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gohigh
2024-02-19 00:21:52 -05:00
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/*
* GNU test program (ksb and mjb)
*
* Modified to run with the GNU shell Apr 25, 1988 by bfox.
*
*??? -G file is owned by same gid; the effective gid is checked
* Chet Ramey, CWRU 3/23/89
*
* Fixed a BSD dependency (_doprnt()) in the port to AIX 2.2
* Chet Ramey, CWRU 5/3/89
*/
/* Copyright (C) 1987,1989 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 1, or (at your option) any later
version.
Bash is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with Bash; see the file COPYING. If not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <sys/types.h>
#include <stdio.h>
#include <varargs.h>
#ifndef SONY
#include <fcntl.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/file.h>
#ifndef R_OK
#define R_OK 4
#define W_OK 2
#define X_OK 1
#define F_OK 0
#endif
#ifndef lint
static char *rcsid = "$Id: gtest.c,v 1.10 88/07/02 13:34:45 afb Exp Locker: afb $";
#endif
/* The following few defines control the truth and false output of each stage.
TRUE and FALSE are what we use to compute the final output value.
SHELL_BOOLEAN is the form which returns truth or falseness in shell terms.
TRUTH_OR is how to do logical or with TRUE and FALSE.
TRUTH_AND is how to do logical and with TRUE and FALSE..
Default is TRUE = 1, FALSE = 0, TRUTH_OR = a | b, TRUTH_AND = a & b,
SHELL_BOOLEAN = (!value). */
#define TRUE 1
#define FALSE 0
#define SHELL_BOOLEAN(value) (!(value))
#define TRUTH_OR(a, b) ((a) | (b))
#define TRUTH_AND(a, b) ((a) & (b))
/* Define STANDALONE to get the /bin/test version. Otherwise, we are
making this for the shell. */
/* #define STANDALONE */
#ifdef STANDALONE
#define test_exit(val) exit (val)
#else
#include <setjmp.h>
jmp_buf test_exit_buf;
int test_error_return = 0;
#define test_exit(val) test_error_return = val, longjmp (test_exit_buf, 1)
#endif /* STANDALONE */
#ifdef SYSV
int sys_v = 1;
#else
int sys_v = 0;
#endif
static int pos; /* position in list */
static int argc; /* number of args from command line */
static char **argv; /* the argument list */
static void
test_syntax_error (format, arg)
char *format, *arg;
{
(void) fprintf (stderr, "%s: ", argv[0]);
(void) fprintf (stderr, format, arg);
test_exit (SHELL_BOOLEAN (FALSE));
}
test_io_error (name)
char *name;
{
extern int errno;
int old_errno = errno;
fprintf (stderr, "%s: ", argv[0]);
errno = old_errno;
perror (name);
test_exit (SHELL_BOOLEAN (FALSE));
}
/*
* advance - increment our position in the argument list. Check that
* we're not past the end of the argument list. This check is
* supressed if the argument is FALSE. made a macro for efficiency.
*/
#ifndef lint
#define advance(f) (++pos, f && (pos < argc ? 0 : beyond()))
#endif
#if !defined(advance)
static int
advance (f)
int f;
{
++pos;
if (f && pos >= argc)
beyond ();
}
#endif
#define unary_advance() (advance (1),++pos)
/*
* beyond - call when we're beyond the end of the argument list (an
* error condition)
*/
static int
beyond ()
{
test_syntax_error ("argument expected\n", (char *)NULL);
}
/*
* int_expt_err - when an integer argument was expected, but something else
* was found.
*/
static void
int_expt_err (pch)
char *pch;
{
test_syntax_error ("integer expression expected %s\n", pch);
}
/*
* isint - is the argument whose position in the argument vector is 'm' an
* integer? Convert it for me too, returning it's value in 'pl'.
*/
static int
isint (m, pl)
int m;
long *pl;
{
extern long atol ();
register char *pch;
pch = argv[m];
/* Skip leading whitespace characters. */
while (*pch == '\t' || *pch == ' ')
pch++;
/* accept negative numbers but not '-' alone */
if ('-' == *pch)
if ('\000' == *++pch)
return 0;
while ('\000' != *pch)
{
switch (*pch)
{
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
break;
default:
return (FALSE);
}
++pch;
}
*pl = atol (argv[m]);
return (TRUE);
}
/*
* age_of - find the age of the given file. Return YES or NO depending
* on whether the file exists, and if it does, fill in the age with
* the modify time.
