dir-index-bozo.c revision 1.17 
1/*	$NetBSD: dir-index-bozo.c,v 1.17 2013/07/11 07:46:37 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) 1997-2013 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
48static void
49directory_hr(bozohttpd_t *httpd)
50{
51
52	bozo_printf(httpd,
53		"<hr noshade align=\"left\" width=\"80%%\">\r\n\r\n");
54}
55
56/*
57 * output a directory index.  return 1 if it actually did something..
58 */
59int
60bozo_dir_index(bozo_httpreq_t *request, const char *dirname, int isindex)
61{
62	bozohttpd_t *httpd = request->hr_httpd;
63	struct stat sb;
64	struct dirent **de, **deo;
65	struct tm *tm;
66	DIR *dp;
67	char buf[MAXPATHLEN];
68	char spacebuf[48];
69	char *file = NULL;
70	int l, k, j, i;
71
72	if (!isindex || !httpd->dir_indexing)
73		return 0;
74
75	if (strlen(dirname) <= strlen(httpd->index_html))
76		dirname = ".";
77	else {
78		file = bozostrdup(httpd, dirname);
79
80		file[strlen(file) - strlen(httpd->index_html)] = '\0';
81		dirname = file;
82	}
83	debug((httpd, DEBUG_FAT, "bozo_dir_index: dirname ``%s''", dirname));
84	if (stat(dirname, &sb) < 0 ||
85	    (dp = opendir(dirname)) == NULL) {
86		if (errno == EPERM)
87			(void)bozo_http_error(httpd, 403, request,
88			    "no permission to open directory");
89		else if (errno == ENOENT)
90			(void)bozo_http_error(httpd, 404, request, "no file");
91		else
92			(void)bozo_http_error(httpd, 500, request,
93					"open directory");
94		goto done;
95		/* NOTREACHED */
96	}
97
98	bozo_printf(httpd, "%s 200 OK\r\n", request->hr_proto);
99
100	if (request->hr_proto != httpd->consts.http_09) {
101		bozo_print_header(request, NULL, "text/html", "");
102		bozo_printf(httpd, "\r\n");
103	}
104	bozo_flush(httpd, stdout);
105
106	if (request->hr_method == HTTP_HEAD) {
107		closedir(dp);
108		goto done;
109	}
110
111	bozo_printf(httpd,
112		"<html><head><title>Index of %s</title></head>\r\n",
113		request->hr_file);
114	bozo_printf(httpd, "<body><h1>Index of %s</h1>\r\n",
115		request->hr_file);
116	bozo_printf(httpd, "<pre>\r\n");
117#define NAMELEN 40
118#define LMODLEN 19
119	bozo_printf(httpd, "Name                                     "
120	    "Last modified          "
121	    "Size\n");
122	bozo_printf(httpd, "</pre>");
123	directory_hr(httpd);
124	bozo_printf(httpd, "<pre>");
125
126	for (j = k = scandir(dirname, &de, NULL, alphasort), deo = de;
127	    j--; de++) {
128		int nostat = 0;
129		char *name = (*de)->d_name;
130		char *urlname, *htmlname;
131
132		if (strcmp(name, ".") == 0 ||
133		    (strcmp(name, "..") != 0 &&
134		     httpd->hide_dots && name[0] == '.'))
135			continue;
136
137		snprintf(buf, sizeof buf, "%s/%s", dirname, name);
138		if (stat(buf, &sb))
139			nostat = 1;
140
141		l = 0;
142
143		urlname = bozo_escape_rfc3986(httpd, name);
144		htmlname = bozo_escape_html(httpd, name);
145		if (htmlname == NULL)
146			htmlname = name;
147		if (strcmp(name, "..") == 0) {
148			bozo_printf(httpd, "<a href=\"../\">");
149			l += bozo_printf(httpd, "Parent Directory");
150		} else if (S_ISDIR(sb.st_mode)) {
151			bozo_printf(httpd, "<a href=\"%s/\">", urlname);
152			l += bozo_printf(httpd, "%s/", htmlname);
153		} else if (strchr(name, ':') != NULL) {
154			/* RFC 3986 4.2 */
155			bozo_printf(httpd, "<a href=\"./%s\">", urlname);
156			l += bozo_printf(httpd, "%s", htmlname);
157		} else {
158			bozo_printf(httpd, "<a href=\"%s\">", urlname);
159			l += bozo_printf(httpd, "%s", htmlname);
160		}
161		if (htmlname != name)
162			free(htmlname);
163		bozo_printf(httpd, "</a>");
164
165		/* NAMELEN spaces */
166		/*LINTED*/
167		assert(/*CONSTCOND*/sizeof(spacebuf) > NAMELEN);
168		i = (l < NAMELEN) ? (NAMELEN - l) : 0;
169		i++;
170		memset(spacebuf, ' ', (size_t)i);
171		spacebuf[i] = '\0';
172		bozo_printf(httpd, "%s", spacebuf);
173		l += i;
174
175		if (nostat)
176			bozo_printf(httpd, "?                         ?");
177		else {
178			tm = gmtime(&sb.st_mtime);
179			strftime(buf, sizeof buf, "%d-%b-%Y %R", tm);
180			l += bozo_printf(httpd, "%s", buf);
181
182			/* LMODLEN spaces */
183			/*LINTED*/
184			assert(/*CONSTCOND*/sizeof(spacebuf) > LMODLEN);
185			i = (l < (LMODLEN+NAMELEN+1)) ?
186				((LMODLEN+NAMELEN+1) - l) : 0;
187			i++;
188			memset(spacebuf, ' ', (size_t)i);
189			spacebuf[i] = '\0';
190			bozo_printf(httpd, "%s", spacebuf);
191
192			bozo_printf(httpd, "%7ukB",
193			    ((unsigned)((unsigned)(sb.st_size) >> 10)));
194		}
195		bozo_printf(httpd, "\r\n");
196	}
197
198	closedir(dp);
199	while (k--)
200        	free(deo[k]);
201	free(deo);
202	bozo_printf(httpd, "</pre>");
203	directory_hr(httpd);
204	bozo_printf(httpd, "</body></html>\r\n\r\n");
205	bozo_flush(httpd, stdout);
206
207done:
208	if (file)
209		free(file);
210	return 1;
211}
212#endif /* NO_DIRINDEX_SUPPORT */
213
214