static void on_underlying_io_bytes_received(void* context, const unsigned char* buffer, size_t size)
{
TLS_IO_INSTANCE* tls_io_instance = (TLS_IO_INSTANCE*)context;
if (resize_receive_buffer(tls_io_instance, tls_io_instance->received_byte_count + size) == 0)
{
memcpy(tls_io_instance->received_bytes + tls_io_instance->received_byte_count, buffer, size);
tls_io_instance->received_byte_count += size;
if (size > tls_io_instance->needed_bytes)
{
tls_io_instance->needed_bytes = 0;
}
else
{
tls_io_instance->needed_bytes -= size;
}
switch (tls_io_instance->tlsio_state)
{
default:
break;
case TLSIO_STATE_ERROR:
break;
case TLSIO_STATE_HANDSHAKE_CLIENT_HELLO_SENT:
{
if (tls_io_instance->needed_bytes == 0)
{
SecBuffer input_buffers[2];
SecBuffer output_buffers[2];
ULONG context_attributes;
/* we need to try and perform the second (next) step of the init */
input_buffers[0].cbBuffer = tls_io_instance->received_byte_count;
input_buffers[0].BufferType = SECBUFFER_TOKEN;
input_buffers[0].pvBuffer = (void*)tls_io_instance->received_bytes;
input_buffers[1].cbBuffer = 0;
input_buffers[1].BufferType = SECBUFFER_EMPTY;
input_buffers[1].pvBuffer = 0;
SecBufferDesc input_buffers_desc;
input_buffers_desc.cBuffers = 2;
input_buffers_desc.pBuffers = input_buffers;
input_buffers_desc.ulVersion = SECBUFFER_VERSION;
output_buffers[0].cbBuffer = 0;
output_buffers[0].BufferType = SECBUFFER_TOKEN;
output_buffers[0].pvBuffer = NULL;
output_buffers[1].cbBuffer = 0;
output_buffers[1].BufferType = SECBUFFER_EMPTY;
output_buffers[1].pvBuffer = 0;
SecBufferDesc output_buffers_desc;
output_buffers_desc.cBuffers = 2;
output_buffers_desc.pBuffers = output_buffers;
output_buffers_desc.ulVersion = SECBUFFER_VERSION;
SECURITY_STATUS status = InitializeSecurityContext(&tls_io_instance->credential_handle,
&tls_io_instance->security_context, (SEC_CHAR*)tls_io_instance->host_name, ISC_REQ_EXTENDED_ERROR | ISC_REQ_STREAM | ISC_REQ_ALLOCATE_MEMORY | ISC_REQ_USE_SUPPLIED_CREDS, 0, 0, &input_buffers_desc, 0,
&tls_io_instance->security_context, &output_buffers_desc,
&context_attributes, NULL);
switch (status)
{
case SEC_E_INCOMPLETE_MESSAGE:
if (input_buffers[1].BufferType != SECBUFFER_MISSING)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->open_callback_context, IO_OPEN_ERROR);
}
}
else
{
tls_io_instance->needed_bytes = input_buffers[1].cbBuffer;
tls_io_instance->consumed_bytes += tls_io_instance->needed_bytes;
if (resize_receive_buffer(tls_io_instance, tls_io_instance->received_byte_count + tls_io_instance->needed_bytes) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->open_callback_context, IO_OPEN_ERROR);
}
}
}
break;
case SEC_E_OK:
memmove(tls_io_instance->received_bytes, tls_io_instance->received_bytes + tls_io_instance->consumed_bytes, tls_io_instance->received_byte_count - tls_io_instance->consumed_bytes);
tls_io_instance->received_byte_count -= tls_io_instance->consumed_bytes;
tls_io_instance->needed_bytes = 1;
tls_io_instance->consumed_bytes = tls_io_instance->needed_bytes;
if (set_receive_buffer(tls_io_instance, tls_io_instance->needed_bytes + tls_io_instance->received_byte_count) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->open_callback_context, IO_OPEN_ERROR);
