6576952ca5
the mtimes of a file. (This is probably only useful if you have vfs.timestamp_precision set to something nonzero). PR: 39163 Submitted by: Hal Burch <hburch@lumeta.com> MFC after: 2 weeks
551 lines
9.7 KiB
C
551 lines
9.7 KiB
C
/* $NetBSD: test.c,v 1.21 1999/04/05 09:48:38 kleink Exp $ */
|
|
|
|
/*
|
|
* test(1); version 7-like -- author Erik Baalbergen
|
|
* modified by Eric Gisin to be used as built-in.
|
|
* modified by Arnold Robbins to add SVR3 compatibility
|
|
* (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket).
|
|
* modified by J.T. Conklin for NetBSD.
|
|
*
|
|
* This program is in the Public Domain.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <inttypes.h>
|
|
#include <limits.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#ifdef SHELL
|
|
#define main testcmd
|
|
#include "bltin/bltin.h"
|
|
#else
|
|
#include <locale.h>
|
|
|
|
static void error(const char *, ...) __dead2 __printf0like(1, 2);
|
|
|
|
static void
|
|
error(const char *msg, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap, msg);
|
|
verrx(2, msg, ap);
|
|
/*NOTREACHED*/
|
|
va_end(ap);
|
|
}
|
|
#endif
|
|
|
|
/* test(1) accepts the following grammar:
|
|
oexpr ::= aexpr | aexpr "-o" oexpr ;
|
|
aexpr ::= nexpr | nexpr "-a" aexpr ;
|
|
nexpr ::= primary | "!" primary
|
|
primary ::= unary-operator operand
|
|
| operand binary-operator operand
|
|
| operand
|
|
| "(" oexpr ")"
|
|
;
|
|
unary-operator ::= "-r"|"-w"|"-x"|"-f"|"-d"|"-c"|"-b"|"-p"|
|
|
"-u"|"-g"|"-k"|"-s"|"-t"|"-z"|"-n"|"-o"|"-O"|"-G"|"-L"|"-S";
|
|
|
|
binary-operator ::= "="|"!="|"-eq"|"-ne"|"-ge"|"-gt"|"-le"|"-lt"|
|
|
"-nt"|"-ot"|"-ef";
|
|
operand ::= <any legal UNIX file name>
|
|
*/
|
|
|
|
enum token {
|
|
EOI,
|
|
FILRD,
|
|
FILWR,
|
|
FILEX,
|
|
FILEXIST,
|
|
FILREG,
|
|
FILDIR,
|
|
FILCDEV,
|
|
FILBDEV,
|
|
FILFIFO,
|
|
FILSOCK,
|
|
FILSYM,
|
|
FILGZ,
|
|
FILTT,
|
|
FILSUID,
|
|
FILSGID,
|
|
FILSTCK,
|
|
FILNT,
|
|
FILOT,
|
|
FILEQ,
|
|
FILUID,
|
|
FILGID,
|
|
STREZ,
|
|
STRNZ,
|
|
STREQ,
|
|
STRNE,
|
|
STRLT,
|
|
STRGT,
|
|
INTEQ,
|
|
INTNE,
|
|
INTGE,
|
|
INTGT,
|
|
INTLE,
|
|
INTLT,
|
|
UNOT,
|
|
BAND,
|
|
BOR,
|
|
LPAREN,
|
|
RPAREN,
|
|
OPERAND
|
|
};
|
|
|
|
enum token_types {
|
|
UNOP,
|
|
BINOP,
|
|
BUNOP,
|
|
BBINOP,
|
|
PAREN
|
|
};
|
|
|
|
struct t_op {
|
|
const char *op_text;
|
|
short op_num, op_type;
|
|
} const ops [] = {
|
|
{"-r", FILRD, UNOP},
|
|
{"-w", FILWR, UNOP},
|
|
{"-x", FILEX, UNOP},
|
|
{"-e", FILEXIST,UNOP},
|
|
{"-f", FILREG, UNOP},
|
|
{"-d", FILDIR, UNOP},
|
|
{"-c", FILCDEV,UNOP},
|
|
{"-b", FILBDEV,UNOP},
|
|
{"-p", FILFIFO,UNOP},
|
|
{"-u", FILSUID,UNOP},
|
|
{"-g", FILSGID,UNOP},
|
|
{"-k", FILSTCK,UNOP},
|
|
{"-s", FILGZ, UNOP},
|
|
{"-t", FILTT, UNOP},
|
|
{"-z", STREZ, UNOP},
|
|
{"-n", STRNZ, UNOP},
|
|
{"-h", FILSYM, UNOP}, /* for backwards compat */
|
|
{"-O", FILUID, UNOP},
|
|
{"-G", FILGID, UNOP},
|
|
{"-L", FILSYM, UNOP},
