src/server/daemon/error.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2013 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "error.h"

#include "../ucx/string.h"
#include "../util/pblock.h"

// macro for creating an error string (ucx sstr_t)
#define ERRMSG(s) { s, sizeof(s)-1 }

static sstr_t error_403 = ERRMSG("<html><body>forbidden</body></html>");
static sstr_t error_404 = ERRMSG("<html><body>not found</body></html>");
static sstr_t error_500 = ERRMSG("<html><body>server error</body></html>");

static sstr_t error_std = ERRMSG("<html><body>error</body></html>");

int nsapi_error_request(Session *sn, Request *rq) {
    short status = rq->status_num;
    sstr_t msg = error_std;
    switch(status) {
        case 403: {
            msg = error_403;
            break;
        }
        case 404: {
            msg = error_404;
            break;
        }
        case 500: {
            msg = error_500;
            break;
        }
    }
    
    pblock_kninsert(pb_key_content_length, msg.length, rq->srvhdrs);
    pblock_removekey(pb_key_content_type, rq->srvhdrs);
    pblock_nvinsert("content-type", "text/html", rq->srvhdrs);
    http_start_response(sn, rq);
    
    net_write(sn->csd, msg.ptr, msg.length);
    
    return REQ_PROCEED;
}