/* 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;
}
/* 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;
}
/* Gather in a record and when complete, Handle that record.
* Repeat this until the handshake is complete,
* or until application data is available.
*
* Returns 1 when the handshake is completed without error, or
* application data is available.
* Returns 0 if ssl3_GatherData hits EOF.
* Returns -1 on read error, or PR_WOULD_BLOCK_ERROR, or handleRecord error.
* Returns -2 on SECWouldBlock return from ssl3_HandleRecord.
*
* Called from ssl_GatherRecord1stHandshake in sslcon.c,
* and from SSL_ForceHandshake in sslsecur.c
* and from ssl3_GatherAppDataRecord below (<- DoRecv in sslsecur.c).
*
* Caller must hold the recv buf lock.
*/
int
ssl3_GatherCompleteHandshake(sslSocket *ss, int flags)
{
SSL3Ciphertext cText;
int rv;
PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
do {
/* bring in the next sslv3 record. */
rv = ssl3_GatherData(ss, &ss->gs, flags);
if (rv <= 0) {
return rv;
}
/* decipher it, and handle it if it's a handshake.
* If it's application data, ss->gs.buf will not be empty upon return.
*/
cText.type = (SSL3ContentType)ss->gs.hdr[0];
cText.version = (ss->gs.hdr[1] << 8) | ss->gs.hdr[2];
cText.buf = &ss->gs.inbuf;
rv = ssl3_HandleRecord(ss, &cText, &ss->gs.buf);
if (rv < 0) {
return ss->recvdCloseNotify ? 0 : rv;
}
} while (ss->ssl3.hs.ws != idle_handshake && ss->gs.buf.len == 0);
ss->gs.readOffset = 0;
ss->gs.writeOffset = ss->gs.buf.len;
return 1;
}
/*
** Called from ssl3_HandleClientKeyExchange()
*/
SECStatus
ssl3_HandleECDHClientKeyExchange(sslSocket *ss, SSL3Opaque *b,
PRUint32 length,
SECKEYPublicKey *srvrPubKey,
SECKEYPrivateKey *srvrPrivKey)
{
PK11SymKey * pms;
SECStatus rv;
SECKEYPublicKey clntPubKey;
CK_MECHANISM_TYPE target;
PRBool isTLS, isTLS12;
PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
PORT_Assert( ss->opt.noLocks || ssl_HaveSSL3HandshakeLock(ss) );
clntPubKey.keyType = ecKey;
clntPubKey.u.ec.DEREncodedParams.len =
srvrPubKey->u.ec.DEREncodedParams.len;
clntPubKey.u.ec.DEREncodedParams.data =
srvrPubKey->u.ec.DEREncodedParams.data;
rv = ssl3_ConsumeHandshakeVariable(ss, &clntPubKey.u.ec.publicValue,
1, &b, &length);
if (rv != SECSuccess) {
SEND_ALERT
return SECFailure; /* XXX Who sets the error code?? */
}
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;
}
/* Repeatedly gather in a record and when complete, Handle that record.
* Repeat this until some application data is received.
*
* Returns 1 when application data is available.
* Returns 0 if ssl3_GatherData hits EOF.
* Returns -1 on read error, or PR_WOULD_BLOCK_ERROR, or handleRecord error.
* Returns -2 on SECWouldBlock return from ssl3_HandleRecord.
*
* Called from DoRecv in sslsecur.c
* Caller must hold the recv buf lock.
*/
int
ssl3_GatherAppDataRecord(sslSocket *ss, int flags)
{
int rv;
PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
do {
rv = ssl3_GatherCompleteHandshake(ss, flags);
} while (rv > 0 && ss->gs.buf.len == 0);
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
* ssl_BeginClientHandshake
* ssl_BeginServerHandshake
*
* The ss->handshake function returns SECWouldBlock if it was returned by
* one of the callback functions, via one of these paths:
*
* - 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;
while (ss->handshake && rv == SECSuccess) {
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));
rv = (*ss->handshake)(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 (rv == SECWouldBlock) {
PORT_SetError(PR_WOULD_BLOCK_ERROR);
rv = SECFailure;
}
return rv;
