dir-index-bozo.c revision 1.30 
1/*	$NetBSD: dir-index-bozo.c,v 1.30 2019/01/17 07:46:16 mrg Exp $	*/
2
3/*	$eterna: dir-index-bozo.c,v 1.20 2011/11/18 09:21:15 mrg Exp $	*/
4
5/*
6 * Copyright (c) 1997-2018 Matthew R. Green
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer and
16 *    dedication in the documentation and/or other materials provided
17 *    with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 */
32
33/* this code implements directory index generation for bozohttpd */
34
35#ifndef NO_DIRINDEX_SUPPORT
36
37#include <sys/param.h>
38
39#include <dirent.h>
40#include <errno.h>
41#include <string.h>
42#include <stdlib.h>
43#include <time.h>
44#include <assert.h>
45
46#include "bozohttpd.h"
47
48/*
49 * output a directory index.  return 1 if it actually did something..
50 */
51int
52bozo_dir_index(bozo_httpreq_t *request, const char *dirpath, int isindex)
53{
54	bozohttpd_t *httpd = request->hr_httpd;
55	struct stat sb;
56	struct dirent **de, **deo;
57	DIR *dp;
58	char buf[MAXPATHLEN];
59	char *file = NULL, *printname = NULL, *p;
60	int k, j;
61
62	if (!isindex || !httpd->dir_indexing)
63		return 0;
64
65	if (strlen(dirpath) <= strlen(httpd->index_html))
66		dirpath = ".";
67	else {
68		file = bozostrdup(httpd, request, dirpath);
69
70		file[strlen(file) - strlen(httpd->index_html)] = '\0';
71		dirpath = file;
72	}
73	debug((httpd, DEBUG_FAT, "bozo_dir_index: dirpath '%s'", dirpath));
74	if (stat(dirpath, &sb) < 0 ||
75	    (dp = opendir(dirpath)) == NULL) {
76		if (errno == EPERM)
77			bozo_http_error(httpd, 403, request,
78					"no permission to open directory");
79		else if (errno == ENOENT)
80			bozo_http_error(httpd, 404, request, "no file");
81		else
82			bozo_http_error(httpd, 500, request, "open directory");
83		goto done;
84		/* NOTREACHED */
85	}
86
87	bozo_printf(httpd, "%s 200 OK\r\n", request->hr_proto);
88
89	if (request->hr_proto != httpd->consts.http_09) {
90		bozo_print_header(request, NULL, "text/html", "");
91		bozo_printf(httpd, "\r\n");
92	}
93	bozo_flush(httpd, stdout);
94
95	if (request->hr_method == HTTP_HEAD) {
96		closedir(dp);
97		goto done;
98	}
99
100#ifndef NO_USER_SUPPORT
101	if (request->hr_user) {
102		bozoasprintf(httpd, &printname, "~%s/%s",
103			     request->hr_user, request->hr_file);
104	} else
105		printname = bozostrdup(httpd, request, request->hr_file);
106#else
107	printname = bozostrdup(httpd, request, request->hr_file);
108#endif /* !NO_USER_SUPPORT */
109	if ((p = strstr(printname, httpd->index_html)) != NULL) {
110		if (strcmp(printname, httpd->index_html) == 0)
111			strcpy(printname, "/");	/* is ``slashdir'' */
112		else
113			*p = '\0';		/* strip unwanted ``index_html'' */
114	}
115	if ((p = bozo_escape_html(httpd, printname)) != NULL) {
116		free(printname);
117		printname = p;
118	}
119
120	bozo_printf(httpd,
121		"<!DOCTYPE html>\r\n"
122		"<html><head><meta charset=\"utf-8\"/>\r\n"
123		"<style type=\"text/css\">\r\n"
124		"table {\r\n"
125		"\tborder-top: 1px solid black;\r\n"
126		"\tborder-bottom: 1px solid black;\r\n"
127		"}\r\n"
128		"th { background: aquamarine; }\r\n"
129		"tr:nth-child(even) { background: lavender; }\r\n"
130		"</style>\r\n");
131	bozo_printf(httpd, "<title>Index of %s</title></head>\r\n",
132		printname);
133	bozo_printf(httpd, "<body><h1>Index of %s</h1>\r\n",
134		printname);
135	bozo_printf(httpd,
136		"<table cols=3>\r\n<thead>\r\n"
137		"<tr><th>Name<th>Last modified<th align=right>Size\r\n"
138		"<tbody>\r\n");
139
140	for (j = k = scandir(dirpath, &de, NULL, alphasort), deo = de;
141	    j--; de++) {
142		int nostat = 0;
143		char *name = (*de)->d_name;
144		char *urlname, *htmlname;
145
146		if (strcmp(name, ".") == 0 ||
147		    (strcmp(name, "..") != 0 &&
148		     httpd->hide_dots && name[0] == '.'))
149			continue;
150
151		snprintf(buf, sizeof buf, "%s/%s", dirpath, name);
152		if (stat(buf, &sb))
153			nostat = 1;
154
155		urlname = bozo_escape_rfc3986(httpd, name, 0);
156		htmlname = bozo_escape_html(httpd, name);
157		if (htmlname == NULL)
158			htmlname = name;
159		bozo_printf(httpd, "<tr><td>");
160		if (strcmp(name, "..") == 0) {
161			bozo_printf(httpd, "<a href=\"../\">");
162			bozo_printf(httpd, "Parent Directory");
163		} else if (!nostat && S_ISDIR(sb.st_mode)) {
164			bozo_printf(httpd, "<a href=\"%s/\">", urlname);
165			bozo_printf(httpd, "%s/", htmlname);
166		} else if (strchr(name, ':') != NULL) {
167			/* RFC 3986 4.2 */
168			bozo_printf(httpd, "<a href=\"./%s\">", urlname);
169			bozo_printf(httpd, "%s", htmlname);
170		} else {
171			bozo_printf(httpd, "<a href=\"%s\">", urlname);
172			bozo_printf(httpd, "%s", htmlname);
173		}
174		if (htmlname != name)
175			free(htmlname);
176		bozo_printf(httpd, "</a>");
177
178		if (nostat)
179			bozo_printf(httpd, "<td>?<td>?\r\n");
180		else {
181			unsigned long long len;
182
183			strftime(buf, sizeof buf, "%d-%b-%Y %R", gmtime(&sb.st_mtime));
184			bozo_printf(httpd, "<td>%s", buf);
185
186			len = ((unsigned long long)sb.st_size + 1023) / 1024;
187			bozo_printf(httpd, "<td align=right>%llukB", len);
188		}
189		bozo_printf(httpd, "\r\n");
190	}
191
192	closedir(dp);
193	while (k--)
194        	free(deo[k]);
195	free(deo);
196	bozo_printf(httpd, "</table>\r\n");
197	bozo_printf(httpd, "</body></html>\r\n\r\n");
198	bozo_flush(httpd, stdout);
199
200done:
201	free(file);
202	free(printname);
203	return 1;
204}
205#endif /* NO_DIRINDEX_SUPPORT */
206