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231 lines (205 loc) · 6.07 KB
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//
// MessageHeader.cpp
//
// $Id: //poco/1.3/Net/src/MessageHeader.cpp#1 $
//
// Library: Net
// Package: Messages
// Module: MessageHeader
//
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/Net/MessageHeader.h"
#include "Poco/Net/NetException.h"
#include "Poco/String.h"
#include <ctype.h>
namespace Poco {
namespace Net {
MessageHeader::MessageHeader()
{
}
MessageHeader::MessageHeader(const MessageHeader& messageHeader):
NameValueCollection(messageHeader)
{
}
MessageHeader::~MessageHeader()
{
}
MessageHeader& MessageHeader::operator = (const MessageHeader& messageHeader)
{
NameValueCollection::operator = (messageHeader);
return *this;
}
void MessageHeader::write(std::ostream& ostr) const
{
NameValueCollection::ConstIterator it = begin();
while (it != end())
{
ostr << it->first << ": " << it->second << "\r\n";
++it;
}
}
void MessageHeader::read(std::istream& istr)
{
static const int eof = std::char_traits<char>::eof();
int ch = istr.get();
while (ch != eof && ch != '\r' && ch != '\n')
{
std::string name;
std::string value;
while (ch != eof && ch != ':' && ch != '\n' && name.length() < MAX_NAME_LENGTH) { name += ch; ch = istr.get(); }
if (ch == '\n') { ch = istr.get(); continue; } // ignore invalid header lines
if (ch != ':') throw MessageException("Field name too long/no colon found");
if (ch != eof) ch = istr.get(); // ':'
while (isspace(ch)) ch = istr.get();
while (ch != eof && ch != '\r' && ch != '\n' && value.length() < MAX_VALUE_LENGTH) { value += ch; ch = istr.get(); }
if (ch == '\r') ch = istr.get();
if (ch == '\n')
ch = istr.get();
else if (ch != eof)
throw MessageException("Field value too long/no CRLF found");
while (ch == ' ' || ch == '\t') // folding
{
while (ch != eof && ch != '\r' && ch != '\n' && value.length() < MAX_VALUE_LENGTH) { value += ch; ch = istr.get(); }
if (ch == '\r') ch = istr.get();
if (ch == '\n')
ch = istr.get();
else if (ch != eof)
throw MessageException("Folded field value too long/no CRLF found");
}
add(name, value);
}
istr.putback(ch);
}
void MessageHeader::splitElements(const std::string& s, std::vector<std::string>& elements, bool ignoreEmpty)
{
elements.clear();
std::string::const_iterator it = s.begin();
std::string::const_iterator end = s.end();
std::string elem;
while (it != end)
{
if (*it == '"')
{
elem += *it++;
while (it != end && *it != '"')
{
if (*it == '\\')
{
++it;
if (it != end) elem += *it++;
}
else elem += *it++;
}
if (it != end) elem += *it++;
}
else if (*it == '\\')
{
++it;
if (it != end) elem += *it++;
}
else if (*it == ',')
{
Poco::trimInPlace(elem);
if (!ignoreEmpty || !elem.empty())
elements.push_back(elem);
elem.clear();
++it;
}
else elem += *it++;
}
if (!elem.empty())
{
Poco::trimInPlace(elem);
if (!ignoreEmpty || !elem.empty())
elements.push_back(elem);
}
}
void MessageHeader::splitParameters(const std::string& s, std::string& value, NameValueCollection& parameters)
{
value.clear();
parameters.clear();
std::string::const_iterator it = s.begin();
std::string::const_iterator end = s.end();
while (it != end && isspace(*it)) ++it;
while (it != end && *it != ';') value += *it++;
Poco::trimRightInPlace(value);
if (it != end) ++it;
splitParameters(it, end, parameters);
}
void MessageHeader::splitParameters(const std::string::const_iterator& begin, const std::string::const_iterator& end, NameValueCollection& parameters)
{
std::string::const_iterator it = begin;
while (it != end)
{
std::string pname;
std::string pvalue;
while (it != end && isspace(*it)) ++it;
while (it != end && *it != '=' && *it != ';') pname += *it++;
Poco::trimRightInPlace(pname);
if (it != end && *it != ';') ++it;
while (it != end && isspace(*it)) ++it;
while (it != end && *it != ';')
{
if (*it == '"')
{
++it;
while (it != end && *it != '"')
{
if (*it == '\\')
{
++it;
if (it != end) pvalue += *it++;
}
else pvalue += *it++;
}
if (it != end) ++it;
}
else if (*it == '\\')
{
++it;
if (it != end) pvalue += *it++;
}
else pvalue += *it++;
}
Poco::trimRightInPlace(pvalue);
if (!pname.empty()) parameters.add(pname, pvalue);
if (it != end) ++it;
}
}
void MessageHeader::quote(const std::string& value, std::string& result, bool allowSpace)
{
bool mustQuote = false;
for (std::string::const_iterator it = value.begin(); !mustQuote && it != value.end(); ++it)
{
if (!isalnum(*it) && *it != '.' && *it != '_' && *it != '-' && !(isspace(*it) && allowSpace))
mustQuote = true;
}
if (mustQuote) result += '"';
result.append(value);
if (mustQuote) result += '"';
}
} } // namespace Poco::Net