|
|
{"-S", FILSOCK,UNOP},
|
|
{"=", STREQ, BINOP},
|
|
{"!=", STRNE, BINOP},
|
|
{"<", STRLT, BINOP},
|
|
{">", STRGT, BINOP},
|
|
{"-eq", INTEQ, BINOP},
|
|
{"-ne", INTNE, BINOP},
|
|
{"-ge", INTGE, BINOP},
|
|
{"-gt", INTGT, BINOP},
|
|
{"-le", INTLE, BINOP},
|
|
{"-lt", INTLT, BINOP},
|
|
{"-nt", FILNT, BINOP},
|
|
{"-ot", FILOT, BINOP},
|
|
{"-ef", FILEQ, BINOP},
|
|
{"!", UNOT, BUNOP},
|
|
{"-a", BAND, BBINOP},
|
|
{"-o", BOR, BBINOP},
|
|
{"(", LPAREN, PAREN},
|
|
{")", RPAREN, PAREN},
|
|
{0, 0, 0}
|
|
};
|
|
|
|
struct t_op const *t_wp_op;
|
|
char **t_wp;
|
|
|
|
static int aexpr(enum token);
|
|
static int binop(void);
|
|
static int equalf(const char *, const char *);
|
|
static int filstat(char *, enum token);
|
|
static int getn(const char *);
|
|
static intmax_t getq(const char *);
|
|
static int intcmp(const char *, const char *);
|
|
static int isoperand(void);
|
|
static int newerf(const char *, const char *);
|
|
static int nexpr(enum token);
|
|
static int oexpr(enum token);
|
|
static int olderf(const char *, const char *);
|
|
static int primary(enum token);
|
|
static void syntax(const char *, const char *);
|
|
static enum token t_lex(char *);
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int i, res;
|
|
char *p;
|
|
char **nargv;
|
|
|
|
/*
|
|
* XXX copy the whole contents of argv to a newly allocated
|
|
* space with two extra cells filled with NULL's - this source
|
|
* code totally depends on their presence.
|
|
*/
|
|
if ((nargv = (char **)malloc((argc + 2) * sizeof(char *))) == NULL)
|
|
error("Out of space");
|
|
|
|
for (i = 0; i < argc; i++)
|
|
nargv[i] = argv[i];
|
|
|
|
nargv[i] = nargv[i + 1] = NULL;
|
|
argv = nargv;
|
|
|
|
if ((p = rindex(argv[0], '/')) == NULL)
|
|
p = argv[0];
|
|
else
|
|
p++;
|
|
if (strcmp(p, "[") == 0) {
|
|
if (strcmp(argv[--argc], "]") != 0)
|
|
error("missing ]");
|
|
argv[argc] = NULL;
|
|
}
|
|
|
|
#ifndef SHELL
|
|
(void)setlocale(LC_CTYPE, "");
|
|
#endif
|
|
t_wp = &argv[1];
|
|
res = !oexpr(t_lex(*t_wp));
|
|
|
|
if (*t_wp != NULL && *++t_wp != NULL)
|
|
syntax(*t_wp, "unexpected operator");
|
|
free(nargv);
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
syntax(const char *op, const char *msg)
|
|
{
|
|
|
|
if (op && *op)
|
|
error("%s: %s", op, msg);
|
|
else
|
|
error("%s", msg);
|
|
}
|
|
|
|
static int
|
|
oexpr(enum token n)
|
|
{
|
|
int res;
|
|
|
|
res = aexpr(n);
|
|
if (t_lex(*++t_wp) == BOR)
|
|
return oexpr(t_lex(*++t_wp)) || res;
|
|
t_wp--;
|
|
return res;
|
|
}
|
|
|
|
static int
|
|
aexpr(enum token n)
|
|
{
|
|
int res;
|
|
|
|
res = nexpr(n);
|
|
if (t_lex(*++t_wp) == BAND)
|
|
return aexpr(t_lex(*++t_wp)) && res;
|
|
t_wp--;
|
|
return res;
|
|
}
|
|
|
|
static int
|
|
nexpr(enum token n)
|
|
{
|
|
if (n == UNOT)
|
|
return !nexpr(t_lex(*++t_wp));
|
|
return primary(n);
|
|
}
|
|
|
|
static int
|
|
primary(enum token n)
|
|
{
|
|
enum token nn;
