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-rw-r--r--ssl/packet.c424
1 files changed, 0 insertions, 424 deletions
diff --git a/ssl/packet.c b/ssl/packet.c
deleted file mode 100644
index d6357495f53e..000000000000
--- a/ssl/packet.c
+++ /dev/null
@@ -1,424 +0,0 @@
-/*
- * Copyright 2015-2022 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
- */
-
-#include "internal/cryptlib.h"
-#include "packet_local.h"
-#include <openssl/sslerr.h>
-
-#define DEFAULT_BUF_SIZE 256
-
-int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
-{
- if (!WPACKET_reserve_bytes(pkt, len, allocbytes))
- return 0;
-
- pkt->written += len;
- pkt->curr += len;
- return 1;
-}
-
-int WPACKET_sub_allocate_bytes__(WPACKET *pkt, size_t len,
- unsigned char **allocbytes, size_t lenbytes)
-{
- if (!WPACKET_start_sub_packet_len__(pkt, lenbytes)
- || !WPACKET_allocate_bytes(pkt, len, allocbytes)
- || !WPACKET_close(pkt))
- return 0;
-
- return 1;
-}
-
-#define GETBUF(p) (((p)->staticbuf != NULL) \
- ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
-
-int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
-{
- /* Internal API, so should not fail */
- if (!ossl_assert(pkt->subs != NULL && len != 0))
- return 0;
-
- if (pkt->maxsize - pkt->written < len)
- return 0;
-
- if (pkt->staticbuf == NULL && (pkt->buf->length - pkt->written < len)) {
- size_t newlen;
- size_t reflen;
-
- reflen = (len > pkt->buf->length) ? len : pkt->buf->length;
-
- if (reflen > SIZE_MAX / 2) {
- newlen = SIZE_MAX;
- } else {
- newlen = reflen * 2;
- if (newlen < DEFAULT_BUF_SIZE)
- newlen = DEFAULT_BUF_SIZE;
- }
- if (BUF_MEM_grow(pkt->buf, newlen) == 0)
- return 0;
- }
- if (allocbytes != NULL)
- *allocbytes = WPACKET_get_curr(pkt);
-
- return 1;
-}
-
-int WPACKET_sub_reserve_bytes__(WPACKET *pkt, size_t len,
- unsigned char **allocbytes, size_t lenbytes)
-{
- if (!WPACKET_reserve_bytes(pkt, lenbytes + len, allocbytes))
- return 0;
-
- *allocbytes += lenbytes;
-
- return 1;
-}
-
-static size_t maxmaxsize(size_t lenbytes)
-{
- if (lenbytes >= sizeof(size_t) || lenbytes == 0)
- return SIZE_MAX;
-
- return ((size_t)1 << (lenbytes * 8)) - 1 + lenbytes;
-}
-
-static int wpacket_intern_init_len(WPACKET *pkt, size_t lenbytes)
-{
- unsigned char *lenchars;
-
- pkt->curr = 0;
- pkt->written = 0;
-
- if ((pkt->subs = OPENSSL_zalloc(sizeof(*pkt->subs))) == NULL) {
- SSLerr(SSL_F_WPACKET_INTERN_INIT_LEN, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- if (lenbytes == 0)
- return 1;
-
- pkt->subs->pwritten = lenbytes;
- pkt->subs->lenbytes = lenbytes;
-
- if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars)) {
- OPENSSL_free(pkt->subs);
- pkt->subs = NULL;
- return 0;
- }
- pkt->subs->packet_len = lenchars - GETBUF(pkt);
-
- return 1;
-}
-
-int WPACKET_init_static_len(WPACKET *pkt, unsigned char *buf, size_t len,
- size_t lenbytes)
-{
- size_t max = maxmaxsize(lenbytes);
-
- /* Internal API, so should not fail */
- if (!ossl_assert(buf != NULL && len > 0))
- return 0;
-
- pkt->staticbuf = buf;
- pkt->buf = NULL;
- pkt->maxsize = (max < len) ? max : len;
-
- return wpacket_intern_init_len(pkt, lenbytes);
-}
-
