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/*
* C++ ICAP library
* Copyright (C) 2012 Uditha Atukorala
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "header.h"
#include "util.h"
#include <algorithm>
#include <cstdlib>
namespace icap {
Header::Header() {
// initialise defaults
_encapsulated["req-hdr"] = -1;
_encapsulated["req-body"] = -1;
_encapsulated["res-hdr"] = -1;
_encapsulated["res-body"] = -1;
_encapsulated["opt-body"] = -1;
_encapsulated["null-body"] = -1;
}
Header::~Header() {}
const Header::headers_t &Header::headers() const throw() {
return _headers;
}
const std::string Header::value( const std::string &key ) throw() {
std::string value = "";
Header::headers_index_t idx = _headers.find( key );
if ( idx != _headers.end() ) {
value = idx->second;
}
return value;
}
const int Header::encapsulated_header( const std::string &entity ) throw() {
Header::encapsulated_header_index_t idx;
idx = _encapsulated.find( entity );
if ( idx == _encapsulated.end() ) {
return -1;
}
return idx->second;
}
void Header::attach( std::string key, std::string value ) throw() {
// trim
key = util::trim( key );
value = util::trim( value );
// check for 'Encapsulated' headers
if ( key == "Encapsulated" ) {
attach_encapsulated( value );
} else {
_headers[key] = value;
}
}
bool Header::attach_encapsulated( std::string header_value ) throw() {
std::vector<std::string> list_data;
std::vector<std::string> entity_data;
encapsulated_header_index_t idx;
bool r_status = true;
// grab the entity list [ req-hdr=0, null-body=170 ]
list_data = util::split( util::trim( header_value ), "," );
for ( size_t i = 0; i < list_data.size(); i++ ) {
// get entity data [ req-hdr=0 ]
entity_data = util::split( util::trim( list_data.at( i ) ), "=" );
if ( entity_data.size() == 2 ) {
idx = _encapsulated.find( util::trim( entity_data.at( 0 ) ) );
if ( idx != _encapsulated.end() ) {
idx->second = atoi( util::trim( entity_data.at( 1 ) ).c_str() );
}
} else {
r_status = false;
}
}
return r_status;
}
bool Header::remove( std::string key ) throw() {
return ( (bool) _headers.erase( util::trim( key ) ) );
}
const std::string Header::encapsulated_header_str() throw() {
/*
* Encapsulated request header grammer:
* REQMOD request encapsulated_list: [reqhdr] reqbody
* REQMOD response encapsulated_list: {[reqhdr] reqbody} |
* {[reshdr] resbody}
* RESPMOD request encapsulated_list: [reqhdr] [reshdr] resbody
* RESPMOD response encapsulated_list: [reshdr] resbody
* OPTIONS response encapsulated_list: optbody
*/
std::string encaps_header = "";
for ( auto& idx : sort_encapsulated_header() ) {
if ( idx.second >= 0 ) {
if ( encaps_header != "" ) {
encaps_header.append( ", " );
}
encaps_header.append( idx.first ).append( "=" ).append( util::itoa( idx.second ) );
}
}
// sanity check
if ( encaps_header == "" ) {
encaps_header = "null-body=0";
}
return encaps_header;
}
void Header::update_encapsulated( const payload_t &payload ) throw() {
unsigned int data_length = 0;
unsigned int data_offset = 0;
// request header
if ( payload.req_header.size() > 0 ) {
_encapsulated["req-hdr"] = data_length;
data_offset = data_length;
data_length += payload.req_header.size();
}
// request body (POST data)
if ( payload.req_body.size() > 0 ) {
_encapsulated["req-body"] = data_length;
data_offset = data_length;
data_length += payload.req_body.size();
}
// response header
if ( payload.res_header.size() > 0 ) {
_encapsulated["res-hdr"] = data_length;
data_offset = data_length;
data_length += payload.res_header.size();
}
// response body
if ( payload.res_body.size() > 0 ) {
_encapsulated["res-body"] = data_length;
data_offset = data_length;
data_length += payload.res_body.size();
}
// null-body
if ( data_offset == 0 ) {
_encapsulated["null-body"] = data_length;
}
}
std::vector<Header::encapsulated_header_data_t> Header::sort_encapsulated_header() {
std::vector<Header::encapsulated_header_data_t> data( _encapsulated.begin(), _encapsulated.end() );
std::sort(data.begin(), data.end(), encapsulated_header_compare());
return data;
}
}
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