[unix-history] / usr.sbin / mtree / spec.c

/*-
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)spec.c	5.17 (Berkeley) 4/17/92";
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <fts.h>
#include <pwd.h>
#include <grp.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include "mtree.h"
#include "extern.h"

int lineno;				/* Current spec line number. */

static void	 set __P((char *, NODE *));
static void	 unset __P((char *, NODE *));

NODE *
spec()
{
	register NODE *centry, *last;
	register char *p;
	NODE ginfo, *root;
	int c_cur, c_next;
	char buf[2048];

	root = NULL;
	bzero(&ginfo, sizeof(ginfo));
	c_cur = c_next = 0;
	for (lineno = 1; fgets(buf, sizeof(buf), stdin);
	    ++lineno, c_cur = c_next, c_next = 0) {
		/* Skip empty lines. */
		if (buf[0] == '\n')
			continue;

		/* Find end of line. */
		if ((p = index(buf, '\n')) == NULL)
			err("line %d too long", lineno);

		/* See if next line is continuation line. */
		if (p[-1] == '\\') {
			--p;
			c_next = 1;
		}

		/* Null-terminate the line. */
		*p = '\0';

		/* Skip leading whitespace. */
		for (p = buf; *p && isspace(*p); ++p);

		/* If nothing but whitespace or comment char, continue. */
		if (!*p || *p == '#')
			continue;

#ifdef DEBUG
		(void)fprintf(stderr, "line %d: {%s}\n", lineno, p);
#endif
		if (c_cur) {
			set(p, centry);
			continue;
		}
			
		/* Grab file name, "$", "set", or "unset". */
		if ((p = strtok(p, "\n\t ")) == NULL)
			err("missing field");

		if (p[0] == '/')
			switch(p[1]) {
			case 's':
				if (strcmp(p + 1, "set"))
					break;
				set(NULL, &ginfo);
				continue;
			case 'u':
				if (strcmp(p + 1, "unset"))
					break;
				unset(NULL, &ginfo);
				continue;
			}

		if (index(p, '/'))
			err("slash character in file name");

		if (!strcmp(p, "..")) {
			/* Don't go up, if haven't gone down. */
			if (!root)
				goto noparent;
			if (last->type != F_DIR || last->flags & F_DONE) {
				if (last == root)
					goto noparent;
				last = last->parent;
			}
			last->flags |= F_DONE;
			continue;

noparent:		err("no parent node");
		}

		if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL)
			err("%s", strerror(errno));
		*centry = ginfo;
		(void)strcpy(centry->name, p);
#define	MAGIC	"?*["
		if (strpbrk(p, MAGIC))
			centry->flags |= F_MAGIC;
		set(NULL, centry);

		if (!root) {
			last = root = centry;
			root->parent = root;
		} else if (last->type == F_DIR && !(last->flags & F_DONE)) {
			centry->parent = last;
			last = last->child = centry;
		} else {
			centry->parent = last->parent;
			centry->prev = last;
			last = last->next = centry;
		}
	}
	return (root);
}

static void
set(t, ip)
	char *t;
	register NODE *ip;
{
	register int type;
	register char *kw, *val;
	struct group *gr;
	struct passwd *pw;
	mode_t *m;
	int value;
	char *ep;

	for (; kw = strtok(t, "= \t\n"); t = NULL) {
		ip->flags |= type = parsekey(kw, &value);
		if (value && (val = strtok(NULL, " \t\n")) == NULL)
			err("missing value");
		switch(type) {
		case F_CKSUM:
			ip->cksum = strtoul(val, &ep, 10);
			if (*ep)
				err("invalid checksum %s", val);
			break;
		case F_GID:
			ip->st_gid = strtoul(val, &ep, 10);
			if (*ep)
				err("invalid gid %s", val);
			break;
		case F_GNAME:
			if ((gr = getgrnam(val)) == NULL)
			    err("unknown group %s", val);
			ip->st_gid = gr->gr_gid;
			break;
		case F_IGN:
			/* just set flag bit */
			break;
		case F_MODE:
			if ((m = setmode(val)) == NULL)
				err("invalid file mode %s", val);
			ip->st_mode = getmode(m, 0);
			break;
		case F_NLINK:
			ip->st_nlink = strtoul(val, &ep, 10);
			if (*ep)
				err("invalid link count %s", val);
			break;
		case F_SIZE:
			ip->st_size = strtoul(val, &ep, 10);
			if (*ep)
				err("invalid size %s", val);
			break;
		case F_SLINK:
			if ((ip->slink = strdup(val)) == NULL)
				err("%s", strerror(errno));
			break;
		case F_TIME:
			ip->st_mtime = strtoul(val, &ep, 10);
			if (*ep)
				err("invalid time %s", val);
			break;
		case F_TYPE:
			switch(*val) {
			case 'b':
				if (!strcmp(val, "block"))
					ip->type = F_BLOCK;
				break;
			case 'c':
				if (!strcmp(val, "char"))
					ip->type = F_CHAR;
				break;
			case 'd':
				if (!strcmp(val, "dir"))
					ip->type = F_DIR;
				break;
			case 'f':
				if (!strcmp(val, "file"))
					ip->type = F_FILE;
				if (!strcmp(val, "fifo"))
					ip->type = F_FIFO;
				break;
			case 'l':
				if (!strcmp(val, "link"))
					ip->type = F_LINK;
				break;
			case 's':
				if (!strcmp(val, "socket"))
					ip->type = F_SOCK;
				break;
			default:
				err("unknown file type %s", val);
			}
			break;
		case F_UID:
			ip->st_uid = strtoul(val, &ep, 10);
			if (*ep)
				err("invalid uid %s", val);
			break;
		case F_UNAME:
			if ((pw = getpwnam(val)) == NULL)
			    err("unknown user %s", val);
			ip->st_uid = pw->pw_uid;
			break;
		}
	}
}

