diff options
Diffstat (limited to 'ssl/record/ssl3_buffer.c')
| -rw-r--r-- | ssl/record/ssl3_buffer.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/ssl/record/ssl3_buffer.c b/ssl/record/ssl3_buffer.c deleted file mode 100644 index e769235fe0de..000000000000 --- a/ssl/record/ssl3_buffer.c +++ /dev/null @@ -1,197 +0,0 @@ -/* - * Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved. - * - * Licensed under the Apache License 2.0 (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 - */ - -#include "../ssl_local.h" -#include "record_local.h" - -void SSL3_BUFFER_set_data(SSL3_BUFFER *b, const unsigned char *d, size_t n) -{ - if (d != NULL) - memcpy(b->buf, d, n); - b->left = n; - b->offset = 0; -} - -/* - * Clear the contents of an SSL3_BUFFER but retain any memory allocated. Also - * retains the default_len setting - */ -void SSL3_BUFFER_clear(SSL3_BUFFER *b) -{ - b->offset = 0; - b->left = 0; -} - -void SSL3_BUFFER_release(SSL3_BUFFER *b) -{ - OPENSSL_free(b->buf); - b->buf = NULL; -} - -int ssl3_setup_read_buffer(SSL *s) -{ - unsigned char *p; - size_t len, align = 0, headerlen; - SSL3_BUFFER *b; - - b = RECORD_LAYER_get_rbuf(&s->rlayer); - - if (SSL_IS_DTLS(s)) - headerlen = DTLS1_RT_HEADER_LENGTH; - else - headerlen = SSL3_RT_HEADER_LENGTH; - -#if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0 - align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1); -#endif - - if (b->buf == NULL) { - len = SSL3_RT_MAX_PLAIN_LENGTH - + SSL3_RT_MAX_ENCRYPTED_OVERHEAD + headerlen + align; -#ifndef OPENSSL_NO_COMP - if (ssl_allow_compression(s)) - len += SSL3_RT_MAX_COMPRESSED_OVERHEAD; -#endif - - /* Ensure our buffer is large enough to support all our pipelines */ - if (s->max_pipelines > 1) - len *= s->max_pipelines; - - if (b->default_len > len) - len = b->default_len; - if ((p = OPENSSL_malloc(len)) == NULL) { - /* - * We've got a malloc failure, and we're still initialising buffers. - * We assume we're so doomed that we won't even be able to send an - * alert. - */ - SSLfatal(s, SSL_AD_NO_ALERT, ERR_R_MALLOC_FAILURE); - return 0; - } - b->buf = p; - b->len = len; - } - - return 1; -} - -int ssl3_setup_write_buffer(SSL *s, size_t numwpipes, size_t len) -{ - unsigned char *p; - size_t align = 0, headerlen; - SSL3_BUFFER *wb; - size_t currpipe; - - s->rlayer.numwpipes = numwpipes; - - if (len == 0) { - if (SSL_IS_DTLS(s)) - headerlen = DTLS1_RT_HEADER_LENGTH + 1; - else - headerlen = SSL3_RT_HEADER_LENGTH; - -#if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0 - align = SSL3_ALIGN_PAYLOAD - 1; -#endif - - len = ssl_get_max_send_fragment(s) - + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + headerlen + align - + SSL_RT_MAX_CIPHER_BLOCK_SIZE /* Explicit IV allowance */; -#ifndef OPENSSL_NO_COMP - if (ssl_allow_compression(s)) - len += SSL3_RT_MAX_COMPRESSED_OVERHEAD; -#endif - /* - * We don't need to add an allowance for eivlen here since empty - * fragments only occur when we don't have an explicit IV - */ - if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) - len += headerlen + align + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD; - } - - wb = RECORD_LAYER_get_wbuf(&s->rlayer); - for (currpipe = 0; currpipe < numwpipes; currpipe++) { - SSL3_BUFFER *thiswb = &wb[currpipe]; - - if (thiswb->len != len) { - OPENSSL_free(thiswb->buf); - thiswb->buf = NULL; /* force reallocation */ - } - - if (thiswb->buf == NULL) { - if (s->wbio == NULL || !BIO_get_ktls_send(s->wbio)) { - p = OPENSSL_malloc(len); - if (p == NULL) { - s->rlayer.numwpipes = currpipe; - /* - * We've got a malloc failure, and we're still initialising - * buffers. We assume we're so doomed that we won't even be able - * to send an alert. - */ - SSLfatal(s, SSL_AD_NO_ALERT, ERR_R_MALLOC_FAILURE); - return 0; - } - } else { - p = NULL; - } - memset(thiswb, 0, sizeof(SSL3_BUFFER)); - thiswb->buf = p; - thiswb->len = len; - } - } - - return 1; -} - -int ssl3_setup_buffers(SSL *s) -{ - if (!ssl3_setup_read_buffer(s)) { - /* SSLfatal() already called */ - return 0; - } - if (!ssl3_setup_write_buffer(s, 1, 0)) { - /* SSLfatal() already called */ - return 0; - } - return 1; -} - -int ssl3_release_write_buffer(SSL *s) -{ - SSL3_BUFFER *wb; - size_t pipes; - - pipes = s->rlayer.numwpipes; - while (pipes > 0) { - wb = &RECORD_LAYER_get_wbuf(&s->rlayer)[pipes - 1]; - - if (SSL3_BUFFER_is_app_buffer(wb)) - SSL3_BUFFER_set_app_buffer(wb, 0); - else - OPENSSL_free(wb->buf); - wb->buf = NULL; - pipes--; - } - s->rlayer.numwpipes = 0; - return 1; -} - -int ssl3_release_read_buffer(SSL *s) -{ - SSL3_BUFFER *b; - - b = RECORD_LAYER_get_rbuf(&s->rlayer); - if (s->options & SSL_OP_CLEANSE_PLAINTEXT) - OPENSSL_cleanse(b->buf, b->len); - OPENSSL_free(b->buf); - b->buf = NULL; - s->rlayer.packet = NULL; - s->rlayer.packet_length = 0; - return 1; -} |