}
/*
** Take an encoded key share and make a public key out of it.
*/
SECStatus
ssl_ImportECDHKeyShare(sslSocket *ss, SECKEYPublicKey *peerKey,
SSL3Opaque *b, PRUint32 length,
const sslNamedGroupDef *ecGroup)
{
SECStatus rv;
SECItem ecPoint = { siBuffer, NULL, 0 };
PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
PORT_Assert(ss->opt.noLocks || ssl_HaveSSL3HandshakeLock(ss));
if (!length) {
PORT_SetError(SSL_ERROR_RX_MALFORMED_ECDHE_KEY_SHARE);
return SECFailure;
}
/* Fail if the ec point uses compressed representation */
if (b[0] != EC_POINT_FORM_UNCOMPRESSED &&
ecGroup->name != ssl_grp_ec_curve25519) {
PORT_SetError(SEC_ERROR_UNSUPPORTED_EC_POINT_FORM);
return SECFailure;
}
peerKey->keyType = ecKey;
/* Set up the encoded params */
rv = ssl_NamedGroup2ECParams(peerKey->arena, ecGroup,
&peerKey->u.ec.DEREncodedParams);
if (rv != SECSuccess) {
ssl_MapLowLevelError(SSL_ERROR_RX_MALFORMED_ECDHE_KEY_SHARE);
return SECFailure;
}
if (ecGroup->name == ssl_grp_ec_curve25519) {
peerKey->u.ec.encoding = ECPoint_XOnly;
} else {
peerKey->u.ec.encoding = ECPoint_Uncompressed;
}
/* copy publicValue in peerKey */
ecPoint.data = b;
ecPoint.len = length;
rv = SECITEM_CopyItem(peerKey->arena, &peerKey->u.ec.publicValue, &ecPoint);
if (rv != SECSuccess) {
return SECFailure;
}
return SECSuccess;
}
void
ssl_FinishHandshake(sslSocket *ss)
{
PORT_Assert( ss->opt.noLocks || ssl_Have1stHandshakeLock(ss) );
PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
SSL_TRC(3, ("%d: SSL[%d]: handshake is completed", SSL_GETPID(), ss->fd));
ss->firstHsDone = PR_TRUE;
ss->enoughFirstHsDone = PR_TRUE;
ss->gs.writeOffset = 0;
ss->gs.readOffset = 0;
if (ss->handshakeCallback) {
(ss->handshakeCallback)(ss->fd, ss->handshakeCallbackData);
}
}
void
ssl_FinishHandshake(sslSocket *ss)
{
PORT_Assert( ss->opt.noLocks || ssl_Have1stHandshakeLock(ss) );
PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
SSL_TRC(3, ("%d: SSL[%d]: handshake is completed", SSL_GETPID(), ss->fd));
ss->firstHsDone = PR_TRUE;
ss->enoughFirstHsDone = PR_TRUE;
ss->gs.writeOffset = 0;
ss->gs.readOffset = 0;
if (ss->handshakeCallback) {
PORT_Assert(ss->version < SSL_LIBRARY_VERSION_3_0 ||
(ss->ssl3.hs.preliminaryInfo & ssl_preinfo_all) ==
ssl_preinfo_all);
(ss->handshakeCallback)(ss->fd, ss->handshakeCallbackData);
}
}
/* Gather in a record and when complete, Handle that record.
* Repeat this until the handshake is complete,
* or until application data is available.
*
* Returns 1 when the handshake is completed without error, or
* application data is available.
* Returns 0 if ssl3_GatherData hits EOF.
* Returns -1 on read error, or PR_WOULD_BLOCK_ERROR, or handleRecord error.
* Returns -2 on SECWouldBlock return from ssl3_HandleRecord.
*
* Called from ssl_GatherRecord1stHandshake in sslcon.c,
* and from SSL_ForceHandshake in sslsecur.c
* and from ssl3_GatherAppDataRecord below (<- DoRecv in sslsecur.c).
*
* Caller must hold the recv buf lock.
*/
int
ssl3_GatherCompleteHandshake(sslSocket *ss, int flags)
{
SSL3Ciphertext cText;
int rv;
PRBool canFalseStart = PR_FALSE;
PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
do {
/* Without this, we may end up wrongly reporting
* SSL_ERROR_RX_UNEXPECTED_* errors if we receive any records from the
* peer while we are waiting to be restarted.
*/
ssl_GetSSL3HandshakeLock(ss);
rv = ss->ssl3.hs.restartTarget == NULL ? SECSuccess : SECFailure;
ssl_ReleaseSSL3HandshakeLock(ss);
if (rv != SECSuccess) {
PORT_SetError(PR_WOULD_BLOCK_ERROR);
return (int) SECFailure;
}
/* Treat an empty msgState like a NULL msgState. (Most of the time
* when ssl3_HandleHandshake returns SECWouldBlock, it leaves
* behind a non-NULL but zero-length msgState).
* Test: async_cert_restart_server_sends_hello_request_first_in_separate_record
*/
if (ss->ssl3.hs.msgState.buf != NULL) {
if (ss->ssl3.hs.msgState.len == 0) {
ss->ssl3.hs.msgState.buf = NULL;
}
}
if (ss->ssl3.hs.msgState.buf != NULL) {
/* ssl3_HandleHandshake previously returned SECWouldBlock and the
* as-yet-unprocessed plaintext of that previous handshake record.
