1 /* $NetBSD: spec.c,v 1.18 1999/12/01 22:14:46 wennmach Exp $ */ 2 3 /*- 4 * Copyright (c) 1989, 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)spec.c 8.2 (Berkeley) 4/28/95"; 40 #else 41 __RCSID("$NetBSD: spec.c,v 1.18 1999/12/01 22:14:46 wennmach Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 #include <sys/stat.h> 47 #include <ctype.h> 48 #include <errno.h> 49 #include <fts.h> 50 #include <grp.h> 51 #include <pwd.h> 52 #include <stdio.h> 53 #include <string.h> 54 #include <unistd.h> 55 #include <vis.h> 56 57 #include "mtree.h" 58 #include "extern.h" 59 60 int lineno; /* Current spec line number. */ 61 62 static void set __P((char *, NODE *)); 63 static void unset __P((char *, NODE *)); 64 65 NODE * 66 spec() 67 { 68 NODE *centry, *last; 69 char *p; 70 NODE ginfo, *root; 71 int c_cur, c_next; 72 char buf[2048]; 73 74 root = NULL; 75 centry = last = NULL; 76 memset(&ginfo, 0, sizeof(ginfo)); 77 c_cur = c_next = 0; 78 for (lineno = 1; fgets(buf, sizeof(buf), stdin); 79 ++lineno, c_cur = c_next, c_next = 0) { 80 /* Skip empty lines. */ 81 if (buf[0] == '\n') 82 continue; 83 84 /* Find end of line. */ 85 if ((p = strchr(buf, '\n')) == NULL) 86 mtree_err("line %d too long", lineno); 87 88 /* See if next line is continuation line. */ 89 if (p[-1] == '\\') { 90 --p; 91 c_next = 1; 92 } 93 94 /* Null-terminate the line. */ 95 *p = '\0'; 96 97 /* Skip leading whitespace. */ 98 for (p = buf; *p && isspace((unsigned char)*p); ++p); 99 100 /* If nothing but whitespace or comment char, continue. */ 101 if (!*p || *p == '#') 102 continue; 103 104 #ifdef DEBUG 105 (void)fprintf(stderr, "line %d: {%s}\n", lineno, p); 106 #endif 107 if (c_cur) { 108 set(p, centry); 109 continue; 110 } 111 112 /* Grab file name, "$", "set", or "unset". */ 113 if ((p = strtok(p, "\n\t ")) == NULL) 114 mtree_err("missing field"); 115 116 if (p[0] == '/') 117 switch(p[1]) { 118 case 's': 119 if (strcmp(p + 1, "set")) 120 break; 121 set(NULL, &ginfo); 122 continue; 123 case 'u': 124 if (strcmp(p + 1, "unset")) 125 break; 126 unset(NULL, &ginfo); 127 continue; 128 } 129 130 if (strchr(p, '/')) 131 mtree_err("slash character in file name"); 132 133 if (!strcmp(p, "..")) { 134 /* Don't go up, if haven't gone down. */ 135 if (!root) 136 goto noparent; 137 if (last->type != F_DIR || last->flags & F_DONE) { 138 if (last == root) 139 goto noparent; 140 last = last->parent; 141 } 142 last->flags |= F_DONE; 143 continue; 144 145 noparent: mtree_err("no parent node"); 146 } 147 148 if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL) 149 mtree_err("%s", strerror(errno)); 150 *centry = ginfo; 151 if (strunvis(centry->name, p) == -1) 152 mtree_err("strunvis failed on %s", p); 153 #define MAGIC "?*[" 154 if (strpbrk(p, MAGIC)) 155 centry->flags |= F_MAGIC; 156 set(NULL, centry); 157 158 if (!root) { 159 last = root = centry; 160 root->parent = root; 161 } else if (last->type == F_DIR && !