From 6beeb1b708550be0d4a53b272283e17e5e35fe17 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 17:01:30 +0200
Subject: Adding upstream version 2.4.57.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 modules/generators/mod_autoindex.c | 2350 ++++++++++++++++++++++++++++++++++++
 1 file changed, 2350 insertions(+)
 create mode 100644 modules/generators/mod_autoindex.c

(limited to 'modules/generators/mod_autoindex.c')

diff --git a/modules/generators/mod_autoindex.c b/modules/generators/mod_autoindex.c
new file mode 100644
index 0000000..cb44603
--- /dev/null
+++ b/modules/generators/mod_autoindex.c
@@ -0,0 +1,2350 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * mod_autoindex.c: Handles the on-the-fly html index generation
+ *
+ * Rob McCool
+ * 3/23/93
+ *
+ * Adapted to Apache by rst.
+ *
+ * Version sort added by Martin Pool <mbp@humbug.org.au>.
+ */
+
+#include "apr_strings.h"
+#include "apr_fnmatch.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#include "ap_config.h"
+#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"
+
+#include "mod_core.h"
+
+module AP_MODULE_DECLARE_DATA autoindex_module;
+
+/****************************************************************
+ *
+ * Handling configuration directives...
+ */
+
+#define NO_OPTIONS          (1 <<  0)  /* Indexing options */
+#define ICONS_ARE_LINKS     (1 <<  1)
+#define SCAN_HTML_TITLES    (1 <<  2)
+#define SUPPRESS_ICON       (1 <<  3)
+#define SUPPRESS_LAST_MOD   (1 <<  4)
+#define SUPPRESS_SIZE       (1 <<  5)
+#define SUPPRESS_DESC       (1 <<  6)
+#define SUPPRESS_PREAMBLE   (1 <<  7)
+#define SUPPRESS_COLSORT    (1 <<  8)
+#define SUPPRESS_RULES      (1 <<  9)
+#define FOLDERS_FIRST       (1 << 10)
+#define VERSION_SORT        (1 << 11)
+#define TRACK_MODIFIED      (1 << 12)
+#define FANCY_INDEXING      (1 << 13)
+#define TABLE_INDEXING      (1 << 14)
+#define IGNORE_CLIENT       (1 << 15)
+#define IGNORE_CASE         (1 << 16)
+#define EMIT_XHTML          (1 << 17)
+#define SHOW_FORBIDDEN      (1 << 18)
+#define ADDALTCLASS         (1 << 19)
+#define OPTION_UNSET        (1 << 20)
+
+#define K_NOADJUST 0
+#define K_ADJUST 1
+#define K_UNSET 2
+
+/*
+ * Define keys for sorting.
+ */
+#define K_NAME 'N'              /* Sort by file name (default) */
+#define K_LAST_MOD 'M'          /* Last modification date */
+#define K_SIZE 'S'              /* Size (absolute, not as displayed) */
+#define K_DESC 'D'              /* Description */
+#define K_VALID "NMSD"          /* String containing _all_ valid K_ opts */
+
+#define D_ASCENDING 'A'
+#define D_DESCENDING 'D'
+#define D_VALID "AD"            /* String containing _all_ valid D_ opts */
+
+/*
+ * These are the dimensions of the default icons supplied with Apache.
+ */
+#define DEFAULT_ICON_WIDTH 20
+#define DEFAULT_ICON_HEIGHT 22
+
+/*
+ * Other default dimensions.
+ */
+#define DEFAULT_NAME_WIDTH 23
+#define DEFAULT_DESC_WIDTH 23
+
+struct item {
+    char *type;
+    char *apply_to;
+    char *apply_path;
+    char *data;
+};
+
+typedef struct ai_desc_t {
+    char *pattern;
+    char *description;
+    int full_path;
+    int wildcards;
+} ai_desc_t;
+
+typedef struct autoindex_config_struct {
+
+    char *default_icon;
+    char *style_sheet;
+    char *head_insert;
+    char *header;
+    char *readme;
+    apr_int32_t opts;
+    apr_int32_t incremented_opts;
+    apr_int32_t decremented_opts;
+    int name_width;
+    int name_adjust;
+    int desc_width;
+    int desc_adjust;
+    int icon_width;
+    int icon_height;
+    char default_keyid;
+    char default_direction;
+
+    apr_array_header_t *icon_list;
+    apr_array_header_t *alt_list;
+    apr_array_header_t *desc_list;
+    apr_array_header_t *ign_list;
+    int ign_noinherit;
+
+    char *ctype;
+    char *charset;
+    char *datetime_format;
+} autoindex_config_rec;
+
+static char c_by_encoding, c_by_type, c_by_path;
+
+#define BY_ENCODING &c_by_encoding
+#define BY_TYPE &c_by_type
+#define BY_PATH &c_by_path
+
+static APR_INLINE int response_is_html(request_rec *r)
+{
+    char *ctype = ap_field_noparam(r->pool, r->content_type);
+
+    return !ap_cstr_casecmp(ctype, "text/html")
+        || !ap_cstr_casecmp(ctype, "application/xhtml+xml");
+}
+
+/*
+ * This routine puts the standard HTML header at the top of the index page.
+ * We include the DOCTYPE because we may be using features therefrom (i.e.,
+ * HEIGHT and WIDTH attributes on the icons if we're FancyIndexing).
+ */
+static void emit_preamble(request_rec *r, int xhtml, const char *title)
+{
+    autoindex_config_rec *d;
+
+    d = (autoindex_config_rec *) ap_get_module_config(r->per_dir_config,
+                                                      &autoindex_module);
+
+    if (xhtml) {
+        ap_rvputs(r, DOCTYPE_XHTML_1_0T,
+                  "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n"
+                  " <head>\n  <title>Index of ", title,
+                  "</title>\n", NULL);
+    } else {
+        ap_rvputs(r, DOCTYPE_HTML_3_2,
+                  "<html>\n <head>\n"
+                  "  <title>Index of ", title,
+                  "</title>\n", NULL);
+    }
+
+    if (d->style_sheet != NULL) {
+        ap_rvputs(r, "  <link rel=\"stylesheet\" href=\"", d->style_sheet,
+                "\" type=\"text/css\"", xhtml ? " />\n" : ">\n", NULL);
+    }
+    if (d->head_insert != NULL) {
+        ap_rputs(d->head_insert, r);
+    }
+    ap_rputs(" </head>\n <body>\n", r);
+}
+
+static void push_item(apr_array_header_t *arr, char *type, const char *to,
+                      const char *path, const char *data)
+{
+    struct item *p = (struct item *) apr_array_push(arr);
+
+    if (!to) {
+        to = "";
+    }
+    if (!path) {
+        path = "";
+    }
+
+    p->type = type;
+    p->data = apr_pstrdup(arr->pool, data);
+    p->apply_path = apr_pstrcat(arr->pool, path, "*", NULL);
+
+    if ((type == BY_PATH) && (!ap_is_matchexp(to))) {
+        p->apply_to = apr_pstrcat(arr->pool, "*", to, NULL);
+    }
+    else {
+        p->apply_to = apr_pstrdup(arr->pool, to);
+    }
+}
+
+static const char *add_alt(cmd_parms *cmd, void *d, const char *alt,
+                           const char *to)
+{
+    if (cmd->info == BY_PATH) {
+        if (!strcmp(to, "**DIRECTORY**")) {
+            to = "^^DIRECTORY^^";
+        }
+    }
+    if (cmd->info == BY_ENCODING) {
+        char *tmp = apr_pstrdup(cmd->temp_pool, to);
+        ap_str_tolower(tmp);
+        to = tmp;
+    }
+
+    push_item(((autoindex_config_rec *) d)->alt_list, cmd->info, to,
+              cmd->path, alt);
+    return NULL;
+}
+
+static const char *add_icon(cmd_parms *cmd, void *d, const char *icon,
+                            const char *to)
+{
+    char *iconbak = apr_pstrdup(cmd->temp_pool, icon);
+
+    if (icon[0] == '(') {
+        char *alt;
+        char *cl = strchr(iconbak, ')');
+
+        if (cl == NULL) {
+            return "missing closing paren";
+        }
+        alt = ap_getword_nc(cmd->temp_pool, &iconbak, ',');
+        *cl = '\0';                             /* Lose closing paren */
+        add_alt(cmd, d, &alt[1], to);
+    }
+    if (cmd->info == BY_PATH) {
+        if (!strcmp(to, "**DIRECTORY**")) {
+            to = "^^DIRECTORY^^";
+        }
+    }
+    if (cmd->info == BY_ENCODING) {
+        char *tmp = apr_pstrdup(cmd->temp_pool, to);
+        ap_str_tolower(tmp);
+        to = tmp;
+    }
+
+    push_item(((autoindex_config_rec *) d)->icon_list, cmd->info, to,
+              cmd->path, iconbak);
+    return NULL;
+}
+
+/*
+ * Add description text for a filename pattern.  If the pattern has
+ * wildcards already (or we need to add them), add leading and
+ * trailing wildcards to it to ensure substring processing.  If the
+ * pattern contains a '/' anywhere, force wildcard matching mode,
+ * add a slash to the prefix so that "bar/bletch" won't be matched
+ * by "foobar/bletch", and make a note that there's a delimiter;
+ * the matching routine simplifies to just the actual filename
+ * whenever it can.  This allows definitions in parent directories
+ * to be made for files in subordinate ones using relative paths.
+ */
+
+/*
+ * Absent a strcasestr() function, we have to force wildcards on
+ * systems for which "AAA" and "aaa" mean the same file.
