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Android: Add wrappers for export/import of inbound group sessions

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This commit is contained in:
Yannick LE COLLEN 2017-01-18 15:33:14 +01:00 committed by Richard van der Hoff
parent 1761730db8
commit 3c02c1547c
5 changed files with 361 additions and 13 deletions
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102
android/olm-sdk/src/androidTest/java/org/matrix/olm/OlmGroupSessionTest.java
View file

@ -521,5 +521,107 @@ public class OlmGroupSessionTest {
assertTrue(0!=EXPECTED_ERROR_MESSAGE.length());
assertTrue(EXPECTED_ERROR_MESSAGE.equals(exceptionMessage));
}
/**
* Test the import/export functions.<br>
**/
@Test
public void test20TestInboundGroupSessionImportExport() {
String sessionKey = "AgAAAAAwMTIzNDU2Nzg5QUJERUYwMTIzNDU2Nzg5QUJDREVGMDEyMzQ1Njc4OUFCREVGM" +
"DEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkRFRjAxMjM0NTY3ODlBQkNERUYwMTIzND" +
"U2Nzg5QUJERUYwMTIzNDU2Nzg5QUJDREVGMDEyMw0bdg1BDq4Px/slBow06q8n/B9WBfw" +
"WYyNOB8DlUmXGGwrFmaSb9bR/eY8xgERrxmP07hFmD9uqA2p8PMHdnV5ysmgufE6oLZ5+" +
"8/mWQOW3VVTnDIlnwd8oHUYRuk8TCQ";
String message = "AwgAEhAcbh6UpbByoyZxufQ+h2B+8XHMjhR69G8F4+qjMaFlnIXusJZX3r8LnRORG9T3D" +
"XFdbVuvIWrLyRfm4i8QRbe8VPwGRFG57B1CtmxanuP8bHtnnYqlwPsD";
OlmInboundGroupSession inboundGroupSession = null;
try {
inboundGroupSession = new OlmInboundGroupSession(sessionKey);
} catch (Exception e) {
assertTrue("OlmInboundGroupSession failed " + e.getMessage(), false);
}
boolean isVerified = false;
try {
isVerified = inboundGroupSession.isVerified();
} catch (Exception e) {
assertTrue("isVerified failed " + e.getMessage(), false);
}
assertTrue(isVerified);
OlmInboundGroupSession.DecryptMessageResult result = null;
try {
result = inboundGroupSession.decryptMessage(message);
} catch (Exception e) {
assertTrue("decryptMessage failed " + e.getMessage(), false);
}
assertTrue(TextUtils.equals(result.mDecryptedMessage, "Message"));
assertTrue(0 == result.mIndex);
String export = null;
try {
export = inboundGroupSession.export(0);
} catch (Exception e) {
assertTrue("export failed " + e.getMessage(), false);
}
assertTrue(!TextUtils.isEmpty(export));
long index = -1;
try {
index = inboundGroupSession.getFirstKnownIndex();
} catch (Exception e) {
assertTrue("getFirstKnownIndex failed " + e.getMessage(), false);
}
assertTrue(index >=0);
inboundGroupSession.releaseSession();
inboundGroupSession = null;
OlmInboundGroupSession inboundGroupSession2 = null;
try {
inboundGroupSession2 = inboundGroupSession.importSession(export);
} catch (Exception e) {
assertTrue("OlmInboundGroupSession failed " + e.getMessage(), false);
}
try {
isVerified = inboundGroupSession2.isVerified();
} catch (Exception e) {
assertTrue("isVerified failed " + e.getMessage(), false);
}
assertFalse(isVerified);
result = null;
try {
result = inboundGroupSession2.decryptMessage(message);
} catch (Exception e) {
assertTrue("decryptMessage failed " + e.getMessage(), false);
}
assertTrue(TextUtils.equals(result.mDecryptedMessage, "Message"));
assertTrue(0 == result.mIndex);
try {
isVerified = inboundGroupSession2.isVerified();
} catch (Exception e) {
assertTrue("isVerified failed " + e.getMessage(), false);
}
assertTrue(isVerified);
inboundGroupSession2.releaseSession();
}
}

3
android/olm-sdk/src/main/java/org/matrix/olm/OlmException.java
View file

@ -40,6 +40,9 @@ public class OlmException extends IOException {
public static final int EXCEPTION_CODE_INIT_INBOUND_GROUP_SESSION = 201;
public static final int EXCEPTION_CODE_INBOUND_GROUP_SESSION_IDENTIFIER = 202;
public static final int EXCEPTION_CODE_INBOUND_GROUP_SESSION_DECRYPT_SESSION = 203;
public static final int EXCEPTION_CODE_INBOUND_GROUP_SESSION_FIRST_KNOWN_INDEX = 204;
public static final int EXCEPTION_CODE_INBOUND_GROUP_SESSION_IS_VERIFIED = 205;
public static final int EXCEPTION_CODE_INBOUND_GROUP_SESSION_EXPORT = 206;
public static final int EXCEPTION_CODE_CREATE_OUTBOUND_GROUP_SESSION = 300;
public static final int EXCEPTION_CODE_INIT_OUTBOUND_GROUP_SESSION = 301;

