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Issue 575823002: Drop 10.5 support (Closed) Base URL: https://chromium.googlesource.com/crashpad/crashpad@master
Patch Set: Created 6 years, 3 months ago
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1 // Copyright 2014 The Crashpad Authors. All rights reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "util/mach/bootstrap.h"
16
17 #include <mach/mach.h>
18 #include <servers/bootstrap.h>
19 #include <string.h>
20
21 #include <algorithm>
22 #include <string>
23
24 #include "base/basictypes.h"
25 #include "base/mac/scoped_mach_port.h"
26 #include "base/rand_util.h"
27 #include "gtest/gtest.h"
28 #include "util/mach/mach_extensions.h"
29 #include "util/test/mac/mach_errors.h"
30
31 namespace {
32
33 using namespace crashpad;
34 using namespace crashpad::test;
35 using namespace testing;
36
37 TEST(Bootstrap, BootstrapCheckIn) {
38 std::string service_name = "com.googlecode.crashpad.test.bootstrap.";
39 for (int index = 0; index < 16; ++index) {
40 service_name.append(1, base::RandInt('A', 'Z'));
41 }
42
43 // The service shouldn’t be registered in the bootstrap namespace yet.
44 mach_port_t client_port = MACH_PORT_NULL;
45 kern_return_t kr =
46 bootstrap_look_up(bootstrap_port, service_name.c_str(), &client_port);
47 ASSERT_EQ(BOOTSTRAP_UNKNOWN_SERVICE, kr)
48 << BootstrapErrorMessage(kr, "bootstrap_look_up");
49
50 // Check in, getting a receive right.
51 mach_port_t server_port;
52 kr = BootstrapCheckIn(bootstrap_port, service_name.c_str(), &server_port);
53 ASSERT_EQ(BOOTSTRAP_SUCCESS, kr)
54 << BootstrapErrorMessage(kr, "bootstrap_check_in");
55 ASSERT_NE(kMachPortNull, server_port);
56 base::mac::ScopedMachReceiveRight server_port_owner(server_port);
57
58 // A subsequent checkin attempt should fail.
59 mach_port_t fail_port = MACH_PORT_NULL;
60 kr = BootstrapCheckIn(bootstrap_port, service_name.c_str(), &fail_port);
61 EXPECT_EQ(BOOTSTRAP_SERVICE_ACTIVE, kr);
62 EXPECT_EQ(kMachPortNull, fail_port);
63
64 // Look up the service, getting a send right.
65 kr = bootstrap_look_up(bootstrap_port, service_name.c_str(), &client_port);
66 ASSERT_EQ(BOOTSTRAP_SUCCESS, kr)
67 << BootstrapErrorMessage(kr, "bootstrap_look_up");
68 base::mac::ScopedMachSendRight client_port_owner(client_port);
69 EXPECT_NE(kMachPortNull, client_port);
70
71 // Have the “client” send a message to the “server”.
72 struct SendMessage {
73 mach_msg_header_t header;
74 char data[64];
75 };
76 SendMessage send_message = {};
77 send_message.header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0);
78 send_message.header.msgh_size = sizeof(send_message);
79 send_message.header.msgh_remote_port = client_port;
80 const char kMessageData[] = "Mach messaging is not a big truck";
81 const size_t message_data_size =
82 std::min(sizeof(kMessageData), sizeof(send_message.data));
83 memcpy(send_message.data, kMessageData, message_data_size);
84
85 // The receive operation happens in this same thread after the send, so use a
86 // non-blocking send (MACH_SEND_TIMEOUT with MACH_MSG_TIMEOUT_NONE). This is a
87 // small and simple message and the destination port’s queue should be empty
88 // so a non-blocking send should be successful.
89 kr = mach_msg(&send_message.header,
90 MACH_SEND_MSG | MACH_SEND_TIMEOUT,
91 send_message.header.msgh_size,
92 0,
93 MACH_PORT_NULL,
94 MACH_MSG_TIMEOUT_NONE,
95 MACH_PORT_NULL);
96 ASSERT_EQ(MACH_MSG_SUCCESS, kr) << MachErrorMessage(kr, "mach_msg");
97
98 struct ReceiveMessage : public SendMessage {
99 mach_msg_trailer_t trailer;
100 };
101 ReceiveMessage receive_message;
102 memset(&receive_message, 0xa5, sizeof(receive_message));
103
104 kr = mach_msg(&receive_message.header,
105 MACH_RCV_MSG | MACH_RCV_TIMEOUT,
106 0,
107 sizeof(receive_message),
108 server_port,
109 MACH_MSG_TIMEOUT_NONE,
110 MACH_PORT_NULL);
111 ASSERT_EQ(MACH_MSG_SUCCESS, kr) << MachErrorMessage(kr, "mach_msg");
112
113 EXPECT_EQ(sizeof(send_message), receive_message.header.msgh_size);
114 EXPECT_EQ(0, memcmp(receive_message.data, kMessageData, message_data_size));
115
116 // Make sure that the bootstrap server’s mapping disappears if the service
117 // does.
118 server_port_owner.reset();
119 server_port = MACH_PORT_NULL;
120
121 // With the server port gone, the client port should have become a dead name.
122 mach_port_type_t client_port_type;
123 kr = mach_port_type(mach_task_self(), client_port, &client_port_type);
124 ASSERT_EQ(KERN_SUCCESS, kr) << MachErrorMessage(kr, "mach_port_type");
125 EXPECT_EQ(MACH_PORT_TYPE_DEAD_NAME, client_port_type);
126
127 client_port_owner.reset();
128 client_port = MACH_PORT_NULL;
129
130 kr = bootstrap_look_up(bootstrap_port, service_name.c_str(), &client_port);
131 ASSERT_EQ(BOOTSTRAP_UNKNOWN_SERVICE, kr)
132 << BootstrapErrorMessage(kr, "bootstrap_look_up");
133 }
134
135 } // namespace
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