-int WPACKET_init_len(WPACKET *pkt, BUF_MEM *buf, size_t lenbytes)
-{
- /* Internal API, so should not fail */
- if (!ossl_assert(buf != NULL))
- return 0;
-
- pkt->staticbuf = NULL;
- pkt->buf = buf;
- pkt->maxsize = maxmaxsize(lenbytes);
-
- return wpacket_intern_init_len(pkt, lenbytes);
-}
-
-int WPACKET_init(WPACKET *pkt, BUF_MEM *buf)
-{
- return WPACKET_init_len(pkt, buf, 0);
-}
-
-int WPACKET_set_flags(WPACKET *pkt, unsigned int flags)
-{
- /* Internal API, so should not fail */
- if (!ossl_assert(pkt->subs != NULL))
- return 0;
-
- pkt->subs->flags = flags;
-
- return 1;
-}
-
-/* Store the |value| of length |len| at location |data| */
-static int put_value(unsigned char *data, uint64_t value, size_t len)
-{
- for (data += len - 1; len > 0; len--) {
- *data = (unsigned char)(value & 0xff);
- data--;
- value >>= 8;
- }
-
- /* Check whether we could fit the value in the assigned number of bytes */
- if (value > 0)
- return 0;
-
- return 1;
-}
-
-
-/*
- * Internal helper function used by WPACKET_close(), WPACKET_finish() and
- * WPACKET_fill_lengths() to close a sub-packet and write out its length if
- * necessary. If |doclose| is 0 then it goes through the motions of closing
- * (i.e. it fills in all the lengths), but doesn't actually close anything.
- */
-static int wpacket_intern_close(WPACKET *pkt, WPACKET_SUB *sub, int doclose)
-{
- size_t packlen = pkt->written - sub->pwritten;
-
- if (packlen == 0
- && (sub->flags & WPACKET_FLAGS_NON_ZERO_LENGTH) != 0)
- return 0;
-
- if (packlen == 0
- && sub->flags & WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH) {
- /* We can't handle this case. Return an error */
- if (!doclose)
- return 0;
-
- /* Deallocate any bytes allocated for the length of the WPACKET */
- if ((pkt->curr - sub->lenbytes) == sub->packet_len) {
- pkt->written -= sub->lenbytes;
- pkt->curr -= sub->lenbytes;
- }
-
- /* Don't write out the packet length */
- sub->packet_len = 0;
- sub->lenbytes = 0;
- }
-
- /* Write out the WPACKET length if needed */
- if (sub->lenbytes > 0
- && !put_value(&GETBUF(pkt)[sub->packet_len], packlen,
- sub->lenbytes))
- return 0;
-
- if (doclose) {
- pkt->subs = sub->parent;
- OPENSSL_free(sub);
- }
-
- return 1;
-}
-
-int WPACKET_fill_lengths(WPACKET *pkt)
-{
- WPACKET_SUB *sub;
-
- if (!ossl_assert(pkt->subs != NULL))
- return 0;
-
- for (sub = pkt->subs; sub != NULL; sub = sub->parent) {
- if (!wpacket_intern_close(pkt, sub, 0))
- return 0;
- }
-
- return 1;
-}
-
-int WPACKET_close(WPACKET *pkt)
-{
- /*
- * Internal API, so should not fail - but we do negative testing of this
- * so no assert (otherwise the tests fail)
- */
- if (pkt->subs == NULL || pkt->subs->parent == NULL)
- return 0;
-
- return wpacket_intern_close(pkt, pkt->subs, 1);
-}
-
-int WPACKET_finish(WPACKET *pkt)
-{
- int ret;
-
- /*
- * Internal API, so should not fail - but we do negative testing of this
- * so no assert (otherwise the tests fail)
- */
- if (pkt->subs == NULL || pkt->subs->parent != NULL)
- return 0;
-
- ret = wpacket_intern_close(pkt, pkt->subs, 1);
- if (ret) {
- OPENSSL_free(pkt->subs);
- pkt->subs = NULL;
- }
-
- return ret;
-}