* We need to process it now before we overwrite it with the next
* handshake record.
*/
rv = ssl3_HandleRecord(ss, NULL, &ss->gs.buf);
} else {
/* bring in the next sslv3 record. */
rv = ssl3_GatherData(ss, &ss->gs, flags);
if (rv <= 0) {
return rv;
}
/* decipher it, and handle it if it's a handshake.
* If it's application data, ss->gs.buf will not be empty upon return.
* If it's a change cipher spec, alert, or handshake message,
* ss->gs.buf.len will be 0 when ssl3_HandleRecord returns SECSuccess.
*/
cText.type = (SSL3ContentType)ss->gs.hdr[0];
cText.version = (ss->gs.hdr[1] << 8) | ss->gs.hdr[2];
cText.buf = &ss->gs.inbuf;
rv = ssl3_HandleRecord(ss, &cText, &ss->gs.buf);
}
if (rv < 0) {
return ss->recvdCloseNotify ? 0 : rv;
}
/* If we kicked off a false start in ssl3_HandleServerHelloDone, break
* out of this loop early without finishing the handshake.
*/
if (ss->opt.enableFalseStart) {
ssl_GetSSL3HandshakeLock(ss);
canFalseStart = (ss->ssl3.hs.ws == wait_change_cipher ||
ss->ssl3.hs.ws == wait_new_session_ticket) &&
ssl3_CanFalseStart(ss);
ssl_ReleaseSSL3HandshakeLock(ss);
}
} while (ss->ssl3.hs.ws != idle_handshake &&
!canFalseStart &&
ss->gs.buf.len == 0);
ss->gs.readOffset = 0;
ss->gs.writeOffset = ss->gs.buf.len;
return 1;
}
/*
** Called from ssl3_HandleClientKeyExchange()
*/
SECStatus
ssl3_HandleECDHClientKeyExchange(sslSocket *ss, SSL3Opaque *b,
PRUint32 length,
sslKeyPair *serverKeyPair)
{
PK11SymKey *pms;
SECStatus rv;
SECKEYPublicKey clntPubKey;
CK_MECHANISM_TYPE target;
PRBool isTLS, isTLS12;
int errCode = SSL_ERROR_RX_MALFORMED_CLIENT_KEY_EXCH;
PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
PORT_Assert(ss->opt.noLocks || ssl_HaveSSL3HandshakeLock(ss));
clntPubKey.keyType = ecKey;
clntPubKey.u.ec.DEREncodedParams.len =
serverKeyPair->pubKey->u.ec.DEREncodedParams.len;
clntPubKey.u.ec.DEREncodedParams.data =
serverKeyPair->pubKey->u.ec.DEREncodedParams.data;
rv = ssl3_ConsumeHandshakeVariable(ss, &clntPubKey.u.ec.publicValue,
1, &b, &length);
if (rv != SECSuccess) {
PORT_SetError(errCode);
return SECFailure;
}
/* we have to catch the case when the client's public key has length 0. */
if (!clntPubKey.u.ec.publicValue.len) {
(void)SSL3_SendAlert(ss, alert_fatal, illegal_parameter);
PORT_SetError(errCode);
return SECFailure;
}
isTLS = (PRBool)(ss->ssl3.prSpec->version > SSL_LIBRARY_VERSION_3_0);
isTLS12 = (PRBool)(ss->ssl3.prSpec->version >= SSL_LIBRARY_VERSION_TLS_1_2);
if (isTLS12) {
target = CKM_TLS12_MASTER_KEY_DERIVE_DH;
} else if (isTLS) {
target = CKM_TLS_MASTER_KEY_DERIVE_DH;
} else {
target = CKM_SSL3_MASTER_KEY_DERIVE_DH;
}
/* Determine the PMS */
pms = PK11_PubDeriveWithKDF(serverKeyPair->privKey, &clntPubKey,
PR_FALSE, NULL, NULL,
CKM_ECDH1_DERIVE, target, CKA_DERIVE, 0,
CKD_NULL, NULL, NULL);
if (pms == NULL) {
/* last gasp. */
errCode = ssl_MapLowLevelError(SSL_ERROR_CLIENT_KEY_EXCHANGE_FAILURE);
PORT_SetError(errCode);
return SECFailure;
}
rv = ssl3_InitPendingCipherSpec(ss, pms);
PK11_FreeSymKey(pms);
if (rv != SECSuccess) {
/* error code set by ssl3_InitPendingCipherSpec */
return SECFailure;
}
return SECSuccess;
}
/*
* Attempt to read in an entire SSL3 record.
