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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/locate/locate/util.c	Lines:	0	74	0.0 %
Date:	2017-11-07	Branches:	0	68	0.0 %


/*	$OpenBSD: util.c,v 1.14 2016/09/01 09:48:20 tedu Exp $
 *
 * 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. 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.
 *
 * $Id: util.c,v 1.14 2016/09/01 09:48:20 tedu Exp $
 */


#include <stdlib.h>
#include <string.h>
#include <err.h>
#include <stdio.h>
#include <limits.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);

	(void)fprintf(stderr, "locate database header corrupt, bigram ");
	(void)fprintf(stderr, "char outside 0, %d-%d: %d\n",
	    ASCII_MIN, ASCII_MAX, ch);
	exit(1);
}

/* split a colon separated string into a char vector
 *
 * "bla:foo" -> {"bla", "foo"}
 * "bla:"    -> {"bla", 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(*dbv))) == NULL)
			err(1, "malloc");
		*dbv = NULL;
	}

	/* empty string */
	if (*path == '\0') {
		(void)fprintf(stderr, "empty database name, ignored\n");
		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))) {
			char **newdbv;

			/* single colon -> dot */
			if (ch == c)
				p = dot;
			else {
				/* a string */
				slen = ch - c;
				if ((p = calloc(sizeof(char), slen + 1))
				    == NULL)
					err(1, "malloc");
				bcopy(c, p, slen);
				*(p + slen) = '\0';
			}
			/* increase dbv with element p */
			if ((newdbv = reallocarray(dbv, vlen + 2,
			    sizeof(*newdbv))) == NULL)
				err(1, "realloc");
			dbv = newdbv;
			*(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;
{
	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 (strchr(LOCATE_REG, *p) == NULL)
			break;

	/*
	 * check if maybe we are in a character class
	 *
	 * 'foo.[ch]'
	 *        |----< p
	 */
	if (p >= name &&
	    (strchr(p, '[') != NULL || strchr(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 && strchr(LOCATE_REG, *p) != NULL)
			p = name - 1;
	}

	if (p < name)
		/* only meta chars: "???", force '/' search */
		*subp++ = '/';

	else {
		for (endmark = p; p >= name; p--)
			if (strchr(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;
{
	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.
 *
 * Convert network byte order to host byte order if necessary.
 */

int
getwm(p)
	caddr_t p;
{
	union {
		char buf[INTSIZE];
		int i;
	} u;
	int i;

	for (i = 0; i < INTSIZE; i++)
		u.buf[i] = *p++;

	i = u.i;

	if (i > PATH_MAX || i < -(PATH_MAX)) {
		i = ntohl(i);
		if (i > PATH_MAX || i < -(PATH_MAX)) {
			(void)fprintf(stderr,
			    "integer out of +-PATH_MAX (%d): %d\n",
			    PATH_MAX, i);
			exit(1);
		}
	}
	return(i);
}

/*
 * Read integer from stream.
 *
 * Convert network byte order to host byte order if necessary.
 * 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;
{
	int word;

	word = getw(fp);

