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// file : web/apache/request.ixx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
// license : MIT; see accompanying LICENSE file
#include <strings.h> // strcasecmp()
#include <iomanip>
#include <sstream>
#include <cstring>
#include <cstdlib>
namespace web
{
namespace apache
{
inline int request::
flush ()
{
if (buffer_ && out_buf_)
{
auto b = dynamic_cast<std::stringbuf*> (out_buf_.get ());
assert (b);
std::string s (b->str ());
if (!s.empty ())
{
// Before writing response read and discard request body if any.
//
int r = ap_discard_request_body (rec_);
if (r == OK)
{
set_write_state ();
if (ap_rwrite (s.c_str (), s.length (), rec_) < 0)
rec_->status = HTTP_REQUEST_TIME_OUT;
}
else
rec_->status = r;
}
out_.reset ();
out_buf_.reset ();
}
return rec_->status == HTTP_OK || get_write_state () ? OK : rec_->status;
}
inline const request::string_ptr& request::
form_data ()
{
if (!form_data_)
{
form_data_.reset (new std::string ());
const char *ct = apr_table_get (rec_->headers_in, "Content-Type");
if (ct && !strncasecmp ("application/x-www-form-urlencoded", ct, 33))
{
std::istream& istr (content ());
std::getline (istr, *form_data_);
// Make request data still be available.
//
std::unique_ptr<std::streambuf> in_buf (
new std::stringbuf (*form_data_));
in_.reset (new std::istream (in_buf.get ()));
in_buf_ = std::move (in_buf);
in_->exceptions (std::ios::failbit | std::ios::badbit);
}
}
return form_data_;
}
inline void request::
parse_parameters (const char* args)
{
for (auto n (args); n != 0; )
{
const char* v = std::strchr (n, '=');
const char* e = ::strchr (n, '&');
if (e && e < v)
v = 0;
std::string name (v
? mime_url_decode (n, v) :
(e
? mime_url_decode (n, e)
: mime_url_decode (n, n + std::strlen (n))));
std::string value;
if (v++)
{
value = e
? mime_url_decode (v, e)
: mime_url_decode (v, v + std::strlen (v));
}
if (!name.empty () || !value.empty ())
parameters_->emplace_back (std::move (name), std::move (value));
n = e ? e + 1 : 0;
}
}
inline void request::
mime_url_encode (const char* v, std::ostream& o)
{
char f = o.fill ();
std::ios_base::fmtflags g = o.flags ();
o << std::hex << std::uppercase << std::right << std::setfill ('0');
char c;
while ((c = *v++) != '\0')
{
if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') ||
(c >= '0' && c <= '9'))
{
o << c;
}
else
switch (c)
{
case ' ': o << '+'; break;
case '.':
case '_':
case '-':
case '~': o << c; break;
default:
{
o << "%" << std::setw (2) << static_cast<unsigned short> (c);
break;
}
}
}
o.flags (g);
o.fill (f);
}
inline std::string request::
mime_url_decode (const char* b, const char* e, bool trim)
{
if (trim)
{
b += std::strspn (b, " ");
if (b >= e)
return std::string ();
while (*--e == ' ');
++e;
}
std::string value;
value.reserve (e - b);
char bf[3];
bf[2] = '\0';
while (b != e)
{
char c = *b++;
switch (c)
{
case '+':
{
value.append (" ");
break;
}
case '%':
{
if (*b == '\0' || b[1] == '\0')
{
throw std::invalid_argument (
"::web::apache::request::mime_url_decode short");
}
*bf = *b;
bf[1] = b[1];
char* ebf = 0;
size_t vl = std::strtoul (bf, &ebf, 16);
if (*ebf != '\0')
{
throw std::invalid_argument (
"::web::apache::request::mime_url_decode wrong");
}
value.append (1, static_cast<char> (vl));
b += 2;
break;
}
default:
{
value.append (1, c);
break;
}
}
}
return value;
}
}
}
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