111
android/olm-sdk/src/main/java/org/matrix/olm/OlmInboundGroupSession.java
View file

@ -59,12 +59,24 @@ public class OlmInboundGroupSession extends CommonSerializeUtils implements Seri
* @throws OlmException constructor failure
*/
public OlmInboundGroupSession(String aSessionKey) throws OlmException {
this(aSessionKey, false);
}
/**
* Constructor.<br>
* Create and save a new native session instance ID and start a new inbound group session.
* The session key parameter is retrieved from an outbound group session.
* @param aSessionKey session key
* @param isImported true when the session key has been retrieved from a backup
* @throws OlmException constructor failure
*/
private OlmInboundGroupSession(String aSessionKey, boolean isImported) throws OlmException {
if (TextUtils.isEmpty(aSessionKey)) {
Log.e(LOG_TAG, "## initInboundGroupSession(): invalid session key");
throw new OlmException(OlmException.EXCEPTION_CODE_INIT_INBOUND_GROUP_SESSION, "invalid session key");
} else {
try {
mNativeId = createNewSessionJni(aSessionKey.getBytes("UTF-8"));
mNativeId = createNewSessionJni(aSessionKey.getBytes("UTF-8"), isImported);
} catch (Exception e) {
throw new OlmException(OlmException.EXCEPTION_CODE_INIT_INBOUND_GROUP_SESSION, e.getMessage());
}
@ -76,9 +88,20 @@ public class OlmInboundGroupSession extends CommonSerializeUtils implements Seri
* Since a C prt is returned as a jlong, special care will be taken
* to make the cast (OlmInboundGroupSession* to jlong) platform independent.
* @param aSessionKeyBuffer session key from an outbound session
* @param isImported true when the session key has been retrieved from a backup
* @return the initialized OlmInboundGroupSession* instance or throw an exception it fails.
**/
private native long createNewSessionJni(byte[] aSessionKeyBuffer);
private native long createNewSessionJni(byte[] aSessionKeyBuffer, boolean isImported);
/**
* Create an OlmInboundGroupSession from its exported session data.
* @param exported the exported data
* @return the created OlmException
* @throws OlmException the failure reason
*/
public static OlmInboundGroupSession importSession(String exported) throws OlmException {
return new OlmInboundGroupSession(exported, true);
}
/**
* Release native session and invalid its JAVA reference counter part.<br>
@ -95,7 +118,7 @@ public class OlmInboundGroupSession extends CommonSerializeUtils implements Seri
* Destroy the corresponding OLM inbound group session native object.<br>
* This method must ALWAYS be called when this JAVA instance
* is destroyed (ie. garbage collected) to prevent memory leak in native side.
* See {@link #createNewSessionJni(byte[])}.
* See {@link #createNewSessionJni(byte[], boolean)}.
*/
private native void releaseSessionJni();
@ -128,6 +151,86 @@ public class OlmInboundGroupSession extends CommonSerializeUtils implements Seri
*/
private native byte[] sessionIdentifierJni();
/**
* Provides the first known index.
* @return the first known index.
* @throws OlmException the failure reason
*/
public long getFirstKnownIndex() throws OlmException {
long index = 0;
try {
index = firstKnownIndexJni();
} catch (Exception e) {
Log.e(LOG_TAG, "## getFirstKnownIndex() failed " + e.getMessage());
throw new OlmException(OlmException.EXCEPTION_CODE_INBOUND_GROUP_SESSION_FIRST_KNOWN_INDEX, e.getMessage());
}
return index;
}
/**
* Provides the first known index.
* An exception is thrown if the operation fails.
* @return the first known index.
*/
private native long firstKnownIndexJni();
/**
* Tells if the session is verified.
* @return true if the session is verified
* @throws OlmException the failure reason
*/
public boolean isVerified() throws OlmException {
boolean isVerified;
try {
isVerified = isVerifiedJni();
} catch (Exception e) {
Log.e(LOG_TAG, "## isVerified() failed " + e.getMessage());
throw new OlmException(OlmException.EXCEPTION_CODE_INBOUND_GROUP_SESSION_IS_VERIFIED, e.getMessage());
}
return isVerified;
}
/**
* Tells if the session is verified.
* @return true if the session is verified
*/
private native boolean isVerifiedJni();
/**
* Export the session from a message index as String.
* @param messageIndex the message index
* @return the session as String
* @throws OlmException the failure reason
*/
public String export(long messageIndex) throws OlmException {
String result = null;
try {
byte[] bytesBuffer = exportJni(messageIndex);
if (null != bytesBuffer) {
result = new String(bytesBuffer, "UTF-8");
}
} catch (Exception e) {
Log.e(LOG_TAG, "## export() failed " + e.getMessage());
throw new OlmException(OlmException.EXCEPTION_CODE_INBOUND_GROUP_SESSION_EXPORT, e.getMessage());
}
return result;
}
/**
* Exports the session as byte array from a message index
* An exception is thrown if the operation fails.
* @param messageIndex key used to encrypt the serialized session data
* @return the session saved as bytes array
*/
private native byte[] exportJni(long messageIndex);
/**
* Decrypt the message passed in parameter.<br>
* In case of error, null is returned and an error message description is provided in aErrorMsg.
@ -156,7 +259,7 @@ public class OlmInboundGroupSession extends CommonSerializeUtils implements Seri
* Decrypt a message.
* An exception is thrown if the operation fails.
* @param aEncryptedMsg the encrypted message
* @param aDecryptMessageResult the decryptMessage informaton
* @param aDecryptMessageResult the decryptMessage information
* @return the decrypted message
*/
private native byte[] decryptMessageJni(byte[] aEncryptedMsg, DecryptMessageResult aDecryptMessageResult);

