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#include "cgiRequestBase.h"
#include "xwwwFormUrlEncoded.h"
#include <boost/algorithm/string/case_conv.hpp>
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include <util.h>
#include <slicer/modelPartsTypes.h>
#include <slicer/common.h>
#include <formatters.h>
namespace ba = boost::algorithm;
using namespace std::literals;
#define CGI_CONST(NAME) static const std::string_view NAME(#NAME)
namespace IceSpider {
static const std::string_view amp("&");
static const std::string_view semi("; ");
static const std::string_view HEADER_PREFIX("HTTP_");
CGI_CONST(REDIRECT_URL);
CGI_CONST(SCRIPT_NAME);
CGI_CONST(QUERY_STRING);
CGI_CONST(HTTP_COOKIE);
CGI_CONST(REQUEST_METHOD);
CgiRequestBase::CgiRequestBase(Core * c, const char * const * const env) :
IHttpRequest(c)
{
for(const char * const * e = env; *e; ++e) {
addenv(*e);
}
}
void
CgiRequestBase::addenv(const char * const e)
{
if (auto eq = strchr(e, '=')) {
envmap.insert({ std::string_view(e, eq - e), eq + 1 });
}
}
template<typename in, typename out>
inline
void
mapVars(const std::string_view & vn, const in & envmap, out & map, const std::string_view & sp) {
auto qs = envmap.find(vn);
if (qs != envmap.end()) {
XWwwFormUrlEncoded::iterateVars(qs->second, [&map](const auto & k, const auto & v) {
map.insert({ k, v });
}, sp);
}
}
template<typename Ex, typename Map>
const std::string_view &
findFirstOrElse(const Map &)
{
throw Ex();
}
template<typename Ex, typename Map, typename ... Ks>
const std::string_view &
findFirstOrElse(const Map & map, const std::string_view & k, const Ks & ... ks)
{
auto i = map.find(k);
if (i == map.end()) {
return findFirstOrElse<Ex>(map, ks...);
}
return i->second;
}
bool CgiRequestBase::ciLess::operator() (const std::string_view & s1, const std::string_view & s2) const
{
return lexicographical_compare(s1, s2, ba::is_iless());
}
void
CgiRequestBase::initialize()
{
namespace ba = boost::algorithm;
if (auto path = findFirstOrElse<Http400_BadRequest>(envmap, REDIRECT_URL, SCRIPT_NAME).substr(1);
!path.empty()) {
ba::split(pathElements, path, ba::is_any_of("/"), ba::token_compress_off);
}
mapVars(QUERY_STRING, envmap, qsmap, amp);
mapVars(HTTP_COOKIE, envmap, cookiemap, semi);
for (auto header = envmap.lower_bound(HEADER_PREFIX);
header != envmap.end() && ba::starts_with(header->first, HEADER_PREFIX);
header++) {
hdrmap.insert({ header->first.substr(HEADER_PREFIX.length()), header->second });
}
}
AdHocFormatter(VarFmt, "\t%?: [%?]\n");
AdHocFormatter(PathFmt, "\t[%?]\n");
template<typename Fmt, typename Map>
void
dumpMap(std::ostream & s, const std::string_view & n, const Map & map)
{
s << n << std::endl;
for (const auto & p : map) {
Fmt::write(s, p.first, p.second);
}
}
std::ostream &
CgiRequestBase::dump(std::ostream & s) const
{
dumpMap<VarFmt>(s, "Environment dump"sv, envmap);
s << "Path dump" << std::endl;
for (const auto & e : pathElements) {
PathFmt::write(s, e);
}
dumpMap<VarFmt>(s, "Query string dump"sv, qsmap);
dumpMap<VarFmt>(s, "Cookie dump"sv, cookiemap);
return s;
}
template<typename MapType>
OptionalString
CgiRequestBase::optionalLookup(const std::string_view & key, const MapType & vm)
{
auto i = vm.find(key);
if (i == vm.end()) {
return {};
}
return i->second;
}
const PathElements &
CgiRequestBase::getRequestPath() const
{
return pathElements;
}
PathElements &
CgiRequestBase::getRequestPath()
{
return pathElements;
}
HttpMethod
CgiRequestBase::getRequestMethod() const
{
try {
auto i = envmap.find(REQUEST_METHOD);
if (i == envmap.end()) {
throw IceSpider::Http400_BadRequest();
}
return Slicer::ModelPartForEnum<HttpMethod>::lookup(i->second);
}
catch (const Slicer::InvalidEnumerationSymbol &) {
throw IceSpider::Http405_MethodNotAllowed();
}
}
OptionalString
CgiRequestBase::getQueryStringParam(const std::string_view & key) const
{
return optionalLookup(key, qsmap);
}
OptionalString
CgiRequestBase::getCookieParam(const std::string_view & key) const
{
return optionalLookup(key, cookiemap);
}
OptionalString
CgiRequestBase::getEnv(const std::string_view & key) const
{
return optionalLookup(key, envmap);
}
OptionalString
CgiRequestBase::getHeaderParam(const std::string_view & key) const
{
return optionalLookup(key, hdrmap);
}
void CgiRequestBase::response(short statusCode, const std::string_view & statusMsg) const
{
StatusFmt::write(getOutputStream(), statusCode, statusMsg);
}
void
CgiRequestBase::setHeader(const std::string_view & header, const std::string_view & value) const
{
HdrFmt::write(getOutputStream(), header, value);
}
}
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