*/
static int
age_of (posit, age)
int posit;
long *age;
{
struct stat stat_buf;
if (stat (argv[posit], &stat_buf) < 0)
{
return (FALSE);
}
*age = stat_buf.st_mtime;
return (TRUE);
}
/*
* term - parse a term and return 1 or 0 depending on whether the term
* evaluates to true or false, respectively.
*
* term ::=
* '-'('h'|'d'|'f'|'r'|'s'|'w'|'c'|'b'|'p'|'u'|'g'|'k') filename
* '-'('L'|'x') filename
* '-t' [ int ]
* '-'('z'|'n') string
* string
* string ('!='|'=') string
* <int> '-'(eq|ne|le|lt|ge|gt) <int>
* file '-'(nt|ot|ef) file
* '(' <expr> ')'
* int ::=
* '-l' string
* positive and negative integers
*/
static int
term ()
{
int expr ();
auto struct stat stat_buf, stat_spare;
auto long int l, r;
auto int l_is_l, r_is_l; /* are the left and right integer
* expressions of the form '-l string'?
*/
auto int value, fd;
if (pos >= argc)
beyond ();
/* Deal with leading "not". */
if (pos < argc && '!' == argv[pos][0] && '\000' == argv[pos][1])
{
advance (1);
/* This has to be rewritten to handle the TRUTH and FALSE stuff. */
return (!term ());
}
if ('(' == argv[pos][0] && '\000' == argv[pos][1])
{
advance (1);
value = expr ();
if (')' != argv[pos][0] || '\000' != argv[pos][1])
test_syntax_error ("argument expected, found %s\n", argv[pos]);
advance (0);
return (TRUE == (value));
}
/* are there enough arguments left that this could be dyadic? */
if (pos + 3 <= argc)
{
register int op;
if ('-' == argv[pos][0] && 'l' == argv[pos][1] &&
'\000' == argv[pos][2])
{
l_is_l = 1;
op = pos + 2;
advance (0);
}
else
{
l_is_l = 0;
op = pos + 1;
}
if ('-' == argv[op + 1][0] && 'l' == argv[op + 1][1]
&& '\000' == argv[op + 1][2])
{
r_is_l = 1;
advance (0);
}
else
r_is_l = 0;
if ('-' == argv[op][0])
{
/* check for eq, nt, and stuff */
switch (argv[op][1])
{
default:
break;
case 'l':
if ('t' == argv[op][2] && '\000' == argv[op][3])
{
/* lt */
if (l_is_l)
l = strlen (argv[op - 1]);
else
{
if (!isint (op - 1, &l))
int_expt_err ("before -lt");
}
if (r_is_l)
r = strlen (argv[op + 2]);
else
{
if (!isint (op + 1, &r))
int_expt_err ("after -lt");
}
pos += 3;
return (TRUE == (l < r));
}
if ('e' == argv[op][2] && '\000' == argv[op][3])
{
/* le */
if (l_is_l)
l = strlen (argv[op - 1]);
else
{
if (!isint (op - 1, &l))
int_expt_err ("before -le");
}
if (r_is_l)
r = strlen (argv[op + 2]);
else
{
if (!isint (op + 1, &r))
int_expt_err ("after -le");
}
pos += 3;
return (TRUE == (l <= r));
}
break;
case 'g':
if ('t' == argv[op][2] && '\000' == argv[op][3])
{
/* gt integer greater than */
if (l_is_l)
l = strlen (argv[op - 1]);
else
{
if (!isint (op - 1, &l))
int_expt_err ("before -gt");
}
if (r_is_l)
r = strlen (argv[op + 2]);
else
{
if (!isint (op + 1, &r))
int_expt_err ("after -gt");
}
pos += 3;
return (TRUE == (l > r));
}
if ('e' == argv[op][2] && '\000' == argv[op][3])
{
/* ge - integer greater than or equal to */
if (l_is_l)
l = strlen (argv[op - 1]);
else
{
if (!isint (op - 1, &l))
int_expt_err ("before -ge");
}
if (r_is_l)
r = strlen (argv[op + 2]);
else
{
if (!isint (op + 1, &r))
int_expt_err ("after -ge");
}