+ */
+#ifdef CASE_BLIND_FILESYSTEM
+#define WILDCARDS_REQUIRED 1
+#else
+#define WILDCARDS_REQUIRED 0
+#endif
+
+static const char *add_desc(cmd_parms *cmd, void *d, const char *desc,
+                            const char *to)
+{
+    autoindex_config_rec *dcfg = (autoindex_config_rec *) d;
+    ai_desc_t *desc_entry;
+    char *prefix = "";
+
+    desc_entry = (ai_desc_t *) apr_array_push(dcfg->desc_list);
+    desc_entry->full_path = (ap_strchr_c(to, '/') == NULL) ? 0 : 1;
+    desc_entry->wildcards = (WILDCARDS_REQUIRED
+                             || desc_entry->full_path
+                             || apr_fnmatch_test(to));
+    if (desc_entry->wildcards) {
+        prefix = desc_entry->full_path ? "*/" : "*";
+        desc_entry->pattern = apr_pstrcat(dcfg->desc_list->pool,
+                                          prefix, to, "*", NULL);
+    }
+    else {
+        desc_entry->pattern = apr_pstrdup(dcfg->desc_list->pool, to);
+    }
+    desc_entry->description = apr_pstrdup(dcfg->desc_list->pool, desc);
+    return NULL;
+}
+
+static const char *add_ignore(cmd_parms *cmd, void *d, const char *ext)
+{
+    push_item(((autoindex_config_rec *) d)->ign_list, 0, ext, cmd->path, NULL);
+    return NULL;
+}
+
+static const char *add_opts(cmd_parms *cmd, void *d, int argc, char *const argv[])
+{
+    int i;
+    char *w;
+    apr_int32_t opts;
+    apr_int32_t opts_add;
+    apr_int32_t opts_remove;
+    char action;
+    autoindex_config_rec *d_cfg = (autoindex_config_rec *) d;
+
+    opts = d_cfg->opts;
+    opts_add = d_cfg->incremented_opts;
+    opts_remove = d_cfg->decremented_opts;
+
+    for (i = 0; i < argc; i++) {
+        int option = 0;
+        w = argv[i];
+
+        if ((*w == '+') || (*w == '-')) {
+            action = *(w++);
+        }
+        else {
+            action = '\0';
+        }
+        if (!strcasecmp(w, "FancyIndexing")) {
+            option = FANCY_INDEXING;
+        }
+        else if (!strcasecmp(w, "FoldersFirst")) {
+            option = FOLDERS_FIRST;
+        }
+        else if (!strcasecmp(w, "HTMLTable")) {
+            option = TABLE_INDEXING;
+        }
+        else if (!strcasecmp(w, "IconsAreLinks")) {
+            option = ICONS_ARE_LINKS;
+        }
+        else if (!strcasecmp(w, "IgnoreCase")) {
+            option = IGNORE_CASE;
+        }
+        else if (!strcasecmp(w, "IgnoreClient")) {
+            option = IGNORE_CLIENT;
+        }
+        else if (!strcasecmp(w, "ScanHTMLTitles")) {
+            option = SCAN_HTML_TITLES;
+        }
+        else if (!strcasecmp(w, "SuppressColumnSorting")) {
+            option = SUPPRESS_COLSORT;
+        }
+        else if (!strcasecmp(w, "SuppressDescription")) {
+            option = SUPPRESS_DESC;
+        }
+        else if (!strcasecmp(w, "SuppressHTMLPreamble")) {
+            option = SUPPRESS_PREAMBLE;
+        }
+        else if (!strcasecmp(w, "SuppressIcon")) {
+            option = SUPPRESS_ICON;
+        }
+        else if (!strcasecmp(w, "SuppressLastModified")) {
+            option = SUPPRESS_LAST_MOD;
+        }
+        else if (!strcasecmp(w, "SuppressSize")) {
+            option = SUPPRESS_SIZE;
+        }
+        else if (!strcasecmp(w, "SuppressRules")) {
+            option = SUPPRESS_RULES;
+        }
+        else if (!strcasecmp(w, "TrackModified")) {
+            option = TRACK_MODIFIED;
+        }
+        else if (!strcasecmp(w, "VersionSort")) {
+            option = VERSION_SORT;
+        }
+        else if (!strcasecmp(w, "XHTML")) {
+            option = EMIT_XHTML;
+        }
+        else if (!strcasecmp(w, "ShowForbidden")) {
+            option = SHOW_FORBIDDEN;
+        }
+        else if (!strcasecmp(w, "AddAltClass")) {
+            option = ADDALTCLASS;
+        }
+        else if (!strcasecmp(w, "None")) {
+            if (action != '\0') {
+                return "Cannot combine '+' or '-' with 'None' keyword";
+            }
+            opts = NO_OPTIONS;
+            opts_add = 0;
+            opts_remove = 0;
+        }
+        else if (!strcasecmp(w, "IconWidth")) {
+            if (action != '-') {
+                d_cfg->icon_width = DEFAULT_ICON_WIDTH;
+            }
+            else {
+                d_cfg->icon_width = 0;
+            }
+        }
+        else if (!strncasecmp(w, "IconWidth=", 10)) {
+            if (action == '-') {
+                return "Cannot combine '-' with IconWidth=n";
+            }
+            d_cfg->icon_width = atoi(&w[10]);
+        }
+        else if (!strcasecmp(w, "IconHeight")) {
+            if (action != '-') {
+                d_cfg->icon_height = DEFAULT_ICON_HEIGHT;
+            }
+            else {
+                d_cfg->icon_height = 0;
+            }
+        }
+        else if (!strncasecmp(w, "IconHeight=", 11)) {
+            if (action == '-') {
+                return "Cannot combine '-' with IconHeight=n";
+            }
+            d_cfg->icon_height = atoi(&w[11]);
+        }
+        else if (!strcasecmp(w, "NameWidth")) {
+            if (action != '-') {
+                return "NameWidth with no value may only appear as "
+                       "'-NameWidth'";
+            }
+            d_cfg->name_width = DEFAULT_NAME_WIDTH;
+            d_cfg->name_adjust = K_NOADJUST;
+        }
+        else if (!strncasecmp(w, "NameWidth=", 10)) {
+            if (action == '-') {
+                return "Cannot combine '-' with NameWidth=n";
+            }
+            if (w[10] == '*') {
+                d_cfg->name_adjust = K_ADJUST;
+            }
+            else {
+                int width = atoi(&w[10]);
+
+                if (width && (width < 5)) {
+                    return "NameWidth value must be greater than 5";
+                }
+                d_cfg->name_width = width;
+                d_cfg->name_adjust = K_NOADJUST;
+            }
+        }
+        else if (!strcasecmp(w, "DescriptionWidth")) {
+            if (action != '-') {
+                return "DescriptionWidth with no value may only appear as "
+                       "'-DescriptionWidth'";
+            }
+            d_cfg->desc_width = DEFAULT_DESC_WIDTH;
+            d_cfg->desc_adjust = K_NOADJUST;
+        }
+        else if (!strncasecmp(w, "DescriptionWidth=", 17)) {
+            if (action == '-') {
+                return "Cannot combine '-' with DescriptionWidth=n";
+            }
+            if (w[17] == '*') {
+                d_cfg->desc_adjust = K_ADJUST;
+            }
+            else {
+                int width = atoi(&w[17]);
+
+                if (width && (width < 12)) {
+                    return "DescriptionWidth value must be greater than 12";
+                }
+                d_cfg->desc_width = width;
+                d_cfg->desc_adjust = K_NOADJUST;
+            }
+        }
+        else if (!strncasecmp(w, "Type=", 5)) {
+            d_cfg->ctype = apr_pstrdup(cmd->pool, &w[5]);
+        }
+        else if (!strncasecmp(w, "Charset=", 8)) {
+            d_cfg->charset = apr_pstrdup(cmd->pool, &w[8]);
+        }
+        else if (!strcasecmp(w, "UseOldDateFormat")) {
+            d_cfg->datetime_format = "%d-%b-%Y %H:%M";
+        }
+        else {
+            return "Invalid directory indexing option";
+        }
+        if (action == '\0') {
+            opts |= option;
+            opts_add = 0;
+            opts_remove = 0;
+        }
+        else if (action == '+') {
+            opts_add |= option;
+            opts_remove &= ~option;
+        }
+        else {
+            opts_remove |= option;
+            opts_add &= ~option;
+        }
+    }
+    if ((opts & NO_OPTIONS) && (opts & ~NO_OPTIONS)) {
+        return "Cannot combine other IndexOptions keywords with 'None'";
+    }
+    d_cfg->incremented_opts = opts_add;
+    d_cfg->decremented_opts = opts_remove;
+    d_cfg->opts = opts;
+    return NULL;
+}
+
+static const char *set_default_order(cmd_parms *cmd, void *m,
+                                     const char *direction, const char *key)
+{
+    autoindex_config_rec *d_cfg = (autoindex_config_rec *) m;
+
+    if (!strcasecmp(direction, "Ascending")) {
+        d_cfg->default_direction = D_ASCENDING;
+    }
+    else if (!strcasecmp(direction, "Descending")) {
+        d_cfg->default_direction = D_DESCENDING;
+    }
+    else {
+        return "First keyword must be 'Ascending' or 'Descending'";
+    }
+
+    if (!strcasecmp(key, "Name")) {
+        d_cfg->default_keyid = K_NAME;
+    }
+    else if (!strcasecmp(key, "Date")) {
+        d_cfg->default_keyid = K_LAST_MOD;
+    }
+    else if (!strcasecmp(key, "Size")) {
+        d_cfg->default_keyid = K_SIZE;
+    }
+    else if (!strcasecmp(key, "Description")) {
+        d_cfg->default_keyid = K_DESC;
+    }
+    else {
+        return "Second keyword must be 'Name', 'Date', 'Size', or "
+               "'Description'";
+    }
+
+    return NULL;
+}
+
+#define DIR_CMD_PERMS OR_INDEXES
+
+static const command_rec autoindex_cmds[] =
+{
+    AP_INIT_ITERATE2("AddIcon", add_icon, BY_PATH, DIR_CMD_PERMS,
+                     "an icon URL followed by one or more filenames"),
+    AP_INIT_ITERATE2("AddIconByType", add_icon, BY_TYPE, DIR_CMD_PERMS,
+                     "an icon URL followed by one or more MIME types"),
+    AP_INIT_ITERATE2("AddIconByEncoding", add_icon, BY_ENCODING, DIR_CMD_PERMS,
+                     "an icon URL followed by one or more content encodings"),
+    AP_INIT_ITERATE2("AddAlt", add_alt, BY_PATH, DIR_CMD_PERMS,
+                     "alternate descriptive text followed by one or more "
+                     "filenames"),
+    AP_INIT_ITERATE2("AddAltByType", add_alt, BY_TYPE, DIR_CMD_PERMS,
+                     "alternate descriptive text followed by one or more MIME "
+                     "types"),
+    AP_INIT_ITERATE2("AddAltByEncoding", add_alt, BY_ENCODING, DIR_CMD_PERMS,
+                     "alternate descriptive text followed by one or more "
+                     "content encodings"),
+    AP_INIT_TAKE_ARGV("IndexOptions", add_opts, NULL, DIR_CMD_PERMS,
+                      "one or more index options [+|-][]"),
+    AP_INIT_TAKE2("IndexOrderDefault", set_default_order, NULL, DIR_CMD_PERMS,
+                  "{Ascending,Descending} {Name,Size,Description,Date}"),
+    AP_INIT_ITERATE("IndexIgnore", add_ignore, NULL, DIR_CMD_PERMS,
+                    "one or more file extensions"),
+    AP_INIT_FLAG("IndexIgnoreReset", ap_set_flag_slot,
