usr.sbin/mtree/misc.c

   1 /*      $NetBSD: misc.c,v 1.29 2006/10/16 00:11:57 christos Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1991, 1993
   5  *      The Regents of the University of California.  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 in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, 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  *      @(#)misc.c      8.1 (Berkeley) 6/6/93
  32  */
  33
  34 #if HAVE_NBTOOL_CONFIG_H
  35 #include "nbtool_config.h"
  36 #endif
  37
  38 #include <sys/cdefs.h>
  39 #if defined(__RCSID) && !defined(lint)
  40 __RCSID("$NetBSD: misc.c,v 1.29 2006/10/16 00:11:57 christos Exp $");
  41 #endif /* not lint */
  42
  43 #include <sys/types.h>
  44 #include <sys/stat.h>
  45
  46 #include <stdarg.h>
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50
  51 #include "extern.h"
  52
  53 typedef struct _key {
  54         const char      *name;          /* key name */
  55         u_int           val;            /* value */
  56
  57 #define NEEDVALUE       0x01
  58         u_int           flags;
  59 } KEY;
  60
  61 /* NB: the following tables must be sorted lexically. */
  62 static KEY keylist[] = {
  63         {"cksum",       F_CKSUM,        NEEDVALUE},
  64         {"device",      F_DEV,          NEEDVALUE},
  65         {"flags",       F_FLAGS,        NEEDVALUE},
  66         {"gid",         F_GID,          NEEDVALUE},
  67         {"gname",       F_GNAME,        NEEDVALUE},
  68         {"ignore",      F_IGN,          0},
  69         {"link",        F_SLINK,        NEEDVALUE},
  70         {"md5",         F_MD5,          NEEDVALUE},
  71         {"md5digest",   F_MD5,          NEEDVALUE},
  72         {"mode",        F_MODE,         NEEDVALUE},
  73         {"nlink",       F_NLINK,        NEEDVALUE},
  74         {"optional",    F_OPT,          0},
  75         {"rmd160",      F_RMD160,       NEEDVALUE},
  76         {"rmd160digest",F_RMD160,       NEEDVALUE},
  77         {"sha1",        F_SHA1,         NEEDVALUE},
  78         {"sha1digest",  F_SHA1,         NEEDVALUE},
  79         {"sha256",      F_SHA256,       NEEDVALUE},
  80         {"sha256digest",F_SHA256,       NEEDVALUE},
  81         {"sha384",      F_SHA384,       NEEDVALUE},
  82         {"sha384digest",F_SHA384,       NEEDVALUE},
  83         {"sha512",      F_SHA512,       NEEDVALUE},
  84         {"sha512digest",F_SHA512,       NEEDVALUE},
  85         {"size",        F_SIZE,         NEEDVALUE},
  86         {"tags",        F_TAGS,         NEEDVALUE},
  87         {"time",        F_TIME,         NEEDVALUE},
  88         {"type",        F_TYPE,         NEEDVALUE},
  89         {"uid",         F_UID,          NEEDVALUE},
  90         {"uname",       F_UNAME,        NEEDVALUE}
  91 };
  92
  93 static KEY typelist[] = {
  94         {"block",       F_BLOCK,        0},
  95         {"char",        F_CHAR,         0},
  96         {"dir",         F_DIR,          0},
  97 #ifdef S_IFDOOR
  98         {"door",        F_DOOR,         0},
  99 #endif
 100         {"fifo",        F_FIFO,         0},
 101         {"file",        F_FILE,         0},
 102         {"link",        F_LINK,         0},
 103         {"socket",      F_SOCK,         0},
 104 };
 105
 106 slist_t excludetags, includetags;
 107 int     keys = KEYDEFAULT;
 108
 109
 110 int keycompare(const void *, const void *);
 111
 112 u_int
 113 parsekey(const char *name, int *needvaluep)
 114 {
 115         static int allbits;
 116         KEY *k, tmp;
 117
 118         if (allbits == 0) {
 119                 size_t i;
 120
 121                 for (i = 0; i < sizeof(keylist) / sizeof(KEY); i++)
 122                         allbits |= keylist[i].val;
 123         }
 124         tmp.name = name;
 125         if (strcmp(name, "all") == 0)
 126                 return (allbits);
 127         k = (KEY *)bsearch(&tmp, keylist, sizeof(keylist) / sizeof(KEY),
 128             sizeof(KEY), keycompare);
 129         if (k == NULL)
 130                 mtree_err("unknown keyword `%s'", name);
 131
 132         if (needvaluep)
 133                 *needvaluep = k->flags & NEEDVALUE ? 1 : 0;
 134
 135         return (k->val);
 136 }
 137
 138 u_int
 139 parsetype(const char *name)
 140 {
 141         KEY *k, tmp;
 142
 143         tmp.name = name;
 144         k = (KEY *)bsearch(&tmp, typelist, sizeof(typelist) / sizeof(KEY),
 145             sizeof(KEY), keycompare);
 146         if (k == NULL)
 147                 mtree_err("unknown file type `%s'", name);
 148
 149         return (k->val);
 150 }
 151
 152 int
 153 keycompare(const void *a, const void *b)
 154 {
 155
 156         return (strcmp(((const KEY *)a)->name, ((const KEY *)b)->name));
 157 }
 158
 159 void
 160 mtree_err(const char *fmt, ...)