|
|
int res;
|
|
|
|
if (n == EOI)
|
|
return 0; /* missing expression */
|
|
if (n == LPAREN) {
|
|
if ((nn = t_lex(*++t_wp)) == RPAREN)
|
|
return 0; /* missing expression */
|
|
res = oexpr(nn);
|
|
if (t_lex(*++t_wp) != RPAREN)
|
|
syntax(NULL, "closing paren expected");
|
|
return res;
|
|
}
|
|
if (t_wp_op && t_wp_op->op_type == UNOP) {
|
|
/* unary expression */
|
|
if (*++t_wp == NULL)
|
|
syntax(t_wp_op->op_text, "argument expected");
|
|
switch (n) {
|
|
case STREZ:
|
|
return strlen(*t_wp) == 0;
|
|
case STRNZ:
|
|
return strlen(*t_wp) != 0;
|
|
case FILTT:
|
|
return isatty(getn(*t_wp));
|
|
default:
|
|
return filstat(*t_wp, n);
|
|
}
|
|
}
|
|
|
|
if (t_lex(t_wp[1]), t_wp_op && t_wp_op->op_type == BINOP) {
|
|
return binop();
|
|
}
|
|
|
|
return strlen(*t_wp) > 0;
|
|
}
|
|
|
|
static int
|
|
binop(void)
|
|
{
|
|
const char *opnd1, *opnd2;
|
|
struct t_op const *op;
|
|
|
|
opnd1 = *t_wp;
|
|
(void) t_lex(*++t_wp);
|
|
op = t_wp_op;
|
|
|
|
if ((opnd2 = *++t_wp) == NULL)
|
|
syntax(op->op_text, "argument expected");
|
|
|
|
switch (op->op_num) {
|
|
case STREQ:
|
|
return strcmp(opnd1, opnd2) == 0;
|
|
case STRNE:
|
|
return strcmp(opnd1, opnd2) != 0;
|
|
case STRLT:
|
|
return strcmp(opnd1, opnd2) < 0;
|
|
case STRGT:
|
|
return strcmp(opnd1, opnd2) > 0;
|
|
case INTEQ:
|
|
return intcmp(opnd1, opnd2) == 0;
|
|
case INTNE:
|
|
return intcmp(opnd1, opnd2) != 0;
|
|
case INTGE:
|
|
return intcmp(opnd1, opnd2) >= 0;
|
|
case INTGT:
|
|
return intcmp(opnd1, opnd2) > 0;
|
|
case INTLE:
|
|
return intcmp(opnd1, opnd2) <= 0;
|
|
case INTLT:
|
|
return intcmp(opnd1, opnd2) < 0;
|
|
case FILNT:
|
|
return newerf (opnd1, opnd2);
|
|
case FILOT:
|
|
return olderf (opnd1, opnd2);
|
|
case FILEQ:
|
|
return equalf (opnd1, opnd2);
|
|
default:
|
|
abort();
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
|
|
static int
|
|
filstat(char *nm, enum token mode)
|
|
{
|
|
struct stat s;
|
|
|
|
if (mode == FILSYM ? lstat(nm, &s) : stat(nm, &s))
|
|
return 0;
|
|
|
|
switch (mode) {
|
|
case FILRD:
|
|
return (eaccess(nm, R_OK) == 0);
|
|
case FILWR:
|
|
return (eaccess(nm, W_OK) == 0);
|
|
case FILEX:
|
|
/* XXX work around eaccess(2) false positives for superuser */
|
|
if (eaccess(nm, X_OK) != 0)
|
|
return 0;
|
|
if (S_ISDIR(s.st_mode) || geteuid() != 0)
|
|
return 1;
|
|
return (s.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)) != 0;
|
|
case FILEXIST:
|
|
return (eaccess(nm, F_OK) == 0);
|
|
case FILREG:
|
|
return S_ISREG(s.st_mode);
|
|
case FILDIR:
|
|
return S_ISDIR(s.st_mode);
|
|
case FILCDEV:
|
|
return S_ISCHR(s.st_mode);
|
|
case FILBDEV:
|
|
return S_ISBLK(s.st_mode);
|
|
case FILFIFO:
|
|
return S_ISFIFO(s.st_mode);
|
|
case FILSOCK:
|
|
return S_ISSOCK(s.st_mode);
|
|
case FILSYM:
|
|
return S_ISLNK(s.st_mode);
|
|
case FILSUID:
|
|
return (s.st_mode & S_ISUID) != 0;
|
|
case FILSGID:
|
|
return (s.st_mode & S_ISGID) != 0;
|