151
android/olm-sdk/src/main/jni/olm_inbound_group_session.cpp
View file

@ -54,9 +54,10 @@ JNIEXPORT void OLM_INBOUND_GROUP_SESSION_FUNC_DEF(releaseSessionJni)(JNIEnv *env
* Since a C prt is returned as a jlong, special care will be taken
* to make the cast (OlmInboundGroupSession* => jlong) platform independent.
* @param aSessionKeyBuffer session key from an outbound session
* @param isImported true when the session key has been retrieved from a backup
* @return the initialized OlmInboundGroupSession* instance or throw an exception it fails.
**/
JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *env, jobject thiz, jbyteArray aSessionKeyBuffer)
JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *env, jobject thiz, jbyteArray aSessionKeyBuffer, jboolean isImported)
{
const char* errorMessage = NULL;
OlmInboundGroupSession* sessionPtr = NULL;
@ -92,7 +93,18 @@ JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *
size_t sessionKeyLength = (size_t)env->GetArrayLength(aSessionKeyBuffer);
LOGD(" ## createNewSessionJni(): sessionKeyLength=%lu", static_cast<long unsigned int>(sessionKeyLength));
size_t sessionResult = olm_init_inbound_group_session(sessionPtr, (const uint8_t*)sessionKeyPtr, sessionKeyLength);
size_t sessionResult;
if (JNI_FALSE == isImported)
{
LOGD(" ## createNewSessionJni(): init");
sessionResult = olm_init_inbound_group_session(sessionPtr, (const uint8_t*)sessionKeyPtr, sessionKeyLength);
}
else
{
LOGD(" ## createNewSessionJni(): import");
sessionResult = olm_import_inbound_group_session(sessionPtr, (const uint8_t*)sessionKeyPtr, sessionKeyLength);
}
if (sessionResult == olm_error())
{
@ -110,11 +122,6 @@ JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *
env->ReleaseByteArrayElements(aSessionKeyBuffer, sessionKeyPtr, JNI_ABORT);
}
if (errorMessage)
{
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
}
if (errorMessage)
{
// release the allocated session
@ -123,7 +130,6 @@ JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *
olm_clear_inbound_group_session(sessionPtr);
free(sessionPtr);
}
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
}
@ -326,6 +332,135 @@ JNIEXPORT jbyteArray OLM_INBOUND_GROUP_SESSION_FUNC_DEF(decryptMessageJni)(JNIEn
return decryptedMsgBuffer;
}
/**
* Provides the first known index.
* An exception is thrown if the operation fails.
* @return the first known index
*/
JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(firstKnownIndexJni)(JNIEnv *env, jobject thiz)
{
const char* errorMessage = NULL;
OlmInboundGroupSession *sessionPtr = getInboundGroupSessionInstanceId(env, thiz);
long returnValue = 0;
LOGD("## firstKnownIndexJni(): inbound group session IN");
if (!sessionPtr)
{
LOGE(" ## firstKnownIndexJni(): failure - invalid inbound group session instance");
errorMessage = "invalid inbound group session instance";
}
else
{
returnValue = olm_inbound_group_session_first_known_index(sessionPtr);
}
if (errorMessage)
{
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
}
return returnValue;
}
/**
* Tells if the session is verified.
* An exception is thrown if the operation fails.
* @return true if the session is verified
*/
JNIEXPORT jboolean OLM_INBOUND_GROUP_SESSION_FUNC_DEF(isVerifiedJni)(JNIEnv *env, jobject thiz)
{
const char* errorMessage = NULL;
OlmInboundGroupSession *sessionPtr = getInboundGroupSessionInstanceId(env, thiz);
jboolean returnValue = JNI_FALSE;
LOGD("## isVerifiedJni(): inbound group session IN");
if (!sessionPtr)
{
LOGE(" ## isVerifiedJni(): failure - invalid inbound group session instance");
errorMessage = "invalid inbound group session instance";
}
else
{
LOGE(" ## isVerifiedJni(): faaa %d", olm_inbound_group_session_is_verified(sessionPtr));
returnValue = (0 != olm_inbound_group_session_is_verified(sessionPtr)) ? JNI_TRUE : JNI_FALSE;
}
if (errorMessage)
{
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
}
return returnValue;
}
/**
* Exports the session as byte array from a message index
* An exception is thrown if the operation fails.
* @param messageIndex key used to encrypt the serialized session data
* @return the session saved as bytes array
**/
JNIEXPORT jbyteArray OLM_INBOUND_GROUP_SESSION_FUNC_DEF(exportJni)(JNIEnv *env, jobject thiz, jlong messageIndex) {
jbyteArray exportedByteArray = 0;
const char* errorMessage = NULL;
OlmInboundGroupSession *sessionPtr = getInboundGroupSessionInstanceId(env, thiz);
LOGD("## exportJni(): inbound group session IN");
if (!sessionPtr)
{
LOGE(" ## exportJni (): failure - invalid inbound group session instance");
errorMessage = "invalid inbound group session instance";
}
else
{
size_t length = olm_export_inbound_group_session_length(sessionPtr);
LOGD(" ## exportJni(): length =%lu", static_cast<long unsigned int>(length));
void *bufferPtr = malloc(length * sizeof(uint8_t));
if (!bufferPtr)
{
LOGE(" ## exportJni(): failure - pickledPtr buffer OOM");
errorMessage = "pickledPtr buffer OOM";
}
else
{
size_t result = olm_export_inbound_group_session(sessionPtr,
(uint8_t*)bufferPtr,
length,
(long) messageIndex);
if (result == olm_error())
{
errorMessage = olm_inbound_group_session_last_error(sessionPtr);
LOGE(" ## exportJni(): failure - olm_export_inbound_group_session() Msg=%s", errorMessage);
}
else
{
LOGD(" ## exportJni(): success - result=%lu buffer=%.*s", static_cast<long unsigned int>(result), static_cast<int>(length), static_cast<char*>(bufferPtr));
exportedByteArray = env->NewByteArray(length);
env->SetByteArrayRegion(exportedByteArray, 0 , length, (jbyte*)bufferPtr);
// clean before leaving
memset(bufferPtr, 0, length);
}
free(bufferPtr);
}
}
if (errorMessage)
{
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
}
return exportedByteArray;
}
/**
* Serialize and encrypt session instance into a base64 string.<br>

