%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% HTCd/1.2 Server (H. Rydberg, 2001)
% Supports methods HEAD, GET, PUT, POST, DELETE
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Useragent setting
%
\if(count \req.accept.lang){\setlang{\req.accept.lang}}
\const{FRAMES}(int(\req.useragent past "Mozilla/")>=2);
\if{\FRAMES}{
  \redef{target}{x}{
    \if(
      (\1 cnt "//") ||
      ( (\sub{\1}{0}{1} eq "/") && ("HEAD BODY FOOT" which (\1 past "/" left "/"))==0)
    ){ target=_top}
  }
}
\const{killframes}{
  \if(int(\req.useragent past "Mozilla/")>2){
    if(self!=top) top.location.replace(self.location)}{
      if(self!=top) top.location=self.location}}
%
% Set userid and other cookies
% Handle errors directly
%
[userok:=1;];
\def{statlog}{x}{\resp.status{\HTTP.[\1]}}
\for(i:=0)(i<\ncookie)(i+=1){
  \switch{\cookie[i].name}
  {LANG}{
    \setlang{\cookie[i].val}
  }
  {FRAMES}{
    \reconst{FRAMES}(int \cookie[i].val);
  }
  {AUTH}{
    %MIGRATION to HTCd/1.1
    %Just silently remove the cookie and continue
    \resp.cookie{AUTH}{deleted}{path=/; expires=\time2http{1}}
  }
  {ID}{
    [uid:=\cookie[i].val left ".";pin:=\cookie[i].val past "."];
    \setuser(uid);
    [MAXFAIL:=\on.clear{EXPERT}{1}{3}];
    \if(\user.id && \user.pin eq pin){
      \if(\user.fail>0){
        \if(\user.fail>=MAXFAIL){
          \statlog{409}[userok=0;];
          \resp.cont.type.charset{};
          \output{
            \body{
              \h3{Login \lang{Failure}{fel}}
              \lang{
                There has been too many bad logins.
                Please contact the \href{mailto:\ADMIN}{Server Administrator}.
              }{
                F{\"o}r m{\aa}nga login-fel har gjorts.
                Var v{\"a}nlig kontakta \href{mailto:\ADMIN}{Serveradministrat{\"o}ren}.
              }
            }
          }
          \setcookie{ID}{deleted}{1}
        }{
          \mail.user{LOGIN ALERT}{
            \lang{
              There has been (\user.fail) PIN failures
            }{
              Ett antal (\user.fail) PIN fel har gjorts.
            }
            
            \user.lastin; (\gethost{\user.lastin})
            \time2htc{\user.last}
          }
          \user.fail.set{0}\user.update;
        }
      }{
        \if(\user.lastin ne \remote.address){
          \on.clear{EXPERT}{
            \mail.user{HOST ALERT}{
              \lang{
                A change of access address has occured.
              }{
                Ett byte av access-adress har intr{\"a}ffat.
              }
              
              \lang{Current access:}{Nuvarande access:}
              \remote.address; (\remote.name)
              \time2htc{\now}
              
