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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)spec.c 8.1 (Berkeley) 6/6/93 34 * $FreeBSD: src/usr.sbin/mtree/spec.c,v 1.13.2.1 2000/06/28 02:33:17 joe Exp $ 35 * $DragonFly: src/usr.sbin/mtree/spec.c,v 1.2 2003/06/17 04:29:57 dillon Exp $ 36 */ 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 52 int lineno; /* Current spec line number. */ 53 54 static void set __P((char *, NODE *)); 55 static void unset __P((char *, NODE *)); 56 57 NODE * 58 spec() 59 { 60 register NODE *centry, *last; 61 register 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; 136 137 noparent: 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 } 167 168 static void 169 set(t, ip) 170 char *t; 171 NODE *ip; 172 { 173 register int type; 174 char *kw, *val = NULL; 175 struct group *gr; 176 struct passwd *pw; 177 mode_t *m; 178 int value; 179 char *ep; 180 181 for (; (kw = strtok(t, "= \t\n")); t = NULL) { 182 ip->flags |= type = parsekey(kw, &value); 183 if (value && (val = strtok(NULL, " \t\n")) == NULL) 184 errx(1, "line %d: missing value", lineno); 185 switch(type) { 186 case F_CKSUM: 187 ip->cksum = strtoul(val, &ep, 10); 188 if (*ep) 189 errx(1, "line %d: invalid checksum %s", 190 lineno, val); 191 break; 192 case F_MD5: 193 ip->md5digest = strdup(val); 194 if(!ip->md5digest) { 195 errx(1, "strdup"); 196 } 197 break; 198 case F_SHA1: 199 ip->sha1digest = strdup(val); 200 if(!ip->sha1digest) { 201 errx(1, "strdup"); 202 } 203 break; 204 case F_RMD160: 205 ip->rmd160digest = strdup(val); 206 if(!ip->rmd160digest) { 207 errx(1, "strdup"); 208 } 209 break; 210 case F_FLAGS: 211 if (strcmp("none", val) == 0) 212 ip->st_flags = 0; 213 else if (strtofflags(&val, &ip->st_flags, NULL) != 0) 214 errx(1, "line %d: invalid flag %s",lineno, val); 215 break; 216 case F_GID: 217 ip->st_gid = strtoul(val, &ep, 10); 218 if (*ep) 219 errx(1, "line %d: invalid gid %s", lineno, val); 220 break; 221 case F_GNAME: 222 if ((gr = getgrnam(val)) == NULL) 223 errx(1, "line %d: unknown group %s", lineno, val); 224 ip->st_gid = gr->gr_gid; 225 break; 226 case F_IGN: 227 /* just set flag bit */ 228 break; 229 case F_MODE: 230 if ((m = setmode(val)) == NULL) 231 errx(1, "line %d: invalid file mode %s", 232 lineno, val); 233 ip->st_mode = getmode(m, 0); 234 free(m); 235 break; 236 case F_NLINK: 237 ip->st_nlink = strtoul(val, &ep, 10); 238 if (*ep) 239 errx(1, "line %d: invalid link count %s", 240 lineno, val); 241 break; 242 case F_SIZE: 243 ip->st_size = strtoq(val, &ep, 10); 244 if (*ep) 245 errx(1, "line %d: invalid size %s", 246 lineno, val); 247 break; 248 case F_SLINK: 249 if ((ip->slink = strdup(val)) == NULL) 250 errx(1, "strdup"); 251 break; 252 case F_TIME: 253 ip->st_mtimespec.tv_sec = strtoul(val, &ep, 10); 254 if (*ep != '.') 255 errx(1, "line %d: invalid time %s", 256 lineno, val); 257 val = ep + 1; 258 ip->st_mtimespec.tv_nsec = strtoul(val, &ep, 10); 259 if (*ep) 260 errx(1, "line %d: invalid time %s", 261 lineno, val); 262 break; 263 case F_TYPE: 264 switch(*val) { 265 case 'b': 266 if (!strcmp(val, "block")) 267 ip->type = F_BLOCK; 268 break; 269 case 'c': 270 if (!strcmp(val, "char")) 271 ip->type = F_CHAR; 272 break; 273 case 'd': 274 if (!strcmp(val, "dir")) 275 ip->type = F_DIR; 276 break; 277 case 'f': 278 if (!strcmp(val, "file")) 279 ip->type = F_FILE; 280 if (!strcmp(val, "fifo")) 281 ip->type = F_FIFO; 282 break; 283 case 'l': 284 if (!strcmp(val, "link")) 285 ip->type = F_LINK; 286 break; 287 case 's': 288 if (!strcmp(val, "socket")) 289 ip->type = F_SOCK; 290 break; 291 default: 292 errx(1, "line %d: unknown file type %s", 293 lineno, val); 294 } 295 break; 296 case F_UID: 297 ip->st_uid = strtoul(val, &ep, 10); 298 if (*ep) 299 errx(1, "line %d: invalid uid %s", lineno, val); 300 break; 301 case F_UNAME: 302 if ((pw = getpwnam(val)) == NULL) 303 errx(1, "line %d: unknown user %s", lineno, val); 304 ip->st_uid = pw->pw_uid; 305 break; 306 } 307 } 308 } 309 310 static void 311 unset(t, ip) 312 char *t; 313 register NODE *ip; 314 { 315 register char *p; 316 317 while ((p = strtok(t, "\n\t "))) 318 ip->flags &= ~parsekey(p, NULL); 319 } 320