diff options
Diffstat (limited to 'openssl-1.1.0h/ssl/s3_msg.c')
-rw-r--r-- | openssl-1.1.0h/ssl/s3_msg.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/openssl-1.1.0h/ssl/s3_msg.c b/openssl-1.1.0h/ssl/s3_msg.c new file mode 100644 index 0000000..4961cc8 --- /dev/null +++ b/openssl-1.1.0h/ssl/s3_msg.c @@ -0,0 +1,102 @@ +/* + * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#define USE_SOCKETS +#include "ssl_locl.h" + +int ssl3_do_change_cipher_spec(SSL *s) +{ + int i; + + if (s->server) + i = SSL3_CHANGE_CIPHER_SERVER_READ; + else + i = SSL3_CHANGE_CIPHER_CLIENT_READ; + + if (s->s3->tmp.key_block == NULL) { + if (s->session == NULL || s->session->master_key_length == 0) { + /* might happen if dtls1_read_bytes() calls this */ + SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC, SSL_R_CCS_RECEIVED_EARLY); + return (0); + } + + s->session->cipher = s->s3->tmp.new_cipher; + if (!s->method->ssl3_enc->setup_key_block(s)) + return (0); + } + + if (!s->method->ssl3_enc->change_cipher_state(s, i)) + return (0); + + return 1; +} + +int ssl3_send_alert(SSL *s, int level, int desc) +{ + /* Map tls/ssl alert value to correct one */ + desc = s->method->ssl3_enc->alert_value(desc); + if (s->version == SSL3_VERSION && desc == SSL_AD_PROTOCOL_VERSION) + desc = SSL_AD_HANDSHAKE_FAILURE; /* SSL 3.0 does not have + * protocol_version alerts */ + if (desc < 0) + return -1; + /* If a fatal one, remove from cache */ + if ((level == SSL3_AL_FATAL) && (s->session != NULL)) + SSL_CTX_remove_session(s->session_ctx, s->session); + + s->s3->alert_dispatch = 1; + s->s3->send_alert[0] = level; + s->s3->send_alert[1] = desc; + if (!RECORD_LAYER_write_pending(&s->rlayer)) { + /* data still being written out? */ + return s->method->ssl_dispatch_alert(s); + } + /* + * else data is still being written out, we will get written some time in + * the future + */ + return -1; +} + +int ssl3_dispatch_alert(SSL *s) +{ + int i, j; + unsigned int alertlen; + void (*cb) (const SSL *ssl, int type, int val) = NULL; + + s->s3->alert_dispatch = 0; + alertlen = 2; + i = do_ssl3_write(s, SSL3_RT_ALERT, &s->s3->send_alert[0], &alertlen, 1, 0); + if (i <= 0) { + s->s3->alert_dispatch = 1; + } else { + /* + * Alert sent to BIO. If it is important, flush it now. If the + * message does not get sent due to non-blocking IO, we will not + * worry too much. + */ + if (s->s3->send_alert[0] == SSL3_AL_FATAL) + (void)BIO_flush(s->wbio); + + if (s->msg_callback) + s->msg_callback(1, s->version, SSL3_RT_ALERT, s->s3->send_alert, + 2, s, s->msg_callback_arg); + + if (s->info_callback != NULL) + cb = s->info_callback; + else if (s->ctx->info_callback != NULL) + cb = s->ctx->info_callback; + + if (cb != NULL) { + j = (s->s3->send_alert[0] << 8) | s->s3->send_alert[1]; + cb(s, SSL_CB_WRITE_ALERT, j); + } + } + return (i); +} |