1 files changed, 278 insertions, 0 deletions
diff --git a/shell_cmds/locate/locate/util.c b/shell_cmds/locate/locate/util.c
new file mode 100644
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+++ b/shell_cmds/locate/locate/util.c
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+/*
+ * Copyright (c) 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * James A. Woods.
+ *
+ * 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.
+ *
+ * $FreeBSD: src/usr.bin/locate/locate/util.c,v 1.10 2002/06/24 12:40:11 naddy Exp $
+ */
+
+
+#include <stdlib.h>
+#include <string.h>
+#include <err.h>
+#include <sys/param.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+
+#include "locate.h"
+
+char 	**colon(char **, char*, char*);
+char 	*patprep(char *);
+void print_matches(u_int);
+u_char 	*tolower_word(u_char *);
+int 	getwm(caddr_t);
+int 	getwf(FILE *);
+int	check_bigram_char(int);
+
+/* 
+ * Validate bigram chars. If the test failed the database is corrupt 
+ * or the database is obviously not a locate database.
+ */
+int
+check_bigram_char(ch)
+	int ch;
+{
+	/* legal bigram: 0, ASCII_MIN ... ASCII_MAX */
+	if (ch == 0 ||
+	    (ch >= ASCII_MIN && ch <= ASCII_MAX))
+		return(ch);
+
+	errx(1,
+		"locate database header corrupt, bigram char outside 0, %d-%d: %d",  
+		ASCII_MIN, ASCII_MAX, ch);
+	exit(1);
+}
+
+/* split a colon separated string into a char vector
+ *
+ * "bla:foo" -> {"foo", "bla"}
+ * "bla:"    -> {"foo", dot}
+ * "bla"     -> {"bla"}
+ * ""	     -> do nothing
+ *
+ */
+char **
+colon(dbv, path, dot)
+	char **dbv;
+	char *path;
+	char *dot; /* default for single ':' */
+{
+	int vlen, slen;
+	char *c, *ch, *p;
+	char **pv;
+
+	if (dbv == NULL) {
+		if ((dbv = malloc(sizeof(char **))) == NULL)
+			err(1, "malloc");
+		*dbv = NULL;
+	}
+
+	/* empty string */
+	if (*path == '\0') {
+		warnx("empty database name, ignored");
+		return(dbv);
+	}
+
+	/* length of string vector */
+	for(vlen = 0, pv = dbv; *pv != NULL; pv++, vlen++);
+
+	for (ch = c = path; ; ch++) {
+		if (*ch == ':' ||
+		    (!*ch && !(*(ch - 1) == ':' && ch == 1+ path))) {
+			/* single colon -> dot */
+			if (ch == c)
+				p = dot;
+			else {
+				/* a string */
+				slen = ch - c;
+				if ((p = malloc(sizeof(char) * (slen + 1))) 
+				    == NULL)
+					err(1, "malloc");
+				bcopy(c, p, slen);
+				*(p + slen) = '\0';
+			}
+			/* increase dbv with element p */
+			if ((dbv = realloc(dbv, sizeof(char **) * (vlen + 2)))
+			    == NULL)
+				err(1, "realloc");
+			*(dbv + vlen) = p;
+			*(dbv + ++vlen) = NULL;
+			c = ch + 1;
+		}
+		if (*ch == '\0')
+			break;
+	}
+	return (dbv);
+}
+
+void 
+print_matches(counter)
+	u_int counter;
+{
+	(void)printf("%d\n", counter);
+}
+
+
+/*
+ * extract last glob-free subpattern in name for fast pre-match; prepend
+ * '\0' for backwards match; return end of new pattern
+ */
+static char globfree[100];
+
+char *
+patprep(name)
+	char *name;
+{
+	register char *endmark, *p, *subp;
+
+	subp = globfree;
+	*subp++ = '\0';   /* set first element to '\0' */
+	p = name + strlen(name) - 1;
+
+	/* skip trailing metacharacters */
+	for (; p >= name; p--)
+		if (index(LOCATE_REG, *p) == NULL)
+			break;
+
+	/* 
+	 * check if maybe we are in a character class
+	 *
+	 * 'foo.[ch]'
+	 *        |----< p
+	 */
+	if (p >= name && 
+	    (index(p, '[') != NULL || index(p, ']') != NULL)) {
+		for (p = name; *p != '\0'; p++)
+			if (*p == ']' || *p == '[')
+				break;
+		p--;
+
+		/* 
+		 * cannot find a non-meta character, give up
+		 * '*\*[a-z]'
+		 *    |-------< p
+		 */
+		if (p >= name && index(LOCATE_REG, *p) != NULL)
+			p = name - 1;
+	}
+	
+	if (p < name) 			
+		/* only meta chars: "???", force '/' search */
+		*subp++ = '/';
+
+	else {
+		for (endmark = p; p >= name; p--)
+			if (index(LOCATE_REG, *p) != NULL)
+				break;
+		for (++p;
+		    (p <= endmark) && subp < (globfree + sizeof(globfree));)
+			*subp++ = *p++;
+	}
+	*subp = '\0';
+	return(--subp);
+}
+
+/* tolower word */
+u_char *
+tolower_word(word)
+	u_char *word;
+{
+	register u_char *p;
+
+	for(p = word; *p != '\0'; p++)
+		*p = TOLOWER(*p);
+
+	return(word);
+}
+
+
+/*
+ * Read integer from mmap pointer. 
+ * Essential a simple  ``return *(int *)p'' but avoid sigbus 
+ * for integer alignment (SunOS 4.x, 5.x).
+ *
+ * Convert network byte order to host byte order if neccessary. 
+ * So we can read on FreeBSD/i386 (little endian) a locate database
+ * which was built on SunOS/sparc (big endian).
+ */
+
+int 
+getwm(p)
+	caddr_t p;
+{
+	union {
+		char buf[INTSIZE];
+		int i;
+	} u;
+	register int i;
+
+	for (i = 0; i < INTSIZE; i++)
+		u.buf[i] = *p++;
+
+	i = u.i;
+
+	if (i > MAXPATHLEN || i < -(MAXPATHLEN)) {
+		i = ntohl(i);
+		if (i > MAXPATHLEN || i < -(MAXPATHLEN))
+			errx(1, "integer out of +-MAXPATHLEN (%d): %d",
+			    MAXPATHLEN, abs(i) < abs(htonl(i)) ? i : htonl(i));
+	}
+	return(i);
+}
+
+/*
+ * Read integer from stream.
+ *
+ * Convert network byte order to host byte order if neccessary. 
+ * So we can read on FreeBSD/i386 (little endian) a locate database
+ * which was built on SunOS/sparc (big endian).
+ */
+
+int
+getwf(fp)
+	FILE *fp;
+{
+	register int word;
+
+	word = getw(fp);
+
+	if (word > MAXPATHLEN || word < -(MAXPATHLEN)) {
+		word = ntohl(word);
+		if (word > MAXPATHLEN || word < -(MAXPATHLEN))
+			errx(1, "integer out of +-MAXPATHLEN (%d): %d",
+			    MAXPATHLEN, abs(word) < abs(htonl(word)) ? word :
+				htonl(word));
+	}
+	return(word);
+}