}
}
else
{
tls_io_instance->tlsio_state = TLSIO_STATE_OPEN;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->open_callback_context, IO_OPEN_OK);
}
}
break;
case SEC_I_COMPLETE_NEEDED:
case SEC_I_CONTINUE_NEEDED:
case SEC_I_COMPLETE_AND_CONTINUE:
if ((output_buffers[0].cbBuffer > 0) && xio_send(tls_io_instance->socket_io, output_buffers[0].pvBuffer, output_buffers[0].cbBuffer, NULL, NULL) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->open_callback_context, IO_OPEN_ERROR);
}
}
else
{
(void)memmove(tls_io_instance->received_bytes, tls_io_instance->received_bytes + tls_io_instance->consumed_bytes, tls_io_instance->received_byte_count - tls_io_instance->consumed_bytes);
tls_io_instance->received_byte_count -= tls_io_instance->consumed_bytes;
/* set the needed bytes to 1, to get on the next byte how many we actually need */
tls_io_instance->needed_bytes = 1;
tls_io_instance->consumed_bytes = tls_io_instance->needed_bytes;
if (set_receive_buffer(tls_io_instance, tls_io_instance->needed_bytes + tls_io_instance->received_byte_count) != 0)
{
FreeCredentialHandle(&tls_io_instance->credential_handle);
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->open_callback_context, IO_OPEN_ERROR);
}
}
else
{
tls_io_instance->tlsio_state = TLSIO_STATE_HANDSHAKE_CLIENT_HELLO_SENT;
}
}
break;
}
}
break;
case TLSIO_STATE_OPEN:
{
if (tls_io_instance->needed_bytes == 0)
{
SecBuffer security_buffers[4];
SecBufferDesc security_buffers_desc;
security_buffers[0].BufferType = SECBUFFER_DATA;
security_buffers[0].pvBuffer = tls_io_instance->received_bytes;
security_buffers[0].cbBuffer = tls_io_instance->received_byte_count;
security_buffers[1].BufferType = SECBUFFER_EMPTY;
security_buffers[2].BufferType = SECBUFFER_EMPTY;
security_buffers[3].BufferType = SECBUFFER_EMPTY;
security_buffers_desc.cBuffers = sizeof(security_buffers) / sizeof(security_buffers[0]);
security_buffers_desc.pBuffers = security_buffers;
security_buffers_desc.ulVersion = SECBUFFER_VERSION;
SECURITY_STATUS status = DecryptMessage(&tls_io_instance->security_context, &security_buffers_desc, 0, NULL);
switch (status)
{
case SEC_E_INCOMPLETE_MESSAGE:
if (security_buffers[1].BufferType != SECBUFFER_MISSING)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
indicate_error(tls_io_instance);
}
else
{
tls_io_instance->needed_bytes = security_buffers[1].cbBuffer;
tls_io_instance->consumed_bytes += tls_io_instance->needed_bytes;
if (resize_receive_buffer(tls_io_instance, tls_io_instance->received_byte_count + tls_io_instance->needed_bytes) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
indicate_error(tls_io_instance);
}
}
break;
case SEC_E_OK:
if (security_buffers[1].BufferType != SECBUFFER_DATA)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
indicate_error(tls_io_instance);
}
else
{
size_t i;
for (i = 0; i < security_buffers[1].cbBuffer; i++)
{
LOG(tls_io_instance->logger_log, 0, "<-%02x ", ((unsigned char*)security_buffers[1].pvBuffer)[i]);
}
/* notify of the received data */