	if (word > PATH_MAX || word < -(PATH_MAX)) {
		word = ntohl(word);
		if (word > PATH_MAX || word < -(PATH_MAX)) {
			(void)fprintf(stderr,
			    "integer out of +-PATH_MAX (%d): %d\n",
			    PATH_MAX, word);
			exit(1);
		}
	}
	return(word);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: util.c,v 1.14 2016/09/01 09:48:20 tedu Exp $
2			*
3			* Copyright (c) 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
4			* Copyright (c) 1989, 1993
5			* The Regents of the University of California. All rights reserved.
6			*
7			* This code is derived from software contributed to Berkeley by
8			* James A. Woods.
9			*
10			* Redistribution and use in source and binary forms, with or without
11			* modification, are permitted provided that the following conditions
12			* are met:
13			* 1. Redistributions of source code must retain the above copyright
14			* notice, this list of conditions and the following disclaimer.
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in the
17			* documentation and/or other materials provided with the distribution.
18			* 3. Neither the name of the University nor the names of its contributors
19			* may be used to endorse or promote products derived from this software
20			* without specific prior written permission.
21			*
22			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32			* SUCH DAMAGE.
33			*
34			* $Id: util.c,v 1.14 2016/09/01 09:48:20 tedu Exp $
35			*/
36
37
38			#include <stdlib.h>
39			#include <string.h>
40			#include <err.h>
41			#include <stdio.h>
42			#include <limits.h>
43
44			#include "locate.h"
45
46			char colon(char , char, char);
47			char patprep(char );
48			void print_matches(u_int);
49			u_char tolower_word(u_char );
50			int getwm(caddr_t);
51			int getwf(FILE *);
52			int check_bigram_char(int);
53
54			/*
55			* Validate bigram chars. If the test failed the database is corrupt
56			* or the database is obviously not a locate database.
57			*/
58			int
59			check_bigram_char(ch)
60			int ch;
61			{
62			/* legal bigram: 0, ASCII_MIN ... ASCII_MAX */
63			if (ch == 0 \|\|
64			(ch >= ASCII_MIN && ch <= ASCII_MAX))
65			return(ch);
66
67			(void)fprintf(stderr, "locate database header corrupt, bigram ");
68			(void)fprintf(stderr, "char outside 0, %d-%d: %d\n",
69			ASCII_MIN, ASCII_MAX, ch);
70			exit(1);
71			}
72
73			/* split a colon separated string into a char vector
74			*
75			* "bla:foo" -> {"bla", "foo"}
76			* "bla:" -> {"bla", dot}
77			* "bla" -> {"bla"}
78			* "" -> do nothing
79			*
80			*/
81			char **
82			colon(dbv, path, dot)
83			char **dbv;
84			char *path;
85			char dot; / default for single ':' */
86			{
87			int vlen, slen;
88			char c, ch, *p;
89			char **pv;
90
91			if (dbv == NULL) {
92			if ((dbv = malloc(sizeof(*dbv))) == NULL)
93			err(1, "malloc");
94			*dbv = NULL;
95			}
96
97			/* empty string */
98			if (*path == '\0') {
99			(void)fprintf(stderr, "empty database name, ignored\n");
100			return(dbv);
101			}
102
103			/* length of string vector */
104			for (vlen = 0, pv = dbv; *pv != NULL; pv++, vlen++)
105			;
106
107			for (ch = c = path; ; ch++) {
108			if (*ch == ':' \|\|
109			(!ch && !((ch - 1) == ':' && ch == 1+ path))) {
110			char **newdbv;
111
112			/* single colon -> dot */
113			if (ch == c)
114			p = dot;
115			else {
116			/* a string */
117			slen = ch - c;
118			if ((p = calloc(sizeof(char), slen + 1))
119			== NULL)
120			err(1, "malloc");
121			bcopy(c, p, slen);
122			*(p + slen) = '\0';
123			}
124			/* increase dbv with element p */
125			if ((newdbv = reallocarray(dbv, vlen + 2,
126			sizeof(*newdbv))) == NULL)
127			err(1, "realloc");
128			dbv = newdbv;
129			*(dbv + vlen) = p;
130			*(dbv + ++vlen) = NULL;
131			c = ch + 1;
132			}
133			if (*ch == '\0')
134			break;
135			}
136			return (dbv);
137			}
138
139			void
140			print_matches(counter)
141			u_int counter;
142			{
143			(void)printf("%d\n", counter);
144			}
145
146
147			/*
148			* extract last glob-free subpattern in name for fast pre-match; prepend
149			* '\0' for backwards match; return end of new pattern
150			*/
151			static char globfree[100];
152
153			char *
154			patprep(name)
155			char *name;
156			{
157			char endmark, p, *subp;
158
159			subp = globfree;
160			subp++ = '\0'; / set first element to '\0' */
161			p = name + strlen(name) - 1;
162
163			/* skip trailing metacharacters */
164			for (; p >= name; p--)
165			if (strchr(LOCATE_REG, *p) == NULL)
166			break;
167
168			/*
169			* check if maybe we are in a character class
170			*
171			* 'foo.[ch]'
172			* \|----< p
173			*/
174			if (p >= name &&
175			(strchr(p, '[') != NULL \|\| strchr(p, ']') != NULL)) {
176			for (p = name; *p != '\0'; p++)
177			if (p == ']' \|\| p == '[')
178			break;
179			p--;
180
181			/*
182			* cannot find a non-meta character, give up
183			* '\[a-z]'
184			* \|-------< p
185			*/
186			if (p >= name && strchr(LOCATE_REG, *p) != NULL)
187			p = name - 1;
188			}
189
190			if (p < name)
191			/* only meta chars: "???", force '/' search */
192			*subp++ = '/';
193
194			else {
195			for (endmark = p; p >= name; p--)
196			if (strchr(LOCATE_REG, *p) != NULL)
197			break;
198			for (++p;
199			(p <= endmark) && subp < (globfree + sizeof(globfree));)
200			subp++ = p++;
201			}
202			*subp = '\0';
203			return(--subp);
204			}
205
206			/* tolower word */
207			u_char *
208			tolower_word(word)
209			u_char *word;
210			{
211			u_char *p;
212
213			for (p = word; *p != '\0'; p++)
214			p = TOLOWER(p);
215
216			return(word);
217			}
218
219
220			/*
221			* Read integer from mmap pointer.
222			* Essential a simple ``return (int )p'' but avoid sigbus
223			* for integer alignment.
224			*
225			* Convert network byte order to host byte order if necessary.
226			*/
227
228			int
229			getwm(p)
230			caddr_t p;
231			{
232			union {
233			char buf[INTSIZE];
234			int i;
235			} u;
236			int i;
237
238			for (i = 0; i < INTSIZE; i++)
239			u.buf[i] = *p++;
240
241			i = u.i;
242
243			if (i > PATH_MAX \|\| i < -(PATH_MAX)) {
244			i = ntohl(i);
245			if (i > PATH_MAX \|\| i < -(PATH_MAX)) {
246			(void)fprintf(stderr,
247			"integer out of +-PATH_MAX (%d): %d\n",
248			PATH_MAX, i);
249			exit(1);
250			}
251			}
252			return(i);
253			}
254
255			/*
256			* Read integer from stream.
257			*
258			* Convert network byte order to host byte order if necessary.
259			* So we can read on FreeBSD/i386 (little endian) a locate database
260			* which was built on SunOS/sparc (big endian).
261			*/
262
263			int
264			getwf(fp)
265			FILE *fp;
266			{
267			int word;
268
269			word = getw(fp);
270
271			if (word > PATH_MAX \|\| word < -(PATH_MAX)) {
272			word = ntohl(word);
273			if (word > PATH_MAX \|\| word < -(PATH_MAX)) {
274			(void)fprintf(stderr,
275			"integer out of +-PATH_MAX (%d): %d\n",
276			PATH_MAX, word);
277			exit(1);
278			}
279			}
280			return(word);
281			}