              \lang{Last access:}{Senaste access:}
              \user.lastin; (\gethost{\user.lastin})
              \time2htc{\user.last}
            }
          }{
            \log{HOST ALERT \user.lastin -> \remote.address}
          }
        }
      }
    }{
      \if{\user.id}{
        \user.fail.set(\user.fail+1)\user.update;
        \if(\user.fail==MAXFAIL){
          \mail.root{PIN failure}{
            PIN failure (\user.fail) for \user.id: \user.name <\user.email>
            From: \remote.address:\remote.port; (\remote.name)
          }
        }
      }
      \statlog{409}[userok=0;];
      \resp.cont.type.charset{};
      \output{
        \body{
          \h3{\lang{Bad User}{Felaktig anv{\"a}ndare}}
          \lang{
            Please check your user credentials and press the Back button.
          }{
            Var v{\"a}nlig kontrollera din anv{\"a}ndarinformation
            och tryck p{\aa} Tillbaka-knappen.
          }
        }
      }
      \setcookie{ID}{deleted}{1}
    }
  }
}
%
% At this point, user is set.
%
\if(\user.id){\user.last.set{\now}\user.lastin.set{\remote.address}\user.update}
%
% userok tells whether we should continue or not.
%
\if(userok){
  %
  % Start by checking special URIs
  %
  [muri:=\req.uri;sroute:=muri past "/" left "/"];
  \if(sroute eq "POST")(muri=muri past "/" past sroute;sroute=muri past "/" left "/");
  \const{this}(muri);
  \if("LOGIN LOGOUT" which sroute)(muri=muri past "/" past sroute)(sroute="");
  \const{referer}{\server;[muri]\andarg}
  [route:=muri past "/" left "/";];
  \if("SRC RAW HEAD FOOT BODY" which route)(muri=muri past "/" past route)(route="");
  \seturi(muri);
  [lroute:=muri past "/" left "/";];
  \if("en sv" which lroute){[muri=muri past "/" past lroute]\setlang(lroute)}(lroute="");
  \const{andlang}{/\lang{en}{sv}}
  %
  % sroute ->  LOGIN|LOGOUT|none
  % route ->   SRC|RAW|HEAD|FOOT|BODY|none
  % lroute ->  en|sv|none
  % this ->    req.uri without POST
  % referer -> complete URL (without POST|LOGIN|LOGOUT)
  % uri ->     directory URI (without SRC|RAW|HEAD|FOOT|BODY)
  % andlang -> /[lang]
  % muri ->    mappable uri (without en|sv)
  %
  % Check method and dispatch
  %
  \if(\req.method eq "PUT" || \req.method eq "DELETE"){
    %
    % PUT and DELETE treated together
    %
    [wclear:=\upload.clear(muri)];
    \if((count sroute)||(count lroute)|| !("SRC RAW" which route)||(wclear eq "ROOT")){
      \statlog{405};
      \resp.cont.type.charset{};
      \output{
        \body{
          \h3{\lang{Method not allowed}{Metoden ej till{\aa}ten}}
          \lang{
            \req.method is not allowed here.
          }{
            \req.method; {\"a}r ej till{\aa}ten h{\"a}r.
          }
          <p>
          \href{\server}{\lang{Home}{Hem}}
        }
      }
    }{
      \if{\user.allow(wclear){\now}}{
        \statlog{200};
        \if(\req.method eq "DELETE"){\upload.delete(muri)}{\upload.put(muri)}
      }{
        \statlog{409}
        \resp.cont.type.charset{};
        \output{
          \body{
            \h3{\lang{Conflict}{Konflikt}}
            \lang{
              The request could not be granted.
            }{
              Kommandot kunde ej utf{\"o}ras.
            }
            <p>
            \href{\server}{\lang{Home}{Hem}}
          }
        }
      }
    }
  }{
    %
    % HEAD, GET and POST treated together
    %
    [fallow:=0;uallow:=0;rallow:=0;callow:=0];
    \switch(sroute){LOGIN}{\page.login}{LOGOUT}{\page.logout}{
      \staturi(muri){
        \if(stat.URI ne muri){
          [canonized:={\server\andlang;[stat.URI]\andarg}];
          \resp.status{\HTTP.301};
          \resp.location(canonized);
          \resp.cont.type.charset{};
          \output{\href(canonized)(canonized)}
        }{
          \if(count stat.ALIAS){\db{TREE}(@<-stat.)};
          \setgroup(first stat.X.CLEAR);
          [
            fallow=1;
            ttime:=\if(stat.MOD&36){\now}(stat.LASTMOD);
            uallow=\user.allow(stat.X.CLEAR)(ttime);
            rallow=\remote.allow(stat.X.DOMAIN);
            callow=\cookie.allow(stat.X.COOKIE);
          ];
          \nif((count stat.REFER) && uallow && rallow && callow)(userok=0){
            \statlog{200}[cacheok:=0];
            \if("text/x-htc text/x-htx text/html" which stat.MIME){
              \if(\req.method eq "POST"){
                \show.page;
              }{
                \switch(route)
                {SRC}{
                  \show.srcpage
                }
                {RAW}{
                  \show.rawpage
                }
                {HEAD}{
                  \page.header
                }
                {FOOT}{
                  \page.footer
                }
                {BODY}{
                  \show.page;
                  [cacheok=(first \resp.getstatus == 200);]
                }
                {
                  \if(count lroute){\layout}{
                    [canonized:={\server\andlang\uri\andarg}];
                    \resp.status{\HTTP.301};
                    \resp.location(canonized);
                    \resp.cont.type.charset{};
                    \output{\href(canonized)(canonized)}
                  }
                }
              }
            }{
              \resp.cont.type(stat.MIME);
              \output{\load(stat.REFER)}[cacheok=1;]
            }
            \if(cacheok&&(count stat.X.CACHE)){
              \resp.pragma{}
              \if(stat.X.CACHE){
                \resp.lastmod{\time2http(stat.LASTMOD)}
                [expire:=\now+stat.X.CACHE;
                \if(expire<=stat.LASTMOD)(expire=stat.LASTMOD+1)];
                \resp.expires{\time2http(expire)}
              }
            }
          }
        }
      }(userok=0)
    }
    \nif(userok){
      \statlog{404};
      \resp.cont.type.charset{};
      \output{
        \body{
          \h3{\lang{Not Found}{Ej hittad}}
          \lang{
            The requested uri (\req.uri) could not be found.
          }{
            Den beg{\"a}rda sidan (\req.uri) kunde inte hittas.
          }
          \nif{\user.id}{
            \if(\req.useragent cnt "Mozilla"){
              <p>
              \lang
              {The reason \it{may} be that you need need to }
              {Andledningen \it{kan} vara att du beh{\"o}ver }
              \href{/LOGIN\req.uri\andarg}{\lang{login}{logga in}} \lang{first}{f{\"o}rst}.
            }{
              <p>
              \lang{
                The reason \it{may} be that your user credentials were improperly set.
              }{
                Anledningen \it{kan} vara att din anv{\"a}ndar information {\"a}r felaktigt satt.
              }
              <p>
              \lang{
                Please go back try again.
              }{
                G{\aa} tillbaka och f{\"o}rs{\"o}k igen.
              }
            }              
          }{
            \if(fallow){
              <p>
              \lang{Reason:}{Orsak:}
              \nif(uallow){\lang{Bad clearance}{Fel r{\"a}ttigheter}}
              \nif(rallow){\lang{Bad access address}{Felaktig access-adress}}
              \nif(callow){\lang{Bad cookie}{Felaktig 'cookie'}}
            }
          }
          <p>
          \href{\server}{\lang{Home}{Hem}}
        }
      }
    }
  }
}