|
case FILSTCK:
|
|
return (s.st_mode & S_ISVTX) != 0;
|
|
case FILGZ:
|
|
return s.st_size > (off_t)0;
|
|
case FILUID:
|
|
return s.st_uid == geteuid();
|
|
case FILGID:
|
|
return s.st_gid == getegid();
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static enum token
|
|
t_lex(char *s)
|
|
{
|
|
struct t_op const *op = ops;
|
|
|
|
if (s == 0) {
|
|
t_wp_op = NULL;
|
|
return EOI;
|
|
}
|
|
while (op->op_text) {
|
|
if (strcmp(s, op->op_text) == 0) {
|
|
if ((op->op_type == UNOP && isoperand()) ||
|
|
(op->op_num == LPAREN && *(t_wp+1) == 0))
|
|
break;
|
|
t_wp_op = op;
|
|
return op->op_num;
|
|
}
|
|
op++;
|
|
}
|
|
t_wp_op = NULL;
|
|
return OPERAND;
|
|
}
|
|
|
|
static int
|
|
isoperand(void)
|
|
{
|
|
struct t_op const *op = ops;
|
|
char *s;
|
|
char *t;
|
|
|
|
if ((s = *(t_wp+1)) == 0)
|
|
return 1;
|
|
if ((t = *(t_wp+2)) == 0)
|
|
return 0;
|
|
while (op->op_text) {
|
|
if (strcmp(s, op->op_text) == 0)
|
|
return op->op_type == BINOP &&
|
|
(t[0] != ')' || t[1] != '\0');
|
|
op++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* atoi with error detection */
|
|
static int
|
|
getn(const char *s)
|
|
{
|
|
char *p;
|
|
long r;
|
|
|
|
errno = 0;
|
|
r = strtol(s, &p, 10);
|
|
|
|
if (s == p)
|
|
error("%s: bad number", s);
|
|
|
|
if (errno != 0)
|
|
error((errno == EINVAL) ? "%s: bad number" :
|
|
"%s: out of range", s);
|
|
|
|
while (isspace((unsigned char)*p))
|
|
p++;
|
|
|
|
if (*p)
|
|
error("%s: bad number", s);
|
|
|
|
return (int) r;
|
|
}
|
|
|
|
/* atoi with error detection and 64 bit range */
|
|
static intmax_t
|
|
getq(const char *s)
|
|
{
|
|
char *p;
|
|
intmax_t r;
|
|
|
|
errno = 0;
|
|
r = strtoimax(s, &p, 10);
|
|
|
|
if (s == p)
|
|
error("%s: bad number", s);
|
|
|
|
if (errno != 0)
|
|
error((errno == EINVAL) ? "%s: bad number" :
|
|
"%s: out of range", s);
|
|
|
|
while (isspace((unsigned char)*p))
|
|
p++;
|
|
|
|
if (*p)
|
|
error("%s: bad number", s);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int
|
|
intcmp (const char *s1, const char *s2)
|
|
{
|
|
intmax_t q1, q2;
|
|
|
|
|
|
q1 = getq(s1);
|
|
q2 = getq(s2);
|
|
|
|
if (q1 > q2)
|
|
return 1;
|
|
|
|
if (q1 < q2)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
newerf (const char *f1, const char *f2)
|
|
{
|
|
struct stat b1, b2;
|
|
|
|
if (stat(f1, &b1) != 0 || stat(f2, &b2) != 0)
|
|
return 0;
|
|
|
|
if (b1.st_mtimespec.tv_sec > b2.st_mtimespec.tv_sec)
|
|
return 1;
|
|
if (b1.st_mtimespec.tv_sec < b2.st_mtimespec.tv_sec)
|
|
return 0;
|
|
|
|
return (b1.st_mtimespec.tv_nsec > b2.st_mtimespec.tv_nsec);
|
|
}
|
|
|
|
static int
|
|
olderf (const char *f1, const char *f2)
|
|
{
|
|
return (newerf(f2, f1));
|
|
}
|
|
|
|
static int
|
|
equalf (const char *f1, const char *f2)
|
|
{
|
|
struct stat b1, b2;
|
|
|
|
return (stat (f1, &b1) == 0 &&
|
|
stat (f2, &b2) == 0 &&
|
|
b1.st_dev == b2.st_dev &&
|
|
b1.st_ino == b2.st_ino);
|
|
}
|