if (tls_io_instance->on_bytes_received != NULL)
{
tls_io_instance->on_bytes_received(tls_io_instance->open_callback_context, security_buffers[1].pvBuffer, security_buffers[1].cbBuffer);
}
(void)memmove(tls_io_instance->received_bytes, tls_io_instance->received_bytes + tls_io_instance->consumed_bytes, tls_io_instance->received_byte_count - tls_io_instance->consumed_bytes);
tls_io_instance->received_byte_count -= tls_io_instance->consumed_bytes;
tls_io_instance->needed_bytes = 1;
tls_io_instance->consumed_bytes = tls_io_instance->needed_bytes;
if (set_receive_buffer(tls_io_instance, tls_io_instance->needed_bytes + tls_io_instance->received_byte_count) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
indicate_error(tls_io_instance);
}
}
break;
}
}
break;
}
}
}
}
}
static void on_underlying_io_bytes_received(void* context, const unsigned char* buffer, size_t size)
{
TLS_IO_INSTANCE* tls_io_instance = (TLS_IO_INSTANCE*)context;
size_t consumed_bytes;
LOG(tls_io_instance->logger_log, LOG_LINE, "%d received on tls_schannel", size);
if (resize_receive_buffer(tls_io_instance, tls_io_instance->received_byte_count + size) == 0)
{
memcpy(tls_io_instance->received_bytes + tls_io_instance->received_byte_count, buffer, size);
tls_io_instance->received_byte_count += size;
if (size > tls_io_instance->needed_bytes)
{
tls_io_instance->needed_bytes = 0;
}
else
{
tls_io_instance->needed_bytes -= size;
}
/* Drain what we received */
while (tls_io_instance->needed_bytes == 0)
{
if (tls_io_instance->tlsio_state == TLSIO_STATE_HANDSHAKE_CLIENT_HELLO_SENT)
{
SecBuffer input_buffers[2];
SecBuffer output_buffers[2];
ULONG context_attributes;
/* we need to try and perform the second (next) step of the init */
input_buffers[0].cbBuffer = tls_io_instance->received_byte_count;
input_buffers[0].BufferType = SECBUFFER_TOKEN;
input_buffers[0].pvBuffer = (void*)tls_io_instance->received_bytes;
input_buffers[1].cbBuffer = 0;
input_buffers[1].BufferType = SECBUFFER_EMPTY;
input_buffers[1].pvBuffer = 0;
SecBufferDesc input_buffers_desc;
input_buffers_desc.cBuffers = 2;
input_buffers_desc.pBuffers = input_buffers;
input_buffers_desc.ulVersion = SECBUFFER_VERSION;
output_buffers[0].cbBuffer = 0;
output_buffers[0].BufferType = SECBUFFER_TOKEN;
output_buffers[0].pvBuffer = NULL;
output_buffers[1].cbBuffer = 0;
output_buffers[1].BufferType = SECBUFFER_EMPTY;
output_buffers[1].pvBuffer = 0;
SecBufferDesc output_buffers_desc;
output_buffers_desc.cBuffers = 2;
output_buffers_desc.pBuffers = output_buffers;
output_buffers_desc.ulVersion = SECBUFFER_VERSION;
unsigned long flags = ISC_REQ_EXTENDED_ERROR | ISC_REQ_STREAM | ISC_REQ_ALLOCATE_MEMORY | ISC_REQ_USE_SUPPLIED_CREDS;
SECURITY_STATUS status = InitializeSecurityContext(&tls_io_instance->credential_handle,
&tls_io_instance->security_context, (SEC_CHAR*)tls_io_instance->host_name, flags, 0, 0, &input_buffers_desc, 0,
&tls_io_instance->security_context, &output_buffers_desc,
&context_attributes, NULL);
switch (status)
{
case SEC_E_INCOMPLETE_MESSAGE:
if (input_buffers[1].BufferType != SECBUFFER_MISSING)
{
//If SECBUFFER_MISSING not sent, try to read byte by byte.
