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// Copyright (C) 2011 Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL ISC 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 <config.h>
#include <string>
#include <boost/lexical_cast.hpp>
#include <exceptions/exceptions.h>
#include <dns/name.h>
#include <dns/messagerenderer.h>
#include <dns/rdata.h>
#include <dns/rdataclass.h>
using namespace std;
using namespace boost;
using namespace isc::util;
// BEGIN_ISC_NAMESPACE
// BEGIN_RDATA_NAMESPACE
HINFO::HINFO(const string& hinfo_str) {
string::const_iterator input_iterator = hinfo_str.begin();
cpu_ = getNextCharacterString(hinfo_str, input_iterator);
skipLeftSpaces(hinfo_str, input_iterator);
os_ = getNextCharacterString(hinfo_str, input_iterator);
}
HINFO::HINFO(InputBuffer& buffer, size_t rdata_len) {
cpu_ = getNextCharacterString(buffer, rdata_len);
os_ = getNextCharacterString(buffer, rdata_len);
}
HINFO::HINFO(const HINFO& source):
Rdata(), cpu_(source.cpu_), os_(source.os_)
{
}
std::string
HINFO::toText() const {
string result;
result += "\"";
result += cpu_;
result += "\" \"";
result += os_;
result += "\"";
return result;
}
void
HINFO::toWire(OutputBuffer& buffer) const {
buffer.writeUint8(cpu_.size());
buffer.writeData(cpu_.c_str(), cpu_.size());
buffer.writeUint8(os_.size());
buffer.writeData(os_.c_str(), os_.size());
}
void
HINFO::toWire(AbstractMessageRenderer& renderer) const {
renderer.writeUint8(cpu_.size());
renderer.writeData(cpu_.c_str(), cpu_.size());
renderer.writeUint8(os_.size());
renderer.writeData(os_.c_str(), os_.size());
}
int
HINFO::compare(const Rdata& other) const {
const HINFO& other_hinfo = dynamic_cast<const HINFO&>(other);
if (cpu_ < other_hinfo.cpu_) {
return (-1);
} else if (cpu_ > other_hinfo.cpu_) {
return (1);
}
if (os_ < other_hinfo.os_) {
return (-1);
} else if (os_ > other_hinfo.os_) {
return (1);
}
return (0);
}
const std::string&
HINFO::getCPU() const {
return cpu_;
}
const std::string&
HINFO::getOS() const {
return os_;
}
void
HINFO::skipLeftSpaces(const std::string& input_str,
std::string::const_iterator& input_iterator)
{
if (input_iterator >= input_str.end()) {
isc_throw(InvalidRdataText,
"Invalid HINFO text format, field is missing.");
}
if (!isspace(*input_iterator)) {
isc_throw(InvalidRdataText,
"Invalid HINFO text format, fields are not separated by space.");
}
// Skip white spaces
while (input_iterator < input_str.end() && isspace(*input_iterator)) {
++input_iterator;
}
}
std::string
HINFO::getNextCharacterString(const std::string& input_str,
std::string::const_iterator& input_iterator)
{
string result;
// If the input string only contains white-spaces, it is an invalid
// <character-string>
if (input_iterator >= input_str.end()) {
isc_throw(InvalidRdataText, "Invalid HINFO text format, \
<character-string> field is missing.");
}
// Whether the <character-string> is separated with double quotes (")
bool quotes_separated = (*input_iterator == '"');
if (quotes_separated) {
++input_iterator;
}
while(input_iterator < input_str.end()){
if (quotes_separated) {
// If the <character-string> is seperated with quotes symbol and
// another quotes symbol is encountered, it is the end of the
// <character-string>
if (*input_iterator == '"') {
++input_iterator;
break;
}
} else if (*input_iterator == ' ') {
// If the <character-string> is not seperated with quotes symbol,
// it is seperated with <space> char
break;
}
result.push_back(*input_iterator);
++input_iterator;
}
if (result.size() > MAX_CHARSTRING_LEN) {
isc_throw(CharStringTooLong, "HINFO <character-string> is too long");
}
return (result);
}
std::string
HINFO::getNextCharacterString(InputBuffer& buffer, size_t len) {
uint8_t str_len = buffer.readUint8();
size_t pos = buffer.getPosition();
if (len - pos < str_len) {
isc_throw(InvalidRdataLength, "Invalid HINFO string length");
}
uint8_t buf[MAX_CHARSTRING_LEN];
buffer.readData(buf, str_len);
return (string(buf, buf + str_len));
}
// END_RDATA_NAMESPACE
// END_ISC_NAMESPACE
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