/***********************************************************************
* Gathers in and handles records/messages until either the handshake is
* complete or application data is available.
*
* Called from ssl_Do1stHandshake() via function pointer ss->handshake.
* Caller must hold handshake lock.
* This function acquires and releases the RecvBufLock.
*
* returns SECSuccess for success.
* returns SECWouldBlock when that value is returned by
* ssl3_GatherCompleteHandshake().
* returns SECFailure on all other errors.
*
* The gather functions called by ssl_GatherRecord1stHandshake are expected
* to return values interpreted as follows:
* 1 : the function completed without error.
* 0 : the function read EOF.
* -1 : read error, or PR_WOULD_BLOCK_ERROR, or handleRecord error.
* -2 : the function wants ssl_GatherRecord1stHandshake to be called again
* immediately, by ssl_Do1stHandshake.
*
* This code is similar to, and easily confused with, DoRecv() in sslsecur.c
*
* This function is called from ssl_Do1stHandshake().
* The following functions put ssl_GatherRecord1stHandshake into ss->handshake:
* ssl_BeginClientHandshake
* ssl3_RestartHandshakeAfterCertReq
* ssl3_RestartHandshakeAfterServerCert
* ssl_BeginServerHandshake
*/
SECStatus
ssl_GatherRecord1stHandshake(sslSocket *ss)
{
int rv;
PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
ssl_GetRecvBufLock(ss);
/* Wait for handshake to complete, or application data to arrive. */
rv = ssl3_GatherCompleteHandshake(ss, 0);
SSL_TRC(10, ("%d: SSL[%d]: handshake gathering, rv=%d",
SSL_GETPID(), ss->fd, rv));
ssl_ReleaseRecvBufLock(ss);
if (rv <= 0) {
if (rv == SECWouldBlock) {
/* Progress is blocked waiting for callback completion. */
SSL_TRC(10, ("%d: SSL[%d]: handshake blocked (need %d)",
SSL_GETPID(), ss->fd, ss->gs.remainder));
return SECWouldBlock;
}
if (rv == 0) {
/* EOF. Loser */
PORT_SetError(PR_END_OF_FILE_ERROR);
}
return SECFailure; /* rv is < 0 here. */
}
ss->handshake = NULL;
return SECSuccess;
}
/* Acquires and releases HandshakeLock.
*/
SECStatus
SSL_ResetHandshake(PRFileDesc *s, PRBool asServer)
{
sslSocket *ss;
SECStatus status;
PRNetAddr addr;
ss = ssl_FindSocket(s);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in ResetHandshake", SSL_GETPID(), s));
return SECFailure;
}
/* Don't waste my time */
if (!ss->opt.useSecurity)
return SECSuccess;
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
/* Reset handshake state */
ssl_Get1stHandshakeLock(ss);
ss->firstHsDone = PR_FALSE;
if ( asServer ) {
ss->handshake = ssl2_BeginServerHandshake;
ss->handshaking = sslHandshakingAsServer;
} else {
ss->handshake = ssl2_BeginClientHandshake;
ss->handshaking = sslHandshakingAsClient;
}
ss->nextHandshake = 0;
ss->securityHandshake = 0;
ssl_GetRecvBufLock(ss);
status = ssl_InitGather(&ss->gs);
ssl_ReleaseRecvBufLock(ss);
ssl_GetSSL3HandshakeLock(ss);
/*
** Blow away old security state and get a fresh setup.
*/
ssl_GetXmitBufLock(ss);
ssl_ResetSecurityInfo(&ss->sec, PR_TRUE);
status = ssl_CreateSecurityInfo(ss);
ssl_ReleaseXmitBufLock(ss);
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_Release1stHandshakeLock(ss);
if (!ss->TCPconnected)
ss->TCPconnected = (PR_SUCCESS == ssl_DefGetpeername(ss, &addr));
SSL_UNLOCK_WRITER(ss);
SSL_UNLOCK_READER(ss);
return status;
}
/* Returns a SECStatus: SECSuccess or SECFailure, NOT SECWouldBlock.
