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/*
* Copyright (C) 2003 Tommi Maekitalo
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <tnt/messageheader.h>
#include <tnt/messageheaderparser.h>
#include <cxxtools/log.h>
#include <stdexcept>
#include <tnt/stringlessignorecase.h>
#include <cstring>
namespace tnt
{
log_define("tntnet.messageheader")
const unsigned Messageheader::MAXHEADERSIZE;
bool Messageheader::compareHeader(const char* key, const char* value) const
{
const_iterator it = find(key);
return it == end() ? false
: tnt::StringCompareIgnoreCase<const char*>(it->second, value) == 0;
}
void Messageheader::removeHeader(const char* key)
{
if (!*key)
throw std::runtime_error("empty key not allowed in messageheader");
char* p = getEnd();
const_iterator it = begin();
while (it != end())
{
if (StringCompareIgnoreCase<const char*>(key, it->first) == 0)
{
unsigned slen = it->second - it->first + std::strlen(it->second) + 1;
std::memmove(
const_cast<char*>(it->first),
it->first + slen,
p - it->first + slen);
p -= slen;
it.fixup();
}
else
++it;
}
_endOffset = p - _rawdata;
}
Messageheader::const_iterator Messageheader::find(const char* key) const
{
for (const_iterator it = begin(); it != end(); ++it)
{
if (StringCompareIgnoreCase<const char*>(key, it->first) == 0)
return it;
}
return end();
}
void Messageheader::clear()
{
#ifdef DEBUG
std::memset(_rawdata, '\xfe', sizeof(_rawdata));
#endif
_rawdata[0] = _rawdata[1] = '\0';
_endOffset = 0;
}
void Messageheader::setHeader(const char* key, const char* value, bool replace)
{
if (!*key)
throw std::runtime_error("empty key not allowed in messageheader");
if (replace)
removeHeader(key);
char* p = getEnd();
size_t lk = std::strlen(key); // length of key
size_t lk2 = key[lk-1] == ':' ? lk + 1 : lk + 2; // length of key including trailing ':' and terminator
size_t lv = std::strlen(value); // length of value
if (p - _rawdata + lk2 + lv + 3 > MAXHEADERSIZE)
throw std::runtime_error("message header too big");
std::strcpy(p, key); // copy key
p += lk2;
*(p - 2) = ':'; // make sure, key is prepended by ':'
*(p - 1) = '\0';
std::strcpy(p, value); // copy value
p[lv + 1] = '\0'; // put new message end marker in place
_endOffset = (p + lv + 1) - _rawdata;
}
Messageheader::return_type Messageheader::onField(const char* name, const char* value)
{
log_debug(name << ' ' << value);
return OK;
}
std::istream& operator>> (std::istream& in, Messageheader& data)
{
Messageheader::Parser p(data);
p.parse(in);
return in;
}
}
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