pos += 3;
return (TRUE == (l >= r));
}
break;
case 'n':
if ('t' == argv[op][2] && '\000' == argv[op][3])
{
/* nt - newer than */
pos += 3;
if (l_is_l || r_is_l)
test_syntax_error ("-nt does not accept -l\n",
(char *)NULL);
if (age_of (op - 1, &l) && age_of (op + 1, &r))
return (TRUE == (l > r));
else
return (FALSE);
}
if ('e' == argv[op][2] && '\000' == argv[op][3])
{
/* ne - integer not equal */
if (l_is_l)
l = strlen (argv[op - 1]);
else
{
if (!isint (op - 1, &l))
int_expt_err ("before -ne");
}
if (r_is_l)
r = strlen (argv[op + 2]);
else
{
if (!isint (op + 1, &r))
int_expt_err ("after -ne");
}
pos += 3;
return (TRUE == (l != r));
}
break;
case 'e':
if ('q' == argv[op][2] && '\000' == argv[op][3])
{
/* eq - integer equal */
if (l_is_l)
l = strlen (argv[op - 1]);
else
{
if (!isint (op - 1, &l))
int_expt_err ("before -eq");
}
if (r_is_l)
r = strlen (argv[op + 2]);
else
{
if (!isint (op + 1, &r))
int_expt_err ("after -eq");
}
pos += 3;
return (TRUE == (l == r));
}
if ('f' == argv[op][2] && '\000' == argv[op][3])
{
/* ef - hard link? */
pos += 3;
if (l_is_l || r_is_l)
test_syntax_error ("-ef does not accept -l\n",
(char *)NULL);
if (stat (argv[op - 1], &stat_buf) < 0)
return (FALSE);
if (stat (argv[op + 1], &stat_spare) < 0)
return (FALSE);
return (TRUE ==
(stat_buf.st_dev == stat_spare.st_dev &&
stat_buf.st_ino == stat_spare.st_ino));
}
break;
case 'o':
if ('t' == argv[op][2] && '\000' == argv[op][3])
{
/* ot - older than */
pos += 3;
if (l_is_l || r_is_l)
test_syntax_error ("-nt does not accept -l\n",
(char *)NULL);
if (age_of (op - 1, &l) && age_of (op + 1, &r))
return (TRUE == (l < r));
return (FALSE);
}
break;
}
}
if ('=' == argv[op][0] && '\000' == argv[op][1])
{
value = (0 == strcmp (argv[pos], argv[pos + 2]));
pos += 3;
return (TRUE == value);
}
if ('!' == argv[op][0] && '=' == argv[op][1] && '\000' == argv[op][2])
{
value = 0 != strcmp (argv[pos], argv[pos + 2]);
pos += 3;
return (TRUE == value);
}
}
/* Might be a switch type argument */
if ('-' == argv[pos][0] && '\000' == argv[pos][2] /* && pos < argc-1 */ )
{
switch (argv[pos][1])
{
default:
break;
/* All of the following unary operators use unary_advance (), which
checks to make sure that there is an argument, and then advances
pos right past it. This means that pos - 1 is the location of the
argument. */
case 'r': /* file is readable? */
unary_advance ();
value = -1 != access (argv[pos - 1], R_OK);
return (TRUE == value);
case 'w': /* File is writeable? */
unary_advance ();
value = -1 != access (argv[pos - 1], W_OK);
return (TRUE == value);
case 'x': /* File is executable? */
unary_advance ();
value = -1 != access (argv[pos - 1], X_OK);
return (TRUE == value);
case 'O': /* File is owned by you? */
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (geteuid () == stat_buf.st_uid));
case 'f': /* File is a file? */
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
/*
* Under SYSV, -f is true if the given file exists
* and is a regular file. Other places, this checks
* to see if the given file is not a directory.