+                 (void *)APR_OFFSETOF(autoindex_config_rec, ign_noinherit),
+                 DIR_CMD_PERMS,
+                 "Reset the inherited list of IndexIgnore filenames"),
+    AP_INIT_ITERATE2("AddDescription", add_desc, BY_PATH, DIR_CMD_PERMS,
+                     "Descriptive text followed by one or more filenames"),
+    AP_INIT_TAKE1("HeaderName", ap_set_string_slot,
+                  (void *)APR_OFFSETOF(autoindex_config_rec, header),
+                  DIR_CMD_PERMS, "a filename"),
+    AP_INIT_TAKE1("ReadmeName", ap_set_string_slot,
+                  (void *)APR_OFFSETOF(autoindex_config_rec, readme),
+                  DIR_CMD_PERMS, "a filename"),
+    AP_INIT_RAW_ARGS("FancyIndexing", ap_set_deprecated, NULL, OR_ALL,
+                     "The FancyIndexing directive is no longer supported. "
+                     "Use IndexOptions FancyIndexing."),
+    AP_INIT_TAKE1("DefaultIcon", ap_set_string_slot,
+                  (void *)APR_OFFSETOF(autoindex_config_rec, default_icon),
+                  DIR_CMD_PERMS, "an icon URL"),
+    AP_INIT_TAKE1("IndexStyleSheet", ap_set_string_slot,
+                  (void *)APR_OFFSETOF(autoindex_config_rec, style_sheet),
+                  DIR_CMD_PERMS, "URL to style sheet"),
+    AP_INIT_TAKE1("IndexHeadInsert", ap_set_string_slot,
+                  (void *)APR_OFFSETOF(autoindex_config_rec, head_insert),
+                  DIR_CMD_PERMS, "String to insert in HTML HEAD section"),
+    {NULL}
+};
+
+static void *create_autoindex_config(apr_pool_t *p, char *dummy)
+{
+    autoindex_config_rec *new =
+    (autoindex_config_rec *) apr_pcalloc(p, sizeof(autoindex_config_rec));
+
+    new->icon_width = 0;
+    new->icon_height = 0;
+    new->name_width = DEFAULT_NAME_WIDTH;
+    new->name_adjust = K_UNSET;
+    new->desc_width = DEFAULT_DESC_WIDTH;
+    new->desc_adjust = K_UNSET;
+    new->icon_list = apr_array_make(p, 4, sizeof(struct item));
+    new->alt_list = apr_array_make(p, 4, sizeof(struct item));
+    new->desc_list = apr_array_make(p, 4, sizeof(ai_desc_t));
+    new->ign_list = apr_array_make(p, 4, sizeof(struct item));
+    new->opts = OPTION_UNSET;
+    new->incremented_opts = 0;
+    new->decremented_opts = 0;
+    new->default_keyid = '\0';
+    new->default_direction = '\0';
+
+    return (void *) new;
+}
+
+static void *merge_autoindex_configs(apr_pool_t *p, void *basev, void *addv)
+{
+    autoindex_config_rec *new;
+    autoindex_config_rec *base = (autoindex_config_rec *) basev;
+    autoindex_config_rec *add = (autoindex_config_rec *) addv;
+
+    new = (autoindex_config_rec *) apr_pcalloc(p, sizeof(autoindex_config_rec));
+    new->default_icon = add->default_icon ? add->default_icon
+                                          : base->default_icon;
+    new->style_sheet = add->style_sheet ? add->style_sheet
+                                          : base->style_sheet;
+    new->head_insert = add->head_insert ? add->head_insert
+                                          : base->head_insert;
+    new->header = add->header ? add->header
+                                : base->header;
+    new->readme = add->readme ? add->readme
+                                : base->readme;
+    new->icon_height = add->icon_height ? add->icon_height : base->icon_height;
+    new->icon_width = add->icon_width ? add->icon_width : base->icon_width;
+
+    new->ctype = add->ctype ? add->ctype : base->ctype;
+    new->charset = add->charset ? add->charset : base->charset;
+    new->datetime_format = add->datetime_format ? add->datetime_format : base->datetime_format;
+
+    new->alt_list = apr_array_append(p, add->alt_list, base->alt_list);
+    new->desc_list = apr_array_append(p, add->desc_list, base->desc_list);
+    new->icon_list = apr_array_append(p, add->icon_list, base->icon_list);
+    new->ign_list = add->ign_noinherit ? add->ign_list : apr_array_append(p, add->ign_list, base->ign_list);
+    if (add->opts == NO_OPTIONS) {
+        /*
+         * If the current directory explicitly says 'no options' then we also
+         * clear any incremental mods from being inheritable further down.
+         */
+        new->opts = NO_OPTIONS;
+        new->incremented_opts = 0;
+        new->decremented_opts = 0;
+    }
+    else {
+        /*
+         * If there were any nonincremental options selected for
+         * this directory, they dominate and we don't inherit *anything.*
+         * Contrariwise, we *do* inherit if the only settings here are
+         * incremental ones.
+         */
+        if (add->opts == OPTION_UNSET) {
+            new->incremented_opts = (base->incremented_opts
+                                     | add->incremented_opts)
+                                    & ~add->decremented_opts;
+            new->decremented_opts = (base->decremented_opts
+                                     | add->decremented_opts);
+            /*
+             * We may have incremental settings, so make sure we don't
+             * inadvertently inherit an IndexOptions None from above.
+             */
+            new->opts = (base->opts & ~NO_OPTIONS);
+        }
+        else {
+            /*
+             * There are local nonincremental settings, which clear
+             * all inheritance from above.  They *are* the new base settings.
+             */
+            new->opts = add->opts;
+        }
+        /*
+         * We're guaranteed that there'll be no overlap between
+         * the add-options and the remove-options.
+         */
+        new->opts |= new->incremented_opts;
+        new->opts &= ~new->decremented_opts;
+    }
+    /*
+     * Inherit the NameWidth settings if there aren't any specific to
+     * the new location; otherwise we'll end up using the defaults set in the
+     * config-rec creation routine.
+     */
+    if (add->name_adjust == K_UNSET) {
+        new->name_width = base->name_width;
+        new->name_adjust = base->name_adjust;
+    }
+    else {
+        new->name_width = add->name_width;
+        new->name_adjust = add->name_adjust;
+    }
+
+    /*
+     * Likewise for DescriptionWidth.
+     */
+    if (add->desc_adjust == K_UNSET) {
+        new->desc_width = base->desc_width;
+        new->desc_adjust = base->desc_adjust;
+    }
+    else {
+        new->desc_width = add->desc_width;
+        new->desc_adjust = add->desc_adjust;
+    }
+
+    new->default_keyid = add->default_keyid ? add->default_keyid
+                                            : base->default_keyid;
+    new->default_direction = add->default_direction ? add->default_direction
+                                                    : base->default_direction;
+    return new;
+}
+
+/****************************************************************
+ *
+ * Looking things up in config entries...
+ */
+
+/* Structure used to hold entries when we're actually building an index */
+
+struct ent {
+    char *name;
+    char *icon;
+    char *alt;
+    char *desc;
+    apr_off_t size;
+    apr_time_t lm;
+    struct ent *next;
+    int ascending, ignore_case, version_sort;
+    char key;
+    int isdir;
+};
+
+static char *find_item(const char *content_type, const char *content_encoding,
+                       char *path, apr_array_header_t *list, int path_only)
+{
+    struct item *items = (struct item *) list->elts;
+    int i;
+
+    for (i = 0; i < list->nelts; ++i) {
+        struct item *p = &items[i];
+
+        /* Special cased for ^^DIRECTORY^^ and ^^BLANKICON^^ */
+        if ((path[0] == '^') || (!ap_strcmp_match(path, p->apply_path))) {
+            if (!*(p->apply_to)) {
+                return p->data;
+            }
+            else if (p->type == BY_PATH || path[0] == '^') {
+                if (!ap_strcmp_match(path, p->apply_to)) {
+                    return p->data;
+                }
+            }
+            else if (!path_only) {
+                if (!content_encoding) {
+                    if (p->type == BY_TYPE) {
+                        if (content_type
+                            && !ap_strcasecmp_match(content_type,
+                                                    p->apply_to)) {
+                            return p->data;
+                        }
+                    }
+                }
+                else {
+                    if (p->type == BY_ENCODING) {
+                        if (!ap_strcasecmp_match(content_encoding,
+                                                 p->apply_to)) {
+                            return p->data;
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return NULL;
+}
+
+static char *find_item_by_request(request_rec *r, apr_array_header_t *list, int path_only)
+{
+    return find_item(ap_field_noparam(r->pool, r->content_type),
+                     r->content_encoding, r->filename, list, path_only);
+}
+
+#define find_icon(d,p,t) find_item_by_request(p,d->icon_list,t)
+#define find_alt(d,p,t) find_item_by_request(p,d->alt_list,t)
+#define find_default_icon(d,n) find_item(NULL, NULL, n, d->icon_list, 1)
+#define find_default_alt(d,n) find_item(NULL, NULL, n, d->alt_list, 1)
+
+/*
+ * Look through the list of pattern/description pairs and return the first one
+ * if any) that matches the filename in the request.  If multiple patterns
+ * match, only the first one is used; since the order in the array is the
+ * same as the order in which directives were processed, earlier matching
+ * directives will dominate.
+ */
+
+#ifdef CASE_BLIND_FILESYSTEM
+#define MATCH_FLAGS APR_FNM_CASE_BLIND
+#else
+#define MATCH_FLAGS 0
+#endif
+
+static char *find_desc(autoindex_config_rec *dcfg, const char *filename_full)
+{
+    int i;
+    ai_desc_t *list = (ai_desc_t *) dcfg->desc_list->elts;
+    const char *filename_only;
+    const char *filename;
+
+    /*
+     * If the filename includes a path, extract just the name itself
+     * for the simple matches.
+     */
+    if ((filename_only = ap_strrchr_c(filename_full, '/')) == NULL) {
+        filename_only = filename_full;
+    }
+    else {
+        filename_only++;
+    }
+    for (i = 0; i < dcfg->desc_list->nelts; ++i) {
+        ai_desc_t *tuple = &list[i];
+        int found;
+
+        /*
+         * Only use the full-path filename if the pattern contains '/'s.
+         */
+        filename = (tuple->full_path) ? filename_full : filename_only;
+        /*
+         * Make the comparison using the cheapest method; only do
+         * wildcard checking if we must.
