| 1 | /*- |
| 2 | * Copyright (c) 1989 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * %sccs.include.redist.c% |
| 6 | */ |
| 7 | |
| 8 | #ifndef lint |
| 9 | static char sccsid[] = "@(#)spec.c 5.14 (Berkeley) %G%"; |
| 10 | #endif /* not lint */ |
| 11 | |
| 12 | #include <sys/types.h> |
| 13 | #include <pwd.h> |
| 14 | #include <grp.h> |
| 15 | #include <stdio.h> |
| 16 | #include <errno.h> |
| 17 | #include <ctype.h> |
| 18 | #include "mtree.h" |
| 19 | |
| 20 | extern NODE *root; /* root of the tree */ |
| 21 | |
| 22 | static int lineno; /* current spec line number */ |
| 23 | |
| 24 | spec() |
| 25 | { |
| 26 | register NODE *centry, *last; |
| 27 | register char *p; |
| 28 | NODE ginfo, *emalloc(); |
| 29 | char buf[2048]; |
| 30 | |
| 31 | bzero((void *)&ginfo, sizeof(ginfo)); |
| 32 | for (lineno = 1; fgets(buf, sizeof(buf), stdin); ++lineno) { |
| 33 | if (!(p = index(buf, '\n'))) { |
| 34 | (void)fprintf(stderr, |
| 35 | "mtree: line %d too long.\n", lineno); |
| 36 | exit(1); |
| 37 | } |
| 38 | *p = '\0'; |
| 39 | for (p = buf; *p && isspace(*p); ++p); |
| 40 | if (!*p || *p == '#') |
| 41 | continue; |
| 42 | |
| 43 | /* grab file name, "$", "set", or "unset" */ |
| 44 | if (!(p = strtok(p, "\n\t "))) |
| 45 | specerr(); |
| 46 | |
| 47 | if (p[0] == '/') |
| 48 | switch(p[1]) { |
| 49 | case 's': |
| 50 | if (strcmp(p + 1, "set")) |
| 51 | break; |
| 52 | set(&ginfo); |
| 53 | continue; |
| 54 | case 'u': |
| 55 | if (strcmp(p + 1, "unset")) |
| 56 | break; |
| 57 | unset(&ginfo); |
| 58 | continue; |
| 59 | } |
| 60 | |
| 61 | if (index(p, '/')) { |
| 62 | (void)fprintf(stderr, |
| 63 | "mtree: file names may not contain slashes.\n"); |
| 64 | specerr(); |
| 65 | } |
| 66 | |
| 67 | if (!strcmp(p, "..")) { |
| 68 | /* don't go up, if haven't gone down */ |
| 69 | if (!root) |
| 70 | noparent(); |
| 71 | if (last->type != F_DIR || last->flags & F_DONE) { |
| 72 | if (last == root) |
| 73 | noparent(); |
| 74 | last = last->parent; |
| 75 | } |
| 76 | last->flags |= F_DONE; |
| 77 | continue; |
| 78 | } |
| 79 | |
| 80 | centry = emalloc(sizeof(NODE) + strlen(p)); |
| 81 | *centry = ginfo; |
| 82 | (void)strcpy(centry->name, p); |
| 83 | #define MAGIC "?*[" |
| 84 | if (strpbrk(p, MAGIC)) |
| 85 | centry->flags |= F_MAGIC; |
| 86 | set(centry); |
| 87 | |
| 88 | if (!root) { |
| 89 | last = root = centry; |
| 90 | root->parent = root; |
| 91 | } else if (last->type == F_DIR && !(last->flags & F_DONE)) { |
| 92 | centry->parent = last; |
| 93 | last = last->child = centry; |
| 94 | } else { |
| 95 | centry->parent = last->parent; |
| 96 | centry->prev = last; |
| 97 | last = last->next = centry; |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | set(ip) |
