зеркало из https://github.com/mozilla/gecko-dev.git
86 строки
2.0 KiB
C
86 строки
2.0 KiB
C
|
/* -*- 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/. */
|
||
|
|
|
||
|
|
#include "prnetdb.h"
|
||
|
|
#include "seccomon.h"
|
||
|
|
#include "secerr.h"
|
||
|
|
#include "ssl3encode.h"
|
||
|
|
|
||
|
|
SECStatus
|
||
|
|
ssl3_AppendToItem(SECItem *item, const unsigned char *buf, PRUint32 bytes)
|
||
|
|
{
|
||
|
|
if (bytes > item->len) {
|
||
|
|
PORT_SetError(SEC_ERROR_INVALID_ARGS);
|
||
|
|
return SECFailure;
|
||
|
|
}
|
||
|
|
|
||
|
|
PORT_Memcpy(item->data, buf, bytes);
|
||
|
|
item->data += bytes;
|
||
|
|
item->len -= bytes;
|
||
|
|
return SECSuccess;
|
||
|
|
}
|
||
|
|
|
||
|
|
SECStatus
|
||
|
|
ssl3_AppendNumberToItem(SECItem *item, PRUint32 num, PRInt32 lenSize)
|
||
|
|
{
|
||
|
|
SECStatus rv;
|
||
|
|
PRUint8 b[4];
|
||
|
|
|
||
|
|
ssl_EncodeUintX(num, lenSize, b);
|
||
|
|
rv = ssl3_AppendToItem(item, &b[0], lenSize);
|
||
|
|
return rv;
|
||
|
|
}
|
||
|
|
|
||
|
|
SECStatus
|
||
|
|
ssl3_ConsumeFromItem(SECItem *item, unsigned char **buf, PRUint32 bytes)
|
||
|
|
{
|
||
|
|
if (bytes > item->len) {
|
||
|
|
PORT_SetError(SEC_ERROR_BAD_DATA);
|
||
|
|
return SECFailure;
|
||
|
|
}
|
||
|
|
|
||
|
|
*buf = item->data;
|
||
|
|
item->data += bytes;
|
||
|
|
item->len -= bytes;
|
||
|
|
return SECSuccess;
|
||
|
|
}
|
||
|
|
|
||
|
|
SECStatus
|
||
|
|
ssl3_ConsumeNumberFromItem(SECItem *item, PRUint32 *num, PRUint32 bytes)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (bytes > item->len || bytes > sizeof(*num)) {
|
||
|
|
PORT_SetError(SEC_ERROR_BAD_DATA);
|
||
|
|
return SECFailure;
|
||
|
|
}
|
||
|
|
|
||
|
|
*num = 0;
|
||
|
|
for (i = 0; i < bytes; i++) {
|
||
|
|
*num = (*num << 8) + item->data[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
item->data += bytes;
|
||
|
|
item->len -= bytes;
|
||
|
|
|
||
|
|
return SECSuccess;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Helper function to encode an unsigned integer into a buffer. */
|
||
|
|
PRUint8 *
|
||
|
|
ssl_EncodeUintX(PRUint64 value, unsigned int bytes, PRUint8 *to)
|
||
|
|
{
|
||
|
|
PRUint64 encoded;
|
||
|
|
|
||
|
|
PORT_Assert(bytes > 0 && bytes <= sizeof(encoded));
|
||
|
|
|
||
|
|
encoded = PR_htonll(value);
|
||
|
|
memcpy(to, ((unsigned char *)(&encoded)) + (sizeof(encoded) - bytes), bytes);
|
||
|
|
return to + bytes;
|
||
|
|
}
|