* Blocks here for blocking sockets, otherwise returns -1 with
* PR_WOULD_BLOCK_ERROR when socket would block.
*
* returns 1 if received a complete SSL3 record.
* returns 0 if recv returns EOF
* returns -1 if recv returns < 0
* (The error value may have already been set to PR_WOULD_BLOCK_ERROR)
*
* Caller must hold the recv buf lock.
*
* The Gather state machine has 3 states: GS_INIT, GS_HEADER, GS_DATA.
* GS_HEADER: waiting for the 5-byte SSL3 record header to come in.
* GS_DATA: waiting for the body of the SSL3 record to come in.
*
* This loop returns when either
* (a) an error or EOF occurs,
* (b) PR_WOULD_BLOCK_ERROR,
* (c) data (entire SSL3 record) has been received.
*/
static int
ssl3_GatherData(sslSocket *ss, sslGather *gs, int flags)
{
unsigned char *bp;
unsigned char *lbp;
int nb;
int err;
int rv = 1;
PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
if (gs->state == GS_INIT) {
gs->state = GS_HEADER;
gs->remainder = 5;
gs->offset = 0;
gs->writeOffset = 0;
gs->readOffset = 0;
gs->inbuf.len = 0;
}
lbp = gs->inbuf.buf;
for (;;) {
SSL_TRC(30, ("%d: SSL3[%d]: gather state %d (need %d more)",
SSL_GETPID(), ss->fd, gs->state, gs->remainder));
bp = ((gs->state != GS_HEADER) ? lbp : gs->hdr) + gs->offset;
nb = ssl_DefRecv(ss, bp, gs->remainder, flags);
if (nb > 0) {
PRINT_BUF(60, (ss, "raw gather data:", bp, nb));
} else if (nb == 0) {
/* EOF */
SSL_TRC(30, ("%d: SSL3[%d]: EOF", SSL_GETPID(), ss->fd));
rv = 0;
break;
} else /* if (nb < 0) */ {
SSL_DBG(("%d: SSL3[%d]: recv error %d", SSL_GETPID(), ss->fd,
PR_GetError()));
rv = SECFailure;
break;
}
PORT_Assert((unsigned int)nb <= gs->remainder);
if ((unsigned int)nb > gs->remainder) {
/* ssl_DefRecv is misbehaving! this error is fatal to SSL. */
gs->state = GS_INIT; /* so we don't crash next time */
rv = SECFailure;
break;
}
gs->offset += nb;
gs->remainder -= nb;
if (gs->state == GS_DATA)
gs->inbuf.len += nb;
/* if there's more to go, read some more. */
if (gs->remainder > 0) {
continue;
}
/* have received entire record header, or entire record. */
switch (gs->state) {
case GS_HEADER:
/*
** Have received SSL3 record header in gs->hdr.
** Now extract the length of the following encrypted data,
** and then read in the rest of the SSL3 record into gs->inbuf.
*/
gs->remainder = (gs->hdr[3] << 8) | gs->hdr[4];
/* This is the max fragment length for an encrypted fragment
** plus the size of the record header.
*/
if (gs->remainder > (MAX_FRAGMENT_LENGTH + 2048 + 5)) {
SSL3_SendAlert(ss, alert_fatal, unexpected_message);
gs->state = GS_INIT;
PORT_SetError(SSL_ERROR_RX_RECORD_TOO_LONG);
return SECFailure;
}
gs->state = GS_DATA;
gs->offset = 0;
gs->inbuf.len = 0;
if (gs->remainder > gs->inbuf.space) {
err = sslBuffer_Grow(&gs->inbuf, gs->remainder);
if (err) { /* realloc has set error code to no mem. */
return err;
}
lbp = gs->inbuf.buf;
}
break; /* End this case. Continue around the loop. */
case GS_DATA:
/*
** SSL3 record has been completely received.
*/
gs->state = GS_INIT;
return 1;
}
}
return rv;
}
/* Gather in a record and when complete, Handle that record.
* Repeat this until the handshake is complete,
* or until application data is available.
*
* Returns 1 when the handshake is completed without error, or
* application data is available.
* Returns 0 if ssl3_GatherData hits EOF.
* Returns -1 on read error, or PR_WOULD_BLOCK_ERROR, or handleRecord error.
* Returns -2 on SECWouldBlock return from ssl3_HandleRecord.
*
* Called from ssl_GatherRecord1stHandshake in sslcon.c,
* and from SSL_ForceHandshake in sslsecur.c
* and from ssl3_GatherAppDataRecord below (<- DoRecv in sslsecur.c).
*
* Caller must hold the recv buf lock.
