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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is PRIVATE to SSL.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef __sslencode_h_
#define __sslencode_h_
/* A buffer object, used for assembling messages. */
typedef struct sslBufferStr {
PRUint8 *buf;
unsigned int len;
unsigned int space;
/* Set to true if the storage for the buffer is fixed, such as a stack
* variable or a view on another buffer. Growing a fixed buffer fails. */
PRBool fixed;
} sslBuffer;
#define SSL_BUFFER_EMPTY \
{ \
NULL, 0, 0, PR_FALSE \
}
#define SSL_BUFFER_FIXED(b, maxlen) \
{ \
b, 0, maxlen, PR_TRUE \
}
#define SSL_BUFFER_FIXED_LEN(b, len) \
{ \
b, len, 0, PR_TRUE \
}
#define SSL_BUFFER(b) SSL_BUFFER_FIXED(b, sizeof(b))
#define SSL_BUFFER_BASE(b) ((b)->buf)
#define SSL_BUFFER_LEN(b) ((b)->len)
#define SSL_BUFFER_NEXT(b) ((b)->buf + (b)->len)
#define SSL_BUFFER_SPACE(b) ((b)->space - (b)->len)
SECStatus sslBuffer_Grow(sslBuffer *b, unsigned int newLen);
SECStatus sslBuffer_Fill(sslBuffer *b, PRUint8 c, size_t len);
SECStatus sslBuffer_Append(sslBuffer *b, const void *data, unsigned int len);
SECStatus sslBuffer_AppendNumber(sslBuffer *b, PRUint64 v, unsigned int size);
SECStatus sslBuffer_AppendVariable(sslBuffer *b, const PRUint8 *data,
unsigned int len, unsigned int size);
SECStatus sslBuffer_AppendBuffer(sslBuffer *b, const sslBuffer *append);
SECStatus sslBuffer_AppendBufferVariable(sslBuffer *b, const sslBuffer *append,
unsigned int size);
SECStatus sslBuffer_Skip(sslBuffer *b, unsigned int size,
unsigned int *savedOffset);
SECStatus sslBuffer_InsertLength(sslBuffer *b, unsigned int at,
unsigned int size);
SECStatus sslBuffer_InsertNumber(sslBuffer *b, unsigned int at,
PRUint64 v, unsigned int size);
void sslBuffer_Clear(sslBuffer *b);
SECStatus ssl3_AppendHandshake(sslSocket *ss, const void *void_src,
unsigned int bytes);
SECStatus ssl3_AppendHandshakeSuppressHash(sslSocket *ss, const void *void_src,
unsigned int bytes);
SECStatus ssl3_AppendHandshakeHeader(sslSocket *ss,
SSLHandshakeType t, unsigned int length);
SECStatus ssl3_AppendHandshakeHeaderAndStashSeqNum(sslSocket *ss,
SSLHandshakeType t, unsigned int length, PRUint64 *b);
SECStatus ssl3_AppendHandshakeNumber(sslSocket *ss, PRUint64 num,
unsigned int lenSize);
SECStatus ssl3_AppendHandshakeNumberSuppressHash(sslSocket *ss, PRUint64 num,
unsigned int lenSize, PRBool suppressHash);
SECStatus ssl3_AppendHandshakeVariable(sslSocket *ss, const PRUint8 *src,
unsigned int bytes, unsigned int lenSize);
SECStatus ssl3_AppendBufferToHandshake(sslSocket *ss, sslBuffer *buf);
SECStatus ssl3_AppendBufferToHandshakeVariable(sslSocket *ss, sslBuffer *buf,
unsigned int lenSize);
SECStatus ssl3_CopyToSECItem(sslBuffer *b, SECItem *i);
typedef struct {
const PRUint8 *buf;
unsigned int len;
} sslReadBuffer;
typedef struct {
sslReadBuffer buf;
unsigned int offset;
} sslReader;
#define SSL_READER(b, l) \
{ \
{ b, l }, 0 \
}
#define SSL_READER_CURRENT(r) \
((r)->buf.buf + (r)->offset)
#define SSL_READER_REMAINING(r) \
((r)->buf.len - (r)->offset)
SECStatus sslRead_Read(sslReader *reader, unsigned int count,
sslReadBuffer *out);
SECStatus sslRead_ReadVariable(sslReader *reader, unsigned int sizeLen,
sslReadBuffer *out);
SECStatus sslRead_ReadNumber(sslReader *reader, unsigned int bytes,
PRUint64 *val);
/* Remove message_seq, fragment_offset and fragment_length values
* from the savedMessage buffer. Used for DTLS1.3 */
SECStatus ssl3_MaybeUpdateHashWithSavedRecord(sslSocket *ss);
#endif /* __sslencode_h_ */
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