You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
2.3 KiB
81 lines
2.3 KiB
// Copyright 2018 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 <cutils/properties.h>
|
|
|
|
#include "AndroidHostCommon.h"
|
|
|
|
#include "base/Lock.h"
|
|
|
|
#include <string>
|
|
#include <unordered_map>
|
|
|
|
#include <string.h>
|
|
|
|
using android::base::AutoLock;
|
|
using android::base::Lock;
|
|
|
|
class AndroidSystemProperties {
|
|
public:
|
|
AndroidSystemProperties() = default;
|
|
~AndroidSystemProperties() = default;
|
|
|
|
int get(const char* key, char* value, const char* default_value) {
|
|
AutoLock lock(mLock);
|
|
auto it = mProps.find(key);
|
|
if (it == mProps.end()) {
|
|
if (!default_value) return 0;
|
|
return getPropertyWithValueLimit(value, default_value);
|
|
}
|
|
const char* storedValue = it->second.data();
|
|
return getPropertyWithValueLimit(value, storedValue);
|
|
}
|
|
|
|
int set(const char *key, const char *value) {
|
|
AutoLock lock(mLock);
|
|
mProps[key] = value;
|
|
return 0;
|
|
}
|
|
|
|
private:
|
|
int getPropertyWithValueLimit(char* dst, const char* src) {
|
|
size_t totalStrlen = strlen(src);
|
|
size_t maxPropStrlen = PROPERTY_VALUE_MAX - 1;
|
|
size_t copyStrlen =
|
|
maxPropStrlen < totalStrlen ? maxPropStrlen : totalStrlen;
|
|
memcpy(dst, src, copyStrlen);
|
|
dst[copyStrlen] = '\0';
|
|
return (int)copyStrlen;
|
|
}
|
|
|
|
Lock mLock;
|
|
std::unordered_map<std::string, std::string> mProps;
|
|
};
|
|
|
|
static AndroidSystemProperties* sProps() {
|
|
static AndroidSystemProperties* p = new AndroidSystemProperties;
|
|
return p;
|
|
}
|
|
|
|
extern "C" {
|
|
|
|
EXPORT int property_get(const char* key, char* value, const char* default_value) {
|
|
return sProps()->get(key, value, default_value);
|
|
}
|
|
|
|
EXPORT int property_set(const char *key, const char *value) {
|
|
return sProps()->set(key, value);
|
|
}
|
|
|
|
} // extern "C"
|