*/
int
ssl3_GatherCompleteHandshake(sslSocket *ss, int flags)
{
SSL3Ciphertext cText;
int rv;
PRBool keepGoing = PR_TRUE;
SSL_TRC(30, ("ssl3_GatherCompleteHandshake"));
/* ssl3_HandleRecord may end up eventually calling ssl_FinishHandshake,
* which requires the 1stHandshakeLock, which must be acquired before the
* RecvBufLock.
*/
PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
do {
PRBool handleRecordNow = PR_FALSE;
ssl_GetSSL3HandshakeLock(ss);
/* Without this, we may end up wrongly reporting
* SSL_ERROR_RX_UNEXPECTED_* errors if we receive any records from the
* peer while we are waiting to be restarted.
*/
if (ss->ssl3.hs.restartTarget) {
ssl_ReleaseSSL3HandshakeLock(ss);
PORT_SetError(PR_WOULD_BLOCK_ERROR);
return (int)SECFailure;
}
/* Treat an empty msgState like a NULL msgState. (Most of the time
* when ssl3_HandleHandshake returns SECWouldBlock, it leaves
* behind a non-NULL but zero-length msgState).
* Test: async_cert_restart_server_sends_hello_request_first_in_separate_record
*/
if (ss->ssl3.hs.msgState.buf) {
if (ss->ssl3.hs.msgState.len == 0) {
ss->ssl3.hs.msgState.buf = NULL;
} else {
handleRecordNow = PR_TRUE;
}
}
ssl_ReleaseSSL3HandshakeLock(ss);
if (handleRecordNow) {
/* ssl3_HandleHandshake previously returned SECWouldBlock and the
* as-yet-unprocessed plaintext of that previous handshake record.
* We need to process it now before we overwrite it with the next
* handshake record.
*/
rv = ssl3_HandleRecord(ss, NULL, &ss->gs.buf);
} else {
/* bring in the next sslv3 record. */
if (ss->recvdCloseNotify) {
/* RFC 5246 Section 7.2.1:
* Any data received after a closure alert is ignored.
*/
return 0;
}
if (!IS_DTLS(ss)) {
rv = ssl3_GatherData(ss, &ss->gs, flags);
} else {
rv = dtls_GatherData(ss, &ss->gs, flags);
/* If we got a would block error, that means that no data was
* available, so we check the timer to see if it's time to
* retransmit */
if (rv == SECFailure &&
(PORT_GetError() == PR_WOULD_BLOCK_ERROR)) {
ssl_GetSSL3HandshakeLock(ss);
dtls_CheckTimer(ss);
ssl_ReleaseSSL3HandshakeLock(ss);
/* Restore the error in case something succeeded */
PORT_SetError(PR_WOULD_BLOCK_ERROR);
}
}
if (rv <= 0) {
return rv;
}
/* decipher it, and handle it if it's a handshake.
* If it's application data, ss->gs.buf will not be empty upon return.
* If it's a change cipher spec, alert, or handshake message,
* ss->gs.buf.len will be 0 when ssl3_HandleRecord returns SECSuccess.
*/
cText.type = (SSL3ContentType)ss->gs.hdr[0];
cText.version = (ss->gs.hdr[1] << 8) | ss->gs.hdr[2];
if (IS_DTLS(ss)) {
int i;
cText.version = dtls_DTLSVersionToTLSVersion(cText.version);
/* DTLS sequence number */
cText.seq_num.high = 0;
cText.seq_num.low = 0;
for (i = 0; i < 4; i++) {
cText.seq_num.high <<= 8;
cText.seq_num.low <<= 8;
cText.seq_num.high |= ss->gs.hdr[3 + i];
cText.seq_num.low |= ss->gs.hdr[7 + i];
}
}
cText.buf = &ss->gs.inbuf;
rv = ssl3_HandleRecord(ss, &cText, &ss->gs.buf);
}
if (rv < 0) {
return ss->recvdCloseNotify ? 0 : rv;
}
if (ss->gs.buf.len > 0) {
/* We have application data to return to the application. This
* prioritizes returning application data to the application over
* completing any renegotiation handshake we may be doing.
*/
PORT_Assert(ss->firstHsDone);
PORT_Assert(cText.type == content_application_data);
break;
}
PORT_Assert(keepGoing);
ssl_GetSSL3HandshakeLock(ss);
if (ss->ssl3.hs.ws == idle_handshake) {
/* We are done with the current handshake so stop trying to
* handshake. Note that it would be safe to test ss->firstHsDone
* instead of ss->ssl3.hs.ws. By testing ss->ssl3.hs.ws instead,
* we prioritize completing a renegotiation handshake over sending
* application data.
*/
PORT_Assert(ss->firstHsDone);
PORT_Assert(!ss->ssl3.hs.canFalseStart);
keepGoing = PR_FALSE;
} else if (ss->ssl3.hs.canFalseStart) {
/* Prioritize sending application data over trying to complete
* the handshake if we're false starting.
