>(new_object));
break;
}
{% endfor %}
case actions::global::global_INT_MIN_SENTINEL_DO_NOT_USE_:
case actions::global::global_INT_MAX_SENTINEL_DO_NOT_USE_:
case actions::global::GLOBAL_UNSPECIFIED:
break;
}
}
void global(void* data,
struct wl_registry* registry,
uint32_t name,
const char* interface,
uint32_t version) {
Harness* harness = static_cast<Harness*>(data);
{% for interface in interfaces if interface.is_global %}
if (strcmp(interface, "{{interface.name}}") == 0) {
harness->{{interface.name}}_globals_.emplace_back(name, version);
return;
}
{% endfor %}
}
} // namespace wl_registry
void wl_registry::global_remove(void* data, struct wl_registry* registry, uint32_t name) {}
Harness::Harness() {
wl_display_list_.emplace_back(wl_display_connect(nullptr));
DCHECK(wl_display_list_.front());
}
Harness::~Harness() {
{% for interface in interfaces %}
{% if interface.name != "wl_display" %}
for (auto ifc : {{interface.name}}_list_) {
if (ifc)
{{interface.name}}_destroy(ifc);
}
{% endif %}
{% endfor %}
// Destroy display last since it is the parent of all the others.
for (auto display_interface : wl_display_list_) {
wl_display_disconnect(display_interface);
}
}
void Harness::Run(const actions::actions& all_steps) {
for (const actions::action& current : all_steps.acts())
Run(current);
}
void Harness::Run(const actions::action& current_step) {
switch (current_step.act_case()) {
case actions::action::ActCase::ACT_NOT_SET:
wl_display_roundtrip(wl_display_list_.front());
break;
{% for interface in interfaces %}
{% for request in interface.requests %}
case actions::action::ActCase::kAct{{(interface.name + "_" + request.name) | replace('_', ' ') | title | replace(' ', '')}}:
{{interface.name}}::{{request.name}}(this, current_step.act_{{interface.name}}_{{request.name}}());
break;
{% endfor %}
{% endfor %}
}
}
int Harness::GetFileDescriptor(int id) {
if (shared_memory_map_.count(id) == 0) {
base::UnsafeSharedMemoryRegion region =
base::UnsafeSharedMemoryRegion::Create(1);
shared_memory_map_.emplace(id, std::move(region));
}
base::subtle::ScopedFDPair fd_pair =
base::UnsafeSharedMemoryRegion::TakeHandleForSerialization(
shared_memory_map_[id].Duplicate()).PassPlatformHandle();
return fd_pair.fd.release();
}
} // namespace wayland_fuzzer
} // namespace exo
|
