149 lines
3.9 KiB
C++
Executable File
149 lines
3.9 KiB
C++
Executable File
/*
|
|
|
|
Copyright (c) 2003, Arvid Norberg
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the distribution.
|
|
* Neither the name of the author nor the names of its
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
#include <string>
|
|
#include <cassert>
|
|
#include <stdexcept>
|
|
#include <sstream>
|
|
#include <iomanip>
|
|
#include <cctype>
|
|
#include <algorithm>
|
|
|
|
namespace libtorrent
|
|
{
|
|
std::string unescape_string(std::string const& s)
|
|
{
|
|
std::string ret;
|
|
for (std::string::const_iterator i = s.begin(); i != s.end(); ++i)
|
|
{
|
|
if(*i == '+')
|
|
{
|
|
ret += ' ';
|
|
}
|
|
else if (*i != '%')
|
|
{
|
|
ret += *i;
|
|
}
|
|
else
|
|
{
|
|
++i;
|
|
if (i == s.end())
|
|
throw std::runtime_error("invalid escaped string");
|
|
|
|
int high;
|
|
if(*i >= '0' && *i <= '9') high = *i - '0';
|
|
else if(*i >= 'A' && *i <= 'F') high = *i + 10 - 'A';
|
|
else if(*i >= 'a' && *i <= 'f') high = *i + 10 - 'a';
|
|
else throw std::runtime_error("invalid escaped string");
|
|
|
|
++i;
|
|
if (i == s.end())
|
|
throw std::runtime_error("invalid escaped string");
|
|
|
|
int low;
|
|
if(*i >= '0' && *i <= '9') low = *i - '0';
|
|
else if(*i >= 'A' && *i <= 'F') low = *i + 10 - 'A';
|
|
else if(*i >= 'a' && *i <= 'f') low = *i + 10 - 'a';
|
|
else throw std::runtime_error("invalid escaped string");
|
|
|
|
ret += char(high * 16 + low);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
std::string escape_string(const char* str, int len)
|
|
{
|
|
assert(str != 0);
|
|
assert(len >= 0);
|
|
// http://www.ietf.org/rfc/rfc2396.txt
|
|
// section 2.3
|
|
// some trackers seems to require that ' is escaped
|
|
// static const char unreserved_chars[] = "-_.!~*'()";
|
|
static const char unreserved_chars[] = "-_.!~*()"
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
|
|
"0123456789";
|
|
|
|
std::stringstream ret;
|
|
ret << std::hex << std::setfill('0');
|
|
for (int i = 0; i < len; ++i)
|
|
{
|
|
if (std::count(
|
|
unreserved_chars
|
|
, unreserved_chars+sizeof(unreserved_chars)-1
|
|
, *str))
|
|
{
|
|
ret << *str;
|
|
}
|
|
else
|
|
{
|
|
ret << '%'
|
|
<< std::setw(2)
|
|
<< (int)static_cast<unsigned char>(*str);
|
|
}
|
|
++str;
|
|
}
|
|
return ret.str();
|
|
}
|
|
|
|
std::string escape_path(const char* str, int len)
|
|
{
|
|
assert(str != 0);
|
|
assert(len >= 0);
|
|
static const char unreserved_chars[] = "/-_.!~*()"
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
|
|
"0123456789";
|
|
|
|
std::stringstream ret;
|
|
ret << std::hex << std::setfill('0');
|
|
for (int i = 0; i < len; ++i)
|
|
{
|
|
if (std::count(
|
|
unreserved_chars
|
|
, unreserved_chars+sizeof(unreserved_chars)-1
|
|
, *str))
|
|
{
|
|
ret << *str;
|
|
}
|
|
else
|
|
{
|
|
ret << '%'
|
|
<< std::setw(2)
|
|
<< (int)static_cast<unsigned char>(*str);
|
|
}
|
|
++str;
|
|
}
|
|
return ret.str();
|
|
}
|
|
}
|