+         */
+        if (tuple->wildcards) {
+            found = (apr_fnmatch(tuple->pattern, filename, MATCH_FLAGS) == 0);
+        }
+        else {
+            found = (ap_strstr_c(filename, tuple->pattern) != NULL);
+        }
+        if (found) {
+            return tuple->description;
+        }
+    }
+    return NULL;
+}
+
+static int ignore_entry(autoindex_config_rec *d, char *path)
+{
+    apr_array_header_t *list = d->ign_list;
+    struct item *items = (struct item *) list->elts;
+    char *tt;
+    int i;
+
+    if ((tt = strrchr(path, '/')) == NULL) {
+        tt = path;
+    }
+    else {
+        tt++;
+    }
+
+    for (i = 0; i < list->nelts; ++i) {
+        struct item *p = &items[i];
+        char *ap;
+
+        if ((ap = strrchr(p->apply_to, '/')) == NULL) {
+            ap = p->apply_to;
+        }
+        else {
+            ap++;
+        }
+
+#ifndef CASE_BLIND_FILESYSTEM
+        if (!ap_strcmp_match(path, p->apply_path)
+            && !ap_strcmp_match(tt, ap)) {
+            return 1;
+        }
+#else  /* !CASE_BLIND_FILESYSTEM */
+        /*
+         * On some platforms, the match must be case-blind.  This is really
+         * a factor of the filesystem involved, but we can't detect that
+         * reliably - so we have to granularise at the OS level.
+         */
+        if (!ap_strcasecmp_match(path, p->apply_path)
+            && !ap_strcasecmp_match(tt, ap)) {
+            return 1;
+        }
+#endif /* !CASE_BLIND_FILESYSTEM */
+    }
+    return 0;
+}
+
+/*****************************************************************
+ *
+ * Actually generating output
+ */
+
+/*
+ * Elements of the emitted document:
+ *      Preamble
+ *              Emitted unless SUPPRESS_PREAMBLE is set AND ap_run_sub_req
+ *              succeeds for the (content_type == text/html) header file.
+ *      Header file
+ *              Emitted if found (and able).
+ *      H1 tag line
+ *              Emitted if a header file is NOT emitted.
+ *      Directory stuff
+ *              Always emitted.
+ *      HR
+ *              Emitted if FANCY_INDEXING is set.
+ *      Readme file
+ *              Emitted if found (and able).
+ *      ServerSig
+ *              Emitted if ServerSignature is not Off AND a readme file
+ *              is NOT emitted.
+ *      Postamble
+ *              Emitted unless SUPPRESS_PREAMBLE is set AND ap_run_sub_req
+ *              succeeds for the (content_type == text/html) readme file.
+ */
+
+
+/*
+ * emit a plain text file
+ */
+static void do_emit_plain(request_rec *r, apr_file_t *f)
+{
+    char buf[AP_IOBUFSIZE + 1];
+    int ch;
+    apr_size_t i, c, n;
+    apr_status_t rv;
+
+    ap_rputs("<pre>\n", r);
+    while (!apr_file_eof(f)) {
+        do {
+            n = sizeof(char) * AP_IOBUFSIZE;
+            rv = apr_file_read(f, buf, &n);
+        } while (APR_STATUS_IS_EINTR(rv));
+        if (n == 0 || rv != APR_SUCCESS) {
+            /* ###: better error here? */
+            break;
+        }
+        buf[n] = '\0';
+        c = 0;
+        while (c < n) {
+            for (i = c; i < n; i++) {
+                if (buf[i] == '<' || buf[i] == '>' || buf[i] == '&') {
+                    break;
+                }
+            }
+            ch = buf[i];
+            buf[i] = '\0';
+            ap_rputs(&buf[c], r);
+            if (ch == '<') {
+                ap_rputs("&lt;", r);
+            }
+            else if (ch == '>') {
+                ap_rputs("&gt;", r);
+            }
+            else if (ch == '&') {
+                ap_rputs("&amp;", r);
+            }
+            c = i + 1;
+        }
+    }
+    ap_rputs("</pre>\n", r);
+}
+
+/*
+ * Handle the preamble through the H1 tag line, inclusive.  Locate
+ * the file with a subrequests.  Process text/html documents by actually
+ * running the subrequest; text/xxx documents get copied verbatim,
+ * and any other content type is ignored.  This means that a non-text
+ * document (such as HEADER.gif) might get multiviewed as the result
+ * instead of a text document, meaning nothing will be displayed, but
+ * oh well.
+ */
+static void emit_head(request_rec *r, char *header_fname, int suppress_amble,
+                      int emit_xhtml, char *title)
+{
+    autoindex_config_rec *d;
+    apr_table_t *hdrs = r->headers_in;
+    apr_file_t *f = NULL;
+    request_rec *rr = NULL;
+    int emit_amble = 1;
+    int emit_H1 = 1;
+    const char *r_accept;
+    const char *r_accept_enc;
+
+    /*
+     * If there's a header file, send a subrequest to look for it.  If it's
+     * found and html do the subrequest, otherwise handle it
+     */
+    r_accept = apr_table_get(hdrs, "Accept");
+    r_accept_enc = apr_table_get(hdrs, "Accept-Encoding");
+    apr_table_setn(hdrs, "Accept", "text/html, text/plain");
+    apr_table_unset(hdrs, "Accept-Encoding");
+
+
+    if ((header_fname != NULL) && r->args) {
+        header_fname = apr_pstrcat(r->pool, header_fname, "?", r->args, NULL);
+    }
+
+    if ((header_fname != NULL)
+        && (rr = ap_sub_req_lookup_uri(header_fname, r, r->output_filters))
+        && (rr->status == HTTP_OK)
+        && (rr->filename != NULL)
+        && (rr->finfo.filetype == APR_REG)) {
+        /*
+         * Check for the two specific cases we allow: text/html and
+         * text/anything-else.  The former is allowed to be processed for
+         * SSIs.
+         */
+        if (rr->content_type != NULL) {
+            if (response_is_html(rr)) {
+                ap_filter_t *f;
+               /* Hope everything will work... */
+                emit_amble = 0;
+                emit_H1 = 0;
+
+                if (! suppress_amble) {
+                    emit_preamble(r, emit_xhtml, title);
+                }
+                /* This is a hack, but I can't find any better way to do this.
+                 * The problem is that we have already created the sub-request,
+                 * but we just inserted the OLD_WRITE filter, and the
+                 * sub-request needs to pass its data through the OLD_WRITE
+                 * filter, or things go horribly wrong (missing data, data in
+                 * the wrong order, etc).  To fix it, if you create a
+                 * sub-request and then insert the OLD_WRITE filter before you
+                 * run the request, you need to make sure that the sub-request
+                 * data goes through the OLD_WRITE filter.  Just steal this
+                 * code.  The long-term solution is to remove the ap_r*
+                 * functions.
+                 */
+                for (f=rr->output_filters;
+                     f->frec != ap_subreq_core_filter_handle; f = f->next);
+                f->next = r->output_filters;
+
+                /*
+                 * If there's a problem running the subrequest, display the
+                 * preamble if we didn't do it before -- the header file
+                 * didn't get displayed.
+                 */
+                if (ap_run_sub_req(rr) != OK) {
+                    /* It didn't work */
+                    emit_amble = suppress_amble;
+                    emit_H1 = 1;
+                }
+            }
+            else if (!ap_cstr_casecmpn("text/", rr->content_type, 5)) {
+                /*
+                 * If we can open the file, prefix it with the preamble
+                 * regardless; since we'll be sending a <pre> block around
+                 * the file's contents, any HTML header it had won't end up
+                 * where it belongs.
+                 */
+                if (apr_file_open(&f, rr->filename, APR_READ,
+                                  APR_OS_DEFAULT, r->pool) == APR_SUCCESS) {
+                    emit_preamble(r, emit_xhtml, title);
+                    emit_amble = 0;
+                    do_emit_plain(r, f);
+                    apr_file_close(f);
+                    emit_H1 = 0;
+                }
+            }
+        }
+    }
+
+    if (r_accept) {
+        apr_table_setn(hdrs, "Accept", r_accept);
+    }
+    else {
+        apr_table_unset(hdrs, "Accept");
+    }
+
+    if (r_accept_enc) {
+        apr_table_setn(hdrs, "Accept-Encoding", r_accept_enc);
+    }
+
+    if (emit_amble) {
+        emit_preamble(r, emit_xhtml, title);
+    }
+
+    d = (autoindex_config_rec *) ap_get_module_config(r->per_dir_config, &autoindex_module);
+
+    if (emit_H1) {
+        if (d->style_sheet != NULL) {
+            /* Insert style id if stylesheet used */
+            ap_rvputs(r, "  <h1 id=\"indextitle\">Index of ", title, "</h1>\n", NULL);
+        } else {
+            ap_rvputs(r, "<h1>Index of ", title, "</h1>\n", NULL);
+        }
+    }
+    if (rr != NULL) {
+        ap_destroy_sub_req(rr);
+    }
+}
+
+
+/*
+ * Handle the Readme file through the postamble, inclusive.  Locate
+ * the file with a subrequests.  Process text/html documents by actually
+ * running the subrequest; text/xxx documents get copied verbatim,
+ * and any other content type is ignored.  This means that a non-text
+ * document (such as FOOTER.gif) might get multiviewed as the result
+ * instead of a text document, meaning nothing will be displayed, but
+ * oh well.
+ */
+static void emit_tail(request_rec *r, char *readme_fname, int suppress_amble)
+{
+    apr_file_t *f = NULL;
+    request_rec *rr = NULL;
+    int suppress_post = 0;
+    int suppress_sig = 0;
+
+    /*
+     * If there's a readme file, send a subrequest to look for it.  If it's
+     * found and a text file, handle it -- otherwise fall through and
+     * pretend there's nothing there.
+     */
+    if ((readme_fname != NULL)
+        && (rr = ap_sub_req_lookup_uri(readme_fname, r, r->output_filters))
+        && (rr->status == HTTP_OK)
+        && (rr->filename != NULL)
+        && rr->finfo.filetype == APR_REG) {
+        /*
+         * Check for the two specific cases we allow: text/html and
+         * text/anything-else.  The former is allowed to be processed for
+         * SSIs.
+         */
+        if (rr->content_type != NULL) {
+            if (response_is_html(rr)) {
+                ap_filter_t *f;
+                for (f=rr->output_filters;
+                     f->frec != ap_subreq_core_filter_handle; f = f->next);
+                f->next = r->output_filters;
+
+
+                if (ap_run_sub_req(rr) == OK) {
+                    /* worked... */
+                    suppress_sig = 1;
+                    suppress_post = suppress_amble;
+                }
+            }
+            else if (!ap_cstr_casecmpn("text/", rr->content_type, 5)) {
+                /*
+                 * If we can open the file, suppress the signature.