*
* If we were to do this check at the beginning of the loop instead
* of here, then this function would become be a no-op after
* receiving the ServerHelloDone in the false start case, and we
* would never complete the handshake.
*/
PORT_Assert(!ss->firstHsDone);
if (ssl3_WaitingForServerSecondRound(ss)) {
keepGoing = PR_FALSE;
} else {
ss->ssl3.hs.canFalseStart = PR_FALSE;
}
}
ssl_ReleaseSSL3HandshakeLock(ss);
} while (keepGoing);
ss->gs.readOffset = 0;
ss->gs.writeOffset = ss->gs.buf.len;
return 1;
}
/*
* Read in an entire DTLS record.
*
* Blocks here for blocking sockets, otherwise returns -1 with
* PR_WOULD_BLOCK_ERROR when socket would block.
*
* This is simpler than SSL because we are reading on a datagram socket
* and datagrams must contain >=1 complete records.
*
* returns 1 if received a complete DTLS record.
* returns 0 if recv returns EOF
* returns -1 if recv returns < 0
* (The error value may have already been set to PR_WOULD_BLOCK_ERROR)
*
* Caller must hold the recv buf lock.
*
* This loop returns when either
* (a) an error or EOF occurs,
* (b) PR_WOULD_BLOCK_ERROR,
* (c) data (entire DTLS record) has been received.
*/
static int
dtls_GatherData(sslSocket *ss, sslGather *gs, int flags)
{
int nb;
int err;
int rv = 1;
SSL_TRC(30, ("dtls_GatherData"));
PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
gs->state = GS_HEADER;
gs->offset = 0;
if (gs->dtlsPacketOffset == gs->dtlsPacket.len) { /* No data left */
gs->dtlsPacketOffset = 0;
gs->dtlsPacket.len = 0;
/* Resize to the maximum possible size so we can fit a full datagram */
/* This is the max fragment length for an encrypted fragment
** plus the size of the record header.
** This magic constant is copied from ssl3_GatherData, with 5 changed
** to 13 (the size of the record header).
*/
if (gs->dtlsPacket.space < MAX_FRAGMENT_LENGTH + 2048 + 13) {
err = sslBuffer_Grow(&gs->dtlsPacket,
MAX_FRAGMENT_LENGTH + 2048 + 13);
if (err) { /* realloc has set error code to no mem. */
return err;
}
}
/* recv() needs to read a full datagram at a time */
nb = ssl_DefRecv(ss, gs->dtlsPacket.buf, gs->dtlsPacket.space, flags);
if (nb > 0) {
PRINT_BUF(60, (ss, "raw gather data:", gs->dtlsPacket.buf, nb));
} else if (nb == 0) {
/* EOF */
SSL_TRC(30, ("%d: SSL3[%d]: EOF", SSL_GETPID(), ss->fd));
rv = 0;
return rv;
} else /* if (nb < 0) */ {
SSL_DBG(("%d: SSL3[%d]: recv error %d", SSL_GETPID(), ss->fd,
PR_GetError()));
rv = SECFailure;
return rv;
}
gs->dtlsPacket.len = nb;
}
/* At this point we should have >=1 complete records lined up in
* dtlsPacket. Read off the header.
