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
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <binder/Status.h>
namespace android {
namespace binder {
Status Status::ok() {
return Status();
}
Status Status::fromExceptionCode(int32_t exceptionCode) {
if (exceptionCode == EX_TRANSACTION_FAILED) {
return Status(exceptionCode, FAILED_TRANSACTION);
}
return Status(exceptionCode, OK);
}
Status Status::fromExceptionCode(int32_t exceptionCode,
const String8& message) {
if (exceptionCode == EX_TRANSACTION_FAILED) {
return Status(exceptionCode, FAILED_TRANSACTION, message);
}
return Status(exceptionCode, OK, message);
}
Status Status::fromExceptionCode(int32_t exceptionCode,
const char* message) {
return fromExceptionCode(exceptionCode, String8(message));
}
Status Status::fromServiceSpecificError(int32_t serviceSpecificErrorCode) {
return Status(EX_SERVICE_SPECIFIC, serviceSpecificErrorCode);
}
Status Status::fromServiceSpecificError(int32_t serviceSpecificErrorCode,
const String8& message) {
return Status(EX_SERVICE_SPECIFIC, serviceSpecificErrorCode, message);
}
Status Status::fromServiceSpecificError(int32_t serviceSpecificErrorCode,
const char* message) {
return fromServiceSpecificError(serviceSpecificErrorCode, String8(message));
}
Status Status::fromStatusT(status_t status) {
Status ret;
ret.setFromStatusT(status);
return ret;
}
std::string Status::exceptionToString(int32_t exceptionCode) {
switch (exceptionCode) {
#define EXCEPTION_TO_CASE(EXCEPTION) case EXCEPTION: return #EXCEPTION;
EXCEPTION_TO_CASE(EX_NONE)
EXCEPTION_TO_CASE(EX_SECURITY)
EXCEPTION_TO_CASE(EX_BAD_PARCELABLE)
EXCEPTION_TO_CASE(EX_ILLEGAL_ARGUMENT)
EXCEPTION_TO_CASE(EX_NULL_POINTER)
EXCEPTION_TO_CASE(EX_ILLEGAL_STATE)
EXCEPTION_TO_CASE(EX_NETWORK_MAIN_THREAD)
EXCEPTION_TO_CASE(EX_UNSUPPORTED_OPERATION)
EXCEPTION_TO_CASE(EX_SERVICE_SPECIFIC)
EXCEPTION_TO_CASE(EX_PARCELABLE)
EXCEPTION_TO_CASE(EX_HAS_REPLY_HEADER)
EXCEPTION_TO_CASE(EX_TRANSACTION_FAILED)
#undef EXCEPTION_TO_CASE
default: return std::to_string(exceptionCode);
}
}
Status::Status(int32_t exceptionCode, int32_t errorCode)
: mException(exceptionCode),
mErrorCode(errorCode) {}
Status::Status(int32_t exceptionCode, int32_t errorCode, const String8& message)
: mException(exceptionCode),
mErrorCode(errorCode),
mMessage(message) {}
status_t Status::readFromParcel(const Parcel& parcel) {
status_t status = parcel.readInt32(&mException);
if (status != OK) {
setFromStatusT(status);
return status;
}
// Skip over fat response headers. Not used (or propagated) in native code.
if (mException == EX_HAS_REPLY_HEADER) {
// Note that the header size includes the 4 byte size field.
const size_t header_start = parcel.dataPosition();
// Get available size before reading more
const size_t header_avail = parcel.dataAvail();
int32_t header_size;
status = parcel.readInt32(&header_size);
if (status != OK) {
setFromStatusT(status);
return status;
}
if (header_size < 0 || static_cast<size_t>(header_size) > header_avail) {
android_errorWriteLog(0x534e4554, "132650049");
setFromStatusT(UNKNOWN_ERROR);
return UNKNOWN_ERROR;
}
parcel.setDataPosition(header_start + header_size);
// And fat response headers are currently only used when there are no
// exceptions, so act like there was no error.
mException = EX_NONE;
}
if (mException == EX_NONE) {
return status;
}
// The remote threw an exception. Get the message back.
String16 message;
status = parcel.readString16(&message);
if (status != OK) {
setFromStatusT(status);
return status;
}
mMessage = String8(message);
// Skip over the remote stack trace data
int32_t remote_stack_trace_header_size;
status = parcel.readInt32(&remote_stack_trace_header_size);
if (status != OK) {
setFromStatusT(status);
return status;
}
if (remote_stack_trace_header_size < 0 ||
static_cast<size_t>(remote_stack_trace_header_size) > parcel.dataAvail()) {
android_errorWriteLog(0x534e4554, "132650049");
setFromStatusT(UNKNOWN_ERROR);
return UNKNOWN_ERROR;
}
parcel.setDataPosition(parcel.dataPosition() + remote_stack_trace_header_size);
if (mException == EX_SERVICE_SPECIFIC) {
status = parcel.readInt32(&mErrorCode);
} else if (mException == EX_PARCELABLE) {
// Skip over the blob of Parcelable data
const size_t header_start = parcel.dataPosition();
// Get available size before reading more
const size_t header_avail = parcel.dataAvail();
int32_t header_size;
status = parcel.readInt32(&header_size);
if (status != OK) {
setFromStatusT(status);
return status;
}
if (header_size < 0 || static_cast<size_t>(header_size) > header_avail) {
android_errorWriteLog(0x534e4554, "132650049");
setFromStatusT(UNKNOWN_ERROR);
return UNKNOWN_ERROR;
}
parcel.setDataPosition(header_start + header_size);
}
if (status != OK) {
setFromStatusT(status);
return status;
}
return status;
}
status_t Status::writeToParcel(Parcel* parcel) const {
// Something really bad has happened, and we're not going to even
// try returning rich error data.
if (mException == EX_TRANSACTION_FAILED) {
return mErrorCode;
}
status_t status = parcel->writeInt32(mException);
if (status != OK) return status;
if (mException == EX_NONE) {
// We have no more information to write.
return status;
}
status = parcel->writeString16(String16(mMessage));
if (status != OK) return status;
status = parcel->writeInt32(0); // Empty remote stack trace header
if (status != OK) return status;
if (mException == EX_SERVICE_SPECIFIC) {
status = parcel->writeInt32(mErrorCode);
} else if (mException == EX_PARCELABLE) {
// Sending Parcelable blobs currently not supported
status = parcel->writeInt32(0);
}
return status;
}
void Status::setException(int32_t ex, const String8& message) {
mException = ex;
mErrorCode = ex == EX_TRANSACTION_FAILED ? FAILED_TRANSACTION : NO_ERROR;
mMessage.setTo(message);
}
void Status::setServiceSpecificError(int32_t errorCode, const String8& message) {
setException(EX_SERVICE_SPECIFIC, message);
mErrorCode = errorCode;
}
void Status::setFromStatusT(status_t status) {
mException = (status == NO_ERROR) ? EX_NONE : EX_TRANSACTION_FAILED;
mErrorCode = status;
mMessage.clear();
}
String8 Status::toString8() const {
String8 ret;
if (mException == EX_NONE) {
ret.append("No error");
} else {
ret.appendFormat("Status(%d, %s): '", mException, exceptionToString(mException).c_str());
if (mException == EX_SERVICE_SPECIFIC) {
ret.appendFormat("%d: ", mErrorCode);
} else if (mException == EX_TRANSACTION_FAILED) {
ret.appendFormat("%s: ", statusToString(mErrorCode).c_str());
}
ret.append(String8(mMessage));
ret.append("'");
}
return ret;
}
} // namespace binder
} // namespace android
|
