dir-index-bozo.c revision 1.24 
1/*	$NetBSD: dir-index-bozo.c,v 1.24 2015/12/28 07:37:59 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) 1997-2014 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 *dirpath, 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, *printname = NULL;
70	int l, k, j, i;
71
72	if (!isindex || !httpd->dir_indexing)
73		return 0;
74
75	if (strlen(dirpath) <= strlen(httpd->index_html))
76		dirpath = ".";
77	else {
78		file = bozostrdup(httpd, request, dirpath);
79
80		file[strlen(file) - strlen(httpd->index_html)] = '\0';
81		dirpath = file;
82	}
83	debug((httpd, DEBUG_FAT, "bozo_dir_index: dirpath ``%s''", dirpath));
84	if (stat(dirpath, &sb) < 0 ||
85	    (dp = opendir(dirpath)) == 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#ifndef NO_USER_SUPPORT
112	if (request->hr_user) {
113		if (asprintf(&printname, "~%s/%s", request->hr_user,
114		  request->hr_file) < 0)
115			bozoerr(httpd, 1, "asprintf");
116	} else
117		printname = bozostrdup(httpd, request, request->hr_file);
118#else
119	printname = bozostrdup(httpd, request, request->hr_file);
120#endif /* !NO_USER_SUPPORT */
121
122	bozo_printf(httpd,
123		"<html><head><title>Index of %s</title></head>\r\n",
124		printname);
125	bozo_printf(httpd, "<body><h1>Index of %s</h1>\r\n",
126		printname);
127	bozo_printf(httpd, "<pre>\r\n");
128#define NAMELEN 40
129#define LMODLEN 19
130	bozo_printf(httpd, "Name                                     "
131	    "Last modified          "
132	    "Size\n");
133	bozo_printf(httpd, "</pre>");
134	directory_hr(httpd);
135	bozo_printf(httpd, "<pre>");
136
137	for (j = k = scandir(dirpath, &de, NULL, alphasort), deo = de;
138	    j--; de++) {
139		int nostat = 0;
140		char *name = (*de)->d_name;
141		char *urlname, *htmlname;
142
143		if (strcmp(name, ".") == 0 ||
144		    (strcmp(name, "..") != 0 &&
145		     httpd->hide_dots && name[0] == '.'))
146			continue;
147
148		snprintf(buf, sizeof buf, "%s/%s", dirpath, name);
149		if (stat(buf, &sb))
150			nostat = 1;
151
152		l = 0;
153
154		urlname = bozo_escape_rfc3986(httpd, name, 0);
155		htmlname = bozo_escape_html(httpd, name);
156		if (htmlname == NULL)
157			htmlname = name;
158		if (strcmp(name, "..") == 0) {
159			bozo_printf(httpd, "<a href=\"../\">");
160			l += bozo_printf(httpd, "Parent Directory");
161		} else if (S_ISDIR(sb.st_mode)) {
162			bozo_printf(httpd, "<a href=\"%s/\">", urlname);
163			l += bozo_printf(httpd, "%s/", htmlname);
164		} else if (strchr(name, ':') != NULL) {
165			/* RFC 3986 4.2 */
166			bozo_printf(httpd, "<a href=\"./%s\">", urlname);
167			l += bozo_printf(httpd, "%s", htmlname);
168		} else {
169			bozo_printf(httpd, "<a href=\"%s\">", urlname);
170			l += bozo_printf(httpd, "%s", htmlname);
171		}
172		if (htmlname != name)
173			free(htmlname);
174		bozo_printf(httpd, "</a>");
175
176		/* NAMELEN spaces */
177		/*LINTED*/
178		assert(/*CONSTCOND*/sizeof(spacebuf) > NAMELEN);
179		i = (l < NAMELEN) ? (NAMELEN - l) : 0;
180		i++;
181		memset(spacebuf, ' ', (size_t)i);
182		spacebuf[i] = '\0';
183		bozo_printf(httpd, "%s", spacebuf);
184		l += i;
185
186		if (nostat)
187			bozo_printf(httpd, "?                         ?");
188		else {
189			tm = gmtime(&sb.st_mtime);
190			strftime(buf, sizeof buf, "%d-%b-%Y %R", tm);
191			l += bozo_printf(httpd, "%s", buf);
192
193			/* LMODLEN spaces */
194			/*LINTED*/
195			assert(/*CONSTCOND*/sizeof(spacebuf) > LMODLEN);
196			i = (l < (LMODLEN+NAMELEN+1)) ?
197				((LMODLEN+NAMELEN+1) - l) : 0;
198			i++;
199			memset(spacebuf, ' ', (size_t)i);
200			spacebuf[i] = '\0';
201			bozo_printf(httpd, "%s", spacebuf);
202
203			bozo_printf(httpd, "%12llukB",
204				    (unsigned long long)sb.st_size >> 10);
205		}
206		bozo_printf(httpd, "\r\n");
207	}
208
209	closedir(dp);
210	while (k--)
211        	free(deo[k]);
212	free(deo);
213	bozo_printf(httpd, "</pre>");
214	directory_hr(httpd);
215	bozo_printf(httpd, "</body></html>\r\n\r\n");
216	bozo_flush(httpd, stdout);
217
218done:
219	free(file);
220	free(printname);
221	return 1;
222}
223#endif /* NO_DIRINDEX_SUPPORT */
224
225