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dir-index-bozo.c revision 1.6 
      1 /*	$NetBSD: dir-index-bozo.c,v 1.6 2009/04/18 07:28:24 mrg Exp $	*/
      2 
      3 /*	$eterna: dir-index-bozo.c,v 1.14 2009/04/18 01:48:18 mrg Exp $	*/
      4 
      5 /*
      6  * Copyright (c) 1997-2009 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 	int	Xflag;		/* do directory indexing */
     49 	int	Hflag;		/* hide .* */
     50 
     51 static void
     52 directory_hr(void)
     53 {
     54 
     55 	bozoprintf("<hr noshade align=\"left\" width=\"80%%\">\r\n\r\n");
     56 }
     57 
     58 /*
     59  * output a directory index.  return 1 if it actually did something..
     60  */
     61 int
     62 directory_index(http_req *request, const char *dirname, int isindex)
     63 {
     64 	struct stat sb;
     65 	struct dirent *de;
     66 	struct tm *tm;
     67 	DIR *dp;
     68 	char buf[MAXPATHLEN];
     69 	char spacebuf[48];
     70 	char *file = NULL;
     71 	int l, i;
     72 
     73 	if (!isindex || !Xflag)
     74 		return 0;
     75 
     76 	if (strlen(dirname) <= strlen(index_html))
     77 		dirname = ".";
     78 	else {
     79 		file = bozostrdup(dirname);
     80 
     81 		file[strlen(file) - strlen(index_html)] = '\0';
     82 		dirname = file;
     83 	}
     84 	debug((DEBUG_FAT, "directory_index: dirname ``%s''", dirname));
     85 	if (stat(dirname, &sb) < 0 ||
     86 	    (dp = opendir(dirname)) == NULL) {
     87 		if (errno == EPERM)
     88 			(void)http_error(403, request,
     89 			    "no permission to open directory");
     90 		else if (errno == ENOENT)
     91 			(void)http_error(404, request, "no file");
     92 		else
     93 			(void)http_error(500, request, "open directory");
     94 		goto done;
     95 		/* NOTREACHED */
     96 	}
     97 
     98 	bozoprintf("%s 200 OK\r\n", request->hr_proto);
     99 
    100 	if (request->hr_proto != http_09) {
    101 		print_header(request, NULL, "text/html", "");
    102 		bozoprintf("\r\n");
    103 	}
    104 	bozoflush(stdout);
    105 
    106 	if (request->hr_method == HTTP_HEAD) {
    107 		closedir(dp);
    108 		goto done;
    109 	}
    110 
    111 	bozoprintf("<html><head><title>Index of %s</title></head>\r\n",
    112 	    request->hr_file);
    113 	bozoprintf("<body><h1>Index of %s</h1>\r\n", request->hr_file);
    114 	bozoprintf("<pre>\r\n");
    115 #define NAMELEN 40
    116 #define LMODLEN 19
    117 	bozoprintf("Name                                     "
    118 	    "Last modified          "
    119 	    "Size\n");
    120 	bozoprintf("</pre>");
    121 	directory_hr();
    122 	bozoprintf("<pre>");
    123 
    124 	while ((de = readdir(dp)) != NULL) {
    125 		int nostat = 0;
    126 		char *name = de->d_name;
    127 
    128 		if (strcmp(name, ".") == 0 ||
    129 		    (strcmp(name, "..") != 0 && Hflag && name[0] == '.'))
    130 			continue;
    131 
    132 		snprintf(buf, sizeof buf, "%s/%s", dirname, name);
    133 		if (stat(buf, &sb))
    134 			nostat = 1;
    135 
    136 		l = 0;
    137 
    138 		if (strcmp(name, "..") == 0) {
    139 			bozoprintf("<a href=\"../\">");
    140 			l += bozoprintf("Parent Directory");
    141 		} else if (S_ISDIR(sb.st_mode)) {
    142 			bozoprintf("<a href=\"%s/\">", name);
    143 			l += bozoprintf("%s/", name);
    144 		} else {
    145 			bozoprintf("<a href=\"%s\">", name);
    146 			l += bozoprintf("%s", name);
    147 		}
    148 		bozoprintf("</a>");
    149 
    150 		/* NAMELEN spaces */
    151 		assert(sizeof(spacebuf) > NAMELEN);
    152 		i = (l < NAMELEN) ? (NAMELEN - l) : 0;
    153 		i++;
    154 		memset(spacebuf, ' ', i);
    155 		spacebuf[i] = '\0';
    156 		bozoprintf(spacebuf);
    157 		l += i;
    158 
    159 		if (nostat)
    160 			bozoprintf("?                         ?");
    161 		else {
    162 			tm = gmtime(&sb.st_mtime);
    163 			strftime(buf, sizeof buf, "%d-%b-%Y %R", tm);
    164 			l += bozoprintf("%s", buf);
    165 
    166 			/* LMODLEN spaces */
    167 			assert(sizeof(spacebuf) > LMODLEN);
    168 			i = (l < (LMODLEN+NAMELEN+1)) ? ((LMODLEN+NAMELEN+1) - l) : 0;
    169 			i++;
    170 			memset(spacebuf, ' ', i);
    171 			spacebuf[i] = '\0';
    172 			bozoprintf(spacebuf);
    173 
    174 			bozoprintf("%7ukB",
    175 			    ((unsigned int)(sb.st_size >> 10)));
    176 		}
    177 		bozoprintf("\r\n");
    178 	}
    179 
    180 	closedir(dp);
    181 	bozoprintf("</pre>");
    182 	directory_hr();
    183 	bozoprintf("</body></html>\r\n\r\n");
    184 	bozoflush(stdout);
    185 
    186 done:
    187 	if (file)
    188 		free(file);
    189 	return 1;
    190 }
    191 #endif /* NO_DIRINDEX_SUPPORT */
    192