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- /* ====================================================================
- * 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/>.
- *
- */
-
- /*
- * mod_dir.c: handle default index files, and trailing-/ redirects
- */
-
- #include "httpd.h"
- #include "http_config.h"
- #include "http_core.h"
- #include "http_request.h"
- #include "http_protocol.h"
- #include "http_log.h"
- #include "http_main.h"
- #include "util_script.h"
-
- module MODULE_VAR_EXPORT dir_module;
-
- typedef struct dir_config_struct {
- array_header *index_names;
- } dir_config_rec;
-
- #define DIR_CMD_PERMS OR_INDEXES
-
- static const char *add_index(cmd_parms *cmd, void *dummy, 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[] =
- {
- {"DirectoryIndex", add_index, NULL,
- DIR_CMD_PERMS, ITERATE,
- "a list of file names"},
- {NULL}
- };
-
- static void *create_dir_config(pool *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(pool *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] = 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.st_mode != 0) {
- 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);
- ap_destroy_sub_req(rr);
- 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 =
- {
- STANDARD_MODULE_STUFF,
- NULL, /* initializer */
- create_dir_config, /* dir config creater */
- merge_dir_configs, /* dir merger --- default is to override */
- NULL, /* server config */
- NULL, /* merge server config */
- dir_cmds, /* command table */
- dir_handlers, /* handlers */
- NULL, /* filename translation */
- NULL, /* check_user_id */
- NULL, /* check auth */
- NULL, /* check access */
- NULL, /* type_checker */
- NULL, /* fixups */
- NULL, /* logger */
- NULL, /* header parser */
- NULL, /* child_init */
- NULL, /* child_exit */
- NULL /* post read-request */
- };
-