spec.c revision 6286
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 35static 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 50int lineno; /* Current spec line number. */ 51 52static void set __P((char *, NODE *)); 53static void unset __P((char *, NODE *)); 54 55NODE * 56spec() 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 centry = last = 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 134noparent: 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 161static void 162set(t, ip) 163 char *t; 164 register NODE *ip; 165{ 166 register int type; 167 register char *kw, *val = NULL; 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_MD5: 185 ip->md5digest = strdup(val); 186 if(!ip->md5digest) { 187 err("%s", strerror(errno)); 188 } 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 = strtoul(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 277static void 278unset(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