+                 */
+                if (apr_file_open(&f, rr->filename, APR_READ,
+                                  APR_OS_DEFAULT, r->pool) == APR_SUCCESS) {
+                    do_emit_plain(r, f);
+                    apr_file_close(f);
+                    suppress_sig = 1;
+                }
+            }
+        }
+    }
+
+    if (!suppress_sig) {
+        ap_rputs(ap_psignature("", r), r);
+    }
+    if (!suppress_post) {
+        ap_rputs("</body></html>\n", r);
+    }
+    if (rr != NULL) {
+        ap_destroy_sub_req(rr);
+    }
+}
+
+
+static char *find_title(request_rec *r)
+{
+    char titlebuf[MAX_STRING_LEN], *find = "<title>";
+    apr_file_t *thefile = NULL;
+    int x, y, p;
+    apr_size_t n;
+
+    if (r->status != HTTP_OK) {
+        return NULL;
+    }
+    if ((r->content_type != NULL)
+        && (response_is_html(r)
+            || !strcmp(r->content_type, INCLUDES_MAGIC_TYPE))
+        && !r->content_encoding) {
+        if (apr_file_open(&thefile, r->filename, APR_READ,
+                          APR_OS_DEFAULT, r->pool) != APR_SUCCESS) {
+            return NULL;
+        }
+        n = sizeof(char) * (MAX_STRING_LEN - 1);
+        apr_file_read(thefile, titlebuf, &n);
+        if (n == 0) {
+            apr_file_close(thefile);
+            return NULL;
+        }
+        titlebuf[n] = '\0';
+        for (x = 0, p = 0; titlebuf[x]; x++) {
+            if (apr_tolower(titlebuf[x]) == find[p]) {
+                if (!find[++p]) {
+                    if ((p = ap_ind(&titlebuf[++x], '<')) != -1) {
+                        titlebuf[x + p] = '\0';
+                    }
+                    /* Scan for line breaks for Tanmoy's secretary */
+                    for (y = x; titlebuf[y]; y++) {
+                        if ((titlebuf[y] == CR) || (titlebuf[y] == LF)) {
+                            if (y == x) {
+                                x++;
+                            }
+                            else {
+                                titlebuf[y] = ' ';
+                            }
+                        }
+                    }
+                    apr_file_close(thefile);
+                    return apr_pstrdup(r->pool, &titlebuf[x]);
+                }
+            }
+            else {
+                p = 0;
+            }
+        }
+        apr_file_close(thefile);
+    }
+    return NULL;
+}
+
+static struct ent *make_parent_entry(apr_int32_t autoindex_opts,
+                                     autoindex_config_rec *d,
+                                     request_rec *r, char keyid,
+                                     char direction)
+{
+    struct ent *p = (struct ent *) apr_pcalloc(r->pool, sizeof(struct ent));
+    char *testpath;
+    /*
+     * p->name is now the true parent URI.
+     * testpath is a crafted lie, so that the syntax '/some/..'
+     * (or simply '..')be used to describe 'up' from '/some/'
+     * when processeing IndexIgnore, and Icon|Alt|Desc configs.
+     */
+
+    /* The output has always been to the parent.  Don't make ourself
+     * our own parent (worthless cyclical reference).
+     */
+    if (!(p->name = ap_make_full_path(r->pool, r->uri, "../"))) {
+        return (NULL);
+    }
+    if (!ap_normalize_path(p->name, AP_NORMALIZE_ALLOW_RELATIVE |
+                                    AP_NORMALIZE_NOT_ABOVE_ROOT)
+            || p->name[0] == '\0') {
+        return (NULL);
+    }
+
+    /* IndexIgnore has always compared "/thispath/.." */
+    testpath = ap_make_full_path(r->pool, r->filename, "..");
+    if (ignore_entry(d, testpath)) {
+        return (NULL);
+    }
+
+    p->size = -1;
+    p->lm = -1;
+    p->key = apr_toupper(keyid);
+    p->ascending = (apr_toupper(direction) == D_ASCENDING);
+    p->version_sort = autoindex_opts & VERSION_SORT;
+    if (autoindex_opts & FANCY_INDEXING) {
+        if (!(p->icon = find_default_icon(d, testpath))) {
+            p->icon = find_default_icon(d, "^^DIRECTORY^^");
+        }
+        if (!(p->alt = find_default_alt(d, testpath))) {
+            if (!(p->alt = find_default_alt(d, "^^DIRECTORY^^"))) {
+                /* Special alt text for parent dir to distinguish it from other directories
+                   this is essential when trying to style this dir entry via AddAltClass */
+                p->alt = "PARENTDIR";
+            }
+        }
+        p->desc = find_desc(d, testpath);
+    }
+    return p;
+}
+
+static struct ent *make_autoindex_entry(const apr_finfo_t *dirent,
+                                        int autoindex_opts,
+                                        autoindex_config_rec *d,
+                                        request_rec *r, char keyid,
+                                        char direction,
+                                        const char *pattern)
+{
+    request_rec *rr;
+    struct ent *p;
+    int show_forbidden = 0;
+
+    /* Dot is ignored, Parent is handled by make_parent_entry() */
+    if ((dirent->name[0] == '.') && (!dirent->name[1]
+        || ((dirent->name[1] == '.') && !dirent->name[2])))
+        return (NULL);
+
+    /*
+     * On some platforms, the match must be case-blind.  This is really
+     * a factor of the filesystem involved, but we can't detect that
+     * reliably - so we have to granularise at the OS level.
+     */
+    if (pattern && (apr_fnmatch(pattern, dirent->name,
+                                APR_FNM_NOESCAPE | APR_FNM_PERIOD
+#ifdef CASE_BLIND_FILESYSTEM
+                                | APR_FNM_CASE_BLIND
+#endif
+                                )
+                    != APR_SUCCESS)) {
+        return (NULL);
+    }
+
+    if (ignore_entry(d, ap_make_full_path(r->pool,
+                                          r->filename, dirent->name))) {
+        return (NULL);
+    }
+
+    if (!(rr = ap_sub_req_lookup_dirent(dirent, r, AP_SUBREQ_NO_ARGS, NULL))) {
+        return (NULL);
+    }
+
+    if ((autoindex_opts & SHOW_FORBIDDEN)
+        && (rr->status == HTTP_UNAUTHORIZED || rr->status == HTTP_FORBIDDEN)) {
+        show_forbidden = 1;
+    }
+
+    if ((rr->finfo.filetype != APR_DIR && rr->finfo.filetype != APR_REG)
+        || !(rr->status == OK || ap_is_HTTP_SUCCESS(rr->status)
+                              || ap_is_HTTP_REDIRECT(rr->status)
+                              || show_forbidden == 1)) {
+        ap_destroy_sub_req(rr);
+        return (NULL);
+    }
+
+    p = (struct ent *) apr_pcalloc(r->pool, sizeof(struct ent));
+    if (dirent->filetype == APR_DIR) {
+        p->name = apr_pstrcat(r->pool, dirent->name, "/", NULL);
+    }
+    else {
+        p->name = apr_pstrdup(r->pool, dirent->name);
+    }
+    p->size = -1;
+    p->icon = NULL;
+    p->alt = NULL;
+    p->desc = NULL;
+    p->lm = -1;
+    p->isdir = 0;
+    p->key = apr_toupper(keyid);
+    p->ascending = (apr_toupper(direction) == D_ASCENDING);
+    p->version_sort = !!(autoindex_opts & VERSION_SORT);
+    p->ignore_case = !!(autoindex_opts & IGNORE_CASE);
+
+    if (autoindex_opts & (FANCY_INDEXING | TABLE_INDEXING)) {
+        p->lm = rr->finfo.mtime;
+        if (dirent->filetype == APR_DIR) {
+            if (autoindex_opts & FOLDERS_FIRST) {
+                p->isdir = 1;
+            }
+            rr->filename = ap_make_dirstr_parent (rr->pool, rr->filename);
+
+            /* omit the trailing slash (1.3 compat) */
+            rr->filename[strlen(rr->filename) - 1] = '\0';
+
+            if (!(p->icon = find_icon(d, rr, 1))) {
+                p->icon = find_default_icon(d, "^^DIRECTORY^^");
+            }
+            if (!(p->alt = find_alt(d, rr, 1))) {
+                if (!(p->alt = find_default_alt(d, "^^DIRECTORY^^"))) {
+                    p->alt = "DIR";
+                }
+            }
+        }
+        else {
+            p->icon = find_icon(d, rr, 0);
+            p->alt = find_alt(d, rr, 0);
+            p->size = rr->finfo.size;
+        }
+
+        p->desc = find_desc(d, rr->filename);
+
+        if ((!p->desc) && (autoindex_opts & SCAN_HTML_TITLES)) {
+            p->desc = apr_pstrdup(r->pool, find_title(rr));
+        }
+    }
+    ap_destroy_sub_req(rr);
+    /*
+     * We don't need to take any special action for the file size key.
+     * If we did, it would go here.
+     */
+    if (keyid == K_LAST_MOD) {
+        if (p->lm < 0) {
+            p->lm = 0;
+        }
+    }
+    return (p);
+}
+
+static char *terminate_description(autoindex_config_rec *d, char *desc,
+                                   apr_int32_t autoindex_opts, int desc_width)
+{
+    int maxsize = desc_width;
+    int x;
+
+    /*
+     * If there's no DescriptionWidth in effect, default to the old
+     * behaviour of adjusting the description size depending upon
+     * what else is being displayed.  Otherwise, stick with the
+     * setting.
+     */
+    if (d->desc_adjust == K_UNSET) {
+        if (autoindex_opts & SUPPRESS_ICON) {
+            maxsize += 6;
+        }
+        if (autoindex_opts & SUPPRESS_LAST_MOD) {
+            maxsize += 19;
+        }
+        if (autoindex_opts & SUPPRESS_SIZE) {
+            maxsize += 7;
+        }
+    }
+    for (x = 0; desc[x] && ((maxsize > 0) || (desc[x] == '<')); x++) {
+        if (desc[x] == '<') {
+            while (desc[x] != '>') {
+                if (!desc[x]) {
+                    maxsize = 0;
+                    break;
+                }
+                ++x;
+            }
+        }
+        else if (desc[x] == '&') {
+            /* entities like &auml; count as one character */
+            --maxsize;
+            for ( ; desc[x] != ';'; ++x) {
+                if (desc[x] == '\0') {
+                     maxsize = 0;
+                     break;
+                }
+            }
+        }
+        else {
+            --maxsize;
+        }
+    }
+    if (!maxsize && desc[x] != '\0') {
+        desc[x - 1] = '>';      /* Grump. */
+        desc[x] = '\0';         /* Double Grump! */
+    }
+    return desc;
+}
+
+/*
+ * Emit the anchor for the specified field.  If a field is the key for the
+ * current request, the link changes its meaning to reverse the order when
+ * selected again.  Non-active fields always start in ascending order.