*
* Currently, the list of functions called through ss->handshake is:
*
* In sslsocks.c:
* SocksGatherRecord
* SocksHandleReply
* SocksStartGather
*
* In sslcon.c:
* ssl_GatherRecord1stHandshake
* ssl2_HandleClientSessionKeyMessage
* ssl2_HandleMessage
* ssl2_HandleVerifyMessage
* ssl2_BeginClientHandshake
* ssl2_BeginServerHandshake
* ssl2_HandleClientHelloMessage
* ssl2_HandleServerHelloMessage
*
* The ss->handshake function returns SECWouldBlock under these conditions:
* 1. ssl_GatherRecord1stHandshake called ssl2_GatherData which read in
* the beginning of an SSL v3 hello message and returned SECWouldBlock
* to switch to SSL v3 handshake processing.
*
* 2. ssl2_HandleClientHelloMessage discovered version 3.0 in the incoming
* v2 client hello msg, and called ssl3_HandleV2ClientHello which
* returned SECWouldBlock.
*
* 3. SECWouldBlock was returned by one of the callback functions, via
* one of these paths:
* - ssl2_HandleMessage() -> ssl2_HandleRequestCertificate() ->
* ss->getClientAuthData()
*
* - ssl2_HandleServerHelloMessage() -> ss->handleBadCert()
*
* - ssl_GatherRecord1stHandshake() -> ssl3_GatherCompleteHandshake() ->
* ssl3_HandleRecord() -> ssl3_HandleHandshake() ->
* ssl3_HandleHandshakeMessage() -> ssl3_HandleCertificate() ->
* ss->handleBadCert()
*
* - ssl_GatherRecord1stHandshake() -> ssl3_GatherCompleteHandshake() ->
* ssl3_HandleRecord() -> ssl3_HandleHandshake() ->
* ssl3_HandleHandshakeMessage() -> ssl3_HandleCertificateRequest() ->
* ss->getClientAuthData()
*
* Called from: SSL_ForceHandshake (below),
* ssl_SecureRecv (below) and
* ssl_SecureSend (below)
* from: WaitForResponse in sslsocks.c
* ssl_SocksRecv in sslsocks.c
* ssl_SocksSend in sslsocks.c
*
* Caller must hold the (write) handshakeLock.
*/
int
ssl_Do1stHandshake(sslSocket *ss)
{
int rv = SECSuccess;
int loopCount = 0;
do {
PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss) );
PORT_Assert(ss->opt.noLocks || !ssl_HaveRecvBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveXmitBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveSSL3HandshakeLock(ss));
if (ss->handshake == 0) {
/* Previous handshake finished. Switch to next one */
ss->handshake = ss->nextHandshake;
ss->nextHandshake = 0;
}
if (ss->handshake == 0) {
/* Previous handshake finished. Switch to security handshake */
ss->handshake = ss->securityHandshake;
ss->securityHandshake = 0;
}
if (ss->handshake == 0) {
ssl_GetRecvBufLock(ss);
ss->gs.recordLen = 0;
ssl_ReleaseRecvBufLock(ss);
SSL_TRC(3, ("%d: SSL[%d]: handshake is completed",
SSL_GETPID(), ss->fd));
/* call handshake callback for ssl v2 */
/* for v3 this is done in ssl3_HandleFinished() */
if ((ss->handshakeCallback != NULL) && /* has callback */
(!ss->firstHsDone) && /* only first time */
(ss->version < SSL_LIBRARY_VERSION_3_0)) { /* not ssl3 */
ss->firstHsDone = PR_TRUE;
(ss->handshakeCallback)(ss->fd, ss->handshakeCallbackData);
}
ss->firstHsDone = PR_TRUE;
ss->gs.writeOffset = 0;
ss->gs.readOffset = 0;
break;
}
rv = (*ss->handshake)(ss);
++loopCount;
/* This code must continue to loop on SECWouldBlock,
* or any positive value. See XXX_1 comments.
