The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* //device/libs/android_runtime/android_os_SystemProperties.cpp |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 4 | ** |
Elliott Hughes | 69a017b | 2011-04-08 14:10:28 -0700 | [diff] [blame] | 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 8 | ** |
Elliott Hughes | 69a017b | 2011-04-08 14:10:28 -0700 | [diff] [blame] | 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 10 | ** |
Elliott Hughes | 69a017b | 2011-04-08 14:10:28 -0700 | [diff] [blame] | 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #include "cutils/properties.h" |
| 19 | #include "jni.h" |
| 20 | #include "android_runtime/AndroidRuntime.h" |
| 21 | #include <nativehelper/JNIHelp.h> |
| 22 | |
| 23 | namespace android |
| 24 | { |
| 25 | |
| 26 | static jstring SystemProperties_getSS(JNIEnv *env, jobject clazz, |
| 27 | jstring keyJ, jstring defJ) |
| 28 | { |
| 29 | int len; |
| 30 | const char* key; |
| 31 | char buf[PROPERTY_VALUE_MAX]; |
| 32 | jstring rvJ = NULL; |
| 33 | |
| 34 | if (keyJ == NULL) { |
Elliott Hughes | 69a017b | 2011-04-08 14:10:28 -0700 | [diff] [blame] | 35 | jniThrowNullPointerException(env, "key must not be null."); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 36 | goto error; |
| 37 | } |
Mike Lockwood | d194595 | 2009-08-12 17:15:51 -0400 | [diff] [blame] | 38 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 39 | key = env->GetStringUTFChars(keyJ, NULL); |
Mike Lockwood | d194595 | 2009-08-12 17:15:51 -0400 | [diff] [blame] | 40 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 41 | len = property_get(key, buf, ""); |
| 42 | if ((len <= 0) && (defJ != NULL)) { |
| 43 | rvJ = defJ; |
| 44 | } else if (len >= 0) { |
| 45 | rvJ = env->NewStringUTF(buf); |
| 46 | } else { |
| 47 | rvJ = env->NewStringUTF(""); |
| 48 | } |
Mike Lockwood | d194595 | 2009-08-12 17:15:51 -0400 | [diff] [blame] | 49 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 50 | env->ReleaseStringUTFChars(keyJ, key); |
Mike Lockwood | d194595 | 2009-08-12 17:15:51 -0400 | [diff] [blame] | 51 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 52 | error: |
| 53 | return rvJ; |
| 54 | } |
| 55 | |
| 56 | static jstring SystemProperties_getS(JNIEnv *env, jobject clazz, |
| 57 | jstring keyJ) |
| 58 | { |
| 59 | return SystemProperties_getSS(env, clazz, keyJ, NULL); |
| 60 | } |
| 61 | |
Mike Lockwood | d194595 | 2009-08-12 17:15:51 -0400 | [diff] [blame] | 62 | static jint SystemProperties_get_int(JNIEnv *env, jobject clazz, |
| 63 | jstring keyJ, jint defJ) |
| 64 | { |
| 65 | int len; |
| 66 | const char* key; |
| 67 | char buf[PROPERTY_VALUE_MAX]; |
| 68 | jint result = defJ; |
| 69 | |
| 70 | if (keyJ == NULL) { |
Elliott Hughes | 69a017b | 2011-04-08 14:10:28 -0700 | [diff] [blame] | 71 | jniThrowNullPointerException(env, "key must not be null."); |
Mike Lockwood | d194595 | 2009-08-12 17:15:51 -0400 | [diff] [blame] | 72 | goto error; |
| 73 | } |
| 74 | |
| 75 | key = env->GetStringUTFChars(keyJ, NULL); |
| 76 | |
| 77 | len = property_get(key, buf, ""); |
| 78 | if (len > 0) { |
| 79 | jint temp; |
| 80 | if (sscanf(buf, "%d", &temp) == 1) |
| 81 | result = temp; |
| 82 | } |
| 83 | |
| 84 | env->ReleaseStringUTFChars(keyJ, key); |
| 85 | |
| 86 | error: |
| 87 | return result; |
| 88 | } |
| 89 | |
| 90 | static jlong SystemProperties_get_long(JNIEnv *env, jobject clazz, |
| 91 | jstring keyJ, jlong defJ) |
| 92 | { |
| 93 | int len; |
| 94 | const char* key; |
| 95 | char buf[PROPERTY_VALUE_MAX]; |
| 96 | jlong result = defJ; |
| 97 | |
| 98 | if (keyJ == NULL) { |
Elliott Hughes | 69a017b | 2011-04-08 14:10:28 -0700 | [diff] [blame] | 99 | jniThrowNullPointerException(env, "key must not be null."); |
Mike Lockwood | d194595 | 2009-08-12 17:15:51 -0400 | [diff] [blame] | 100 | goto error; |
| 101 | } |
| 102 | |
| 103 | key = env->GetStringUTFChars(keyJ, NULL); |
| 104 | |
| 105 | len = property_get(key, buf, ""); |
| 106 | if (len > 0) { |
| 107 | jlong temp; |
| 108 | if (sscanf(buf, "%lld", &temp) == 1) |
| 109 | result = temp; |
| 110 | } |
| 111 | |
| 112 | env->ReleaseStringUTFChars(keyJ, key); |
| 113 | |