+ */
+static void emit_link(request_rec *r, const char *anchor, char column,
+                      char curkey, char curdirection,
+                      const char *colargs, int nosort)
+{
+    if (!nosort) {
+        char qvalue[9];
+
+        qvalue[0] = '?';
+        qvalue[1] = 'C';
+        qvalue[2] = '=';
+        qvalue[3] = column;
+        qvalue[4] = ';';
+        qvalue[5] = 'O';
+        qvalue[6] = '=';
+                    /* reverse? */
+        qvalue[7] = ((curkey == column) && (curdirection == D_ASCENDING))
+                      ? D_DESCENDING : D_ASCENDING;
+        qvalue[8] = '\0';
+        ap_rvputs(r, "<a href=\"", qvalue, colargs ? colargs : "",
+                     "\">", anchor, "</a>", NULL);
+    }
+    else {
+        ap_rputs(anchor, r);
+    }
+}
+
+static void output_directories(struct ent **ar, int n,
+                               autoindex_config_rec *d, request_rec *r,
+                               apr_int32_t autoindex_opts, char keyid,
+                               char direction, const char *colargs)
+{
+    int x;
+    apr_size_t rv;
+    char *tp;
+    int static_columns = !!(autoindex_opts & SUPPRESS_COLSORT);
+    apr_pool_t *scratch;
+    int name_width;
+    int desc_width;
+    char *datetime_format;
+    char *name_scratch;
+    char *pad_scratch;
+    char *breakrow = "";
+
+    apr_pool_create(&scratch, r->pool);
+    apr_pool_tag(scratch, "autoindex_scratch");
+
+    name_width = d->name_width;
+    desc_width = d->desc_width;
+    datetime_format = d->datetime_format ? d->datetime_format : "%Y-%m-%d %H:%M";
+
+    if ((autoindex_opts & (FANCY_INDEXING | TABLE_INDEXING))
+                        == FANCY_INDEXING) {
+        if (d->name_adjust == K_ADJUST) {
+            for (x = 0; x < n; x++) {
+                int t = strlen(ar[x]->name);
+                if (t > name_width) {
+                    name_width = t;
+                }
+            }
+        }
+
+        if (d->desc_adjust == K_ADJUST) {
+            for (x = 0; x < n; x++) {
+                if (ar[x]->desc != NULL) {
+                    int t = strlen(ar[x]->desc);
+                    if (t > desc_width) {
+                        desc_width = t;
+                    }
+                }
+            }
+        }
+    }
+    name_scratch = apr_palloc(r->pool, name_width + 1);
+    pad_scratch = apr_palloc(r->pool, name_width + 1);
+    memset(pad_scratch, ' ', name_width);
+    pad_scratch[name_width] = '\0';
+
+    if (autoindex_opts & TABLE_INDEXING) {
+        int cols = 1;
+        if (d->style_sheet != NULL) {
+            /* Emit table with style id */
+            ap_rputs("  <table id=\"indexlist\">\n   <tr class=\"indexhead\">", r);
+        } else {
+            ap_rputs("  <table>\n   <tr>", r);
+        }
+        if (!(autoindex_opts & SUPPRESS_ICON)) {
+            ap_rvputs(r, "<th", (d->style_sheet != NULL) ? " class=\"indexcolicon\">" : " valign=\"top\">", NULL);
+            if ((tp = find_default_icon(d, "^^BLANKICON^^"))) {
+                ap_rvputs(r, "<img src=\"", ap_escape_html(scratch, tp),
+                             "\" alt=\"[ICO]\"", NULL);
+                if (d->icon_width) {
+                    ap_rprintf(r, " width=\"%d\"", d->icon_width);
+                }
+                if (d->icon_height) {
+                    ap_rprintf(r, " height=\"%d\"", d->icon_height);
+                }
+
+                if (autoindex_opts & EMIT_XHTML) {
+                    ap_rputs(" /", r);
+                }
+                ap_rputs("></th>", r);
+            }
+            else {
+                ap_rputs("&nbsp;</th>", r);
+            }
+
+            ++cols;
+        }
+        ap_rvputs(r, "<th", (d->style_sheet != NULL) ? " class=\"indexcolname\">" : ">", NULL);
+        emit_link(r, "Name", K_NAME, keyid, direction,
+                  colargs, static_columns);
+        if (!(autoindex_opts & SUPPRESS_LAST_MOD)) {
+            ap_rvputs(r, "</th><th", (d->style_sheet != NULL) ? " class=\"indexcollastmod\">" : ">", NULL);
+            emit_link(r, "Last modified", K_LAST_MOD, keyid, direction,
+                      colargs, static_columns);
+            ++cols;
+        }
+        if (!(autoindex_opts & SUPPRESS_SIZE)) {
+            ap_rvputs(r, "</th><th", (d->style_sheet != NULL) ? " class=\"indexcolsize\">" : ">", NULL);
+            emit_link(r, "Size", K_SIZE, keyid, direction,
+                      colargs, static_columns);
+            ++cols;
+        }
+        if (!(autoindex_opts & SUPPRESS_DESC)) {
+            ap_rvputs(r, "</th><th", (d->style_sheet != NULL) ? " class=\"indexcoldesc\">" : ">", NULL);
+            emit_link(r, "Description", K_DESC, keyid, direction,
+                      colargs, static_columns);
+            ++cols;
+        }
+        if (!(autoindex_opts & SUPPRESS_RULES)) {
+            breakrow = apr_psprintf(r->pool,
+                                    "   <tr%s><th colspan=\"%d\">"
+                                    "<hr%s></th></tr>\n",
+                                    (d->style_sheet != NULL) ? " class=\"indexbreakrow\"" : "",
+                                    cols,
+                                    (autoindex_opts & EMIT_XHTML) ? " /" : "");
+        }
+        ap_rvputs(r, "</th></tr>\n", breakrow, NULL);
+    }
+    else if (autoindex_opts & FANCY_INDEXING) {
+        ap_rputs("<pre>", r);
+        if (!(autoindex_opts & SUPPRESS_ICON)) {
+            if ((tp = find_default_icon(d, "^^BLANKICON^^"))) {
+                ap_rvputs(r, "<img src=\"", ap_escape_html(scratch, tp),
+                             "\" alt=\"Icon \"", NULL);
+                if (d->icon_width) {
+                    ap_rprintf(r, " width=\"%d\"", d->icon_width);
+                }
+                if (d->icon_height) {
+                    ap_rprintf(r, " height=\"%d\"", d->icon_height);
+                }
+
+                if (autoindex_opts & EMIT_XHTML) {
+                    ap_rputs(" /", r);
+                }
+                ap_rputs("> ", r);
+            }
+            else {
+                ap_rputs("      ", r);
+            }
+        }
+        emit_link(r, "Name", K_NAME, keyid, direction,
+                  colargs, static_columns);
+        ap_rputs(pad_scratch + 4, r);
+        /*
+         * Emit the guaranteed-at-least-one-space-between-columns byte.
+         */
+        ap_rputs(" ", r);
+        if (!(autoindex_opts & SUPPRESS_LAST_MOD)) {
+            emit_link(r, "Last modified", K_LAST_MOD, keyid, direction,
+                      colargs, static_columns);
+            ap_rputs("      ", r);
+        }
+        if (!(autoindex_opts & SUPPRESS_SIZE)) {
+            emit_link(r, "Size", K_SIZE, keyid, direction,
+                      colargs, static_columns);
+            ap_rputs("  ", r);
+        }
+        if (!(autoindex_opts & SUPPRESS_DESC)) {
+            emit_link(r, "Description", K_DESC, keyid, direction,
+                      colargs, static_columns);
+        }
+        if (!(autoindex_opts & SUPPRESS_RULES)) {
+            ap_rputs("<hr", r);
+            if (autoindex_opts & EMIT_XHTML) {
+                ap_rputs(" /", r);
+            }
+            ap_rputs(">", r);
+        }
+        else {
+            ap_rputc('\n', r);
+        }
+    }
+    else {
+        ap_rputs("<ul>", r);
+    }
+
+    for (x = 0; x < n; x++) {
+        char *anchor, *t, *t2;
+        int nwidth;
+
+        apr_pool_clear(scratch);
+
+        t = ar[x]->name;
+        anchor = ap_escape_html(scratch, ap_os_escape_path(scratch, t, 0));
+
+        if (!x && t[0] == '/') {
+            t2 = "Parent Directory";
+        }
+        else {
+            t2 = t;
+        }
+
+        if (autoindex_opts & TABLE_INDEXING) {
+            /* Even/Odd rows for IndexStyleSheet */
+            if (d->style_sheet != NULL) {
+                if (ar[x]->alt && (autoindex_opts & ADDALTCLASS)) {
+                    /* Include alt text in class name, distinguish between odd and even rows */
+                    char *altclass = apr_pstrdup(scratch, ar[x]->alt);
+                    ap_str_tolower(altclass);
+                    ap_rvputs(r, "   <tr class=\"", ( x & 0x1) ? "odd-" : "even-", altclass, "\">", NULL);
+                } else {
+                    /* Distinguish between odd and even rows */
+                    ap_rvputs(r, "   <tr class=\"", ( x & 0x1) ? "odd" : "even", "\">", NULL);
+                }
+            } else {
+                ap_rputs("<tr>", r);
+            }
+
+            if (!(autoindex_opts & SUPPRESS_ICON)) {
+                ap_rvputs(r, "<td", (d->style_sheet != NULL) ? " class=\"indexcolicon\">" : " valign=\"top\">", NULL);
+                if (autoindex_opts & ICONS_ARE_LINKS) {
+                    ap_rvputs(r, "<a href=\"", anchor, "\">", NULL);
+                }
+                if ((ar[x]->icon) || d->default_icon) {
+                    ap_rvputs(r, "<img src=\"",
+                              ap_escape_html(scratch,
+                                             ar[x]->icon ? ar[x]->icon
+                                                         : d->default_icon),
+                              "\" alt=\"[", (ar[x]->alt ? ar[x]->alt : "   "),
+                              "]\"", NULL);
+                    if (d->icon_width) {
+                        ap_rprintf(r, " width=\"%d\"", d->icon_width);
+                    }
+                    if (d->icon_height) {
+                        ap_rprintf(r, " height=\"%d\"", d->icon_height);
+                    }
+
+                    if (autoindex_opts & EMIT_XHTML) {
+                        ap_rputs(" /", r);
+                    }
+                    ap_rputs(">", r);
+                }
+                else {
+                    ap_rputs("&nbsp;", r);
+                }
+                if (autoindex_opts & ICONS_ARE_LINKS) {
+                    ap_rputs("</a></td>", r);