static void
unset(t, ip)
	char *t;
	register NODE *ip;
{
	register char *p;

	while (p = strtok(t, "\n\t "))
		ip->flags &= ~parsekey(p, NULL);
}
Commit	Line	Data
15637ed4 RG	1	/*-
	2	* Copyright (c) 1989 The Regents of the University of California.
	3	* 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
4e97a0eb	35	static char sccsid[] = "@(#)spec.c 5.17 (Berkeley) 4/17/92";
15637ed4 RG	36	#endif /* not lint */
	37
	38	#include <sys/types.h>
4e97a0eb NW	39	#include <sys/stat.h>
4e97a0eb NW	40	#include <fts.h>
15637ed4 RG	41	#include <pwd.h>
15637ed4 RG	42	#include <grp.h>
15637ed4	43	#include <errno.h>
4e97a0eb NW	44	#include <unistd.h>
4e97a0eb NW	45	#include <stdio.h>
15637ed4 RG	46	#include <ctype.h>
15637ed4 RG	47	#include "mtree.h"
4e97a0eb	48	#include "extern.h"
15637ed4	49
4e97a0eb	50	int lineno; /* Current spec line number. */
15637ed4	51
4e97a0eb NW	52	static void set __P((char , NODE ));
4e97a0eb NW	53	static void unset __P((char , NODE ));
15637ed4	54
4e97a0eb	55	NODE *
15637ed4 RG	56	spec()
	57	{
	58	register NODE centry, last;
	59	register char *p;
4e97a0eb NW	60	NODE ginfo, *root;
4e97a0eb NW	61	int c_cur, c_next;
15637ed4 RG	62	char buf[2048];
15637ed4 RG	63
4e97a0eb NW	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;
15637ed4	81	}
4e97a0eb NW	82
4e97a0eb NW	83	/* Null-terminate the line. */
15637ed4	84	*p = '\0';
4e97a0eb NW	85
4e97a0eb NW	86	/* Skip leading whitespace. */
15637ed4	87	for (p = buf; p && isspace(p); ++p);
4e97a0eb NW	88
4e97a0eb NW	89	/* If nothing but whitespace or comment char, continue. */
15637ed4 RG	90	if (!p \|\| p == '#')
	91	continue;
	92
4e97a0eb NW	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");
15637ed4 RG	104
	105	if (p[0] == '/')
	106	switch(p[1]) {
	107	case 's':
	108	if (strcmp(p + 1, "set"))
	109	break;
4e97a0eb	110	set(NULL, &ginfo);
15637ed4 RG	111	continue;
	112	case 'u':
	113	if (strcmp(p + 1, "unset"))
	114	break;
4e97a0eb	115	unset(NULL, &ginfo);
15637ed4 RG	116	continue;
	117	}
	118
4e97a0eb NW	119	if (index(p, '/'))
4e97a0eb NW	120	err("slash character in file name");
15637ed4 RG	121
15637ed4 RG	122	if (!strcmp(p, "..")) {
4e97a0eb	123	/* Don't go up, if haven't gone down. */
15637ed4	124	if (!root)
4e97a0eb	125	goto noparent;
15637ed4 RG	126	if (last->type != F_DIR \|\| last->flags & F_DONE) {
15637ed4 RG	127	if (last == root)
4e97a0eb	128	goto noparent;
15637ed4 RG	129	last = last->parent;
	130	}
	131	last->flags \|= F_DONE;
	132	continue;
4e97a0eb NW	133
4e97a0eb NW	134	noparent: err("no parent node");
15637ed4 RG	135	}
15637ed4 RG	136
4e97a0eb NW	137	if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL)
4e97a0eb NW	138	err("%s", strerror(errno));
15637ed4 RG	139	*centry = ginfo;
	140	(void)strcpy(centry->name, p);
	141	#define MAGIC "?*["
	142	if (strpbrk(p, MAGIC))
	143	centry->flags \|= F_MAGIC;
4e97a0eb	144	set(NULL, centry);