*/
if ((gs->dtlsPacket.len - gs->dtlsPacketOffset) < 13) {
SSL_DBG(("%d: SSL3[%d]: rest of DTLS packet "
"too short to contain header",
SSL_GETPID(), ss->fd));
PR_SetError(PR_WOULD_BLOCK_ERROR, 0);
gs->dtlsPacketOffset = 0;
gs->dtlsPacket.len = 0;
rv = SECFailure;
return rv;
}
memcpy(gs->hdr, gs->dtlsPacket.buf + gs->dtlsPacketOffset, 13);
gs->dtlsPacketOffset += 13;
/* Have received SSL3 record header in gs->hdr. */
gs->remainder = (gs->hdr[11] << 8) | gs->hdr[12];
if ((gs->dtlsPacket.len - gs->dtlsPacketOffset) < gs->remainder) {
SSL_DBG(("%d: SSL3[%d]: rest of DTLS packet too short "
"to contain rest of body",
SSL_GETPID(), ss->fd));
PR_SetError(PR_WOULD_BLOCK_ERROR, 0);
gs->dtlsPacketOffset = 0;
gs->dtlsPacket.len = 0;
rv = SECFailure;
return rv;
}
/* OK, we have at least one complete packet, copy into inbuf */
if (gs->remainder > gs->inbuf.space) {
err = sslBuffer_Grow(&gs->inbuf, gs->remainder);
if (err) { /* realloc has set error code to no mem. */
return err;
}
}
memcpy(gs->inbuf.buf, gs->dtlsPacket.buf + gs->dtlsPacketOffset,
gs->remainder);
gs->inbuf.len = gs->remainder;
gs->offset = gs->remainder;
gs->dtlsPacketOffset += gs->remainder;
gs->state = GS_INIT;
return 1;
}
int
ssl3_GatherCompleteHandshake(sslSocket *ss, int flags)
{
SSL3Ciphertext cText;
int rv;
PRBool keepGoing = PR_TRUE;
SSL_TRC(30, ("ssl3_GatherCompleteHandshake"));
PORT_Assert( ss->opt.noLocks || ssl_Have1stHandshakeLock(ss) );
PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
do {
PRBool handleRecordNow = PR_FALSE;
ssl_GetSSL3HandshakeLock(ss);
if (ss->ssl3.hs.restartTarget) {
ssl_ReleaseSSL3HandshakeLock(ss);
PORT_SetError(PR_WOULD_BLOCK_ERROR);
return (int) SECFailure;
}
if (ss->ssl3.hs.msgState.buf) {
if (ss->ssl3.hs.msgState.len == 0) {
ss->ssl3.hs.msgState.buf = NULL;
} else {
handleRecordNow = PR_TRUE;
}
}
ssl_ReleaseSSL3HandshakeLock(ss);
if (handleRecordNow) {
rv = ssl3_HandleRecord(ss, NULL, &ss->gs.buf);
} else {
if (!IS_DTLS(ss)) {
rv = ssl3_GatherData(ss, &ss->gs, flags);
} else {
rv = dtls_GatherData(ss, &ss->gs, flags);
if (rv == SECFailure &&
(PORT_GetError() == PR_WOULD_BLOCK_ERROR)) {
ssl_GetSSL3HandshakeLock(ss);
dtls_CheckTimer(ss);
ssl_ReleaseSSL3HandshakeLock(ss);
PORT_SetError(PR_WOULD_BLOCK_ERROR);
}
}
if (rv <= 0) {
return rv;
}
cText.type = (SSL3ContentType)ss->gs.hdr[0];
cText.version = (ss->gs.hdr[1] << 8) | ss->gs.hdr[2];
if (IS_DTLS(ss)) {
int i;
cText.version = dtls_DTLSVersionToTLSVersion(cText.version);
cText.seq_num.high = 0;
cText.seq_num.low = 0;
for (i = 0; i < 4; i++) {
cText.seq_num.high <<= 8;
cText.seq_num.low <<= 8;
cText.seq_num.high |= ss->gs.hdr[3 + i];
cText.seq_num.low |= ss->gs.hdr[7 + i];
}
}
cText.buf = &ss->gs.inbuf;
rv = ssl3_HandleRecord(ss, &cText, &ss->gs.buf);
if (rv == (int) SECSuccess && ss->gs.buf.len > 0) {
PORT_Assert(ss->firstHsDone);
PORT_Assert(cText.type == content_application_data);
break;
}
}
if (rv < 0) {
return ss->recvdCloseNotify ? 0 : rv;
}
PORT_Assert(keepGoing);
ssl_GetSSL3HandshakeLock(ss);
if (ss->ssl3.hs.ws == idle_handshake) {
PORT_Assert(ss->firstHsDone);
PORT_Assert(!ss->ssl3.hs.canFalseStart);
keepGoing = PR_FALSE;
} else if (ss->ssl3.hs.canFalseStart) {
PORT_Assert(!ss->firstHsDone);
if (ssl3_WaitingForStartOfServerSecondRound(ss)) {
keepGoing = PR_FALSE;
} else {
ss->ssl3.hs.canFalseStart = PR_FALSE;
}
}
ssl_ReleaseSSL3HandshakeLock(ss);
} while (keepGoing);
ss->gs.readOffset = 0;
ss->gs.writeOffset = ss->gs.buf.len;
return 1;
}
static int
ssl3_GatherData(sslSocket *ss, sslGather *gs, int flags)