+                }
+                else {
+                    ap_rputs("</td>", r);
+                }
+            }
+            if (d->name_adjust == K_ADJUST) {
+                ap_rvputs(r, "<td", (d->style_sheet != NULL) ? " class=\"indexcolname\">" : ">", "<a href=\"", anchor, "\">",
+                          ap_escape_html(scratch, t2), "</a>", NULL);
+            }
+            else {
+                nwidth = strlen(t2);
+                if (nwidth > name_width) {
+                  memcpy(name_scratch, t2, name_width - 3);
+                  name_scratch[name_width - 3] = '.';
+                  name_scratch[name_width - 2] = '.';
+                  name_scratch[name_width - 1] = '>';
+                  name_scratch[name_width] = 0;
+                  t2 = name_scratch;
+                  nwidth = name_width;
+                }
+                ap_rvputs(r, "<td", (d->style_sheet != NULL) ? " class=\"indexcolname\">" : ">", "<a href=\"", anchor, "\">",
+                          ap_escape_html(scratch, t2),
+                          "</a>", pad_scratch + nwidth, NULL);
+            }
+            if (!(autoindex_opts & SUPPRESS_LAST_MOD)) {
+                if (ar[x]->lm != -1) {
+                    char time_str[32];
+                    apr_time_exp_t ts;
+                    apr_time_exp_lt(&ts, ar[x]->lm);
+                    apr_strftime(time_str, &rv, sizeof(time_str),
+                                 datetime_format,
+                                 &ts);
+                    ap_rvputs(r, "</td><td", (d->style_sheet != NULL) ? " class=\"indexcollastmod\">" : " align=\"right\">", time_str, "  ", NULL);
+                }
+                else {
+                    ap_rvputs(r, "</td><td", (d->style_sheet != NULL) ? " class=\"indexcollastmod\">&nbsp;" : ">&nbsp;", NULL);
+                }
+            }
+            if (!(autoindex_opts & SUPPRESS_SIZE)) {
+                char buf[5];
+                ap_rvputs(r, "</td><td", (d->style_sheet != NULL) ? " class=\"indexcolsize\">" : " align=\"right\">",
+                          apr_strfsize(ar[x]->size, buf), NULL);
+            }
+            if (!(autoindex_opts & SUPPRESS_DESC)) {
+                if (ar[x]->desc) {
+                    if (d->desc_adjust == K_ADJUST) {
+                        ap_rvputs(r, "</td><td", (d->style_sheet != NULL) ? " class=\"indexcoldesc\">" : ">", ar[x]->desc, NULL);
+                    }
+                    else {
+                        ap_rvputs(r, "</td><td", (d->style_sheet != NULL) ? " class=\"indexcoldesc\">" : ">",
+                                  terminate_description(d, ar[x]->desc,
+                                                        autoindex_opts,
+                                                        desc_width), NULL);
+                    }
+                }
+                else {
+                    ap_rvputs(r, "</td><td", (d->style_sheet != NULL) ? " class=\"indexcoldesc\">" : ">", "&nbsp;", NULL);
+                }
+            }
+            ap_rputs("</td></tr>\n", r);
+        }
+        else if (autoindex_opts & FANCY_INDEXING) {
+            if (!(autoindex_opts & SUPPRESS_ICON)) {
+                if (autoindex_opts & ICONS_ARE_LINKS) {
+                    ap_rvputs(r, "<a href=\"", anchor, "\">", NULL);
+                }
+                if ((ar[x]->icon) || d->default_icon) {
+                    ap_rvputs(r, "<img src=\"",
+                              ap_escape_html(scratch,
+                                             ar[x]->icon ? ar[x]->icon
+                                                         : d->default_icon),
+                              "\" alt=\"[", (ar[x]->alt ? ar[x]->alt : "   "),
+                              "]\"", NULL);
+                    if (d->icon_width) {
+                        ap_rprintf(r, " width=\"%d\"", d->icon_width);
+                    }
+                    if (d->icon_height) {
+                        ap_rprintf(r, " height=\"%d\"", d->icon_height);
+                    }
+
+                    if (autoindex_opts & EMIT_XHTML) {
+                        ap_rputs(" /", r);
+                    }
+                    ap_rputs(">", r);
+                }
+                else {
+                    ap_rputs("     ", r);
+                }
+                if (autoindex_opts & ICONS_ARE_LINKS) {
+                    ap_rputs("</a> ", r);
+                }
+                else {
+                    ap_rputc(' ', r);
+                }
+            }
+            nwidth = strlen(t2);
+            if (nwidth > name_width) {
+                memcpy(name_scratch, t2, name_width - 3);
+                name_scratch[name_width - 3] = '.';
+                name_scratch[name_width - 2] = '.';
+                name_scratch[name_width - 1] = '>';
+                name_scratch[name_width] = 0;
+                t2 = name_scratch;
+                nwidth = name_width;
+            }
+            ap_rvputs(r, "<a href=\"", anchor, "\">",
+                      ap_escape_html(scratch, t2),
+                      "</a>", pad_scratch + nwidth, NULL);
+            /*
+             * The blank before the storm.. er, before the next field.
+             */
+            ap_rputs(" ", r);
+            if (!(autoindex_opts & SUPPRESS_LAST_MOD)) {
+                if (ar[x]->lm != -1) {
+                    char time_str[32];
+                    apr_time_exp_t ts;
+                    apr_time_exp_lt(&ts, ar[x]->lm);
+                    apr_strftime(time_str, &rv, sizeof(time_str),
+                                datetime_format,
+                                &ts);
+                    ap_rvputs(r, time_str, "  ", NULL);
+                }
+                else {
+                   /* Length="1975-04-07 01:23  "  (default in 2.4 and later) or
+                    * Length="07-Apr-1975 01:24  ". (2.2 and UseOldDateFormat) 
+                    * See 'datetime_format' above.
+                    */
+                    ap_rputs("                   ", r);
+                }
+            }
+            if (!(autoindex_opts & SUPPRESS_SIZE)) {
+                char buf[5];
+                ap_rputs(apr_strfsize(ar[x]->size, buf), r);
+                ap_rputs("  ", r);
+            }
+            if (!(autoindex_opts & SUPPRESS_DESC)) {
+                if (ar[x]->desc) {
+                    ap_rputs(terminate_description(d, ar[x]->desc,
+                                                   autoindex_opts,
+                                                   desc_width), r);
+                }
+            }
+            ap_rputc('\n', r);
+        }
+        else {
+            ap_rvputs(r, "<li><a href=\"", anchor, "\"> ",
+                      ap_escape_html(scratch, t2),
+                      "</a></li>\n", NULL);
+        }
+    }
+    if (autoindex_opts & TABLE_INDEXING) {
+        ap_rvputs(r, breakrow, "</table>\n", NULL);
+    }
+    else if (autoindex_opts & FANCY_INDEXING) {
+        if (!(autoindex_opts & SUPPRESS_RULES)) {
+            ap_rputs("<hr", r);
+            if (autoindex_opts & EMIT_XHTML) {
+                ap_rputs(" /", r);
+            }
+            ap_rputs("></pre>\n", r);
+        }
+        else {
+            ap_rputs("</pre>\n", r);
+        }
+    }
+    else {
+        ap_rputs("</ul>\n", r);
+    }
+}
+
+/*
+ * Compare two file entries according to the sort criteria.  The return
+ * is essentially a signum function value.
+ */
+
+static int dsortf(struct ent **e1, struct ent **e2)
+{
+    struct ent *c1;
+    struct ent *c2;
+    int result = 0;
+
+    /*
+     * First, see if either of the entries is for the parent directory.
+     * If so, that *always* sorts lower than anything else.
+     */
+    if ((*e1)->name[0] == '/') {
+        return -1;
+    }
+    if ((*e2)->name[0] == '/') {
+        return 1;
+    }
+    /*
+     * Now see if one's a directory and one isn't, if we're set
+     * isdir for FOLDERS_FIRST.
+     */
+    if ((*e1)->isdir != (*e2)->isdir) {
+        return (*e1)->isdir ? -1 : 1;
+    }
+    /*
+     * All of our comparisons will be of the c1 entry against the c2 one,
+     * so assign them appropriately to take care of the ordering.
+     */
+    if ((*e1)->ascending) {
+        c1 = *e1;
+        c2 = *e2;
+    }
+    else {
+        c1 = *e2;
+        c2 = *e1;
+    }
+
+    switch (c1->key) {
+    case K_LAST_MOD:
+        if (c1->lm > c2->lm) {
+            return 1;
+        }
+        else if (c1->lm < c2->lm) {
+            return -1;
+        }
+        break;
+    case K_SIZE:
+        if (c1->size > c2->size) {
+            return 1;
+        }
+        else if (c1->size < c2->size) {
+            return -1;
+        }
+        break;
+    case K_DESC:
+        if (c1->version_sort) {
+            result = apr_strnatcmp(c1->desc ? c1->desc : "",
+                                   c2->desc ? c2->desc : "");
+        }
+        else {
+            result = strcmp(c1->desc ? c1->desc : "",
+                            c2->desc ? c2->desc : "");
+        }
+        if (result) {
+            return result;
+        }
+        break;
+    }
+
+    /* names may identical when treated case-insensitively,
+     * so always fall back on strcmp() flavors to put entries
+     * in deterministic order.  This means that 'ABC' and 'abc'
+     * will always appear in the same order, rather than
+     * variably between 'ABC abc' and 'abc ABC' order.
+     */
+
+    if (c1->version_sort) {
+        if (c1->ignore_case) {
+            result = apr_strnatcasecmp (c1->name, c2->name);
+        }
+        if (!result) {
+            result = apr_strnatcmp(c1->name, c2->name);
+        }
+    }
+
+    /* The names may be identical in respects other than
+     * filename case when strnatcmp is used above, so fall back
+     * to strcmp on conflicts so that fn1.01.zzz and fn1.1.zzz
+     * are also sorted in a deterministic order.
