Fossil

/*
** Checks the QUERY_STRING environment variable, sets it up via
** add_param_list() and, if found, applies its "skin" setting. Returns
** 0 if no QUERY_STRING is set, else it returns a bitmask of:
**
** 0x01 = QUERY_STRING was set up
** 0x02 = "skin" GET arg was processed
** 0x04 = "x-f-x-l" GET arg was processed.
**
*  In the case of the skin, the cookie may still need flushing
** by the page, via cookie_render().
*/
int cgi_setup_query_string(void){
  int rc = 0;
  char * z = (char*)P("QUERY_STRING");

        /* Per /chat discussion, passing ?skin=... without "once"
        ** implies the "udc" argument, so we force that into the
        ** environment here. */
        cgi_set_parameter_nocopy("udc", "1", 1);
      }
      fossil_free(zErr);
    }

    if( !g.syncInfo.zLoginCard && 0!=(z=(char*)P("x-f-x-l")) ){
      /* CGI fossil instances do not read the HTTP headers, so
      ** they cannot see the X-Fossil-Xfer-Login card. As a consolation
      ** to them, we'll accept that via this query argument. */
      rc |= 0x04;
      fossil_free( g.syncInfo.zLoginCard );
      g.syncInfo.zLoginCard = fossil_strdup(z);
      g.syncInfo.fLoginCardMode |= 0x10;
      cgi_delete_parameter("x-f-x-l");
    }
  }
  return rc;
}

/*
** Initialize the query parameter database.  Information is pulled from
** the QUERY_STRING environment variable (if it exists), from standard