Add PCICAP_{ID,NEXTPTR} to avoid using magic number
[dragonfly.git] / usr.sbin / mtree / spec.c
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  * @(#)spec.c   8.1 (Berkeley) 6/6/93
34  * $FreeBSD: src/usr.sbin/mtree/spec.c,v 1.13.2.1 2000/06/28 02:33:17 joe Exp $
35  * $DragonFly: src/usr.sbin/mtree/spec.c,v 1.6 2004/08/30 19:27:22 eirikn Exp $
36  */
37
38 #include <sys/types.h>
39 #include <sys/stat.h>
40 #include <ctype.h>
41 #include <err.h>
42 #include <errno.h>
43 #include <fts.h>
44 #include <grp.h>
45 #include <pwd.h>
46 #include <stdio.h>
47 #include <unistd.h>
48 #include <vis.h>
49 #include "mtree.h"
50 #include "extern.h"
51
52 int lineno;                             /* Current spec line number. */
53
54 static void      set(char *, NODE *);
55 static void      unset(char *, NODE *);
56
57 NODE *
58 spec(void)
59 {
60         NODE *centry, *last;
61         char *p;
62         NODE ginfo, *root;
63         int c_cur, c_next;
64         char buf[2048];
65
66         centry = last = root = NULL;
67         bzero(&ginfo, sizeof(ginfo));
68         c_cur = c_next = 0;
69         for (lineno = 1; fgets(buf, sizeof(buf), stdin);
70             ++lineno, c_cur = c_next, c_next = 0) {
71                 /* Skip empty lines. */
72                 if (buf[0] == '\n')
73                         continue;
74
75                 /* Find end of line. */
76                 if ((p = strchr(buf, '\n')) == NULL)
77                         errx(1, "line %d too long", lineno);
78
79                 /* See if next line is continuation line. */
80                 if (p[-1] == '\\') {
81                         --p;
82                         c_next = 1;
83                 }
84
85                 /* Null-terminate the line. */
86                 *p = '\0';
87
88                 /* Skip leading whitespace. */
89                 for (p = buf; *p && isspace(*p); ++p);
90
91                 /* If nothing but whitespace or comment char, continue. */
92                 if (!*p || *p == '#')
93                         continue;
94
95 #ifdef DEBUG
96                 fprintf(stderr, "line %d: {%s}\n", lineno, p);
97 #endif
98                 if (c_cur) {
99                         set(p, centry);
100                         continue;
101                 }
102
103                 /* Grab file name, "$", "set", or "unset". */
104                 if ((p = strtok(p, "\n\t ")) == NULL)
105                         errx(1, "line %d: missing field", lineno);
106
107                 if (p[0] == '/')
108                         switch(p[1]) {
109                         case 's':
110                                 if (strcmp(p + 1, "set"))
111                                         break;
112                                 set(NULL, &ginfo);
113                                 continue;
114                         case 'u':
115                                 if (strcmp(p + 1, "unset"))
116                                         break;
117                                 unset(NULL, &ginfo);
118                                 continue;
119                         }
120
121                 if (strchr(p, '/'))
122                         errx(1, "line %d: slash character in file name",
123                         lineno);
124
125                 if (!strcmp(p, "..")) {
126                         /* Don't go up, if haven't gone down. */
127                         if (!root)
128                                 goto noparent;
129                         if (last->type != F_DIR || last->flags & F_DONE) {
130                                 if (last == root)
131                                         goto noparent;
132                                 last = last->parent;
133                         }
134                         last->flags |= F_DONE;
135                         continue;
136
137 noparent:               errx(1, "line %d: no parent node", lineno);
138                 }
139
140                 if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL)
141                         errx(1, "calloc");
142                 *centry = ginfo;
143 #define MAGIC   "?*["
144                 if (strpbrk(p, MAGIC))
145                         centry->flags |= F_MAGIC;
146                 if (strunvis(centry->name, p) == -1) {
147                         warnx("filename %s is ill-encoded and literally used",
148                             p);
149                         strcpy(centry->name, p);
150                 }
151                 set(NULL, centry);
152
153                 if (!root) {
154                         last = root = centry;
155                         root->parent = root;
156                 } else if (last->type == F_DIR && !(last->flags & F_DONE)) {
157                         centry->parent = last;
158                         last = last->child = centry;
159                 } else {
160                         centry->parent = last->parent;
161                         centry->prev = last;
162                         last = last->next = centry;
163                 }
164         }
165         return (root);
166 }
167
168 static void
169 set(char *t, NODE *ip)
170 {
171         int type;
172         char *kw, *val = NULL;
173         struct group *gr;
174         struct passwd *pw;
175         mode_t *m;
176         int value;
177         char *ep;
178
179         for (; (kw = strtok(t, "= \t\n")); t = NULL) {
180                 ip->flags |= type = parsekey(kw, &value);
181                 if (value && (val = strtok(NULL, " \t\n")) == NULL)
182                         errx(1, "line %d: missing value", lineno);
183                 switch(type) {
184                 case F_CKSUM:
185                         ip->cksum = strtoul(val, &ep, 10);
186                         if (*ep)
187                                 errx(1, "line %d: invalid checksum %s",
188                                 lineno, val);
189                         break;