tls_io_instance->needed_bytes = 1;
}
else
{
tls_io_instance->needed_bytes = input_buffers[1].cbBuffer;
}
if (resize_receive_buffer(tls_io_instance, tls_io_instance->received_byte_count + tls_io_instance->needed_bytes) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
break;
case SEC_E_OK:
consumed_bytes = tls_io_instance->received_byte_count;
/* Any extra bytes left over or did we fully consume the receive buffer? */
if (input_buffers[1].BufferType == SECBUFFER_EXTRA)
{
consumed_bytes -= input_buffers[1].cbBuffer;
(void)memmove(tls_io_instance->received_bytes, tls_io_instance->received_bytes + consumed_bytes, tls_io_instance->received_byte_count - consumed_bytes);
}
tls_io_instance->received_byte_count -= consumed_bytes;
/* if nothing more to consume, set the needed bytes to 1, to get on the next byte how many we actually need */
tls_io_instance->needed_bytes = tls_io_instance->received_byte_count == 0 ? 1 : 0;
if (set_receive_buffer(tls_io_instance, tls_io_instance->needed_bytes + tls_io_instance->received_byte_count) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
else
{
tls_io_instance->tlsio_state = TLSIO_STATE_OPEN;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_OK);
}
}
break;
case SEC_I_COMPLETE_NEEDED:
case SEC_I_CONTINUE_NEEDED:
case SEC_I_COMPLETE_AND_CONTINUE:
if ((output_buffers[0].cbBuffer > 0) && xio_send(tls_io_instance->socket_io, output_buffers[0].pvBuffer, output_buffers[0].cbBuffer, NULL, NULL) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
else
{
consumed_bytes = tls_io_instance->received_byte_count;
/* Any extra bytes left over or did we fully consume the receive buffer? */
if (input_buffers[1].BufferType == SECBUFFER_EXTRA)
{
consumed_bytes -= input_buffers[1].cbBuffer;
(void)memmove(tls_io_instance->received_bytes, tls_io_instance->received_bytes + consumed_bytes, tls_io_instance->received_byte_count - consumed_bytes);
}
tls_io_instance->received_byte_count -= consumed_bytes;
/* if nothing more to consume, set the needed bytes to 1, to get on the next byte how many we actually need */
tls_io_instance->needed_bytes = tls_io_instance->received_byte_count == 0 ? 1 : 0;
if (set_receive_buffer(tls_io_instance, tls_io_instance->needed_bytes + tls_io_instance->received_byte_count) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
else
{
tls_io_instance->tlsio_state = TLSIO_STATE_HANDSHAKE_CLIENT_HELLO_SENT;
}
}
break;
case SEC_E_UNTRUSTED_ROOT:
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
break;
default:
{
LPVOID srcText = NULL;
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
status, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)srcText, 0, NULL) > 0)
{
LogError("[%#x] %s", status, (LPTSTR)srcText);
LocalFree(srcText);
}
else
{
LogError("[%#x]", status);
}
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
indicate_error(tls_io_instance);
}
break;
}
}
else if (tls_io_instance->tlsio_state == TLSIO_STATE_OPEN)
{
SecBuffer security_buffers[4];
SecBufferDesc security_buffers_desc;
security_buffers[0].BufferType = SECBUFFER_DATA;
security_buffers[0].pvBuffer = tls_io_instance->received_bytes;
security_buffers[0].cbBuffer = tls_io_instance->received_byte_count;
security_buffers[1].BufferType = SECBUFFER_EMPTY;
security_buffers[2].BufferType = SECBUFFER_EMPTY;
security_buffers[3].BufferType = SECBUFFER_EMPTY;
security_buffers_desc.cBuffers = sizeof(security_buffers) / sizeof(security_buffers[0]);
security_buffers_desc.pBuffers = security_buffers;
security_buffers_desc.ulVersion = SECBUFFER_VERSION;
SECURITY_STATUS status = DecryptMessage(&tls_io_instance->security_context, &security_buffers_desc, 0, NULL);
switch (status)
{
case SEC_E_INCOMPLETE_MESSAGE:
if (security_buffers[1].BufferType != SECBUFFER_MISSING)
{
//If SECBUFFER_MISSING not sent, try to read byte by byte.