| 114 | error: |
| 115 | return result; |
| 116 | } |
| 117 | |
| 118 | static jboolean SystemProperties_get_boolean(JNIEnv *env, jobject clazz, |
| 119 | jstring keyJ, jboolean defJ) |
| 120 | { |
| 121 | int len; |
| 122 | const char* key; |
| 123 | char buf[PROPERTY_VALUE_MAX]; |
| 124 | jboolean result = defJ; |
| 125 | |
| 126 | if (keyJ == NULL) { |
Elliott Hughes | 69a017b | 2011-04-08 14:10:28 -0700 | [diff] [blame] | 127 | jniThrowNullPointerException(env, "key must not be null."); |
Mike Lockwood | d194595 | 2009-08-12 17:15:51 -0400 | [diff] [blame] | 128 | goto error; |
| 129 | } |
| 130 | |
| 131 | key = env->GetStringUTFChars(keyJ, NULL); |
| 132 | |
| 133 | len = property_get(key, buf, ""); |
| 134 | if (len == 1) { |
| 135 | char ch = buf[0]; |
| 136 | if (ch == '0' || ch == 'n') |
| 137 | result = false; |
| 138 | else if (ch == '1' || ch == 'y') |
| 139 | result = true; |
| 140 | } else if (len > 1) { |
| 141 | if (!strcmp(buf, "no") || !strcmp(buf, "false") || !strcmp(buf, "off")) { |
| 142 | result = false; |
| 143 | } else if (!strcmp(buf, "yes") || !strcmp(buf, "true") || !strcmp(buf, "on")) { |
| 144 | result = true; |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | env->ReleaseStringUTFChars(keyJ, key); |
| 149 | |
| 150 | error: |
| 151 | return result; |
| 152 | } |
| 153 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 154 | static void SystemProperties_set(JNIEnv *env, jobject clazz, |
| 155 | jstring keyJ, jstring valJ) |
| 156 | { |
| 157 | int err; |
| 158 | const char* key; |
| 159 | const char* val; |
| 160 | |
| 161 | if (keyJ == NULL) { |
Elliott Hughes | 69a017b | 2011-04-08 14:10:28 -0700 | [diff] [blame] | 162 | jniThrowNullPointerException(env, "key must not be null."); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 163 | return ; |
| 164 | } |
| 165 | key = env->GetStringUTFChars(keyJ, NULL); |
| 166 | |
| 167 | if (valJ == NULL) { |
| 168 | val = ""; /* NULL pointer not allowed here */ |
| 169 | } else { |
| 170 | val = env->GetStringUTFChars(valJ, NULL); |
| 171 | } |
Brad Fitzpatrick | 06f3674 | 2011-03-10 16:04:59 -0800 | [diff] [blame] | 172 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 173 | err = property_set(key, val); |
Brad Fitzpatrick | 06f3674 | 2011-03-10 16:04:59 -0800 | [diff] [blame] | 174 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 175 | env->ReleaseStringUTFChars(keyJ, key); |
Brad Fitzpatrick | 06f3674 | 2011-03-10 16:04:59 -0800 | [diff] [blame] | 176 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 177 | if (valJ != NULL) { |
Brad Fitzpatrick | 06f3674 | 2011-03-10 16:04:59 -0800 | [diff] [blame] | 178 | env->ReleaseStringUTFChars(valJ, val); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 179 | } |
Brad Fitzpatrick | 06f3674 | 2011-03-10 16:04:59 -0800 | [diff] [blame] | 180 | |
| 181 | if (err < 0) { |
| 182 | jniThrowException(env, "java/lang/RuntimeException", |
| 183 | "failed to set system property"); |
| 184 | } |
| 185 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 186 | |
| 187 | static JNINativeMethod method_table[] = { |
| 188 | { "native_get", "(Ljava/lang/String;)Ljava/lang/String;", |
| 189 | (void*) SystemProperties_getS }, |
| 190 | { "native_get", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;", |
| 191 | (void*) SystemProperties_getSS }, |
Mike Lockwood | d194595 | 2009-08-12 17:15:51 -0400 | [diff] [blame] | 192 | { "native_get_int", "(Ljava/lang/String;I)I", |
| 193 | (void*) SystemProperties_get_int }, |
| 194 | { "native_get_long", "(Ljava/lang/String;J)J", |
| 195 | (void*) SystemProperties_get_long }, |
| 196 | { "native_get_boolean", "(Ljava/lang/String;Z)Z", |
| 197 | (void*) SystemProperties_get_boolean }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 198 | { "native_set", "(Ljava/lang/String;Ljava/lang/String;)V", |
| 199 | (void*) SystemProperties_set }, |
| 200 | }; |
| 201 | |
| 202 | int register_android_os_SystemProperties(JNIEnv *env) |
| 203 | { |
| 204 | return AndroidRuntime::registerNativeMethods( |
| 205 | env, "android/os/SystemProperties", |
| 206 | method_table, NELEM(method_table)); |
| 207 | } |
| 208 | |
| 209 | }; |