15637ed4 RG	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	}
4e97a0eb	158	return (root);
15637ed4 RG	159	}
15637ed4 RG	160
4e97a0eb NW	161	static void
	162	set(t, ip)
	163	char *t;
15637ed4 RG	164	register NODE *ip;
	165	{
	166	register int type;
	167	register char kw, val;
4e97a0eb NW	168	struct group *gr;
	169	struct passwd *pw;
	170	mode_t *m;
	171	int value;
	172	char *ep;
15637ed4	173
4e97a0eb NW	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");
15637ed4 RG	178	switch(type) {
15637ed4 RG	179	case F_CKSUM:
4e97a0eb NW	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);
15637ed4	188	break;
4e97a0eb NW	189	case F_GNAME:
	190	if ((gr = getgrnam(val)) == NULL)
	191	err("unknown group %s", val);
	192	ip->st_gid = gr->gr_gid;
15637ed4 RG	193	break;
	194	case F_IGN:
	195	/* just set flag bit */
	196	break;
4e97a0eb NW	197	case F_MODE:
	198	if ((m = setmode(val)) == NULL)
	199	err("invalid file mode %s", val);
15637ed4 RG	200	ip->st_mode = getmode(m, 0);
15637ed4 RG	201	break;
15637ed4	202	case F_NLINK:
4e97a0eb NW	203	ip->st_nlink = strtoul(val, &ep, 10);
	204	if (*ep)
	205	err("invalid link count %s", val);
15637ed4 RG	206	break;
15637ed4 RG	207	case F_SIZE:
4e97a0eb NW	208	ip->st_size = strtoul(val, &ep, 10);
	209	if (*ep)
	210	err("invalid size %s", val);
15637ed4 RG	211	break;
15637ed4 RG	212	case F_SLINK:
4e97a0eb NW	213	if ((ip->slink = strdup(val)) == NULL)
4e97a0eb NW	214	err("%s", strerror(errno));
15637ed4 RG	215	break;
15637ed4 RG	216	case F_TIME:
4e97a0eb NW	217	ip->st_mtime = strtoul(val, &ep, 10);
	218	if (*ep)
	219	err("invalid time %s", val);
15637ed4 RG	220	break;
	221	case F_TYPE:
	222	switch(*val) {
	223	case 'b':
	224	if (!strcmp(val, "block"))
	225	ip->type = F_BLOCK;
	226	break;
	227	case 'c':
	228	if (!strcmp(val, "char"))
	229	ip->type = F_CHAR;
	230	break;
	231	case 'd':
	232	if (!strcmp(val, "dir"))
	233	ip->type = F_DIR;
	234	break;
	235	case 'f':
	236	if (!strcmp(val, "file"))
	237	ip->type = F_FILE;
	238	if (!strcmp(val, "fifo"))
	239	ip->type = F_FIFO;
	240	break;
	241	case 'l':
	242	if (!strcmp(val, "link"))
	243	ip->type = F_LINK;
	244	break;
	245	case 's':
	246	if (!strcmp(val, "socket"))
	247	ip->type = F_SOCK;
	248	break;
	249	default:
4e97a0eb	250	err("unknown file type %s", val);
15637ed4 RG	251	}
15637ed4 RG	252	break;
4e97a0eb NW	253	case F_UID:
	254	ip->st_uid = strtoul(val, &ep, 10);
	255	if (*ep)
	256	err("invalid uid %s", val);
	257	break;
	258	case F_UNAME:
	259	if ((pw = getpwnam(val)) == NULL)
	260	err("unknown user %s", val);
	261	ip->st_uid = pw->pw_uid;
	262	break;
15637ed4 RG	263	}
	264	}
	265	}
	266
4e97a0eb NW	267	static void
	268	unset(t, ip)
	269	char *t;
15637ed4 RG	270	register NODE *ip;
	271	{
	272	register char *p;
	273
4e97a0eb NW	274	while (p = strtok(t, "\n\t "))
4e97a0eb NW	275	ip->flags &= ~parsekey(p, NULL);
15637ed4	276	}