(last->flags & F_DONE)) { 162 centry->parent = last; 163 last = last->child = centry; 164 } else { 165 centry->parent = last->parent; 166 centry->prev = last; 167 last = last->next = centry; 168 } 169 } 170 return (root); 171 } 172 173 static void 174 set(t, ip) 175 char *t; 176 NODE *ip; 177 { 178 int type; 179 char *kw, *val, *md; 180 struct group *gr; 181 struct passwd *pw; 182 mode_t *m; 183 int value; 184 char *ep; 185 186 val = NULL; 187 for (; (kw = strtok(t, "= \t\n")) != NULL; t = NULL) { 188 ip->flags |= type = parsekey(kw, &value); 189 if (value && (val = strtok(NULL, " \t\n")) == NULL) 190 mtree_err("missing value"); 191 switch(type) { 192 case F_CKSUM: 193 ip->cksum = strtoul(val, &ep, 10); 194 if (*ep) 195 mtree_err("invalid checksum %s", val); 196 break; 197 case F_FLAGS: 198 if (strcmp("none", val) == 0) 199 ip->st_flags = 0; 200 else if (string_to_flags(&val, &ip->st_flags, NULL) != 0) 201 mtree_err("invalid flag %s", val); 202 break; 203 case F_GID: 204 ip->st_gid = (gid_t)strtoul(val, &ep, 10); 205 if (*ep) 206 mtree_err("invalid gid %s", val); 207 break; 208 case F_GNAME: 209 if ((gr = getgrnam(val)) == NULL) 210 mtree_err("unknown group %s", val); 211 ip->st_gid = gr->gr_gid; 212 break; 213 case F_IGN: 214 /* just set flag bit */ 215 break; 216 case F_MD5: 217 if (val[0]=='0' && val[1]=='x') 218 md=&val[2]; 219 else 220 md=val; 221 if ((ip->md5sum = strdup(md)) == NULL) 222 mtree_err("memory allocation error"); 223 break; 224 case F_MODE: 225 if ((m = setmode(val)) == NULL) 226 mtree_err("invalid file mode %s", val); 227 ip->st_mode = getmode(m, 0); 228 free(m); 229 break; 230 case F_NLINK: 231 ip->st_nlink = (nlink_t)strtoul(val, &ep, 10); 232 if (*ep) 233 mtree_err("invalid link count %s", val); 234 break; 235 case F_SIZE: 236 ip->st_size = (off_t)strtoq(val, &ep, 10); 237 if (*ep) 238 mtree_err("invalid size %s", val); 239 break; 240 case F_SLINK: 241 if ((ip->slink = strdup(val)) == NULL) 242 mtree_err("memory allocation error"); 243 break; 244 case F_TIME: 245 #ifndef __APPLE__ 246 ip->st_mtimespec.tv_sec = 247 (time_t)strtoul(val, &ep, 10); 248 #else 249 ip->st_mtimespec.ts_sec = 250 (time_t)strtoul(val, &ep, 10); 251 #endif 252 if (*ep != '.') 253 mtree_err("invalid time %s", val); 254 val = ep + 1; 255 #ifndef __APPLE__ 256 ip->st_mtimespec.tv_nsec = strtol(val, &ep, 10); 257 #else 258 ip->st_mtimespec.ts_nsec = strtol(val, &ep, 10); 259 #endif 260 if (*ep) 261 mtree_err("invalid time %s", 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 mtree_err("unknown file type %s", val); 293 } 294 break; 295 case F_UID: 296 ip->st_uid = (uid_t)strtoul(val, &ep, 10); 297 if (*ep) 298 mtree_err("invalid uid %s", val); 299 break; 300 case F_UNAME: 301 if ((pw = getpwnam(val)) == NULL) 302 mtree_err("unknown user %s", val); 303 ip->st_uid = pw->pw_uid; 304 break; 305 } 306 } 307 } 308 309 static void 310 unset(t, ip) 311 char *t; 312 NODE *ip; 313 { 314 char *p; 315 316 while ((p = strtok(t, "\n\t ")) != NULL) 317 ip->flags &= ~parsekey(p, NULL); 318 } 319