spec.c revision 121300
1/*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#if 0 31#ifndef lint 32static char sccsid[] = "@(#)spec.c 8.1 (Berkeley) 6/6/93"; 33#endif /* not lint */ 34#endif 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: head/usr.sbin/mtree/spec.c 121300 2003-10-21 08:27:05Z phk $"); 37 38#include <sys/types.h> 39#include <sys/stat.h> 40#include <ctype.h> 41#include <err.h> 42#include <errno.h> 43#include <fts.h> 44#include <grp.h> 45#include <pwd.h> 46#include <stdio.h> 47#include <unistd.h> 48#include <vis.h> 49#include "mtree.h" 50#include "extern.h" 51 52int lineno; /* Current spec line number. */ 53 54static void set(char *, NODE *); 55static void unset(char *, NODE *); 56 57NODE * 58spec(void) 59{ 60 NODE *centry, *last; 61 char *p; 62 NODE ginfo, *root; 63 int c_cur, c_next; 64 char buf[2048]; 65 66 centry = last = root = NULL; 67 bzero(&ginfo, sizeof(ginfo)); 68 c_cur = c_next = 0; 69 for (lineno = 1; fgets(buf, sizeof(buf), stdin); 70 ++lineno, c_cur = c_next, c_next = 0) { 71 /* Skip empty lines. */ 72 if (buf[0] == '\n') 73 continue; 74 75 /* Find end of line. */ 76 if ((p = index(buf, '\n')) == NULL) 77 errx(1, "line %d too long", lineno); 78 79 /* See if next line is continuation line. */ 80 if (p[-1] == '\\') { 81 --p; 82 c_next = 1; 83 } 84 85 /* Null-terminate the line. */ 86 *p = '\0'; 87 88 /* Skip leading whitespace. */ 89 for (p = buf; *p && isspace(*p); ++p); 90 91 /* If nothing but whitespace or comment char, continue. */ 92 if (!*p || *p == '#') 93 continue; 94 95#ifdef DEBUG 96 (void)fprintf(stderr, "line %d: {%s}\n", lineno, p); 97#endif 98 if (c_cur) { 99 set(p, centry); 100 continue; 101 } 102 103 /* Grab file name, "$", "set", or "unset". */ 104 if ((p = strtok(p, "\n\t ")) == NULL) 105 errx(1, "line %d: missing field", lineno); 106 107 if (p[0] == '/') 108 switch(p[1]) { 109 case 's': 110 if (strcmp(p + 1, "set")) 111 break; 112 set(NULL, &ginfo); 113 continue; 114 case 'u': 115 if (strcmp(p + 1, "unset")) 116 break; 117 unset(NULL, &ginfo); 118 continue; 119 } 120 121 if (index(p, '/')) 122 errx(1, "line %d: slash character in file name", 123 lineno); 124 125 if (!strcmp(p, "..")) { 126 /* Don't go up, if haven't gone down. */ 127 if (!root) 128 goto noparent; 129 if (last->type != F_DIR || last->flags & F_DONE) { 130 if (last == root) 131 goto noparent; 132 last = last->parent; 133 } 134 last->flags |= F_DONE; 135 continue; 136 137noparent: errx(1, "line %d: no parent node", lineno); 138 } 139 140 if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL) 141 errx(1, "calloc"); 142 *centry = ginfo; 143#define MAGIC "?*[" 144 if (strpbrk(p, MAGIC)) 145 centry->flags |= F_MAGIC; 146 if (strunvis(centry->name, p) == -1) { 147 warnx("filename %s is ill-encoded and literally used", 148 p); 149 strcpy(centry->name, p); 150 } 151 set(NULL, centry); 152 153 if (!root) { 154 last = root = centry; 155 root->parent = root; 156 } else if (last->type == F_DIR && !