modules/generators/mod_asis.c

	mod_asis.c revision fc9b2e8809c305f340d86a789566f8abb1ca8a19
/* ====================================================================
 * Copyright (c) 1995-1999 The Apache Group.  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.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the Apache Group
 *    for use in the Apache HTTP server project (http://www.apache.org/)."
 *
 * 4. The names "Apache Server" and "Apache Group" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the Apache Group
 *    for use in the Apache HTTP server project (http://www.apache.org/)."
 *
 * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
 * EXPRESSED 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 APACHE GROUP OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Group and was originally based
 * on public domain software written at the National Center for
 * Supercomputing Applications, University of Illinois, Urbana-Champaign.
 * For more information on the Apache Group and the Apache HTTP server
 * project, please see <http://www.apache.org/>.
 *
 */

#include "httpd.h"
#include "http_config.h"
#include "http_protocol.h"
#include "http_log.h"
#include "util_script.h"
#include "http_main.h"
#include "http_request.h"

static int asis_handler(request_rec *r)
{
    ap_file_t *f;
    const char *location;
    FILE *thefile;         /* XXX leave these alone until we convert */
    int thefd;             /* everything to use apr_file_t's. */

    r->allowed |= (1 << M_GET);
    if (r->method_number != M_GET)
    return DECLINED;
    if (r->finfo.st_mode == 0) {
    ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, r,
            "File does not exist: %s", r->filename);
    return NOT_FOUND;
    }

    if (ap_open(&f, r->pool, r->filename, APR_READ | APR_BUFFERED,
                APR_OS_DEFAULT) != APR_SUCCESS) {
    ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
            "file permissions deny server access: %s", r->filename);
    return FORBIDDEN;
    }

    ap_get_os_file(&thefd, f);
    thefile = fdopen(thefd, "r");

    ap_scan_script_header_err(r, thefile, NULL);
    location = ap_table_get(r->headers_out, "Location");

    if (location && location[0] == '/' &&
    ((r->status == HTTP_OK) || ap_is_HTTP_REDIRECT(r->status))) {

    ap_close(f);

    /* Internal redirect -- fake-up a pseudo-request */
    r->status = HTTP_OK;

    /* This redirect needs to be a GET no matter what the original
     * method was.
     */
    r->method = ap_pstrdup(r->pool, "GET");
    r->method_number = M_GET;

    ap_internal_redirect_handler(location, r);
    return OK;
    }

    ap_send_http_header(r);
    if (!r->header_only) {
        ap_off_t zero = 0;
    ap_seek(f, APR_CUR, &zero);
    ap_send_fd(f, r);
    }

    ap_close(f);
    return OK;
}

static const handler_rec asis_handlers[] =
{
    {ASIS_MAGIC_TYPE, asis_handler},
    {"send-asis", asis_handler},
    {NULL}
};

module MODULE_VAR_EXPORT asis_module =
{
    STANDARD20_MODULE_STUFF,
    NULL,           /* create per-directory config structure */
    NULL,           /* merge per-directory config structures */
    NULL,           /* create per-server config structure */
    NULL,           /* merge per-server config structures */
    NULL,           /* command ap_table_t */
    asis_handlers,      /* handlers */
    NULL            /* register hooks */
};