tls_io_instance->needed_bytes = 1;
}
else
{
tls_io_instance->needed_bytes = security_buffers[1].cbBuffer;
}
if (resize_receive_buffer(tls_io_instance, tls_io_instance->received_byte_count + tls_io_instance->needed_bytes) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
indicate_error(tls_io_instance);
}
break;
case SEC_E_OK:
if (security_buffers[1].BufferType != SECBUFFER_DATA)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
indicate_error(tls_io_instance);
}
else
{
size_t i;
if (tls_io_instance->logger_log)
{
for (i = 0; i < security_buffers[1].cbBuffer; i++)
{
LOG(tls_io_instance->logger_log, 0, "-> %02x ", ((unsigned char*)security_buffers[1].pvBuffer)[i]);
}
LOG(tls_io_instance->logger_log, LOG_LINE, "");
}
/* notify of the received data */
if (tls_io_instance->on_bytes_received != NULL)
{
tls_io_instance->on_bytes_received(tls_io_instance->on_bytes_received_context, security_buffers[1].pvBuffer, security_buffers[1].cbBuffer);
}
consumed_bytes = tls_io_instance->received_byte_count;
LOG(tls_io_instance->logger_log, LOG_LINE, "%d consumed", tls_io_instance->received_byte_count);
for (i = 0; i < sizeof(security_buffers) / sizeof(security_buffers[0]); i++)
{
/* Any extra bytes left over or did we fully consume the receive buffer? */
if (security_buffers[i].BufferType == SECBUFFER_EXTRA)
{
consumed_bytes -= security_buffers[i].cbBuffer;
(void)memmove(tls_io_instance->received_bytes, tls_io_instance->received_bytes + consumed_bytes, tls_io_instance->received_byte_count - consumed_bytes);
break;
}
}
tls_io_instance->received_byte_count -= consumed_bytes;
/* if nothing more to consume, set the needed bytes to 1, to get on the next byte how many we actually need */
tls_io_instance->needed_bytes = tls_io_instance->received_byte_count == 0 ? 1 : 0;
if (set_receive_buffer(tls_io_instance, tls_io_instance->needed_bytes + tls_io_instance->received_byte_count) != 0)
{
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
indicate_error(tls_io_instance);
}
}
break;
default:
{
LPVOID srcText = NULL;
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
status, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)srcText, 0, NULL) > 0)
{
LogError("[%#x] %s", status, (LPTSTR)srcText);
LocalFree(srcText);
}
else
{
LogError("[%#x]", status);
}
tls_io_instance->tlsio_state = TLSIO_STATE_ERROR;
indicate_error(tls_io_instance);
}
break;
}
}
else
{
/* Received data in error or other state */
break;
}
}
}
}
static void on_underlying_io_bytes_received(void* context, const unsigned char* buffer, size_t size)
{
TLS_IO_INSTANCE* tls_io_instance = (TLS_IO_INSTANCE*)context;
size_t consumed_bytes;
if (resize_receive_buffer(tls_io_instance, tls_io_instance->received_byte_count + size) == 0)
{
(void)memcpy(tls_io_instance->received_bytes + tls_io_instance->received_byte_count, buffer, size);
tls_io_instance->received_byte_count += size;
if (size > tls_io_instance->needed_bytes)
{
tls_io_instance->needed_bytes = 0;
}
else
{
tls_io_instance->needed_bytes -= size;
}
/* Drain what we received */
while (tls_io_instance->needed_bytes == 0)
{
if ((tls_io_instance->tlsio_state == TLS_SERVER_IO_STATE_IN_HANDSHAKE) ||
(tls_io_instance->tlsio_state == TLS_SERVER_IO_STATE_WAITING_FOR_CLIENT_HELLO))
{
SecBuffer input_buffers[2];
SecBuffer output_buffers[2];
ULONG context_attributes;
SECURITY_STATUS status;
SecBufferDesc input_buffers_desc;
SecBufferDesc output_buffers_desc;
input_buffers[0].cbBuffer = (unsigned long)tls_io_instance->received_byte_count;
input_buffers[0].BufferType = SECBUFFER_TOKEN;
input_buffers[0].pvBuffer = (void*)tls_io_instance->received_bytes;
input_buffers[1].cbBuffer = 0;
input_buffers[1].BufferType = SECBUFFER_EMPTY;
