1 /* $NetBSD: spec.c,v 1.6 1995/03/07 21:12:12 cgd 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 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)spec.c 8.1 (Berkeley) 6/6/93"; 39 #else 40 static char rcsid[] = "$NetBSD: spec.c,v 1.6 1995/03/07 21:12:12 cgd Exp $"; 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 #include <fts.h> 47 #include <pwd.h> 48 #include <grp.h> 49 #include <errno.h> 50 #include <unistd.h> 51 #include <stdio.h> 52 #include <ctype.h> 53 #include "mtree.h" 54 #include "extern.h" 55 56 int lineno; /* Current spec line number. */ 57 58 static void set __P((char *, NODE *)); 59 static void unset __P((char *, NODE *)); 60 61 NODE * 62 spec() 63 { 64 register NODE *centry, *last; 65 register char *p; 66 NODE ginfo, *root; 67 int c_cur, c_next; 68 char buf[2048]; 69 70 root = NULL; 71 bzero(&ginfo, sizeof(ginfo)); 72 c_cur = c_next = 0; 73 for (lineno = 1; fgets(buf, sizeof(buf), stdin); 74 ++lineno, c_cur = c_next, c_next = 0) { 75 /* Skip empty lines. */ 76 if (buf[0] == '\n') 77 continue; 78 79 /* Find end of line. */ 80 if ((p = index(buf, '\n')) == NULL) 81 err("line %d too long", lineno); 82 83 /* See if next line is continuation line. */ 84 if (p[-1] == '\\') { 85 --p; 86 c_next = 1; 87 } 88 89 /* Null-terminate the line. */ 90 *p = '\0'; 91 92 /* Skip leading whitespace. */ 93 for (p = buf; *p && isspace(*p); ++p); 94 95 /* If nothing but whitespace or comment char, continue. */ 96 if (!*p || *p == '#') 97 continue; 98 99 #ifdef DEBUG 100 (void)fprintf(stderr, "line %d: {%s}\n", lineno, p); 101 #endif 102 if (c_cur) { 103 set(p, centry); 104 continue; 105 } 106 107 /* Grab file name, "$", "set", or "unset". */ 108 if ((p = strtok(p, "\n\t ")) == NULL) 109 err("missing field"); 110 111 if (p[0] == '/') 112 switch(p[1]) { 113 case 's': 114 if (strcmp(p + 1, "set")) 115 break; 116 set(NULL, &ginfo); 117 continue; 118 case 'u': 119 if (strcmp(p + 1, "unset")) 120 break; 121 unset(NULL, &ginfo); 122 continue; 123 } 124 125 if (index(p, '/')) 126 err("slash character in file name"); 127 128 if (!strcmp(p, "..")) { 129 /* Don't go up, if haven't gone down. */ 130 if (!root) 131 goto noparent; 132 if (last->type != F_DIR || last->flags & F_DONE) { 133 if (last == root) 134 goto noparent; 135 last = last->parent; 136 } 137 last->flags |= F_DONE; 138 continue; 139 140 noparent: err("no parent node"); 141 } 142 143 if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL) 144 err("%s", strerror(errno)); 145 *centry = ginfo; 146 (void)strcpy(centry->name, p); 147 #define MAGIC "?*[" 148 if (strpbrk(p, MAGIC)) 149 centry->flags |= F_MAGIC; 150 set(NULL, centry); 151 152 if (!root) { 153 last = root = centry; 154 root->parent = root; 155 } else if (last->type == F_DIR && !(last->flags & F_DONE)) { 156 centry->parent = last; 157 last = last->child = centry; 158 } else { 159 centry->parent = last->parent; 160 centry->prev = last; 161 last = last->next = centry; 162 } 163 } 164 return (root); 165 } 166 167 static void 168 set(t, ip) 169 char *t; 170 register NODE *ip; 171 { 172 register int type; 173 register char *kw, *val; 174 struct group *gr; 175 struct passwd *pw; 176 mode_t *m; 177 int value; 178 char *ep; 179 180 for (; kw = strtok(t, "= \t\n"); t = NULL) { 181 ip->flags |= type = parsekey(kw, &value); 182 if (value && (val = strtok(NULL, " \t\n")) == NULL) 183 err("missing value"); 184 switch(type) { 185 case F_CKSUM: 186 ip->cksum = strtoul(val, &ep, 10); 187 if (*ep) 188 err("invalid checksum %s", val); 189 break; 190 case F_GID: 191 ip->st_gid = strtoul(val, &ep, 10); 192 if (*ep) 193 err("invalid gid %s", val); 194 break; 195 case F_GNAME: 196 if ((gr = getgrnam(val)) == NULL) 197 err("unknown group %s", val); 198 ip->st_gid = gr->gr_gid; 199 break; 200 case F_IGN: 201 /* just set flag bit */ 202 break; 203 case F_MODE: 204 if ((m = setmode(val)) == NULL) 205 err("invalid file mode %s", val); 206 ip->st_mode = getmode(m, 0); 207 break; 208 case F_NLINK: 209 ip->st_nlink = strtoul(val, &ep, 10); 210 if (*ep) 211 err("invalid link count %s", val); 212 break; 213 case F_SIZE: 214 ip->st_size = strtouq(val, &ep, 10); 215 if (*ep) 216 err("invalid size %s", val); 217 break; 218 case F_SLINK: 219 if ((ip->slink = strdup(val)) == NULL) 220 err("%s", strerror(errno)); 221 break; 222 case F_TIME: 223 ip->st_mtimespec.ts_sec = strtoul(val, &ep, 10); 224 if (*ep != '.') 225 err("invalid time %s", val); 226 val = ep + 1; 227 ip->st_mtimespec.ts_nsec = strtoul(val, &ep, 10); 228 if (*ep) 229 err("invalid time %s", val); 230 break; 231 case F_TYPE: 232 switch(*val) { 233 case 'b': 234 if (!strcmp(val, "block")) 235 ip->type = F_BLOCK; 236 break; 237 case 'c': 238 if (!strcmp(val, "char")) 239 ip->type = F_CHAR; 240 break; 241 case 'd': 242 if (!strcmp(val, "dir")) 243 ip->type = F_DIR; 244 break; 245 case 'f': 246 if (!strcmp(val, "file")) 247 ip->type = F_FILE; 248 if (!strcmp(val, "fifo")) 249 ip->type = F_FIFO; 250 break; 251 case 'l': 252 if (!strcmp(val, "link")) 253 ip->type = F_LINK; 254 break; 255 case 's': 256 if (!strcmp(val, "socket")) 257 ip->type = F_SOCK; 258 break; 259 default: 260 err("unknown file type %s", val); 261 } 262 break; 263 case F_UID: 264 ip->st_uid = strtoul(val, &ep, 10); 265 if (*ep) 266 err("invalid uid %s", val); 267 break; 268 case F_UNAME: 269 if ((pw = getpwnam(val)) == NULL) 270 err("unknown user %s", val); 271 ip->st_uid = pw->pw_uid; 272 break; 273 } 274 } 275 } 276 277 static void 278 unset(t, ip) 279 char *t; 280 register NODE *ip; 281 { 282 register char *p; 283 284 while (p = strtok(t, "\n\t ")) 285 ip->flags &= ~parsekey(p, NULL); 286 } 287