*/
} while (rv != SECFailure); /* was (rv >= 0); XXX_1 */
PORT_Assert(ss->opt.noLocks || !ssl_HaveRecvBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveXmitBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveSSL3HandshakeLock(ss));
if (rv == SECWouldBlock) {
PORT_SetError(PR_WOULD_BLOCK_ERROR);
rv = SECFailure;
}
return rv;
}
/* Try to make progress on an SSL handshake by attempting to read the
** next handshake from the peer, and sending any responses.
** For non-blocking sockets, returns PR_ERROR_WOULD_BLOCK if it cannot
** read the next handshake from the underlying socket.
** For SSLv2, returns when handshake is complete or fatal error occurs.
** For SSLv3, returns when handshake is complete, or application data has
** arrived that must be taken by application before handshake can continue,
** or a fatal error occurs.
** Application should use handshake completion callback to tell which.
*/
SECStatus
SSL_ForceHandshake(PRFileDesc *fd)
{
sslSocket *ss;
SECStatus rv = SECFailure;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in ForceHandshake",
SSL_GETPID(), fd));
return rv;
}
/* Don't waste my time */
if (!ss->opt.useSecurity)
return SECSuccess;
if (!ssl_SocketIsBlocking(ss)) {
ssl_GetXmitBufLock(ss);
if (ss->pendingBuf.len != 0) {
int sent = ssl_SendSavedWriteData(ss);
if ((sent < 0) && (PORT_GetError() != PR_WOULD_BLOCK_ERROR)) {
ssl_ReleaseXmitBufLock(ss);
return SECFailure;
}
}
ssl_ReleaseXmitBufLock(ss);
}
ssl_Get1stHandshakeLock(ss);
if (ss->version >= SSL_LIBRARY_VERSION_3_0) {
int gatherResult;
ssl_GetRecvBufLock(ss);
gatherResult = ssl3_GatherCompleteHandshake(ss, 0);
ssl_ReleaseRecvBufLock(ss);
if (gatherResult > 0) {
rv = SECSuccess;
} else if (gatherResult == 0) {
PORT_SetError(PR_END_OF_FILE_ERROR);
} else if (gatherResult == SECWouldBlock) {
PORT_SetError(PR_WOULD_BLOCK_ERROR);
}
} else if (!ss->firstHsDone) {
rv = ssl_Do1stHandshake(ss);
} else {
/* tried to force handshake on an SSL 2 socket that has
** already completed the handshake. */
rv = SECSuccess; /* just pretend we did it. */
}
ssl_Release1stHandshakeLock(ss);
return rv;
}
/* Returns a SECStatus: SECSuccess or SECFailure, NOT SECWouldBlock.
*
* Currently, the list of functions called through ss->handshake is:
*
* In sslsocks.c:
* SocksGatherRecord
* SocksHandleReply
* SocksStartGather
*
* In sslcon.c:
* ssl_GatherRecord1stHandshake
* ssl2_HandleClientSessionKeyMessage
* ssl2_HandleMessage
* ssl2_HandleVerifyMessage
* ssl2_BeginClientHandshake
* ssl2_BeginServerHandshake
* ssl2_HandleClientHelloMessage
* ssl2_HandleServerHelloMessage
*
* The ss->handshake function returns SECWouldBlock under these conditions:
* 1. ssl_GatherRecord1stHandshake called ssl2_GatherData which read in
* the beginning of an SSL v3 hello message and returned SECWouldBlock
* to switch to SSL v3 handshake processing.
*
* 2. ssl2_HandleClientHelloMessage discovered version 3.0 in the incoming
* v2 client hello msg, and called ssl3_HandleV2ClientHello which
* returned SECWouldBlock.