(last->flags & F_DONE)) { 157 centry->parent = last; 158 last = last->child = centry; 159 } else { 160 centry->parent = last->parent; 161 centry->prev = last; 162 last = last->next = centry; 163 } 164 } 165 return (root); 166} 167 168static void 169set(char *t, NODE *ip) 170{ 171 int type; 172 char *kw, *val = NULL; 173 struct group *gr; 174 struct passwd *pw; 175 mode_t *m; 176 int value; 177 char *ep; 178 179 for (; (kw = strtok(t, "= \t\n")); t = NULL) { 180 ip->flags |= type = parsekey(kw, &value); 181 if (value && (val = strtok(NULL, " \t\n")) == NULL) 182 errx(1, "line %d: missing value", lineno); 183 switch(type) { 184 case F_CKSUM: 185 ip->cksum = strtoul(val, &ep, 10); 186 if (*ep) 187 errx(1, "line %d: invalid checksum %s", 188 lineno, val); 189 break; 190 case F_MD5: 191 ip->md5digest = strdup(val); 192 if(!ip->md5digest) { 193 errx(1, "strdup"); 194 } 195 break; 196 case F_SHA1: 197 ip->sha1digest = strdup(val); 198 if(!ip->sha1digest) { 199 errx(1, "strdup"); 200 } 201 break; 202 case F_RMD160: 203 ip->rmd160digest = strdup(val); 204 if(!ip->rmd160digest) { 205 errx(1, "strdup"); 206 } 207 break; 208 case F_FLAGS: 209 if (strcmp("none", val) == 0) 210 ip->st_flags = 0; 211 else if (strtofflags(&val, &ip->st_flags, NULL) != 0) 212 errx(1, "line %d: invalid flag %s",lineno, val); 213 break; 214 case F_GID: 215 ip->st_gid = strtoul(val, &ep, 10); 216 if (*ep) 217 errx(1, "line %d: invalid gid %s", lineno, val); 218 break; 219 case F_GNAME: 220 if ((gr = getgrnam(val)) == NULL) 221 errx(1, "line %d: unknown group %s", lineno, val); 222 ip->st_gid = gr->gr_gid; 223 break; 224 case F_IGN: 225 /* just set flag bit */ 226 break; 227 case F_MODE: 228 if ((m = setmode(val)) == NULL) 229 errx(1, "line %d: invalid file mode %s", 230 lineno, val); 231 ip->st_mode = getmode(m, 0); 232 free(m); 233 break; 234 case F_NLINK: 235 ip->st_nlink = strtoul(val, &ep, 10); 236 if (*ep) 237 errx(1, "line %d: invalid link count %s", 238 lineno, val); 239 break; 240 case F_SIZE: 241 ip->st_size = strtoq(val, &ep, 10); 242 if (*ep) 243 errx(1, "line %d: invalid size %s", 244 lineno, val); 245 break; 246 case F_SLINK: 247 if ((ip->slink = strdup(val)) == NULL) 248 errx(1, "strdup"); 249 break; 250 case F_TIME: 251 ip->st_mtimespec.tv_sec = strtoul(val, &ep, 10); 252 if (*ep != '.') 253 errx(1, "line %d: invalid time %s", 254 lineno, val); 255 val = ep + 1; 256 ip->st_mtimespec.tv_nsec = strtoul(val, &ep, 10); 257 if (*ep) 258 errx(1, "line %d: invalid time %s", 259 lineno, val); 260 break; 261 case F_TYPE: 262 switch(*val) { 263 case 'b': 264 if (!strcmp(val, "block")) 265 ip->type = F_BLOCK; 266 break; 267 case 'c': 268 if (!strcmp(val, "char")) 269 ip->type = F_CHAR; 270 break; 271 case 'd': 272 if (!strcmp(val, "dir")) 273 ip->type = F_DIR; 274 break; 275 case 'f': 276 if (!strcmp(val, "file")) 277 ip->type = F_FILE; 278 if (!strcmp(val, "fifo")) 279 ip->type = F_FIFO; 280 break; 281 case 'l': 282 if (!strcmp(val, "link")) 283 ip->type = F_LINK; 284 break; 285 case 's': 286 if (!strcmp(val, "socket")) 287 ip->type = F_SOCK; 288 break; 289 default: 290 errx(1, "line %d: unknown file type %s", 291 lineno, val); 292 } 293 break; 294 case F_UID: 295 ip->st_uid = strtoul(val, &ep, 10); 296 if (*ep) 297 errx(1, "line %d: invalid uid %s", lineno, val); 298 break; 299 case F_UNAME: 300 if ((pw = getpwnam(val)) == NULL) 301 errx(1, "line %d: unknown user %s", lineno, val); 302 ip->st_uid = pw->pw_uid; 303 break; 304 } 305 } 306} 307 308static void 309unset(char *t, NODE *ip) 310{ 311 char *p; 312 313 while ((p = strtok(t, "\n\t "))) 314 ip->flags &= ~parsekey(p, NULL); 315} 316