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gno/usr.bin/whereis/whereis.c

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/*-
* Copyright (c) 1980 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.
*
* $Id: whereis.c,v 1.3 1997/09/30 04:22:43 gdr Exp $
*/
#if !defined(lint) && !defined(__GNO__)
char copyright[] =
"@(#) Copyright (c) 1980 The Regents of the University of California.\n\
All rights reserved.\n";
static char sccsid[] = "@(#)whereis.c 5.5 (Berkeley) 4/18/91";
#endif /* not lint */
#include <sys/param.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <dirent.h>
#include <stdio.h>
#include <ctype.h>
#include <err.h>
#include <assert.h>
#include <gno/contrib.h>
#define LINEBUF_SIZE 128 /* max size of conf line */
#define CONF_PATH "/etc/whereis.conf" /* default path */
#define CONF_ENV "WHEREIS_CONF" /* name of environ variable */
#define PROWORD_BIN "bindirs" /* keyword in whereis.conf */
#define PROWORD_MAN "mandirs" /* keyword in whereis.conf */
#define PROWORD_SRC "srcdirs" /* keyword in whereis.conf */
/*
* These string arrays will hold the paths that we want to check, as
* defined in the whereis.conf file.
*/
LC_StringArray_t Sbindirs = NULL;
LC_StringArray_t Smandirs = NULL;
LC_StringArray_t Ssrcdirs = NULL;
/* pointers to the vectors in the above string arrays; legacy code */
char **bindirs;
char **mandirs;
char **srcdirs;
int cflag = 1;
char sflag = 1;
char bflag = 1;
char mflag = 1;
char **Sflag;
int Scnt;
char **Bflag;
int Bcnt;
char **Mflag;
int Mcnt;
char uflag;
char *verstring = "whereis version 1.3";
void getlist (int *argcp, char ***argvp, char ***flagp, int *cntp);
void zerof(void);
void lookup (register char *cp);
void findin (char *dir, char *cp);
int itsit (register char *cp, register char *dp);
void getDirectories (void);
void addIdent (int ident, char *path);
/*
* If INLINE_FUNCS is defined, we use macro versions of some very
* short routines. Unfortunately, ORCA/C v2.1.x doesn't have the
* ability to do this itself.
*/
#define INLINE_FUNCS
#ifdef INLINE_FUNCS
#define find(dirs, cp) \
{ \
char **ldirs = dirs; \
while (*ldirs) { \
findin(*ldirs++, cp); \
} \
}
#define findv(dirv, dirc, cp) \
{ \
char **ldirv = dirv; \
int ldirc = dirc; \
while (ldirc > 0) { \
findin(*ldirv++, cp); \
dirc--; \
} \
}
#define looksrc(cp) \
{ \
if (Sflag == 0) { \
find(srcdirs, cp); \
} else { \
findv(Sflag, Scnt, cp); \
} \
}
#define lookbin(cp) \
{ \
if (Bflag == 0) { \
find(bindirs, cp); \
} else { \
findv(Bflag, Bcnt, cp); \
} \
}
#define lookman(cp) \
{ \
if (Mflag == 0) { \
find(mandirs, cp); \
} else { \
findv(Mflag, Mcnt, cp); \
} \
}
#else
void looksrc (char *cp);
void lookbin (char *cp);
void lookman (char *cp);
void find (char **dirs, char *cp);
void findv (char **dirv, int dirc, char *cp);
#endif
#if defined(__GNO__) && defined(__STACK_CHECK__)
#include <gno/gno.h>
static void
stackResults(void) {
fprintf(stderr, "stack usage:\t ===> %d bytes <===\n",
_endStackCheck());
}
#endif
/*
* whereis name
* look for source, documentation and binaries
*/
int
main(int argc, char **argv) {
#ifdef __STACK_CHECK__
_beginStackCheck();
atexit(stackResults);
#endif
/* quick usage check */