| 103 | register NODE *ip; |
| 104 | { |
| 105 | register int type; |
| 106 | register char *kw, *val; |
| 107 | gid_t getgroup(); |
| 108 | uid_t getowner(); |
| 109 | long atol(), strtol(); |
| 110 | |
| 111 | while (kw = strtok((char *)NULL, "= \t\n")) { |
| 112 | ip->flags |= type = key(kw); |
| 113 | val = strtok((char *)NULL, " \t\n"); |
| 114 | if (!val) |
| 115 | specerr(); |
| 116 | switch(type) { |
| 117 | case F_CKSUM: |
| 118 | ip->cksum = atol(val); |
| 119 | break; |
| 120 | case F_GROUP: |
| 121 | ip->st_gid = getgroup(val); |
| 122 | break; |
| 123 | case F_IGN: |
| 124 | /* just set flag bit */ |
| 125 | break; |
| 126 | case F_MODE: { |
| 127 | mode_t *m, *setmode(); |
| 128 | |
| 129 | if (!(m = setmode(val))) { |
| 130 | (void)fprintf(stderr, |
| 131 | "mtree: invalid file mode %s.\n", val); |
| 132 | specerr(); |
| 133 | } |
| 134 | ip->st_mode = getmode(m, 0); |
| 135 | break; |
| 136 | } |
| 137 | case F_NLINK: |
| 138 | ip->st_nlink = atoi(val); |
| 139 | break; |
| 140 | case F_OWNER: |
| 141 | ip->st_uid = getowner(val); |
| 142 | break; |
| 143 | case F_SIZE: |
| 144 | ip->st_size = atol(val); |
| 145 | break; |
| 146 | case F_SLINK: |
| 147 | if (!(ip->slink = strdup(val))) |
| 148 | nomem(); |
| 149 | break; |
| 150 | case F_TIME: |
| 151 | ip->st_mtime = atol(val); |
| 152 | break; |
| 153 | case F_TYPE: |
| 154 | switch(*val) { |
| 155 | case 'b': |
| 156 | if (!strcmp(val, "block")) |
| 157 | ip->type = F_BLOCK; |
| 158 | break; |
| 159 | case 'c': |
| 160 | if (!strcmp(val, "char")) |
| 161 | ip->type = F_CHAR; |
| 162 | break; |
| 163 | case 'd': |
| 164 | if (!strcmp(val, "dir")) |
| 165 | ip->type = F_DIR; |
| 166 | break; |
| 167 | case 'f': |
| 168 | if (!strcmp(val, "file")) |
| 169 | ip->type = F_FILE; |
| 170 | if (!strcmp(val, "fifo")) |
| 171 | ip->type = F_FIFO; |
| 172 | break; |
| 173 | case 'l': |
| 174 | if (!strcmp(val, "link")) |
| 175 | ip->type = F_LINK; |
| 176 | break; |
| 177 | case 's': |
| 178 | if (!strcmp(val, "socket")) |
| 179 | ip->type = F_SOCK; |
| 180 | break; |
| 181 | default: |
| 182 | (void)fprintf(stderr, |
| 183 | "mtree: unknown file type %s.\n", val); |
| 184 | specerr(); |
| 185 | } |
| 186 | break; |
| 187 | } |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | unset(ip) |
| 192 | register NODE *ip; |
| 193 | { |
| 194 | register char *p; |
| 195 | |
| 196 | while (p = strtok((char *)NULL, "\n\t ")) |
| 197 | ip->flags &= ~key(p); |
| 198 | } |
| 199 | |
| 200 | key(p) |
| 201 | char *p; |
| 202 | { |
| 203 | switch(*p) { |
| 204 | case 'c': |
| 205 | if (!strcmp(p, "cksum")) |
| 206 | return(F_CKSUM); |
| 207 | break; |
| 208 | case 'g': |
| 209 | if (!strcmp(p, "group")) |
