initial import of NetBSD tree

1 files changed, 495 insertions, 0 deletions

diff --git a/bin/test/test.c b/bin/test/test.c
new file mode 100644
index 00000000000..844c0f0db16
--- /dev/null
+++ b/bin/test/test.c
@@ -0,0 +1,495 @@
+/*	$NetBSD: test.c,v 1.15 1995/03/21 07:04:06 cgd 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.
+ */
+
+#ifndef lint
+static char rcsid[] = "$NetBSD: test.c,v 1.15 1995/03/21 07:04:06 cgd Exp $";
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <err.h>
+
+/* 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}
+};
+
+char **t_wp;
+struct t_op const *t_wp_op;
+
+static enum token t_lex();
+static int oexpr();
+static int aexpr();
+static int nexpr();
+static int binop();
+static int primary();
+static int filstat();
+static int getn();
+static int newerf();
+static int olderf();
+static int equalf();
+static void syntax();
+
+int
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	int	res;
+
+	if (strcmp(argv[0], "[") == 0) {
+		if (strcmp(argv[--argc], "]"))
+			errx(2, "missing ]");
+		argv[argc] = NULL;
+	}
+
+	/* Implement special cases from POSIX.2, section 4.62.4 */
+	switch (argc) {
+	case 1:
+		return 1;
+	case 2:
+		return (*argv[1] == '\0');
+	case 3:
+		if (argv[1][0] == '!' && argv[1][1] == '\0') {
+			return !(*argv[2] == '\0');
+		}
+		break;
+	case 4:
+		if (argv[1][0] != '!' || argv[1][1] != '\0') {
+			if (t_lex(argv[2]), 
+			    t_wp_op && t_wp_op->op_type == BINOP) {
+				t_wp = &argv[1];
+				return (binop() == 0);
+			}
+		}
+		break;
+	case 5:
+		if (argv[1][0] == '!' && argv[1][1] == '\0') {
+			if (t_lex(argv[3]), 
+			    t_wp_op && t_wp_op->op_type == BINOP) {
+				t_wp = &argv[2];
+				return !(binop() == 0);
+			}
+		}
+		break;
+	}
+
+	t_wp = &argv[1];
+	res = !oexpr(t_lex(*t_wp));
+
+	if (*t_wp != NULL && *++t_wp != NULL)
+		syntax(*t_wp, "unknown operand");
+
+	return res;
+}
+
+static void
+syntax(op, msg)
+	char	*op;
+	char	*msg;
+{
+	if (op && *op)
+		errx(2, "%s: %s", op, msg);
+	else
+		errx(2, "%s", msg);
+}
+
+static int
+oexpr(n)
+	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(n)
+	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(n)
+	enum token n;			/* token */
+{
+	if (n == UNOT)
+		return !nexpr(t_lex(*++t_wp));
+	return primary(n);
+}
+
+static int
+primary(n)
+	enum token n;
+{
+	int res;
+
+	if (n == EOI)
+		syntax(NULL, "argument expected");
+	if (n == LPAREN) {
+		res = oexpr(t_lex(*++t_wp));
+		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()
+{
+	register 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) == (char *)0)
+		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 getn(opnd1) == getn(opnd2);
+	case INTNE:
+		return getn(opnd1) != getn(opnd2);
+	case INTGE:
+		return getn(opnd1) >= getn(opnd2);
+	case INTGT:
+		return getn(opnd1) > getn(opnd2);
+	case INTLE:
+		return getn(opnd1) <= getn(opnd2);
+	case INTLT:
+		return getn(opnd1) < getn(opnd2);
+	case FILNT:
+		return newerf (opnd1, opnd2);
+	case FILOT:
+		return olderf (opnd1, opnd2);
+	case FILEQ:
+		return equalf (opnd1, opnd2);
+	}
+	/* NOTREACHED */
+}
+
+static int
+filstat(nm, mode)
+	char *nm;
+	enum token mode;
+{
+	struct stat s;
+	int i;
+
+	if (mode == FILSYM) {
+#ifdef S_IFLNK
+		if (lstat(nm, &s) == 0) {
+			i = S_IFLNK;
+			goto filetype;
+		}
+#endif
+		return 0;
+	}
+
+	if (stat(nm, &s) != 0) 
+		return 0;
+
+	switch (mode) {
+	case FILRD:
+		return access(nm, R_OK) == 0;
+	case FILWR:
+		return access(nm, W_OK) == 0;
+	case FILEX:
+		return access(nm, X_OK) == 0;
+	case FILEXIST:
+		return access(nm, F_OK) == 0;
+	case FILREG:
+		i = S_IFREG;
+		goto filetype;
+	case FILDIR:
+		i = S_IFDIR;
+		goto filetype;
+	case FILCDEV:
+		i = S_IFCHR;
+		goto filetype;
+	case FILBDEV:
+		i = S_IFBLK;
+		goto filetype;
+	case FILFIFO:
+#ifdef S_IFIFO
+		i = S_IFIFO;
+		goto filetype;
+#else
+		return 0;
+#endif
+	case FILSOCK:
+#ifdef S_IFSOCK
+		i = S_IFSOCK;
+		goto filetype;
+#else
+		return 0;
+#endif
+	case FILSUID:
+		i = S_ISUID;
+		goto filebit;
+	case FILSGID:
+		i = S_ISGID;
+		goto filebit;
+	case FILSTCK:
+		i = S_ISVTX;
+		goto filebit;
+	case FILGZ:
+		return s.st_size > 0L;
+	case FILUID:
+		return s.st_uid == geteuid();
+	case FILGID:
+		return s.st_gid == getegid();
+	default:
+		return 1;
+	}
+
+filetype:
+	return ((s.st_mode & S_IFMT) == i);
+
+filebit:
+	return ((s.st_mode & i) != 0);
+}
+
+static enum token
+t_lex(s)
+	register char *s;
+{
+	register struct t_op const *op = ops;
+
+	if (s == 0) {
+		t_wp_op = (struct t_op *)0;
+		return EOI;
+	}
+	while (op->op_text) {
+		if (strcmp(s, op->op_text) == 0) {
+			t_wp_op = op;
+			return op->op_num;
+		}
+		op++;
+	}
+	t_wp_op = (struct t_op *)0;
+	return OPERAND;
+}
+
+/* atoi with error detection */
+static int
+getn(s)
+	char *s;
+{
+	char *p;
+	long r;
+
+	errno = 0;
+	r = strtol(s, &p, 10);
+
+	if (errno != 0)
+	  errx(2, "%s: out of range", s);
+
+	while (isspace(*p))
+	  p++;
+	
+	if (*p)
+	  errx(2, "%s: bad number", s);
+
+	return (int) r;
+}
+
+static int
+newerf (f1, f2)
+char *f1, *f2;
+{
+	struct stat b1, b2;
+
+	return (stat (f1, &b1) == 0 &&
+		stat (f2, &b2) == 0 &&
+		b1.st_mtime > b2.st_mtime);
+}
+
+static int
+olderf (f1, f2)
+char *f1, *f2;
+{
+	struct stat b1, b2;
+
+	return (stat (f1, &b1) == 0 &&
+		stat (f2, &b2) == 0 &&
+		b1.st_mtime < b2.st_mtime);
+}
+
+static int
+equalf (f1, f2)
+char *f1, *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);
+}