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/*
* rfc4251.C -- support for name-list type from RFC 4251, section 5
*
* These are the conversions between an rfc4251string containing a name-list
* and vector<string>.
*
* Copyright (C) 2013 Timo Weingärtner <timo@tiwe.de>
*
* This file is part of ssh-agent-filter.
*
* ssh-agent-filter is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* ssh-agent-filter 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with ssh-agent-filter. If not, see <http://www.gnu.org/licenses/>.
*/
#include "rfc4251.h"
rfc4251string::rfc4251string (std::vector<std::string> const & v) {
for (auto it = v.begin(); it != v.end();) {
if (it->size() == 0)
throw std::length_error{"name of zero length"};
if (value.size() + it->size() > std::numeric_limits<uint32_t>::max())
throw std::length_error{"32-bit limit for rfc4251string exceeded"};
value.insert(value.end(), it->data(), it->data() + it->size());
++it;
if (it == v.end())
break;
value.push_back(',');
}
}
rfc4251string::operator std::vector<std::string> () const {
std::vector<std::string> ret;
auto name_start = value.begin();
if (name_start != value.end())
for (auto it = name_start; ; ++it) {
if (it == value.end() or *it == ',') {
if (it == name_start)
throw std::length_error{"name of zero length"};
ret.emplace_back(name_start, it);
name_start = it + 1;
}
if (it == value.end())
break;
}
return ret;
}
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