*
* 3. SECWouldBlock was returned by one of the callback functions, via
* one of these paths:
* - ssl2_HandleMessage() -> ssl2_HandleRequestCertificate() ->
* ss->getClientAuthData()
*
* - ssl2_HandleServerHelloMessage() -> ss->handleBadCert()
*
* - ssl_GatherRecord1stHandshake() -> ssl3_GatherCompleteHandshake() ->
* ssl3_HandleRecord() -> ssl3_HandleHandshake() ->
* ssl3_HandleHandshakeMessage() -> ssl3_HandleCertificate() ->
* ss->handleBadCert()
*
* - ssl_GatherRecord1stHandshake() -> ssl3_GatherCompleteHandshake() ->
* ssl3_HandleRecord() -> ssl3_HandleHandshake() ->
* ssl3_HandleHandshakeMessage() -> ssl3_HandleCertificateRequest() ->
* ss->getClientAuthData()
*
* Called from: SSL_ForceHandshake (below),
* ssl_SecureRecv (below) and
* ssl_SecureSend (below)
* from: WaitForResponse in sslsocks.c
* ssl_SocksRecv in sslsocks.c
* ssl_SocksSend in sslsocks.c
*
* Caller must hold the (write) handshakeLock.
*/
int
ssl_Do1stHandshake(sslSocket *ss)
{
int rv = SECSuccess;
int loopCount = 0;
do {
PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss) );
PORT_Assert(ss->opt.noLocks || !ssl_HaveRecvBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveXmitBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveSSL3HandshakeLock(ss));
if (ss->handshake == 0) {
/* Previous handshake finished. Switch to next one */
ss->handshake = ss->nextHandshake;
ss->nextHandshake = 0;
}
if (ss->handshake == 0) {
/* Previous handshake finished. Switch to security handshake */
ss->handshake = ss->securityHandshake;
ss->securityHandshake = 0;
}
if (ss->handshake == 0) {
/* for v3 this is done in ssl3_FinishHandshake */
if (!ss->firstHsDone && ss->version < SSL_LIBRARY_VERSION_3_0) {
ssl_GetRecvBufLock(ss);
ss->gs.recordLen = 0;
ssl_FinishHandshake(ss);
ssl_ReleaseRecvBufLock(ss);
}
break;
}
rv = (*ss->handshake)(ss);
++loopCount;
/* This code must continue to loop on SECWouldBlock,
* or any positive value. See XXX_1 comments.
*/
} while (rv != SECFailure); /* was (rv >= 0); XXX_1 */
PORT_Assert(ss->opt.noLocks || !ssl_HaveRecvBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveXmitBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveSSL3HandshakeLock(ss));
if (rv == SECWouldBlock) {
PORT_SetError(PR_WOULD_BLOCK_ERROR);
rv = SECFailure;
}
return rv;
}
/*
** Returns Negative number on error, zero or greater on success.
** Returns the amount of data immediately available to be read.
*/
int
SSL_DataPending(PRFileDesc *fd)
{
sslSocket *ss;
int rv = 0;
ss = ssl_FindSocket(fd);
if (ss && ss->opt.useSecurity) {
ssl_GetRecvBufLock(ss);
rv = ss->gs.writeOffset - ss->gs.readOffset;
ssl_ReleaseRecvBufLock(ss);
}
return rv;
}
int
ssl_Do1stHandshake(sslSocket *ss)
{
int rv = SECSuccess;
int loopCount = 0;
do {
PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss) );
PORT_Assert(ss->opt.noLocks || !ssl_HaveRecvBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveXmitBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveSSL3HandshakeLock(ss));
if (ss->handshake == 0) {
ss->handshake = ss->nextHandshake;
ss->nextHandshake = 0;
}
if (ss->handshake == 0) {
ss->handshake = ss->securityHandshake;
ss->securityHandshake = 0;
}
if (ss->handshake == 0) {
if (!ss->firstHsDone && ss->version < SSL_LIBRARY_VERSION_3_0) {
ssl_GetRecvBufLock(ss);
ss->gs.recordLen = 0;
ssl_FinishHandshake(ss);
ssl_ReleaseRecvBufLock(ss);
}
break;
}
rv = (*ss->handshake)(ss);
++loopCount;
} while (rv != SECFailure);
PORT_Assert(ss->opt.noLocks || !ssl_HaveRecvBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveXmitBufLock(ss));
PORT_Assert(ss->opt.noLocks || !ssl_HaveSSL3HandshakeLock(ss));
if (rv == SECWouldBlock) {
PORT_SetError(PR_WOULD_BLOCK_ERROR);
rv = SECFailure;
}
return rv;