190                 case F_MD5:
191                         ip->md5digest = strdup(val);
192                         if(!ip->md5digest) {
193                                 errx(1, "strdup");
194                         }
195                         break;
196                 case F_SHA1:
197                         ip->sha1digest = strdup(val);
198                         if(!ip->sha1digest) {
199                                 errx(1, "strdup");
200                         }
201                         break;
202                 case F_RMD160:
203                         ip->rmd160digest = strdup(val);
204                         if(!ip->rmd160digest) {
205                                 errx(1, "strdup");
206                         }
207                         break;
208                 case F_FLAGS:
209                         if (strcmp("none", val) == 0)
210                                 ip->st_flags = 0;
211                         else if (strtofflags(&val, &ip->st_flags, NULL) != 0)
212                                 errx(1, "line %d: invalid flag %s",lineno, val);
213                         break;
214                 case F_GID:
215                         ip->st_gid = strtoul(val, &ep, 10);
216                         if (*ep)
217                                 errx(1, "line %d: invalid gid %s", lineno, val);
218                         break;
219                 case F_GNAME:
220                         if ((gr = getgrnam(val)) == NULL)
221                             errx(1, "line %d: unknown group %s", lineno, val);
222                         ip->st_gid = gr->gr_gid;
223                         break;
224                 case F_IGN:
225                         /* just set flag bit */
226                         break;
227                 case F_MODE:
228                         if ((m = setmode(val)) == NULL)
229                                 errx(1, "line %d: invalid file mode %s",
230                                 lineno, val);
231                         ip->st_mode = getmode(m, 0);
232                         free(m);
233                         break;
234                 case F_NLINK:
235                         ip->st_nlink = strtoul(val, &ep, 10);
236                         if (*ep)
237                                 errx(1, "line %d: invalid link count %s",
238                                 lineno,  val);
239                         break;
240                 case F_SIZE:
241                         ip->st_size = strtoq(val, &ep, 10);
242                         if (*ep)
243                                 errx(1, "line %d: invalid size %s",
244                                 lineno, val);
245                         break;
246                 case F_SLINK:
247                         if ((ip->slink = strdup(val)) == NULL)
248                                 errx(1, "strdup");
249                         break;
250                 case F_TIME:
251                         ip->st_mtimespec.tv_sec = strtoul(val, &ep, 10);
252                         if (*ep != '.')
253                                 errx(1, "line %d: invalid time %s",
254                                 lineno, val);
255                         val = ep + 1;
256                         ip->st_mtimespec.tv_nsec = strtoul(val, &ep, 10);
257                         if (*ep)
258                                 errx(1, "line %d: invalid time %s",
259                                 lineno, val);
260                         break;
261                 case F_TYPE:
262                         switch(*val) {
263                         case 'b':
264                                 if (!strcmp(val, "block"))
265                                         ip->type = F_BLOCK;
266                                 break;
267                         case 'c':
268                                 if (!strcmp(val, "char"))
269                                         ip->type = F_CHAR;
270                                 break;
271                         case 'd':
272                                 if (!strcmp(val, "dir"))
273                                         ip->type = F_DIR;
274                                 break;
275                         case 'f':
276                                 if (!strcmp(val, "file"))
277                                         ip->type = F_FILE;
278                                 if (!strcmp(val, "fifo"))
279                                         ip->type = F_FIFO;
280                                 break;
281                         case 'l':
282                                 if (!strcmp(val, "link"))
283                                         ip->type = F_LINK;
284                                 break;
285                         case 's':
286                                 if (!strcmp(val, "socket"))
287                                         ip->type = F_SOCK;
288                                 break;
289                         default:
290                                 errx(1, "line %d: unknown file type %s",
291                                 lineno, val);
292                         }
293                         break;
294                 case F_UID:
295                         ip->st_uid = strtoul(val, &ep, 10);
296                         if (*ep)
297                                 errx(1, "line %d: invalid uid %s", lineno, val);
298                         break;
299                 case F_UNAME:
300                         if ((pw = getpwnam(val)) == NULL)
301                             errx(1, "line %d: unknown user %s", lineno, val);
302                         ip->st_uid = pw->pw_uid;
303                         break;
304                 }
305         }
306 }
307
308 static void
309 unset(char *t, NODE *ip)
310 {
311         char *p;
312
313         while ((p = strtok(t, "\n\t ")))
314                 ip->flags &= ~parsekey(p, NULL);
315 }