-
-int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
-{
- WPACKET_SUB *sub;
- unsigned char *lenchars;
-
- /* Internal API, so should not fail */
- if (!ossl_assert(pkt->subs != NULL))
- return 0;
-
- if ((sub = OPENSSL_zalloc(sizeof(*sub))) == NULL) {
- SSLerr(SSL_F_WPACKET_START_SUB_PACKET_LEN__, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- sub->parent = pkt->subs;
- pkt->subs = sub;
- sub->pwritten = pkt->written + lenbytes;
- sub->lenbytes = lenbytes;
-
- if (lenbytes == 0) {
- sub->packet_len = 0;
- return 1;
- }
-
- if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars))
- return 0;
- /* Convert to an offset in case the underlying BUF_MEM gets realloc'd */
- sub->packet_len = lenchars - GETBUF(pkt);
-
- return 1;
-}
-
-int WPACKET_start_sub_packet(WPACKET *pkt)
-{
- return WPACKET_start_sub_packet_len__(pkt, 0);
-}
-
-int WPACKET_put_bytes__(WPACKET *pkt, uint64_t val, size_t size)
-{
- unsigned char *data;
-
- /* Internal API, so should not fail */
- if (!ossl_assert(size <= sizeof(uint64_t))
- || !WPACKET_allocate_bytes(pkt, size, &data)
- || !put_value(data, val, size))
- return 0;
-
- return 1;
-}
-
-int WPACKET_set_max_size(WPACKET *pkt, size_t maxsize)
-{
- WPACKET_SUB *sub;
- size_t lenbytes;
-
- /* Internal API, so should not fail */
- if (!ossl_assert(pkt->subs != NULL))
- return 0;
-
- /* Find the WPACKET_SUB for the top level */
- for (sub = pkt->subs; sub->parent != NULL; sub = sub->parent)
- continue;
-
- lenbytes = sub->lenbytes;
- if (lenbytes == 0)
- lenbytes = sizeof(pkt->maxsize);
-
- if (maxmaxsize(lenbytes) < maxsize || maxsize < pkt->written)
- return 0;
-
- pkt->maxsize = maxsize;
-
- return 1;
-}
-
-int WPACKET_memset(WPACKET *pkt, int ch, size_t len)
-{
- unsigned char *dest;
-
- if (len == 0)
- return 1;
-
- if (!WPACKET_allocate_bytes(pkt, len, &dest))
- return 0;
-
- memset(dest, ch, len);
-
- return 1;
-}
-
-int WPACKET_memcpy(WPACKET *pkt, const void *src, size_t len)
-{
- unsigned char *dest;
-
- if (len == 0)
- return 1;
-
- if (!WPACKET_allocate_bytes(pkt, len, &dest))
- return 0;
-
- memcpy(dest, src, len);
-
- return 1;
-}
-
-int WPACKET_sub_memcpy__(WPACKET *pkt, const void *src, size_t len,
- size_t lenbytes)
-{
- if (!WPACKET_start_sub_packet_len__(pkt, lenbytes)
- || !WPACKET_memcpy(pkt, src, len)
- || !WPACKET_close(pkt))
- return 0;
-
- return 1;
-}
-
-int WPACKET_get_total_written(WPACKET *pkt, size_t *written)
-{
- /* Internal API, so should not fail */
- if (!ossl_assert(written != NULL))
- return 0;
-
- *written = pkt->written;
-
- return 1;
-}
-
-int WPACKET_get_length(WPACKET *pkt, size_t *len)
-{
- /* Internal API, so should not fail */
- if (!ossl_assert(pkt->subs != NULL && len != NULL))
- return 0;
-
- *len = pkt->written - pkt->subs->pwritten;
-
- return 1;
-}
-
-unsigned char *WPACKET_get_curr(WPACKET *pkt)
-{
- return GETBUF(pkt) + pkt->curr;
-}
-
-void WPACKET_cleanup(WPACKET *pkt)
-{
- WPACKET_SUB *sub, *parent;
-
- for (sub = pkt->subs; sub != NULL; sub = parent) {
- parent = sub->parent;
- OPENSSL_free(sub);
- }
- pkt->subs = NULL;
-}
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