input_buffers[1].pvBuffer = 0;
input_buffers_desc.cBuffers = 2;
input_buffers_desc.pBuffers = input_buffers;
input_buffers_desc.ulVersion = SECBUFFER_VERSION;
output_buffers[0].cbBuffer = 0;
output_buffers[0].BufferType = SECBUFFER_TOKEN;
output_buffers[0].pvBuffer = NULL;
output_buffers[1].cbBuffer = 0;
output_buffers[1].BufferType = SECBUFFER_EMPTY;
output_buffers[1].pvBuffer = 0;
output_buffers_desc.cBuffers = 2;
output_buffers_desc.pBuffers = output_buffers;
output_buffers_desc.ulVersion = SECBUFFER_VERSION;
status = AcceptSecurityContext(&tls_io_instance->credential_handle, (tls_io_instance->tlsio_state == TLS_SERVER_IO_STATE_WAITING_FOR_CLIENT_HELLO) ? NULL : &tls_io_instance->security_context, &input_buffers_desc, ASC_REQ_ALLOCATE_MEMORY, SECURITY_NETWORK_DREP, (tls_io_instance->tlsio_state == TLS_SERVER_IO_STATE_WAITING_FOR_CLIENT_HELLO) ? &tls_io_instance->security_context : NULL,
&output_buffers_desc, &context_attributes, NULL);
switch (status)
{
case SEC_E_INCOMPLETE_MESSAGE:
if (input_buffers[1].BufferType != SECBUFFER_MISSING)
{
//If SECBUFFER_MISSING not sent, try to read byte by byte.
tls_io_instance->needed_bytes = 1;
}
else
{
tls_io_instance->needed_bytes = input_buffers[1].cbBuffer;
}
if (resize_receive_buffer(tls_io_instance, tls_io_instance->received_byte_count + tls_io_instance->needed_bytes) != 0)
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
break;
case SEC_E_OK:
if ((output_buffers[0].cbBuffer > 0) && xio_send(tls_io_instance->socket_io, output_buffers[0].pvBuffer, output_buffers[0].cbBuffer, NULL, NULL) != 0)
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
else
{
consumed_bytes = tls_io_instance->received_byte_count;
/* Any extra bytes left over or did we fully consume the receive buffer? */
if (input_buffers[1].BufferType == SECBUFFER_EXTRA)
{
consumed_bytes -= input_buffers[1].cbBuffer;
(void)memmove(tls_io_instance->received_bytes, tls_io_instance->received_bytes + consumed_bytes, tls_io_instance->received_byte_count - consumed_bytes);
}
tls_io_instance->received_byte_count -= consumed_bytes;
/* if nothing more to consume, set the needed bytes to 1, to get on the next byte how many we actually need */
tls_io_instance->needed_bytes = tls_io_instance->received_byte_count == 0 ? 1 : 0;
if (set_receive_buffer(tls_io_instance, tls_io_instance->needed_bytes + tls_io_instance->received_byte_count) != 0)
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
else
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_OPEN;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_OK);
}
}
}
break;
case SEC_I_COMPLETE_NEEDED:
case SEC_I_CONTINUE_NEEDED:
case SEC_I_COMPLETE_AND_CONTINUE:
if ((output_buffers[0].cbBuffer > 0) && xio_send(tls_io_instance->socket_io, output_buffers[0].pvBuffer, output_buffers[0].cbBuffer, NULL, NULL) != 0)
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
else
{
consumed_bytes = tls_io_instance->received_byte_count;
/* Any extra bytes left over or did we fully consume the receive buffer? */
if (input_buffers[1].BufferType == SECBUFFER_EXTRA)
{
consumed_bytes -= input_buffers[1].cbBuffer;
(void)memmove(tls_io_instance->received_bytes, tls_io_instance->received_bytes + consumed_bytes, tls_io_instance->received_byte_count - consumed_bytes);
}
tls_io_instance->received_byte_count -= consumed_bytes;
/* if nothing more to consume, set the needed bytes to 1, to get on the next byte how many we actually need */
tls_io_instance->needed_bytes = tls_io_instance->received_byte_count == 0 ? 1 : 0;
if (set_receive_buffer(tls_io_instance, tls_io_instance->needed_bytes + tls_io_instance->received_byte_count) != 0)
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
else