| 210 | return(F_GROUP); |
| 211 | break; |
| 212 | case 'i': |
| 213 | if (!strcmp(p, "ignore")) |
| 214 | return(F_IGN); |
| 215 | break; |
| 216 | case 'l': |
| 217 | if (!strcmp(p, "link")) |
| 218 | return(F_SLINK); |
| 219 | break; |
| 220 | case 'm': |
| 221 | if (!strcmp(p, "mode")) |
| 222 | return(F_MODE); |
| 223 | break; |
| 224 | case 'n': |
| 225 | if (!strcmp(p, "nlink")) |
| 226 | return(F_NLINK); |
| 227 | break; |
| 228 | case 'o': |
| 229 | if (!strcmp(p, "owner")) |
| 230 | return(F_OWNER); |
| 231 | break; |
| 232 | case 's': |
| 233 | if (!strcmp(p, "size")) |
| 234 | return(F_SIZE); |
| 235 | break; |
| 236 | case 't': |
| 237 | if (!strcmp(p, "type")) |
| 238 | return(F_TYPE); |
| 239 | if (!strcmp(p, "time")) |
| 240 | return(F_TIME); |
| 241 | break; |
| 242 | } |
| 243 | (void)fprintf(stderr, "mtree: unknown keyword %s.\n", p); |
| 244 | specerr(); |
| 245 | /* NOTREACHED */ |
| 246 | } |
| 247 | |
| 248 | |
| 249 | uid_t |
| 250 | getowner(p) |
| 251 | register char *p; |
| 252 | { |
| 253 | struct passwd *pw; |
| 254 | int val; |
| 255 | |
| 256 | if (isdigit(*p)) { |
| 257 | if ((val = atoi(p)) >= 0) |
| 258 | return((uid_t)val); |
| 259 | (void)fprintf(stderr, "mtree: illegal uid value %s.\n", p); |
| 260 | } else if (pw = getpwnam(p)) |
| 261 | return(pw->pw_uid); |
| 262 | else |
| 263 | (void)fprintf(stderr, "mtree: unknown user %s.\n", p); |
| 264 | specerr(); |
| 265 | /* NOTREACHED */ |
| 266 | } |
| 267 | |
| 268 | gid_t |
| 269 | getgroup(p) |
| 270 | register char *p; |
| 271 | { |
| 272 | struct group *gr; |
| 273 | int val; |
| 274 | |
| 275 | if (isdigit(*p)) { |
| 276 | if ((val = atoi(p)) >= 0) |
| 277 | return((gid_t)val); |
| 278 | (void)fprintf(stderr, "mtree: illegal gid value %s.\n", p); |
| 279 | } else if (gr = getgrnam(p)) |
| 280 | return(gr->gr_gid); |
| 281 | else |
| 282 | (void)fprintf(stderr, "mtree: unknown group %s.\n", p); |
| 283 | specerr(); |
| 284 | /* NOTREACHED */ |
| 285 | } |
| 286 | |
| 287 | noparent() |
| 288 | { |
| 289 | (void)fprintf(stderr, "mtree: no parent node.\n"); |
| 290 | specerr(); |
| 291 | } |
| 292 | |
| 293 | specerr() |
| 294 | { |
| 295 | (void)fprintf(stderr, |
| 296 | "mtree: line %d of the specification is incorrect.\n", lineno); |
| 297 | exit(1); |
| 298 | } |
| 299 | |
| 300 | NODE * |
| 301 | emalloc(size) |
| 302 | int size; |
| 303 | { |
| 304 | void *p; |
| 305 | |
| 306 | /* NOSTRICT */ |
| 307 | if (!(p = malloc((u_int)size))) |
| 308 | nomem(); |
| 309 | bzero(p, size); |
| 310 | return((NODE *)p); |
| 311 | } |
| 312 | |
| 313 | nomem() |
| 314 | { |
| 315 | (void)fprintf(stderr, "mtree: %s.\n", strerror(ENOMEM)); |
| 316 | exit(1); |
| 317 | } |