argc--, argv++;
if (argc == 0) {
usage:
fprintf(stderr,
"whereis [ -sbmucV ] [ -SBM dir ... -f ] name...\n");
exit(1);
}
/* initialize string arrays */
Sbindirs = LC_StringArrayNew();
Smandirs = LC_StringArrayNew();
Ssrcdirs = LC_StringArrayNew();
/* get the list of directories where we will look */
getDirectories();
bindirs = Sbindirs->lc_vec;
mandirs = Smandirs->lc_vec;
srcdirs = Ssrcdirs->lc_vec;
do {
if (argv[0][0] == '-') {
register char *cp = argv[0] + 1;
while (*cp) switch (*cp++) {
case 'f':
break;
case 'S':
getlist(&argc, &argv, &Sflag, &Scnt);
break;
case 'B':
getlist(&argc, &argv, &Bflag, &Bcnt);
break;
case 'M':
getlist(&argc, &argv, &Mflag, &Mcnt);
break;
case 's':
zerof();
sflag++;
continue;
case 'u':
uflag++;
continue;
case 'b':
zerof();
bflag++;
continue;
case 'm':
zerof();
mflag++;
continue;
case 'c':
cflag = 0;
continue;
case 'V':
printf("%s\n",verstring);
continue;
default:
goto usage;
}
argv++;
} else {
lookup(*argv++);
}
} while (--argc > 0);
exit(0);
}
void getlist (int *argcp, char ***argvp, char ***flagp, int *cntp) {
(*argvp)++;
*flagp = *argvp;
*cntp = 0;
for ((*argcp)--; *argcp > 0 && (*argvp)[0][0] != '-'; (*argcp)--)
(*cntp)++, (*argvp)++;
(*argcp)++;
(*argvp)--;
}
void zerof (void) {
if (sflag && bflag && mflag)
sflag = bflag = mflag = 0;
}
int count;
int print;
void lookup (register char *cp) {
register char *dp;
for (dp = cp; *dp; dp++)
continue;
for (; dp > cp; dp--) {
if (*dp == '.') {
*dp = 0;
break;
}
}
for (dp = cp; *dp; dp++)
if (*dp == '/')
cp = dp + 1;
if (uflag) {
print = 0;
count = 0;
} else
print = 1;
again:
if (print)
printf("%s:", cp);
if (sflag) {
looksrc(cp);
if (uflag && print == 0 && count != 1) {
print = 1;
goto again;
}
}
count = 0;
if (bflag) {
lookbin(cp);
if (uflag && print == 0 && count != 1) {
print = 1;
goto again;
}
}
count = 0;
if (mflag) {
lookman(cp);
if (uflag && print == 0 && count != 1) {
print = 1;
goto again;
}
}
if (print)
printf("\n");
}
#ifndef INLINE_FUNCS
void looksrc (char *cp) {
if (Sflag == 0) {
find(srcdirs, cp);
} else
findv(Sflag, Scnt, cp);
}
void lookbin (char *cp) {
if (Bflag == 0)
find(bindirs, cp);
else
findv(Bflag, Bcnt, cp);
}
void lookman (char *cp) {
if (Mflag == 0) {
find(mandirs, cp);
} else
findv(Mflag, Mcnt, cp);
}
void findv (char **dirv, int dirc, char *cp) {
while (dirc > 0) {
findin(*dirv++, cp);
dirc--;
}
}
void find (char **dirs, char *cp) {
while (*dirs)
findin(*dirs++, cp);
}
#endif /* ! INLINE_FUNCS */
void findin (char *dir, char *cp) {
DIR *dirp;
struct dirent *dp;
dirp = opendir(dir);
if (dirp == NULL)
return;
while ((dp = readdir(dirp)) != NULL) {
if (itsit(cp, dp->d_name)) {
count++;
if (print)
printf(" %s/%s", dir, dp->d_name);
}
}
closedir(dirp);
}
int itsit (register char *cp, register char *dp) {
register int i = strlen(dp);
if (cflag) {
if ( (dp[0] == 's' || dp[0] == 'S')
&& dp[1] == '.' && itsit(cp, dp+2))
return (1);
while (*cp && *dp && (tolower(*cp) == tolower(*dp)))
cp++, dp++, i--;
if (*cp == 0 && *dp == 0)
return (1);
while (isdigit(*dp))
dp++;
if (*cp == 0 && *dp++ == '.') {
/* removed for GNO, because we want to look up compressed files also. */
#ifndef __GNO__
--i;
while (i > 0 && *dp)
if (--i, *dp++ == '.')
