A local copy of OpenSSL from GitHub
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  1. /*
  2. * Copyright 2005-2020 The OpenSSL Project Authors. All Rights Reserved.
  3. *
  4. * Licensed under the Apache License 2.0 (the "License"). You may not use
  5. * this file except in compliance with the License. You can obtain a copy
  6. * in the file LICENSE in the source distribution or at
  7. * https://www.openssl.org/source/license.html
  8. */
  9. #include "ssl_local.h"
  10. int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
  11. size_t *written)
  12. {
  13. int i;
  14. if (SSL_in_init(s) && !ossl_statem_get_in_handshake(s)) {
  15. i = s->handshake_func(s);
  16. if (i < 0)
  17. return i;
  18. if (i == 0) {
  19. ERR_raise(ERR_LIB_SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
  20. return -1;
  21. }
  22. }
  23. if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
  24. ERR_raise(ERR_LIB_SSL, SSL_R_DTLS_MESSAGE_TOO_BIG);
  25. return -1;
  26. }
  27. return dtls1_write_bytes(s, type, buf_, len, written);
  28. }
  29. int dtls1_dispatch_alert(SSL *s)
  30. {
  31. int i, j;
  32. void (*cb) (const SSL *ssl, int type, int val) = NULL;
  33. unsigned char buf[DTLS1_AL_HEADER_LENGTH];
  34. unsigned char *ptr = &buf[0];
  35. size_t written;
  36. s->s3.alert_dispatch = 0;
  37. memset(buf, 0, sizeof(buf));
  38. *ptr++ = s->s3.send_alert[0];
  39. *ptr++ = s->s3.send_alert[1];
  40. i = do_dtls1_write(s, SSL3_RT_ALERT, &buf[0], sizeof(buf), 0, &written);
  41. if (i <= 0) {
  42. s->s3.alert_dispatch = 1;
  43. /* fprintf( stderr, "not done with alert\n" ); */
  44. } else {
  45. (void)BIO_flush(s->wbio);
  46. if (s->msg_callback)
  47. s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3.send_alert,
  48. 2, s, s->msg_callback_arg);
  49. if (s->info_callback != NULL)
  50. cb = s->info_callback;
  51. else if (s->ctx->info_callback != NULL)
  52. cb = s->ctx->info_callback;
  53. if (cb != NULL) {
  54. j = (s->s3.send_alert[0] << 8) | s->s3.send_alert[1];
  55. cb(s, SSL_CB_WRITE_ALERT, j);
  56. }
  57. }
  58. return i;
  59. }