spec.c revision 1.5
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 34 #ifndef lint 35 static char sccsid[] = "@(#)spec.c 8.1 (Berkeley) 6/6/93"; 36 #endif /* not lint */ 37 38 #include <sys/types.h> 39 #include <sys/stat.h> 40 #include <fts.h> 41 #include <pwd.h> 42 #include <grp.h> 43 #include <errno.h> 44 #include <unistd.h> 45 #include <stdio.h> 46 #include <ctype.h> 47 #include "mtree.h" 48 #include "extern.h" 49 50 int lineno; /* Current spec line number. */ 51 52 static void set __P((char *, NODE *)); 53 static void unset __P((char *, NODE *)); 54 55 NODE * 56 spec() 57 { 58 register NODE *centry, *last; 59 register char *p; 60 NODE ginfo, *root; 61 int c_cur, c_next; 62 char buf[2048]; 63 64 root = NULL; 65 bzero(&ginfo, sizeof(ginfo)); 66 c_cur = c_next = 0; 67 for (lineno = 1; fgets(buf, sizeof(buf), stdin); 68 ++lineno, c_cur = c_next, c_next = 0) { 69 /* Skip empty lines. */ 70 if (buf[0] == '\n') 71 continue; 72 73 /* Find end of line. */ 74 if ((p = index(buf, '\n')) == NULL) 75 err("line %d too long", lineno); 76 77 /* See if next line is continuation line. */ 78 if (p[-1] == '\\') { 79 --p; 80 c_next = 1; 81 } 82 83 /* Null-terminate the line. */ 84 *p = '\0'; 85 86 /* Skip leading whitespace. */ 87 for (p = buf; *p && isspace(*p); ++p); 88 89 /* If nothing but whitespace or comment char, continue. */ 90 if (!*p || *p == '#') 91 continue; 92 93 #ifdef DEBUG 94 (void)fprintf(stderr, "line %d: {%s}\n", lineno, p); 95 #endif 96 if (c_cur) { 97 set(p, centry); 98 continue; 99 } 100 101 /* Grab file name, "$", "set", or "unset". */ 102 if ((p = strtok(p, "\n\t ")) == NULL) 103 err("missing field"); 104 105 if (p[0] == '/') 106 switch(p[1]) { 107 case 's': 108 if (strcmp(p + 1, "set")) 109 break; 110 set(NULL, &ginfo); 111 continue; 112 case 'u': 113 if (strcmp(p + 1, "unset")) 114 break; 115 unset(NULL, &ginfo); 116 continue; 117 } 118 119 if (index(p, '/')) 120 err("slash character in file name"); 121 122 if (!strcmp(p, "..")) { 123 /* Don't go up, if haven't gone down. */ 124 if (!root) 125 goto noparent; 126 if (last->type != F_DIR || last->flags & F_DONE) { 127 if (last == root) 128 goto noparent; 129 last = last->parent; 130 } 131 last->flags |= F_DONE; 132 continue; 133 134 noparent: err("no parent node"); 135 } 136 137 if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL) 138 err("%s", strerror(errno)); 139 *centry = ginfo; 140 (void)strcpy(centry->name, p); 141 #define MAGIC "?*[" 142 if (strpbrk(p, MAGIC)) 143 centry->flags |= F_MAGIC; 144 set(NULL, centry); 145 146 if (!root) { 147 last = root = centry; 148 root->parent = root; 149 } else if (last->type == F_DIR && !(last->flags & F_DONE)) { 150 centry->parent = last; 151 last = last->child = centry; 152 } else { 153 centry->parent = last->parent; 154 centry->prev = last; 155 last = last->next = centry; 156 } 157 } 158 return (root); 159 } 160 161 static void 162 set(t, ip) 163 char *t; 164 register NODE *ip; 165 { 166 register int type; 167 register char *kw, *val; 168 struct group *gr; 169 struct passwd *pw; 170 mode_t *m; 171 int value; 172 char *ep; 173 174 for (; kw = strtok(t, "= \t\n"); t = NULL) { 175 ip->flags |= type = parsekey(kw, &value); 176 if (value && (val = strtok(NULL, " \t\n")) == NULL) 177 err("missing value"); 178 switch(type) { 179 case F_CKSUM: 180 ip->cksum = strtoul(val, &ep, 10); 181 if (*ep) 182 err("invalid checksum %s", val); 183 break; 184 case F_GID: 185 ip->st_gid = strtoul(val, &ep, 10); 186 if (*ep) 187 err("invalid gid %s", val); 188 break; 189 case F_GNAME: 190 if ((gr = getgrnam(val)) == NULL) 191 err("unknown group %s", val); 192 ip->st_gid = gr->gr_gid; 193 break; 194 case F_IGN: 195 /* just set flag bit */ 196 break; 197 case F_MODE: 198 if ((m = setmode(val)) == NULL) 199 err("invalid file mode %s", val); 200 ip->st_mode = getmode(m, 0); 201 break; 202 case F_NLINK: 203 ip->st_nlink = strtoul(val, &ep, 10); 204 if (*ep) 205 err("invalid link count %s", val); 206 break; 207 case F_SIZE: 208 ip->st_size = strtouq(val, &ep, 10); 209 if (*ep) 210 err("invalid size %s", val); 211 break; 212 case F_SLINK: 213 if ((ip->slink = strdup(val)) == NULL) 214 err("%s", strerror(errno)); 215 break; 216 case F_TIME: 217 ip->st_mtimespec.ts_sec = strtoul(val, &ep, 10); 218 if (*ep != '.') 219 err("invalid time %s", val); 220 val = ep + 1; 221 ip->st_mtimespec.ts_nsec = strtoul(val, &ep, 10); 222 if (*ep) 223 err("invalid time %s", val); 224 break; 225 case F_TYPE: 226 switch(*val) { 227 case 'b': 228 if (!strcmp(val, "block")) 229 ip->type = F_BLOCK; 230 break; 231 case 'c': 232 if (!strcmp(val, "char")) 233 ip->type = F_CHAR; 234 break; 235 case 'd': 236 if (!strcmp(val, "dir")) 237 ip->type = F_DIR; 238 break; 239 case 'f': 240 if (!strcmp(val, "file")) 241 ip->type = F_FILE; 242 if (!strcmp(val, "fifo")) 243 ip->type = F_FIFO; 244 break; 245 case 'l': 246 if (!strcmp(val, "link")) 247 ip->type = F_LINK; 248 break; 249 case 's': 250 if (!strcmp(val, "socket")) 251 ip->type = F_SOCK; 252 break; 253 default: 254 err("unknown file type %s", val); 255 } 256 break; 257 case F_UID: 258 ip->st_uid = strtoul(val, &ep, 10); 259 if (*ep) 260 err("invalid uid %s", val); 261 break; 262 case F_UNAME: 263 if ((pw = getpwnam(val)) == NULL) 264 err("unknown user %s", val); 265 ip->st_uid = pw->pw_uid; 266 break; 267 } 268 } 269 } 270 271 static void 272 unset(t, ip) 273 char *t; 274 register NODE *ip; 275 { 276 register char *p; 277 278 while (p = strtok(t, "\n\t ")) 279 ip->flags &= ~parsekey(p, NULL); 280 } 281
Indexes created Sun Sep 21 19:09:51 GMT 2025