mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-09 10:18:26 -05:00
188 lines
4.0 KiB
C
Executable File
188 lines
4.0 KiB
C
Executable File
/* $OpenBSD: tls13_record.c,v 1.6 2020/05/11 18:08:11 jsing Exp $ */
|
|
/*
|
|
* Copyright (c) 2018, 2019 Joel Sing <jsing@openbsd.org>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include "ssl_locl.h"
|
|
|
|
#include "tls13_internal.h"
|
|
#include "tls13_record.h"
|
|
|
|
struct tls13_record {
|
|
uint16_t version;
|
|
uint8_t content_type;
|
|
size_t rec_len;
|
|
uint8_t *data;
|
|
size_t data_len;
|
|
CBS cbs;
|
|
|
|
struct tls13_buffer *buf;
|
|
};
|
|
|
|
struct tls13_record *
|
|
tls13_record_new(void)
|
|
{
|
|
struct tls13_record *rec = NULL;
|
|
|
|
if ((rec = calloc(1, sizeof(struct tls13_record))) == NULL)
|
|
goto err;
|
|
if ((rec->buf = tls13_buffer_new(TLS13_RECORD_MAX_LEN)) == NULL)
|
|
goto err;
|
|
|
|
return rec;
|
|
|
|
err:
|
|
tls13_record_free(rec);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
tls13_record_free(struct tls13_record *rec)
|
|
{
|
|
if (rec == NULL)
|
|
return;
|
|
|
|
tls13_buffer_free(rec->buf);
|
|
|
|
freezero(rec->data, rec->data_len);
|
|
freezero(rec, sizeof(struct tls13_record));
|
|
}
|
|
|
|
uint16_t
|
|
tls13_record_version(struct tls13_record *rec)
|
|
{
|
|
return rec->version;
|
|
}
|
|
|
|
uint8_t
|
|
tls13_record_content_type(struct tls13_record *rec)
|
|
{
|
|
return rec->content_type;
|
|
}
|
|
|
|
int
|
|
tls13_record_header(struct tls13_record *rec, CBS *cbs)
|
|
{
|
|
if (rec->data_len < TLS13_RECORD_HEADER_LEN)
|
|
return 0;
|
|
|
|
CBS_init(cbs, rec->data, TLS13_RECORD_HEADER_LEN);
|
|
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
tls13_record_content(struct tls13_record *rec, CBS *cbs)
|
|
{
|
|
CBS content;
|
|
|
|
tls13_record_data(rec, &content);
|
|
|
|
if (!CBS_skip(&content, TLS13_RECORD_HEADER_LEN))
|
|
return 0;
|
|
|
|
CBS_dup(&content, cbs);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
tls13_record_data(struct tls13_record *rec, CBS *cbs)
|
|
{
|
|
CBS_init(cbs, rec->data, rec->data_len);
|
|
}
|
|
|
|
int
|
|
tls13_record_set_data(struct tls13_record *rec, uint8_t *data, size_t data_len)
|
|
{
|
|
if (data_len > TLS13_RECORD_MAX_LEN)
|
|
return 0;
|
|
|
|
freezero(rec->data, rec->data_len);
|
|
rec->data = data;
|
|
rec->data_len = data_len;
|
|
CBS_init(&rec->cbs, rec->data, rec->data_len);
|
|
|
|
return 1;
|
|
}
|
|
|
|
ssize_t
|
|
tls13_record_recv(struct tls13_record *rec, tls13_read_cb wire_read,
|
|
void *wire_arg)
|
|
{
|
|
uint16_t rec_len, rec_version;
|
|
uint8_t content_type;
|
|
ssize_t ret;
|
|
CBS cbs;
|
|
|
|
if (rec->data != NULL)
|
|
return TLS13_IO_FAILURE;
|
|
|
|
if (rec->content_type == 0) {
|
|
if ((ret = tls13_buffer_extend(rec->buf,
|
|
TLS13_RECORD_HEADER_LEN, wire_read, wire_arg)) <= 0)
|
|
return ret;
|
|
|
|
tls13_buffer_cbs(rec->buf, &cbs);
|
|
|
|
if (!CBS_get_u8(&cbs, &content_type))
|
|
return TLS13_IO_FAILURE;
|
|
if (!CBS_get_u16(&cbs, &rec_version))
|
|
return TLS13_IO_FAILURE;
|
|
if (!CBS_get_u16(&cbs, &rec_len))
|
|
return TLS13_IO_FAILURE;
|
|
|
|
if ((rec_version >> 8) != SSL3_VERSION_MAJOR)
|
|
return TLS13_IO_RECORD_VERSION;
|
|
if (rec_len > TLS13_RECORD_MAX_CIPHERTEXT_LEN)
|
|
return TLS13_IO_RECORD_OVERFLOW;
|
|
|
|
rec->content_type = content_type;
|
|
rec->version = rec_version;
|
|
rec->rec_len = rec_len;
|
|
}
|
|
|
|
if ((ret = tls13_buffer_extend(rec->buf,
|
|
TLS13_RECORD_HEADER_LEN + rec->rec_len, wire_read, wire_arg)) <= 0)
|
|
return ret;
|
|
|
|
if (!tls13_buffer_finish(rec->buf, &rec->data, &rec->data_len))
|
|
return TLS13_IO_FAILURE;
|
|
|
|
return rec->data_len;
|
|
}
|
|
|
|
ssize_t
|
|
tls13_record_send(struct tls13_record *rec, tls13_write_cb wire_write,
|
|
void *wire_arg)
|
|
{
|
|
ssize_t ret;
|
|
|
|
if (rec->data == NULL)
|
|
return TLS13_IO_FAILURE;
|
|
|
|
while (CBS_len(&rec->cbs) > 0) {
|
|
if ((ret = wire_write(CBS_data(&rec->cbs),
|
|
CBS_len(&rec->cbs), wire_arg)) <= 0)
|
|
return ret;
|
|
|
|
if (!CBS_skip(&rec->cbs, ret))
|
|
return TLS13_IO_FAILURE;
|
|
}
|
|
|
|
return rec->data_len;
|
|
}
|