*/
if (sys_v)
return (TRUE == ((S_IFREG == (stat_buf.st_mode & S_IFMT)) ||
(0 == (stat_buf.st_mode & S_IFMT))));
else
return (TRUE == (S_IFDIR != (stat_buf.st_mode & S_IFMT)));
case 'd': /* File is a directory? */
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (S_IFDIR == (stat_buf.st_mode & S_IFMT)));
case 's': /* File has something in it? */
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (stat_buf.st_size > (off_t) 0));
#ifdef S_IFSOCK
case 'S': /* File is a socket? */
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (S_IFSOCK == (stat_buf.st_mode & S_IFMT)));
#endif
case 'c': /* File is character special? */
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (S_IFCHR == (stat_buf.st_mode & S_IFMT)));
case 'b': /* File is block special? */
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (S_IFBLK == (stat_buf.st_mode & S_IFMT)));
case 'p': /* File is a named pipe? */
unary_advance ();
#ifndef S_IFIFO
return (FALSE);
#else
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (S_IFIFO == (stat_buf.st_mode & S_IFMT)));
#endif /* S_IFIFO */
case 'L': /* Same as -h */
/*FALLTHROUGH*/
case 'h': /* File is a symbolic link? */
unary_advance ();
#ifndef S_IFLNK
return (FALSE);
#else
if (lstat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (S_IFLNK == (stat_buf.st_mode & S_IFMT)));
#endif /* S_IFLNK */
case 'u': /* File is setuid? */
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (0 != (stat_buf.st_mode & S_ISUID)));
case 'g': /* File is setgid? */
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (0 != (stat_buf.st_mode & S_ISGID)));
case 'k': /* File has sticky bit set? */
#ifndef S_ISVTX
return(FALSE);
#else
unary_advance ();
if (stat (argv[pos - 1], &stat_buf) < 0)
return (FALSE);
return (TRUE == (0 != (stat_buf.st_mode & S_ISVTX)));
#endif
case 't': /* File (fd) is a terminal? (fd) defaults to stdout. */
advance (0);
if (pos < argc && isint (pos, &r))
{
advance (0);
return (TRUE == (isatty ((int) r)));
}
return (TRUE == (isatty (1)));
case 'n': /* True if arg has some length. */
unary_advance ();
return (TRUE == (0 != strlen (argv[pos - 1])));
break;
case 'z': /* True if arg has no length. */
unary_advance ();
return (TRUE == (0 == strlen (argv[pos - 1])));
}
}
value = 0 != strlen (argv[pos]);
advance (0);
return value;
}
/*
* and:
* and '-a' term
* term
*/
static int
and ()
{
auto int value;
value = term ();
while (pos < argc && '-' == argv[pos][0] && 'a' == argv[pos][1] && '\000' == argv[pos][2])
{
advance (0);
value = TRUTH_AND (value, term ());
}
return (TRUE == value);
}
/*
* or:
* or '-o' and
* and
*/
static int
or ()
{
auto int value;
value = and ();
while (pos < argc && '-' == argv[pos][0] && 'o' == argv[pos][1] && '\000' == argv[pos][2])
{
advance (0);
value = TRUTH_OR (value, and ());
}
return (TRUE == value);
}
/*
* expr:
* or
*/
int
expr ()
{
auto int value;
if (pos >= argc)
beyond ();
value = FALSE;
return value ^ or (); /* Same with this. */
}
/*
* [:
* '[' expr ']'
* test:
* test expr
*/
int
#ifdef STANDALONE
main (margc, margv)
#else
test_command (margc, margv)
#endif /* STANDALONE */
int margc;
char **margv;
{
auto int value;
int expr ();
#ifndef STANDALONE
int code = setjmp (test_exit_buf);
if (code)
return (test_error_return);
#endif /* STANDALONE */
argv = margv;
if (margv[0] && strcmp (margv[0], "[") == 0)
{
--margc;
if (margc < 2)
test_exit (SHELL_BOOLEAN (FALSE));
if (margv[margc] && strcmp (margv[margc], "]") != 0)
test_syntax_error ("missing `]'\n", (char *)NULL);
}
argc = margc;
pos = 1;
if (pos >= argc)
test_exit (SHELL_BOOLEAN (FALSE));
value = expr ();
if (pos != argc)
test_syntax_error ("too many arguments\n", (char *)NULL);
test_exit (SHELL_BOOLEAN (value));
}