{
unsigned char *bp;
unsigned char *lbp;
int nb;
int err;
int rv = 1;
PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
if (gs->state == GS_INIT) {
gs->state = GS_HEADER;
gs->remainder = 5;
gs->offset = 0;
gs->writeOffset = 0;
gs->readOffset = 0;
gs->inbuf.len = 0;
}
lbp = gs->inbuf.buf;
for(;;) {
SSL_TRC(30, ("%d: SSL3[%d]: gather state %d (need %d more)",
SSL_GETPID(), ss->fd, gs->state, gs->remainder));
bp = ((gs->state != GS_HEADER) ? lbp : gs->hdr) + gs->offset;
nb = ssl_DefRecv(ss, bp, gs->remainder, flags);
if (nb > 0) {
PRINT_BUF(60, (ss, "raw gather data:", bp, nb));
} else if (nb == 0) {
SSL_TRC(30, ("%d: SSL3[%d]: EOF", SSL_GETPID(), ss->fd));
rv = 0;
break;
} else {
SSL_DBG(("%d: SSL3[%d]: recv error %d", SSL_GETPID(), ss->fd,
PR_GetError()));
rv = SECFailure;
break;
}
PORT_Assert( nb <= gs->remainder );
if (nb > gs->remainder) {
gs->state = GS_INIT;
rv = SECFailure;
break;
}
gs->offset += nb;
gs->remainder -= nb;
if (gs->state == GS_DATA)
gs->inbuf.len += nb;
if (gs->remainder > 0) {
continue;
}
switch (gs->state) {
case GS_HEADER:
gs->remainder = (gs->hdr[3] << 8) | gs->hdr[4];
if(gs->remainder > (MAX_FRAGMENT_LENGTH + 2048 + 5)) {
SSL3_SendAlert(ss, alert_fatal, unexpected_message);
gs->state = GS_INIT;
PORT_SetError(SSL_ERROR_RX_RECORD_TOO_LONG);
return SECFailure;
}
gs->state = GS_DATA;
gs->offset = 0;
gs->inbuf.len = 0;
if (gs->remainder > gs->inbuf.space) {
err = sslBuffer_Grow(&gs->inbuf, gs->remainder);
if (err) {
return err;
}
lbp = gs->inbuf.buf;
}
break;
case GS_DATA:
gs->state = GS_INIT;
return 1;
}
}
return rv;
}
static int
dtls_GatherData(sslSocket *ss, sslGather *gs, int flags)
{
int nb;
int err;
int rv = 1;
SSL_TRC(30, ("dtls_GatherData"));
PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
gs->state = GS_HEADER;
gs->offset = 0;
if (gs->dtlsPacketOffset == gs->dtlsPacket.len) {
gs->dtlsPacketOffset = 0;
gs->dtlsPacket.len = 0;
if (gs->dtlsPacket.space < MAX_FRAGMENT_LENGTH + 2048 + 13) {
err = sslBuffer_Grow(&gs->dtlsPacket,
MAX_FRAGMENT_LENGTH + 2048 + 13);
if (err) {
return err;
}
}
nb = ssl_DefRecv(ss, gs->dtlsPacket.buf, gs->dtlsPacket.space, flags);
if (nb > 0) {
PRINT_BUF(60, (ss, "raw gather data:", gs->dtlsPacket.buf, nb));
} else if (nb == 0) {
SSL_TRC(30, ("%d: SSL3[%d]: EOF", SSL_GETPID(), ss->fd));
rv = 0;
return rv;
} else {
SSL_DBG(("%d: SSL3[%d]: recv error %d", SSL_GETPID(), ss->fd,
PR_GetError()));
rv = SECFailure;
return rv;
}
gs->dtlsPacket.len = nb;
}
if ((gs->dtlsPacket.len - gs->dtlsPacketOffset) < 13) {
SSL_DBG(("%d: SSL3[%d]: rest of DTLS packet "
"too short to contain header", SSL_GETPID(), ss->fd));
PR_SetError(PR_WOULD_BLOCK_ERROR, 0);
gs->dtlsPacketOffset = 0;
gs->dtlsPacket.len = 0;
rv = SECFailure;
return rv;
}
memcpy(gs->hdr, gs->dtlsPacket.buf + gs->dtlsPacketOffset, 13);
gs->dtlsPacketOffset += 13;
gs->remainder = (gs->hdr[11] << 8) | gs->hdr[12];
if ((gs->dtlsPacket.len - gs->dtlsPacketOffset) < gs->remainder) {
SSL_DBG(("%d: SSL3[%d]: rest of DTLS packet too short "
"to contain rest of body", SSL_GETPID(), ss->fd));
PR_SetError(PR_WOULD_BLOCK_ERROR, 0);
gs->dtlsPacketOffset = 0;
gs->dtlsPacket.len = 0;
rv = SECFailure;
return rv;
}
if (gs->remainder > gs->inbuf.space) {
err = sslBuffer_Grow(&gs->inbuf, gs->remainder);
if (err) {
return err;
}
}
memcpy(gs->inbuf.buf, gs->dtlsPacket.buf + gs->dtlsPacketOffset,
gs->remainder);
gs->inbuf.len = gs->remainder;
gs->offset = gs->remainder;
gs->dtlsPacketOffset += gs->remainder;
gs->state = GS_INIT;
return 1;
}