7
android/olm-sdk/src/main/jni/olm_inbound_group_session.h
View file

@ -30,11 +30,16 @@ extern "C" {
// session creation/destruction
JNIEXPORT void OLM_INBOUND_GROUP_SESSION_FUNC_DEF(releaseSessionJni)(JNIEnv *env, jobject thiz);
JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *env, jobject thiz, jbyteArray aSessionKeyBuffer);
JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *env, jobject thiz, jbyteArray aSessionKeyBuffer, jboolean isImported);
JNIEXPORT jbyteArray OLM_INBOUND_GROUP_SESSION_FUNC_DEF(sessionIdentifierJni)(JNIEnv *env, jobject thiz);
JNIEXPORT jbyteArray OLM_INBOUND_GROUP_SESSION_FUNC_DEF(decryptMessageJni)(JNIEnv *env, jobject thiz, jbyteArray aEncryptedMsg, jobject aDecryptIndex);
JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(firstKnownIndexJni)(JNIEnv *env, jobject thiz);
JNIEXPORT jboolean OLM_INBOUND_GROUP_SESSION_FUNC_DEF(isVerifiedJni)(JNIEnv *env, jobject thiz);
JNIEXPORT jbyteArray OLM_INBOUND_GROUP_SESSION_FUNC_DEF(exportJni)(JNIEnv *env, jobject thiz, jlong messageIndex);
// serialization
JNIEXPORT jbyteArray OLM_INBOUND_GROUP_SESSION_FUNC_DEF(serializeJni)(JNIEnv *env, jobject thiz, jbyteArray aKey);
JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(deserializeJni)(JNIEnv *env, jobject thiz, jbyteArray aSerializedData, jbyteArray aKey);