return (*dp++ == 'C' && *dp++ == 0);
#endif
return (1);
}
} else {
if (dp[0] == 's' && dp[1] == '.' && itsit(cp, dp+2))
return (1);
while (*cp && *dp && *cp == *dp)
cp++, dp++, i--;
if (*cp == 0 && *dp == 0)
return (1);
while (isdigit(*dp))
dp++;
if (*cp == 0 && *dp++ == '.') {
/* removed for GNO, because we want to look up compressed files also. */
#ifndef __GNO__
--i;
while (i > 0 && *dp)
if (--i, *dp++ == '.')
return (*dp++ == 'C' && *dp++ == 0);
#endif
return (1);
}
}
return (0);
}
/*
* addDirectories
* Parse the configuration file and determine in what directories
* we're supposed to be looking.
*/
char linebuf[LINEBUF_SIZE];
#define STATE_AT_FILE 1
#define STATE_SAW_ID 2
#define STATE_SAW_COLON 3
#define STATE_SAW_PATHS 4
#define IDENT_BIN 1
#define IDENT_MAN 2
#define IDENT_SRC 3
void
getDirectories (void) {
char *confpath, *p;
FILE *fp;
int state, line, ident;
if (((confpath = getenv(CONF_ENV)) == NULL) ||
(*confpath == '\0')) {
confpath = CONF_PATH;
}
if ((fp = fopen(confpath, "r")) == NULL) {
err(1, "couldn't open config file %s", confpath);
}
state = STATE_AT_FILE;
line = 0;
while (fgets (linebuf, LINEBUF_SIZE, fp) != NULL) {
/* increment the line count */
line++;
/* delete any comments */
if ((p = strchr(linebuf, '#')) != NULL) {
*p = '\0';
}
/* parse each word */
if ((p = strtok(linebuf, " \t\r\n\v")) == NULL) {
continue;
}
do {
switch(state) {
case STATE_AT_FILE:
if (!strcmp(p, PROWORD_BIN)) {
state = STATE_SAW_ID;
ident = IDENT_BIN;
} else if (!strcmp(p, PROWORD_MAN)) {
state = STATE_SAW_ID;
ident = IDENT_MAN;
} else if (!strcmp(p, PROWORD_SRC)) {
state = STATE_SAW_ID;
ident = IDENT_SRC;
} else {
errx(1,
"%s: line %d: identifier expected",
confpath, line);
}
break;
case STATE_SAW_ID:
if ((*p != ':') || (*(p+1) != '\0')) {
errx(1, "%s: line %d: expected ':'",
confpath, line);
}
state = STATE_SAW_COLON;
break;
case STATE_SAW_COLON:
if ((*p == ';') && (*(p+1) == '\0')) {
state = STATE_AT_FILE;
} else {
addIdent(ident, p);
}
break;
case STATE_SAW_PATHS:
break;
default: assert(0);
}
} while ((p = strtok(NULL, NULL)) != NULL);
}
fclose(fp);
}
/*
* addIdent
* Add an entry to the bindirs, mandirs, or srcdirs arrays, as
* appropriate.
*/
void addIdent (int ident, char *path) {
char ***dirptr;
switch(ident) {
case IDENT_BIN:
LC_StringArrayAdd(Sbindirs, path);
break;
case IDENT_MAN:
LC_StringArrayAdd(Smandirs, path);
break;
case IDENT_SRC:
LC_StringArrayAdd(Ssrcdirs, path);
break;
default:
assert(0);
}
}
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