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_IN_HANDSHAKE;
}
}
break;
default:
{
LPVOID srcText = NULL;
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
status, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)srcText, 0, NULL) > 0)
{
LogError("[%#x] %s", status, (LPTSTR)srcText);
LocalFree(srcText);
}
else
{
LogError("[%#x]", status);
}
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
if (tls_io_instance->on_io_open_complete != NULL)
{
tls_io_instance->on_io_open_complete(tls_io_instance->on_io_open_complete_context, IO_OPEN_ERROR);
}
}
break;
}
}
else if (tls_io_instance->tlsio_state == TLS_SERVER_IO_STATE_OPEN)
{
SecBuffer security_buffers[4];
SecBufferDesc security_buffers_desc;
SECURITY_STATUS status;
security_buffers[0].BufferType = SECBUFFER_DATA;
security_buffers[0].pvBuffer = tls_io_instance->received_bytes;
security_buffers[0].cbBuffer = (unsigned long)tls_io_instance->received_byte_count;
security_buffers[1].BufferType = SECBUFFER_EMPTY;
security_buffers[2].BufferType = SECBUFFER_EMPTY;
security_buffers[3].BufferType = SECBUFFER_EMPTY;
security_buffers_desc.cBuffers = sizeof(security_buffers) / sizeof(security_buffers[0]);
security_buffers_desc.pBuffers = security_buffers;
security_buffers_desc.ulVersion = SECBUFFER_VERSION;
status = DecryptMessage(&tls_io_instance->security_context, &security_buffers_desc, 0, NULL);
switch (status)
{
case SEC_E_INCOMPLETE_MESSAGE:
if (security_buffers[1].BufferType != SECBUFFER_MISSING)
{
//If SECBUFFER_MISSING not sent, try to read byte by byte.
tls_io_instance->needed_bytes = 1;
}
else
{
tls_io_instance->needed_bytes = security_buffers[1].cbBuffer;
}
if (resize_receive_buffer(tls_io_instance, tls_io_instance->received_byte_count + tls_io_instance->needed_bytes) != 0)
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
indicate_error(tls_io_instance);
}
break;
case SEC_E_OK:
if (security_buffers[1].BufferType != SECBUFFER_DATA)
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
indicate_error(tls_io_instance);
}
else
{
size_t i;
/* notify of the received data */
if (tls_io_instance->on_bytes_received != NULL)
{
tls_io_instance->on_bytes_received(tls_io_instance->on_bytes_received_context, (const unsigned char *) security_buffers[1].pvBuffer, security_buffers[1].cbBuffer);
}
consumed_bytes = tls_io_instance->received_byte_count;
for (i = 0; i < sizeof(security_buffers) / sizeof(security_buffers[0]); i++)
{
/* Any extra bytes left over or did we fully consume the receive buffer? */
if (security_buffers[i].BufferType == SECBUFFER_EXTRA)
{
consumed_bytes -= security_buffers[i].cbBuffer;
(void)memmove(tls_io_instance->received_bytes, tls_io_instance->received_bytes + consumed_bytes, tls_io_instance->received_byte_count - consumed_bytes);
break;
}
}
tls_io_instance->received_byte_count -= consumed_bytes;
/* if nothing more to consume, set the needed bytes to 1, to get on the next byte how many we actually need */
tls_io_instance->needed_bytes = tls_io_instance->received_byte_count == 0 ? 1 : 0;
if (set_receive_buffer(tls_io_instance, tls_io_instance->needed_bytes + tls_io_instance->received_byte_count) != 0)
{
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
indicate_error(tls_io_instance);
}
}
break;
default:
{
LPVOID srcText = NULL;
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
status, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)srcText, 0, NULL) > 0)
{
LogError("[%#x] %s", status, (LPTSTR)srcText);
LocalFree(srcText);
}
else
{
LogError("[%#x]", status);
}
tls_io_instance->tlsio_state = TLS_SERVER_IO_STATE_ERROR;
indicate_error(tls_io_instance);
}
break;
}
}
else
{
/* Received data in error or other state */
break;
}
}
}
}
