diff options
Diffstat (limited to 'security/nss/cpputil/databuffer.cc')
-rw-r--r-- | security/nss/cpputil/databuffer.cc | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/security/nss/cpputil/databuffer.cc b/security/nss/cpputil/databuffer.cc deleted file mode 100644 index d60ebccb3..000000000 --- a/security/nss/cpputil/databuffer.cc +++ /dev/null @@ -1,127 +0,0 @@ -/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/* vim: set ts=2 et sw=2 tw=80: */ -/* 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 "databuffer.h" -#include <algorithm> -#include <cassert> -#include <cstring> -#include <iomanip> -#include <iostream> -#if defined(WIN32) || defined(WIN64) -#include <winsock2.h> -#else -#include <arpa/inet.h> -#endif - -namespace nss_test { - -void DataBuffer::Assign(const uint8_t* data, size_t len) { - if (data) { - Allocate(len); - memcpy(static_cast<void*>(data_), static_cast<const void*>(data), len); - } else { - assert(len == 0); - data_ = nullptr; - len_ = 0; - } -} - -// Write will do a new allocation and expand the size of the buffer if needed. -// Returns the offset of the end of the write. -size_t DataBuffer::Write(size_t index, const uint8_t* val, size_t count) { - assert(val); - if (index + count > len_) { - size_t newlen = index + count; - uint8_t* tmp = new uint8_t[newlen]; // Always > 0. - if (data_) { - memcpy(static_cast<void*>(tmp), static_cast<const void*>(data_), len_); - } - if (index > len_) { - memset(static_cast<void*>(tmp + len_), 0, index - len_); - } - delete[] data_; - data_ = tmp; - len_ = newlen; - } - if (data_) { - memcpy(static_cast<void*>(data_ + index), static_cast<const void*>(val), - count); - } - return index + count; -} - -// Write an integer, also performing host-to-network order conversion. -// Returns the offset of the end of the write. -size_t DataBuffer::Write(size_t index, uint32_t val, size_t count) { - assert(count <= sizeof(uint32_t)); - uint32_t nvalue = htonl(val); - auto* addr = reinterpret_cast<const uint8_t*>(&nvalue); - return Write(index, addr + sizeof(uint32_t) - count, count); -} - -void DataBuffer::Splice(const uint8_t* ins, size_t ins_len, size_t index, - size_t remove) { - assert(ins); - uint8_t* old_value = data_; - size_t old_len = len_; - - // The amount of stuff remaining from the tail of the old. - size_t tail_len = old_len - (std::min)(old_len, index + remove); - // The new length: the head of the old, the new, and the tail of the old. - len_ = index + ins_len + tail_len; - data_ = new uint8_t[len_ ? len_ : 1]; - - // The head of the old. - if (old_value) { - Write(0, old_value, (std::min)(old_len, index)); - } - // Maybe a gap. - if (old_value && index > old_len) { - memset(old_value + index, 0, index - old_len); - } - // The new. - Write(index, ins, ins_len); - // The tail of the old. - if (tail_len > 0) { - Write(index + ins_len, old_value + index + remove, tail_len); - } - - delete[] old_value; -} - -// This can't use the same trick as Write(), since we might be reading from a -// smaller data source. -bool DataBuffer::Read(size_t index, size_t count, uint64_t* val) const { - assert(count <= sizeof(uint64_t)); - assert(val); - if ((index > len()) || (count > (len() - index))) { - return false; - } - *val = 0; - for (size_t i = 0; i < count; ++i) { - *val = (*val << 8) | data()[index + i]; - } - return true; -} - -bool DataBuffer::Read(size_t index, size_t count, uint32_t* val) const { - assert(count <= sizeof(uint32_t)); - uint64_t tmp; - - if (!Read(index, count, &tmp)) { - return false; - } - *val = tmp & 0xffffffff; - return true; -} - -size_t DataBuffer::logging_limit = 32; - -/* static */ void DataBuffer::SetLogLimit(size_t limit) { - DataBuffer::logging_limit = limit; -} - -} // namespace nss_test |