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