diff options
author | Tomas Mraz <tomas@openssl.org> | 2022-11-11 16:18:48 +0100 |
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committer | Tomas Mraz <tomas@openssl.org> | 2023-02-08 16:20:55 +0100 |
commit | 25624c9087d5422c3bb93cd987a066cb7c883a16 (patch) | |
tree | ed3b762338f9a08a0fcccfbe09d32f18c5e15bb2 /include/internal/packet_quic.h | |
parent | 416a9286859d444e5a77bbdcc73f0c35b34e574b (diff) | |
download | openssl-new-25624c9087d5422c3bb93cd987a066cb7c883a16.tar.gz |
Rationalize FIPS sources
Avoid including QUIC related stuff in the FIPS sources.
Also avoid including libssl headers in ssl3_cbc.c.
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19658)
Diffstat (limited to 'include/internal/packet_quic.h')
-rw-r--r-- | include/internal/packet_quic.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/include/internal/packet_quic.h b/include/internal/packet_quic.h new file mode 100644 index 0000000000..447f75b81f --- /dev/null +++ b/include/internal/packet_quic.h @@ -0,0 +1,138 @@ +/* + * Copyright 2022 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 + */ + +#ifndef OSSL_INTERNAL_PACKET_QUIC_H +# define OSSL_INTERNAL_PACKET_QUIC_H +# pragma once + +# include "internal/packet.h" +# include "internal/quic_vlint.h" + +# ifndef OPENSSL_NO_QUIC +/* + * Decodes a QUIC variable-length integer in |pkt| and stores the result in + * |data|. + */ +__owur static ossl_inline int PACKET_get_quic_vlint(PACKET *pkt, + uint64_t *data) +{ + size_t enclen; + + if (PACKET_remaining(pkt) < 1) + return 0; + + enclen = ossl_quic_vlint_decode_len(*pkt->curr); + + if (PACKET_remaining(pkt) < enclen) + return 0; + + *data = ossl_quic_vlint_decode_unchecked(pkt->curr); + packet_forward(pkt, enclen); + return 1; +} + +/* + * Decodes a QUIC variable-length integer in |pkt| and stores the result in + * |data|. Unlike PACKET_get_quic_vlint, this does not advance the current + * position. + */ +__owur static ossl_inline int PACKET_peek_quic_vlint(PACKET *pkt, + uint64_t *data) +{ + size_t enclen; + + if (PACKET_remaining(pkt) < 1) + return 0; + + enclen = ossl_quic_vlint_decode_len(*pkt->curr); + + if (PACKET_remaining(pkt) < enclen) + return 0; + + *data = ossl_quic_vlint_decode_unchecked(pkt->curr); + return 1; +} + +/* + * Skips over a QUIC variable-length integer in |pkt| without decoding it. + */ +__owur static ossl_inline int PACKET_skip_quic_vlint(PACKET *pkt) +{ + size_t enclen; + + if (PACKET_remaining(pkt) < 1) + return 0; + + enclen = ossl_quic_vlint_decode_len(*pkt->curr); + + if (PACKET_remaining(pkt) < enclen) + return 0; + + packet_forward(pkt, enclen); + return 1; +} + +/* + * Reads a variable-length vector prefixed with a QUIC variable-length integer + * denoting the length, and stores the contents in |subpkt|. |pkt| can equal + * |subpkt|. Data is not copied: the |subpkt| packet will share its underlying + * buffer with the original |pkt|, so data wrapped by |pkt| must outlive the + * |subpkt|. Upon failure, the original |pkt| and |subpkt| are not modified. + */ +__owur static ossl_inline int PACKET_get_quic_length_prefixed(PACKET *pkt, + PACKET *subpkt) +{ + uint64_t length; + const unsigned char *data; + PACKET tmp = *pkt; + + if (!PACKET_get_quic_vlint(&tmp, &length) || + length > SIZE_MAX || + !PACKET_get_bytes(&tmp, &data, (size_t)length)) { + return 0; + } + + *pkt = tmp; + subpkt->curr = data; + subpkt->remaining = (size_t)length; + + return 1; +} + +/* + * Starts a QUIC sub-packet headed by a QUIC variable-length integer. A 4-byte + * representation is used. + */ +__owur int WPACKET_start_quic_sub_packet(WPACKET *pkt); + +/* + * Starts a QUIC sub-packet headed by a QUIC variable-length integer. max_len + * specifies the upper bound for the sub-packet size at the time the sub-packet + * is closed, which determines the encoding size for tthe variable-length + * integer header. max_len can be a precise figure or a worst-case bound + * if a precise figure is not available. + */ +__owur int WPACKET_start_quic_sub_packet_bound(WPACKET *pkt, size_t max_len); + +/* + * Allocates a QUIC sub-packet with exactly len bytes of payload, headed by a + * QUIC variable-length integer. The pointer to the payload buffer is output and + * must be filled by the caller. This function assures optimal selection of + * variable-length integer encoding length. + */ +__owur int WPACKET_quic_sub_allocate_bytes(WPACKET *pkt, size_t len, + unsigned char **bytes); + +/* + * Write a QUIC variable-length integer to the packet. + */ +__owur int WPACKET_quic_write_vlint(WPACKET *pkt, uint64_t v); + +# endif /* OPENSSL_NO_QUIC */ +#endif /* OSSL_INTERNAL_PACKET_QUIC_H */ |