}
/*
** Receive some application data on a socket. Reads SSL records from the input
** stream, decrypts them and then copies them to the output buffer.
** Called from ssl_SecureRecv() below.
**
** Caller does NOT hold 1stHandshakeLock because that handshake is over.
** Caller doesn't call this until initial handshake is complete.
** For SSLv2, there is no subsequent handshake.
** For SSLv3, the call to ssl3_GatherAppDataRecord may encounter handshake
** messages from a subsequent handshake.
**
** This code is similar to, and easily confused with,
** ssl_GatherRecord1stHandshake() in sslcon.c
*/
static int
DoRecv(sslSocket *ss, unsigned char *out, int len, int flags)
{
int rv;
int amount;
int available;
/* ssl3_GatherAppDataRecord may call ssl_FinishHandshake, which needs the
* 1stHandshakeLock. */
ssl_Get1stHandshakeLock(ss);
ssl_GetRecvBufLock(ss);
available = ss->gs.writeOffset - ss->gs.readOffset;
if (available == 0) {
/* Get some more data */
if (ss->version >= SSL_LIBRARY_VERSION_3_0) {
/* Wait for application data to arrive. */
rv = ssl3_GatherAppDataRecord(ss, 0);
} else {
/* See if we have a complete record */
rv = ssl2_GatherRecord(ss, 0);
}
if (rv <= 0) {
if (rv == 0) {
/* EOF */
SSL_TRC(10, ("%d: SSL[%d]: ssl_recv EOF",
SSL_GETPID(), ss->fd));
goto done;
}
if ((rv != SECWouldBlock) &&
(PR_GetError() != PR_WOULD_BLOCK_ERROR)) {
/* Some random error */
goto done;
}
/*
** Gather record is blocked waiting for more record data to
** arrive. Try to process what we have already received
*/
} else {
/* Gather record has finished getting a complete record */
}
/* See if any clear data is now available */
available = ss->gs.writeOffset - ss->gs.readOffset;
if (available == 0) {
/*
** No partial data is available. Force error code to
** EWOULDBLOCK so that caller will try again later. Note
** that the error code is probably EWOULDBLOCK already,
** but if it isn't (for example, if we received a zero
** length record) then this will force it to be correct.
*/
PORT_SetError(PR_WOULD_BLOCK_ERROR);
rv = SECFailure;
goto done;
}
SSL_TRC(30, ("%d: SSL[%d]: partial data ready, available=%d",
SSL_GETPID(), ss->fd, available));
}
/* Dole out clear data to reader */
amount = PR_MIN(len, available);
PORT_Memcpy(out, ss->gs.buf.buf + ss->gs.readOffset, amount);
if (!(flags & PR_MSG_PEEK)) {
ss->gs.readOffset += amount;
}
PORT_Assert(ss->gs.readOffset <= ss->gs.writeOffset);
rv = amount;
SSL_TRC(30, ("%d: SSL[%d]: amount=%d available=%d",
SSL_GETPID(), ss->fd, amount, available));
PRINT_BUF(4, (ss, "DoRecv receiving plaintext:", out, amount));
done:
ssl_ReleaseRecvBufLock(ss);
ssl_Release1stHandshakeLock(ss);
return rv;
}
static int
DoRecv(sslSocket *ss, unsigned char *out, int len, int flags)
{
int rv;
int amount;
int available;
ssl_Get1stHandshakeLock(ss);
ssl_GetRecvBufLock(ss);
available = ss->gs.writeOffset - ss->gs.readOffset;
if (available == 0) {
