dir-index-bozo.c revision 1.13
1/* $NetBSD: dir-index-bozo.c,v 1.13 2011/11/18 09:51:31 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) 1997-2011 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; 130 131 if (strcmp(name, ".") == 0 || 132 (strcmp(name, "..") != 0 && 133 httpd->hide_dots && name[0] == '.')) 134 continue; 135 136 snprintf(buf, sizeof buf, "%s/%s", dirname, name); 137 if (stat(buf, &sb)) 138 nostat = 1; 139 140 l = 0; 141 142 if (strcmp(name, "..") == 0) { 143 bozo_printf(httpd, "<a href=\"../\">"); 144 l += bozo_printf(httpd, "Parent Directory"); 145 } else if (S_ISDIR(sb.st_mode)) { 146 bozo_printf(httpd, "<a href=\"%s/\">", name); 147 l += bozo_printf(httpd, "%s/", name); 148 } else if (strchr(name, ':') != NULL) { 149 /* RFC 3986 4.2 */ 150 bozo_printf(httpd, "<a href=\"./%s\">", name); 151 l += bozo_printf(httpd, "%s", name); 152 } else { 153 bozo_printf(httpd, "<a href=\"%s\">", name); 154 l += bozo_printf(httpd, "%s", name); 155 } 156 bozo_printf(httpd, "</a>"); 157 158 /* NAMELEN spaces */ 159 /*LINTED*/ 160 assert(/*CONSTCOND*/sizeof(spacebuf) > NAMELEN); 161 i = (l < NAMELEN) ? (NAMELEN - l) : 0; 162 i++; 163 memset(spacebuf, ' ', (size_t)i); 164 spacebuf[i] = '\0'; 165 bozo_printf(httpd, spacebuf); 166 l += i; 167 168 if (nostat) 169 bozo_printf(httpd, "? ?"); 170 else { 171 tm = gmtime(&sb.st_mtime); 172 strftime(buf, sizeof buf, "%d-%b-%Y %R", tm); 173 l += bozo_printf(httpd, "%s", buf); 174 175 /* LMODLEN spaces */ 176 /*LINTED*/ 177 assert(/*CONSTCOND*/sizeof(spacebuf) > LMODLEN); 178 i = (l < (LMODLEN+NAMELEN+1)) ? 179 ((LMODLEN+NAMELEN+1) - l) : 0; 180 i++; 181 memset(spacebuf, ' ', (size_t)i); 182 spacebuf[i] = '\0'; 183 bozo_printf(httpd, spacebuf); 184 185 bozo_printf(httpd, "%7ukB", 186 ((unsigned)((unsigned)(sb.st_size) >> 10))); 187 } 188 bozo_printf(httpd, "\r\n"); 189 } 190 191 closedir(dp); 192 while (k--) 193 free(deo[k]); 194 free(deo); 195 bozo_printf(httpd, "</pre>"); 196 directory_hr(httpd); 197 bozo_printf(httpd, "</body></html>\r\n\r\n"); 198 bozo_flush(httpd, stdout); 199 200done: 201 if (file) 202 free(file); 203 return 1; 204} 205#endif /* NO_DIRINDEX_SUPPORT */ 206 207