mod_dir.c revision 4f9a74ad7e44b0464f7cf56525a205d788becacb
2058N/A/* ====================================================================
2058N/A * The Apache Software License, Version 1.1
2058N/A *
2058N/A * Copyright (c) 2000 The Apache Software Foundation. All rights
2058N/A * reserved.
2058N/A *
2058N/A * Redistribution and use in source and binary forms, with or without
2058N/A * modification, are permitted provided that the following conditions
2058N/A * are met:
2058N/A *
2058N/A * 1. Redistributions of source code must retain the above copyright
2058N/A * notice, this list of conditions and the following disclaimer.
2058N/A *
2058N/A * 2. Redistributions in binary form must reproduce the above copyright
2058N/A * notice, this list of conditions and the following disclaimer in
2058N/A * the documentation and/or other materials provided with the
2058N/A * distribution.
2058N/A *
2058N/A * 3. The end-user documentation included with the redistribution,
2058N/A * if any, must include the following acknowledgment:
2058N/A * "This product includes software developed by the
2058N/A * Apache Software Foundation (http://www.apache.org/)."
2058N/A * Alternately, this acknowledgment may appear in the software itself,
2058N/A * if and wherever such third-party acknowledgments normally appear.
2058N/A *
2058N/A * 4. The names "Apache" and "Apache Software Foundation" must
2058N/A * not be used to endorse or promote products derived from this
2058N/A * software without prior written permission. For written
2058N/A * permission, please contact apache@apache.org.
2058N/A *
2058N/A * 5. Products derived from this software may not be called "Apache",
2058N/A * nor may "Apache" appear in their name, without prior written
2058N/A * permission of the Apache Software Foundation.
2058N/A *
2058N/A * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
2058N/A * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
2058N/A * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2058N/A * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
2058N/A * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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2058N/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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2058N/A * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2058N/A * SUCH DAMAGE.
2058N/A * ====================================================================
2058N/A *
2058N/A * This software consists of voluntary contributions made by many
2058N/A * individuals on behalf of the Apache Software Foundation. For more
2058N/A * information on the Apache Software Foundation, please see
2058N/A * <http://www.apache.org/>.
2058N/A *
2058N/A * Portions of this software are based upon public domain software
2058N/A * originally written at the National Center for Supercomputing Applications,
2058N/A * University of Illinois, Urbana-Champaign.
2058N/A */
2058N/A
2058N/A/*
2058N/A * mod_dir.c: handle default index files, and trailing-/ redirects
2058N/A */
2058N/A
2058N/A#include "ap_config.h"
2058N/A#include "httpd.h"
2058N/A#include "http_config.h"
2058N/A#include "http_core.h"
2058N/A#include "http_request.h"
2058N/A#include "http_protocol.h"
2058N/A#include "http_log.h"
2058N/A#include "http_main.h"
2058N/A#include "util_script.h"
2058N/A
2058N/Amodule MODULE_VAR_EXPORT dir_module;
2058N/A
2058N/Atypedef struct dir_config_struct {
2058N/A ap_array_header_t *index_names;
2058N/A} dir_config_rec;
2058N/A
2058N/A#define DIR_CMD_PERMS OR_INDEXES
static const char *add_index(cmd_parms *cmd, void *dummy, const char *arg)
{
dir_config_rec *d = dummy;
if (!d->index_names) {
d->index_names = ap_make_array(cmd->pool, 2, sizeof(char *));
}
*(char **)ap_push_array(d->index_names) = arg;
return NULL;
}
static const command_rec dir_cmds[] =
{
AP_INIT_ITERATE("DirectoryIndex", add_index, NULL, DIR_CMD_PERMS,
"a list of file names"),
{NULL}
};
static void *create_dir_config(ap_pool_t *p, char *dummy)
{
dir_config_rec *new =
(dir_config_rec *) ap_pcalloc(p, sizeof(dir_config_rec));
new->index_names = NULL;
return (void *) new;
}
static void *merge_dir_configs(ap_pool_t *p, void *basev, void *addv)
{
dir_config_rec *new = (dir_config_rec *) ap_pcalloc(p, sizeof(dir_config_rec));
dir_config_rec *base = (dir_config_rec *) basev;
dir_config_rec *add = (dir_config_rec *) addv;
new->index_names = add->index_names ? add->index_names : base->index_names;
return new;
}
static int handle_dir(request_rec *r)
{
dir_config_rec *d =
(dir_config_rec *) ap_get_module_config(r->per_dir_config,
&dir_module);
char *dummy_ptr[1];
char **names_ptr;
int num_names;
int error_notfound = 0;
if (r->uri[0] == '\0' || r->uri[strlen(r->uri) - 1] != '/') {
char *ifile;
if (r->args != NULL)
ifile = ap_pstrcat(r->pool, ap_escape_uri(r->pool, r->uri),
"/", "?", r->args, NULL);
else
ifile = ap_pstrcat(r->pool, ap_escape_uri(r->pool, r->uri),
"/", NULL);
ap_table_setn(r->headers_out, "Location",
ap_construct_url(r->pool, ifile, r));
return HTTP_MOVED_PERMANENTLY;
}
/* KLUDGE --- make the sub_req lookups happen in the right directory.