if (ss->version >= SSL_LIBRARY_VERSION_3_0) {
rv = ssl3_GatherAppDataRecord(ss, 0);
} else {
rv = ssl2_GatherRecord(ss, 0);
}
if (rv <= 0) {
if (rv == 0) {
SSL_TRC(10, ("%d: SSL[%d]: ssl_recv EOF",
SSL_GETPID(), ss->fd));
goto done;
}
if ((rv != SECWouldBlock) &&
(PR_GetError() != PR_WOULD_BLOCK_ERROR)) {
goto done;
}
} else {
}
available = ss->gs.writeOffset - ss->gs.readOffset;
if (available == 0) {
PORT_SetError(PR_WOULD_BLOCK_ERROR);
rv = SECFailure;
goto done;
}
SSL_TRC(30, ("%d: SSL[%d]: partial data ready, available=%d",
SSL_GETPID(), ss->fd, available));
}
amount = PR_MIN(len, available);
PORT_Memcpy(out, ss->gs.buf.buf + ss->gs.readOffset, amount);
if (!(flags & PR_MSG_PEEK)) {
ss->gs.readOffset += amount;
}
PORT_Assert(ss->gs.readOffset <= ss->gs.writeOffset);
rv = amount;
SSL_TRC(30, ("%d: SSL[%d]: amount=%d available=%d",
SSL_GETPID(), ss->fd, amount, available));
PRINT_BUF(4, (ss, "DoRecv receiving plaintext:", out, amount));
done:
ssl_ReleaseRecvBufLock(ss);
ssl_Release1stHandshakeLock(ss);
return rv;
}
SECStatus
SSL_ExportKeyingMaterial(PRFileDesc *fd,
const char *label, unsigned int labelLen,
PRBool hasContext,
const unsigned char *context, unsigned int contextLen,
unsigned char *out, unsigned int outLen)
{
sslSocket *ss;
unsigned char *val = NULL;
unsigned int valLen, i;
SECStatus rv = SECFailure;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in ExportKeyingMaterial",
SSL_GETPID(), fd));
return SECFailure;
}
ssl_GetRecvBufLock(ss);
ssl_GetSSL3HandshakeLock(ss);
if (ss->version < SSL_LIBRARY_VERSION_3_1_TLS) {
PORT_SetError(SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_VERSION);
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_ReleaseRecvBufLock(ss);
return SECFailure;
}
/* construct PRF arguments */
valLen = SSL3_RANDOM_LENGTH * 2;
if (hasContext) {
valLen += 2 /* PRUint16 length */ + contextLen;
}
val = PORT_Alloc(valLen);
if (!val) {
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_ReleaseRecvBufLock(ss);
return SECFailure;
}
i = 0;
PORT_Memcpy(val + i, &ss->ssl3.hs.client_random.rand, SSL3_RANDOM_LENGTH);
i += SSL3_RANDOM_LENGTH;
PORT_Memcpy(val + i, &ss->ssl3.hs.server_random.rand, SSL3_RANDOM_LENGTH);
i += SSL3_RANDOM_LENGTH;
if (hasContext) {
val[i++] = contextLen >> 8;
val[i++] = contextLen;
PORT_Memcpy(val + i, context, contextLen);
i += contextLen;
}
PORT_Assert(i == valLen);
/* Allow TLS keying material to be exported sooner, when the master
* secret is available and we have sent ChangeCipherSpec.
*/
ssl_GetSpecReadLock(ss);
if (!ss->ssl3.cwSpec->master_secret && !ss->ssl3.cwSpec->msItem.len) {
PORT_SetError(SSL_ERROR_HANDSHAKE_NOT_COMPLETED);
rv = SECFailure;
} else {
rv = ssl3_TLSPRFWithMasterSecret(ss->ssl3.cwSpec, label, labelLen, val,
valLen, out, outLen);
}
ssl_ReleaseSpecReadLock(ss);
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_ReleaseRecvBufLock(ss);
PORT_ZFree(val, valLen);
return rv;
}