+     */
+
+    if (!result && c1->ignore_case) {
+        result = strcasecmp (c1->name, c2->name);
+    }
+
+    if (!result) {
+        result = strcmp (c1->name, c2->name);
+    }
+
+    return result;
+}
+
+
+static int index_directory(request_rec *r,
+                           autoindex_config_rec *autoindex_conf)
+{
+    char *title_name = ap_escape_html(r->pool, r->uri);
+    char *title_endp;
+    char *name = r->filename;
+    char *pstring = NULL;
+    apr_finfo_t dirent;
+    apr_dir_t *thedir;
+    apr_status_t status;
+    int num_ent = 0, x;
+    struct ent *head, *p;
+    struct ent **ar = NULL;
+    const char *qstring;
+    apr_int32_t autoindex_opts = autoindex_conf->opts;
+    char keyid;
+    char direction;
+    char *colargs;
+    char *fullpath;
+    apr_size_t dirpathlen;
+    char *ctype = "text/html";
+    char *charset;
+
+    if ((status = apr_dir_open(&thedir, name, r->pool)) != APR_SUCCESS) {
+        ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, APLOGNO(01275)
+                      "Can't open directory for index: %s", r->filename);
+        return HTTP_FORBIDDEN;
+    }
+
+    if (autoindex_conf->ctype) {
+        ctype = autoindex_conf->ctype;
+    }
+    if (autoindex_conf->charset) {
+        charset = autoindex_conf->charset;
+    }
+    else {
+#if APR_HAS_UNICODE_FS
+        charset = "UTF-8";
+#else
+        charset = "ISO-8859-1";
+#endif
+    }
+    if (*charset) {
+        ap_set_content_type(r, apr_pstrcat(r->pool, ctype, ";charset=",
+                            charset, NULL));
+    }
+    else {
+        ap_set_content_type(r, ctype);
+    }
+
+    if (autoindex_opts & TRACK_MODIFIED) {
+        ap_update_mtime(r, r->finfo.mtime);
+        ap_set_last_modified(r);
+        ap_set_etag(r);
+    }
+    if (r->header_only) {
+        apr_dir_close(thedir);
+        return 0;
+    }
+
+    /*
+     * If there is no specific ordering defined for this directory,
+     * default to ascending by filename.
+     */
+    keyid = autoindex_conf->default_keyid
+                ? autoindex_conf->default_keyid : K_NAME;
+    direction = autoindex_conf->default_direction
+                ? autoindex_conf->default_direction : D_ASCENDING;
+
+    /*
+     * Figure out what sort of indexing (if any) we're supposed to use.
+     *
+     * If no QUERY_STRING was specified or client query strings have been
+     * explicitly disabled.
+     * If we are ignoring the client, suppress column sorting as well.
+     */
+    if (autoindex_opts & IGNORE_CLIENT) {
+        qstring = NULL;
+        autoindex_opts |= SUPPRESS_COLSORT;
+        colargs = "";
+    }
+    else {
+        char fval[5], vval[5], *ppre = "", *epattern = "";
+        fval[0] = '\0'; vval[0] = '\0';
+        qstring = r->args;
+
+        while (qstring && *qstring) {
+
+            /* C= First Sort key Column (N, M, S, D) */
+            if (   qstring[0] == 'C' && qstring[1] == '='
+                && qstring[2] && strchr(K_VALID, qstring[2])
+                && (   qstring[3] == '&' || qstring[3] == ';'
+                    || !qstring[3])) {
+                keyid = qstring[2];
+                qstring += qstring[3] ? 4 : 3;
+            }
+
+            /* O= Sort order (A, D) */
+            else if (   qstring[0] == 'O' && qstring[1] == '='
+                     && (   (qstring[2] == D_ASCENDING)
+                         || (qstring[2] == D_DESCENDING))
+                     && (   qstring[3] == '&' || qstring[3] == ';'
+                         || !qstring[3])) {
+                direction = qstring[2];
+                qstring += qstring[3] ? 4 : 3;
+            }
+
+            /* F= Output Format (0 plain, 1 fancy (pre), 2 table) */
+            else if (   qstring[0] == 'F' && qstring[1] == '='
+                     && qstring[2] && strchr("012", qstring[2])
+                     && (   qstring[3] == '&' || qstring[3] == ';'
+                         || !qstring[3])) {
+                if (qstring[2] == '0') {
+                    autoindex_opts &= ~(FANCY_INDEXING | TABLE_INDEXING);
+                }
+                else if (qstring[2] == '1') {
+                    autoindex_opts = (autoindex_opts | FANCY_INDEXING)
+                        & ~TABLE_INDEXING;
+                }
+                else if (qstring[2] == '2') {
+                    autoindex_opts |= FANCY_INDEXING | TABLE_INDEXING;
+                }
+                strcpy(fval, ";F= ");
+                fval[3] = qstring[2];
+                qstring += qstring[3] ? 4 : 3;
+            }
+
+            /* V= Version sort (0, 1) */
+            else if (   qstring[0] == 'V' && qstring[1] == '='
+                     && (qstring[2] == '0' || qstring[2] == '1')
+                     && (   qstring[3] == '&' || qstring[3] == ';'
+                         || !qstring[3])) {
+                if (qstring[2] == '0') {
+                    autoindex_opts &= ~VERSION_SORT;
+                }
+                else if (qstring[2] == '1') {
+                    autoindex_opts |= VERSION_SORT;
+                }
+                strcpy(vval, ";V= ");
+                vval[3] = qstring[2];
+                qstring += qstring[3] ? 4 : 3;
+            }
+
+            /* P= wildcard pattern (*.foo) */
+            else if (qstring[0] == 'P' && qstring[1] == '=') {
+                const char *eos = qstring += 2; /* for efficiency */
+
+                while (*eos && *eos != '&' && *eos != ';') {
+                    ++eos;
+                }
+
+                if (eos == qstring) {
+                    pstring = NULL;
+                }
+                else {
+                    pstring = apr_pstrndup(r->pool, qstring, eos - qstring);
+                    if (ap_unescape_url(pstring) != OK) {
+                        /* ignore the pattern, if it's bad. */
+                        pstring = NULL;
+                    }
+                    else {
+                        ppre = ";P=";
+                        /* be correct */
+                        epattern = ap_escape_uri(r->pool, pstring);
+                    }
+                }
+
+                if (*eos && *++eos) {
+                    qstring = eos;
+                }
+                else {
+                    qstring = NULL;
+                }
+            }
+
+            /* Syntax error?  Ignore the remainder! */
+            else {
+                qstring = NULL;
+            }
+        }
+        colargs = apr_pstrcat(r->pool, fval, vval, ppre, epattern, NULL);
+    }
+
+    /* Spew HTML preamble */
+    title_endp = title_name + strlen(title_name) - 1;
+
+    while (title_endp > title_name && *title_endp == '/') {
+        *title_endp-- = '\0';
+    }
+
+    emit_head(r, autoindex_conf->header,
+              autoindex_opts & SUPPRESS_PREAMBLE,
+              autoindex_opts & EMIT_XHTML, title_name);
+
+    /*
+     * Since we don't know how many dir. entries there are, put them into a
+     * linked list and then arrayificate them so qsort can use them.
+     */
+    head = NULL;
+    p = make_parent_entry(autoindex_opts, autoindex_conf, r, keyid, direction);
+    if (p != NULL) {
+        p->next = head;
+        head = p;
+        num_ent++;
+    }
+    fullpath = apr_palloc(r->pool, APR_PATH_MAX);
+    dirpathlen = strlen(name);
+    memcpy(fullpath, name, dirpathlen);
+
+    do {
+        status = apr_dir_read(&dirent, APR_FINFO_MIN | APR_FINFO_NAME, thedir);
+        if (APR_STATUS_IS_INCOMPLETE(status)) {
+            continue; /* ignore un-stat()able files */
+        }
+        else if (status != APR_SUCCESS) {
+            break;
+        }
+
+        /* We want to explode symlinks here. */
+        if (dirent.filetype == APR_LNK) {
+            const char *savename;
+            apr_finfo_t fi;
+            /* We *must* have FNAME. */
+            savename = dirent.name;
+            apr_cpystrn(fullpath + dirpathlen, dirent.name,
+                        APR_PATH_MAX - dirpathlen);
+            status = apr_stat(&fi, fullpath,
+                              dirent.valid & ~(APR_FINFO_NAME), r->pool);
+            if (status != APR_SUCCESS) {
+                /* Something bad happened, skip this file. */
+                continue;
+            }
+            memcpy(&dirent, &fi, sizeof(fi));
+            dirent.name = savename;
+            dirent.valid |= APR_FINFO_NAME;
+        }
+        p = make_autoindex_entry(&dirent, autoindex_opts, autoindex_conf, r,
+                                 keyid, direction, pstring);
+        if (p != NULL) {
+            p->next = head;
+            head = p;
+            num_ent++;
+        }
+    } while (1);
+
+    if (num_ent > 0) {
+        ar = (struct ent **) apr_palloc(r->pool,
+                                        num_ent * sizeof(struct ent *));
+        p = head;
+        x = 0;
+        while (p) {
+            ar[x++] = p;
+            p = p->next;
+        }
+
+        qsort((void *) ar, num_ent, sizeof(struct ent *),
+              (int (*)(const void *, const void *)) dsortf);
+    }
+    output_directories(ar, num_ent, autoindex_conf, r, autoindex_opts,
+                       keyid, direction, colargs);
+    apr_dir_close(thedir);
+
+    emit_tail(r, autoindex_conf->readme,
+              autoindex_opts & SUPPRESS_PREAMBLE);
+
+    return 0;
+}
+
+/* The formal handler... */
+
+static int handle_autoindex(request_rec *r)
+{
+    autoindex_config_rec *d;
+    int allow_opts;
+
+    if (strcmp(r->handler,DIR_MAGIC_TYPE) && !AP_IS_DEFAULT_HANDLER_NAME(r->handler)) {
+        return DECLINED;
+    }
+    if (r->finfo.filetype != APR_DIR) {
+        return DECLINED;
+    }
+
+    allow_opts = ap_allow_options(r);
+
+    d = (autoindex_config_rec *) ap_get_module_config(r->per_dir_config,
+                                                      &autoindex_module);
+
+    r->allowed |= (AP_METHOD_BIT << M_GET);
+    if (r->method_number != M_GET) {
+        return DECLINED;
+    }
+
+    /* OK, nothing easy.  Trot out the heavy artillery... */
+
+    if (allow_opts & OPT_INDEXES) {
+        int errstatus;
+
+        if ((errstatus = ap_discard_request_body(r)) != OK) {
+            return errstatus;
+        }
+
+        /* 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 = apr_pstrcat(r->pool, r->filename, "/", NULL);
+        }
+        return index_directory(r, d);
+    }
+    else {
+        const char *index_names = apr_table_get(r->notes, "dir-index-names");
+
+        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01276)
+                      "Cannot serve directory %s: No matching DirectoryIndex (%s) found, and "
+                      "server-generated directory index forbidden by "
+                      "Options directive",
+                       r->filename,
+                       index_names ? index_names : "none");
+        return HTTP_FORBIDDEN;
+    }
+}
+
+static void register_hooks(apr_pool_t *p)
+{
+    ap_hook_handler(handle_autoindex,NULL,NULL,APR_HOOK_MIDDLE);
+}
+
+AP_DECLARE_MODULE(autoindex) =
+{
+    STANDARD20_MODULE_STUFF,
+    create_autoindex_config,    /* dir config creater */
+    merge_autoindex_configs,    /* dir merger --- default is to override */
+    NULL,                       /* server config */
+    NULL,                       /* merge server config */
+    autoindex_cmds,             /* command apr_table_t */
+    register_hooks              /* register hooks */
+};
-- 
cgit v1.2.3