* Fixing this in the sub_req_lookup functions themselves is difficult,
* and would probably break virtual includes...
*/
if (r->filename[strlen(r->filename) - 1] != '/') {
r->filename = ap_pstrcat(r->pool, r->filename, "/", NULL);
}
if (d->index_names) {
names_ptr = (char **)d->index_names->elts;
num_names = d->index_names->nelts;
}
else {
dummy_ptr[0] = AP_DEFAULT_INDEX;
names_ptr = dummy_ptr;
num_names = 1;
}
for (; num_names; ++names_ptr, --num_names) {
char *name_ptr = *names_ptr;
request_rec *rr = ap_sub_req_lookup_uri(name_ptr, r);
if (rr->status == HTTP_OK && rr->finfo.filetype == APR_REG) {
char *new_uri = ap_escape_uri(r->pool, rr->uri);
if (rr->args != NULL)
new_uri = ap_pstrcat(r->pool, new_uri, "?", rr->args, NULL);
else if (r->args != NULL)
new_uri = ap_pstrcat(r->pool, new_uri, "?", r->args, NULL);
ap_destroy_sub_req(rr);
ap_internal_redirect(new_uri, r);
return OK;
}
/* If the request returned a redirect, propagate it to the client */
if (ap_is_HTTP_REDIRECT(rr->status) ||
(rr->status == HTTP_NOT_ACCEPTABLE && num_names == 1)) {
error_notfound = rr->status;
r->notes = ap_overlay_tables(r->pool, r->notes, rr->notes);
r->headers_out = ap_overlay_tables(r->pool, r->headers_out,
rr->headers_out);
r->err_headers_out = ap_overlay_tables(r->pool, r->err_headers_out,
rr->err_headers_out);
return error_notfound;
}
/* If the request returned something other than 404 (or 200),
* it means the module encountered some sort of problem. To be
* secure, we should return the error, rather than create
* along a (possibly unsafe) directory index.
*
* So we store the error, and if none of the listed files
* exist, we return the last error response we got, instead
* of a directory listing.
*/
if (rr->status && rr->status != HTTP_NOT_FOUND && rr->status != HTTP_OK)
error_notfound = rr->status;
ap_destroy_sub_req(rr);
}
if (error_notfound)
return error_notfound;
if (r->method_number != M_GET)
return DECLINED;
/* nothing for us to do, pass on through */
return DECLINED;
}
static const handler_rec dir_handlers[] =
{
{DIR_MAGIC_TYPE, handle_dir},
{NULL}
};
module MODULE_VAR_EXPORT dir_module = {
STANDARD20_MODULE_STUFF,
create_dir_config, /* create per-directory config structure */
merge_dir_configs, /* merge per-directory config structures */
NULL, /* create per-server config structure */
NULL, /* merge per-server config structures */
dir_cmds, /* command ap_table_t */
dir_handlers, /* handlers */
NULL /* register hooks */
};