mirror of https://github.com/ARMmbed/mbed-os.git
61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
#include "DTLSSocketWrapper.h"
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#include "platform/Callback.h"
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#include "drivers/Timer.h"
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#include "events/mbed_events.h"
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#include "rtos/Kernel.h"
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#if defined(MBEDTLS_SSL_CLI_C)
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DTLSSocketWrapper::DTLSSocketWrapper(Socket *transport, const char *hostname, control_transport control) :
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TLSSocketWrapper(transport, hostname, control),
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_int_ms_tick(0),
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_timer_event_id(0),
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_timer_expired(false)
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{
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mbedtls_ssl_conf_transport( get_ssl_config(), MBEDTLS_SSL_TRANSPORT_DATAGRAM);
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mbedtls_ssl_set_timer_cb( get_ssl_context(), this, timing_set_delay, timing_get_delay);
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}
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void DTLSSocketWrapper::timing_set_delay(void *ctx, uint32_t int_ms, uint32_t fin_ms)
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{
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DTLSSocketWrapper *context = static_cast<DTLSSocketWrapper *>(ctx);
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if (context->_timer_event_id) {
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mbed::mbed_event_queue()->cancel(context->_timer_event_id);
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context->_timer_expired = false;
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}
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if (fin_ms == 0) {
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context->_timer_event_id = 0;
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return;
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}
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context->_int_ms_tick = rtos::Kernel::get_ms_count() + int_ms;
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context->_timer_event_id = mbed::mbed_event_queue()->call_in(fin_ms, context, &DTLSSocketWrapper::timer_event);
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}
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int DTLSSocketWrapper::timing_get_delay(void *ctx)
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{
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DTLSSocketWrapper *context = static_cast<DTLSSocketWrapper *>(ctx);
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/* See documentation of "typedef int mbedtls_ssl_get_timer_t( void * ctx );" from ssl.h */
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if (context->_timer_event_id == 0) {
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return -1;
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} else if (context->_timer_expired) {
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return 2;
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} else if (context->_int_ms_tick < rtos::Kernel::get_ms_count()) {
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return 1;
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} else {
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return 0;
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}
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}
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void DTLSSocketWrapper::timer_event(void)
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{
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_timer_expired = true;
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event();
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}
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#endif /* MBEDTLS_SSL_CLI_C */
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