tls_parser.cc
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/* -*- 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 "tls_parser.h"
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namespace nss_test {
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bool TlsParser::Read(uint8_t* val) {
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if (remaining() < 1) {
return false;
}
*val = *ptr();
consume(1);
return true;
}
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bool TlsParser::Read(uint32_t* val, size_t size) {
if (size > sizeof(uint32_t)) {
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return false;
}
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uint32_t v = 0;
for (size_t i = 0; i < size; ++i) {
uint8_t tmp;
if (!Read(&tmp)) {
return false;
}
v = (v << 8) | tmp;
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return true;
}
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bool TlsParser::Read(DataBuffer* val, size_t len) {
if (remaining() < len) {
return false;
}
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val->Assign(ptr(), len);
consume(len);
return true;
}
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bool TlsParser::ReadFromMark(DataBuffer* val, size_t len, size_t mark) {
auto saved = offset_;
offset_ = mark;
if (remaining() < len) {
offset_ = saved;
return false;
}
val->Assign(ptr(), len);
offset_ = saved;
return true;
}
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bool TlsParser::ReadVariable(DataBuffer* val, size_t len_size) {
uint32_t len;
if (!Read(&len, len_size)) {
return false;
}
return Read(val, len);
}
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bool TlsParser::Skip(size_t len) {
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if (len > remaining()) {
return false;
}
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consume(len);
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return true;
}
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bool TlsParser::SkipVariable(size_t len_size) {
uint32_t len;
if (!Read(&len, len_size)) {
return false;
}
return Skip(len);
}
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} // namespace nss_test