Fossil

/*
** Additional information used to form the HTTP reply
*/
static const char *zContentType = "text/html";     /* Content type of the reply */
static const char *zReplyStatus = "OK";            /* Reply status description */
static int iReplyStatus = 200;               /* Reply status code */
static Blob extraHeader = BLOB_INITIALIZER;  /* Extra header text */
static int rangeStart = 0;                   /* Start of Range: */
static int rangeEnd = 0;                     /* End of Range: plus 1 */

/*
** Set the reply content type
*/
void cgi_set_content_type(const char *zType){
  zContentType = mprintf("%s", zType);
}

  int total_size;
  if( iReplyStatus<=0 ){
    iReplyStatus = 200;
    zReplyStatus = "OK";
  }

  if( g.fullHttpReply ){
    if( rangeEnd>0
     && iReplyStatus==200 
     && fossil_strcmp(P("REQUEST_METHOD"),"GET")==0
    ){
      iReplyStatus = 206;
    }
    fprintf(g.httpOut, "HTTP/1.0 %d %s\r\n", iReplyStatus, zReplyStatus);
    fprintf(g.httpOut, "Date: %s\r\n", cgi_rfc822_datestamp(time(0)));
    fprintf(g.httpOut, "Connection: close\r\n");
    fprintf(g.httpOut, "X-UA-Compatible: IE=edge\r\n");
  }else{
    assert( rangeEnd==0 );
    fprintf(g.httpOut, "Status: %d %s\r\n", iReplyStatus, zReplyStatus);
  }
  if( g.isConst ){
    /* isConst means that the reply is guaranteed to be invariant, even
    ** after configuration changes and/or Fossil binary recompiles. */
    fprintf(g.httpOut, "Cache-Control: max-age=31536000\r\n");
  }else if( etag_tag()!=0 ){

  */
  fprintf(g.httpOut, "Content-Type: %s; charset=utf-8\r\n", zContentType);
  if( fossil_strcmp(zContentType,"application/x-fossil")==0 ){
    cgi_combine_header_and_body();
    blob_compress(&cgiContent[0], &cgiContent[0]);
  }

  if( iReplyStatus!=304 ) {
    if( is_gzippable() && iReplyStatus!=206 ){
      int i;
      gzip_begin(0);
      for( i=0; i<2; i++ ){
        int size = blob_size(&cgiContent[i]);
        if( size>0 ) gzip_step(blob_buffer(&cgiContent[i]), size);
        blob_reset(&cgiContent[i]);
      }
      gzip_finish(&cgiContent[0]);
      fprintf(g.httpOut, "Content-Encoding: gzip\r\n");
      fprintf(g.httpOut, "Vary: Accept-Encoding\r\n");
    }
    total_size = blob_size(&cgiContent[0]) + blob_size(&cgiContent[1]);
    if( iReplyStatus==206 ){
      fprintf(g.httpOut, "Content-Range: bytes %d-%d/%d\r\n",
              rangeStart, rangeEnd-1, total_size);
      total_size = rangeEnd - rangeStart; 
    }
    fprintf(g.httpOut, "Content-Length: %d\r\n", total_size);
  }else{
    total_size = 0;
  }
  fprintf(g.httpOut, "\r\n");
  if( total_size>0 && iReplyStatus != 304
   && fossil_strcmp(P("REQUEST_METHOD"),"HEAD")!=0
  ){
    int i, size;
    for(i=0; i<2; i++){
      size = blob_size(&cgiContent[i]);
      if( size<=rangeStart ){
        rangeStart -= size;
      }else{
        int n = size - rangeStart;
        if( n>total_size ){
          n = total_size;
        }
        fwrite(blob_buffer(&cgiContent[i])+rangeStart, 1, n, g.httpOut);
        rangeStart = 0;
        total_size -= n;
      }
    }
  }
  fflush(g.httpOut);
  CGIDEBUG(("-------- END cgi ---------\n"));

  /* After the webpage has been sent, do any useful background

    }else if( fossil_strcmp(zFieldName,"authorization:")==0 ){
      cgi_setenv("HTTP_AUTHORIZATION", zVal);
    }else if( fossil_strcmp(zFieldName,"x-forwarded-for:")==0 ){
      const char *zIpAddr = cgi_accept_forwarded_for(zVal);
      if( zIpAddr!=0 ){
        g.zIpAddr = mprintf("%s", zIpAddr);
        cgi_replace_parameter("REMOTE_ADDR", g.zIpAddr);
      }
    }else if( fossil_strcmp(zFieldName,"range:")==0 ){
      int x1 = 0;
      int x2 = 0;
      if( sscanf(zVal,"bytes=%d-%d",&x1,&x2)==2 && x1>=0 && x1<=x2 ){
        rangeStart = x1;
        rangeEnd = x2+1;
      }
    }
  }
  cgi_init();
  cgi_trace(0);
}