dir-index-bozo.c revision 1.25 
1/*	$NetBSD: dir-index-bozo.c,v 1.25 2015/12/29 04:21:46 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		bozoasprintf(httpd, &printname, "~%s/%s",
114			     request->hr_user, request->hr_file);
115	} else
116		printname = bozostrdup(httpd, request, request->hr_file);
117#else
118	printname = bozostrdup(httpd, request, request->hr_file);
119#endif /* !NO_USER_SUPPORT */
120
121	bozo_printf(httpd,
122		"<html><head><title>Index of %s</title></head>\r\n",
123		printname);
124	bozo_printf(httpd, "<body><h1>Index of %s</h1>\r\n",
125		printname);
126	bozo_printf(httpd, "<pre>\r\n");
127#define NAMELEN 40
128#define LMODLEN 19
129	bozo_printf(httpd, "Name                                     "
130	    "Last modified          "
131	    "Size\n");
132	bozo_printf(httpd, "</pre>");
133	directory_hr(httpd);
134	bozo_printf(httpd, "<pre>");
135
136	for (j = k = scandir(dirpath, &de, NULL, alphasort), deo = de;
137	    j--; de++) {
138		int nostat = 0;
139		char *name = (*de)->d_name;
140		char *urlname, *htmlname;
141
142		if (strcmp(name, ".") == 0 ||
143		    (strcmp(name, "..") != 0 &&
144		     httpd->hide_dots && name[0] == '.'))
145			continue;
146
147		snprintf(buf, sizeof buf, "%s/%s", dirpath, name);
148		if (stat(buf, &sb))
149			nostat = 1;
150
151		l = 0;
152
153		urlname = bozo_escape_rfc3986(httpd, name, 0);
154		htmlname = bozo_escape_html(httpd, name);
155		if (htmlname == NULL)
156			htmlname = name;
157		if (strcmp(name, "..") == 0) {
158			bozo_printf(httpd, "<a href=\"../\">");
159			l += bozo_printf(httpd, "Parent Directory");
160		} else if (S_ISDIR(sb.st_mode)) {
161			bozo_printf(httpd, "<a href=\"%s/\">", urlname);
162			l += bozo_printf(httpd, "%s/", htmlname);
163		} else if (strchr(name, ':') != NULL) {
164			/* RFC 3986 4.2 */
165			bozo_printf(httpd, "<a href=\"./%s\">", urlname);
166			l += bozo_printf(httpd, "%s", htmlname);
167		} else {
168			bozo_printf(httpd, "<a href=\"%s\">", urlname);
169			l += bozo_printf(httpd, "%s", htmlname);
170		}
171		if (htmlname != name)
172			free(htmlname);
173		bozo_printf(httpd, "</a>");
174
175		/* NAMELEN spaces */
176		/*LINTED*/
177		assert(/*CONSTCOND*/sizeof(spacebuf) > NAMELEN);
178		i = (l < NAMELEN) ? (NAMELEN - l) : 0;
179		i++;
180		memset(spacebuf, ' ', (size_t)i);
181		spacebuf[i] = '\0';
182		bozo_printf(httpd, "%s", spacebuf);
183		l += i;
184
185		if (nostat)
186			bozo_printf(httpd, "?                         ?");
187		else {
188			tm = gmtime(&sb.st_mtime);
189			strftime(buf, sizeof buf, "%d-%b-%Y %R", tm);
190			l += bozo_printf(httpd, "%s", buf);
191
192			/* LMODLEN spaces */
193			/*LINTED*/
194			assert(/*CONSTCOND*/sizeof(spacebuf) > LMODLEN);
195			i = (l < (LMODLEN+NAMELEN+1)) ?
196				((LMODLEN+NAMELEN+1) - l) : 0;
197			i++;
198			memset(spacebuf, ' ', (size_t)i);
199			spacebuf[i] = '\0';
200			bozo_printf(httpd, "%s", spacebuf);
201
202			bozo_printf(httpd, "%12llukB",
203				    (unsigned long long)sb.st_size >> 10);
204		}
205		bozo_printf(httpd, "\r\n");
206	}
207
208	closedir(dp);
209	while (k--)
210        	free(deo[k]);
211	free(deo);
212	bozo_printf(httpd, "</pre>");
213	directory_hr(httpd);
214	bozo_printf(httpd, "</body></html>\r\n\r\n");
215	bozo_flush(httpd, stdout);
216
217done:
218	free(file);
219	free(printname);
220	return 1;
221}
222#endif /* NO_DIRINDEX_SUPPORT */
223
224