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dir-index-bozo.c revision 1.1 
      1 /*	$eterna: dir-index-bozo.c,v 1.7 2006/05/17 08:18:44 mrg Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997-2006 Matthew R. Green
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer and
     14  *    dedication in the documentation and/or other materials provided
     15  *    with the distribution.
     16  * 3. The name of the author may not be used to endorse or promote products
     17  *    derived from this software without specific prior written permission.
     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 <time.h>
     43 #include <assert.h>
     44 
     45 #include "bozohttpd.h"
     46 
     47 	int	Xflag;		/* do directory indexing */
     48 	int	Hflag;		/* hide .* */
     49 
     50 /*
     51  * output a directory index.  return 1 if it actually did something..
     52  */
     53 int
     54 directory_index(http_req *request, const char *dirname, int isindex)
     55 {
     56 	struct stat sb;
     57 	struct dirent *de;
     58 	struct tm *tm;
     59 	DIR *dp;
     60 	char buf[MAXPATHLEN];
     61 	char spacebuf[48];
     62 	int l, i;
     63 
     64 	dp = NULL;	/* XXX */
     65 
     66 	if (!isindex || !Xflag)
     67 		return 0;
     68 
     69 	if (strlen(dirname) <= strlen(index_html))
     70 		dirname = ".";
     71 	else {
     72 		char *file = bozostrdup(dirname);
     73 
     74 		file[strlen(file) - strlen(index_html)] = '\0';
     75 		dirname = file;
     76 	}
     77 	debug((DEBUG_FAT, "directory_index: dirname ``%s''", dirname));
     78 	if (stat(dirname, &sb) < 0 ||
     79 	    (dp = opendir(dirname)) == NULL) {
     80 		if (errno == EPERM)
     81 			http_error(403, request,
     82 			    "no permission to open directory");
     83 		else if (errno == ENOENT)
     84 			http_error(404, request, "no file");
     85 		else
     86 			http_error(500, request, "open directory");
     87 		/* NOTREACHED */
     88 	}
     89 
     90 	bozoprintf("%s 200 OK\r\n", request->hr_proto);
     91 
     92 	if (request->hr_proto != http_09) {
     93 		print_header(request, NULL, "text/html", "");
     94 		bozoprintf("\r\n");
     95 	}
     96 	bozoflush(stdout);
     97 
     98 	if (request->hr_method == HTTP_HEAD) {
     99 		closedir(dp);
    100 		return 1;
    101 	}
    102 
    103 	bozoprintf("<html><head><title>Index of %s</title></head>\r\n",
    104 	    request->hr_url);
    105 	bozoprintf("<body><h1>Index of %s</h1>\r\n", request->hr_url);
    106 	bozoprintf("<pre>\r\n");
    107 #define NAMELEN 40
    108 #define LMODLEN 19
    109 	bozoprintf("Name                                     "
    110 	    "Last modified          "
    111 	    "Size\n");
    112 	bozoprintf("<hr noshade align=\"left\" width=\"80%%\">\r\n\r\n");
    113 
    114 	while ((de = readdir(dp)) != NULL) {
    115 		int nostat = 0;
    116 		char *name = de->d_name;
    117 
    118 		if (strcmp(name, ".") == 0 ||
    119 		    (strcmp(name, "..") != 0 && Hflag && name[0] == '.'))
    120 			continue;
    121 
    122 		snprintf(buf, sizeof buf, "%s/%s", dirname, name);
    123 		if (stat(buf, &sb))
    124 			nostat = 1;
    125 
    126 		l = 0;
    127 
    128 		if (strcmp(name, "..") == 0) {
    129 			bozoprintf("<a href=\"../\">");
    130 			l += bozoprintf("Parent Directory");
    131 		} else if (S_ISDIR(sb.st_mode)) {
    132 			bozoprintf("<a href=\"%s/\">", name);
    133 			l += bozoprintf("%s/", name);
    134 		} else {
    135 			bozoprintf("<a href=\"%s\">", name);
    136 			l += bozoprintf("%s", name);
    137 		}
    138 		bozoprintf("</a>");
    139 
    140 		/* NAMELEN spaces */
    141 		assert(sizeof(spacebuf) > NAMELEN);
    142 		i = (l < NAMELEN) ? (NAMELEN - l) : 0;
    143 		i++;
    144 		memset(spacebuf, ' ', i);
    145 		spacebuf[i] = '\0';
    146 		bozoprintf(spacebuf);
    147 		l += i;
    148 
    149 		if (nostat)
    150 			bozoprintf("?                         ?");
    151 		else {
    152 			tm = gmtime(&sb.st_mtime);
    153 			strftime(buf, sizeof buf, "%d-%b-%Y %R", tm);
    154 			l += bozoprintf("%s", buf);
    155 
    156 			/* LMODLEN spaces */
    157 			assert(sizeof(spacebuf) > LMODLEN);
    158 			i = (l < (LMODLEN+NAMELEN+1)) ? ((LMODLEN+NAMELEN+1) - l) : 0;
    159 			i++;
    160 			memset(spacebuf, ' ', i);
    161 			spacebuf[i] = '\0';
    162 			bozoprintf(spacebuf);
    163 
    164 			bozoprintf("%7ukB",
    165 			    ((unsigned int)(sb.st_size >> 10)));
    166 		}
    167 		bozoprintf("\r\n");
    168 	}
    169 
    170 	closedir(dp);
    171 	bozoprintf("</pre><hr></body></html>\r\n");
    172 	bozoflush(stdout);
    173 
    174 	return 1;
    175 }
    176 #endif /* NO_DIRINDEX_SUPPORT */
    177