 161 {
 162         va_list ap;
 163
 164         va_start(ap, fmt);
 165         vwarnx(fmt, ap);
 166         va_end(ap);
 167         if (mtree_lineno)
 168                 warnx("failed at line %lu of the specification",
 169                     (u_long) mtree_lineno);
 170         exit(1);
 171         /* NOTREACHED */
 172 }
 173
 174 void
 175 addtag(slist_t *list, char *elem)
 176 {
 177
 178 #define TAG_CHUNK 20
 179
 180         if ((list->count % TAG_CHUNK) == 0) {
 181                 char **new;
 182
 183                 new = (char **)realloc(list->list, (list->count + TAG_CHUNK)
 184                     * sizeof(char *));
 185                 if (new == NULL)
 186                         mtree_err("memory allocation error");
 187                 list->list = new;
 188         }
 189         list->list[list->count] = elem;
 190         list->count++;
 191 }
 192
 193 void
 194 parsetags(slist_t *list, char *args)
 195 {
 196         char    *p, *e;
 197         int     len;
 198
 199         if (args == NULL) {
 200                 addtag(list, NULL);
 201                 return;
 202         }
 203         while ((p = strsep(&args, ",")) != NULL) {
 204                 if (*p == '\0')
 205                         continue;
 206                 len = strlen(p) + 3;    /* "," + p + ",\0" */
 207                 if ((e = malloc(len)) == NULL)
 208                         mtree_err("memory allocation error");
 209                 snprintf(e, len, ",%s,", p);
 210                 addtag(list, e);
 211         }
 212 }
 213
 214 /*
 215  * matchtags
 216  *      returns 0 if there's a match from the exclude list in the node's tags,
 217  *      or there's an include list and no match.
 218  *      return 1 otherwise.
 219  */
 220 int
 221 matchtags(NODE *node)
 222 {
 223         int     i;
 224
 225         if (node->tags) {
 226                 for (i = 0; i < excludetags.count; i++)
 227                         if (strstr(node->tags, excludetags.list[i]))
 228                                 break;
 229                 if (i < excludetags.count)
 230                         return (0);
 231
 232                 for (i = 0; i < includetags.count; i++)
 233                         if (strstr(node->tags, includetags.list[i]))
 234                                 break;
 235                 if (i > 0 && i == includetags.count)
 236                         return (0);
 237         } else if (includetags.count > 0) {
 238                 return (0);
 239         }
 240         return (1);
 241 }
 242
 243 u_int
 244 nodetoino(u_int type)
 245 {
 246
 247         switch (type) {
 248         case F_BLOCK:
 249                 return S_IFBLK;
 250         case F_CHAR:
 251                 return S_IFCHR;
 252         case F_DIR:
 253                 return S_IFDIR;
 254         case F_FIFO:
 255                 return S_IFIFO;
 256         case F_FILE:
 257                 return S_IFREG;
 258         case F_LINK:
 259                 return S_IFLNK;
 260 #ifdef S_IFSOCK
 261         case F_SOCK:
 262                 return S_IFSOCK;
 263 #endif
 264         default:
 265                 printf("unknown type %d", type);
 266                 abort();
 267         }
 268         /* NOTREACHED */
 269 }
 270
 271 const char *
 272 nodetype(u_int type)
 273 {
 274
 275         return (inotype(nodetoino(type)));
 276 }
 277
 278
 279 const char *
 280 inotype(u_int type)
 281 {
 282
 283         switch (type & S_IFMT) {
 284         case S_IFBLK:
 285                 return ("block");
 286         case S_IFCHR:
 287                 return ("char");
 288         case S_IFDIR:
 289                 return ("dir");
 290         case S_IFIFO:
 291                 return ("fifo");
 292         case S_IFREG:
 293                 return ("file");
 294         case S_IFLNK:
 295                 return ("link");
 296 #ifdef S_IFSOCK
 297         case S_IFSOCK:
 298                 return ("socket");
 299 #endif
 300 #ifdef S_IFDOOR
 301         case S_IFDOOR:
 302                 return ("door");
 303 #endif
 304         default:
 305                 return ("unknown");
 306         }
 307         /* NOTREACHED */
 308 }