1 /* $NetBSD: test.c,v 1.21 1999/04/05 09:48:38 kleink Exp $ */
4 * test(1); version 7-like -- author Erik Baalbergen
5 * modified by Eric Gisin to be used as built-in.
6 * modified by Arnold Robbins to add SVR3 compatibility
7 * (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket).
8 * modified by J.T. Conklin for NetBSD.
10 * This program is in the Public Domain.
12 * $FreeBSD: src/bin/test/test.c,v 1.29.2.7 2002/09/10 09:10:57 maxim Exp $
13 * $DragonFly: src/bin/test/test.c,v 1.4 2003/09/28 14:39:15 hmp Exp $
16 #include <sys/types.h>
31 #include "bltin/bltin.h"
33 static void error(const char *, ...) __attribute__((__noreturn__));
37 error(const char *msg, ...)
48 msg = va_arg(ap, const char *);
58 /* test(1) accepts the following grammar:
59 oexpr ::= aexpr | aexpr "-o" oexpr ;
60 aexpr ::= nexpr | nexpr "-a" aexpr ;
61 nexpr ::= primary | "!" primary
62 primary ::= unary-operator operand
63 | operand binary-operator operand
67 unary-operator ::= "-r"|"-w"|"-x"|"-f"|"-d"|"-c"|"-b"|"-p"|
68 "-u"|"-g"|"-k"|"-s"|"-t"|"-z"|"-n"|"-o"|"-O"|"-G"|"-L"|"-S";
70 binary-operator ::= "="|"!="|"-eq"|"-ne"|"-ge"|"-gt"|"-le"|"-lt"|
72 operand ::= <any legal UNIX file name>
128 short op_num, op_type;
133 {"-e", FILEXIST,UNOP},
134 {"-f", FILREG, UNOP},
135 {"-d", FILDIR, UNOP},
136 {"-c", FILCDEV,UNOP},
137 {"-b", FILBDEV,UNOP},
138 {"-p", FILFIFO,UNOP},
139 {"-u", FILSUID,UNOP},
140 {"-g", FILSGID,UNOP},
141 {"-k", FILSTCK,UNOP},
146 {"-h", FILSYM, UNOP}, /* for backwards compat */
147 {"-O", FILUID, UNOP},
148 {"-G", FILGID, UNOP},
149 {"-L", FILSYM, UNOP},
150 {"-S", FILSOCK,UNOP},
152 {"!=", STRNE, BINOP},
155 {"-eq", INTEQ, BINOP},
156 {"-ne", INTNE, BINOP},
157 {"-ge", INTGE, BINOP},
158 {"-gt", INTGT, BINOP},
159 {"-le", INTLE, BINOP},
160 {"-lt", INTLT, BINOP},
161 {"-nt", FILNT, BINOP},
162 {"-ot", FILOT, BINOP},
163 {"-ef", FILEQ, BINOP},
165 {"-a", BAND, BBINOP},
167 {"(", LPAREN, PAREN},
168 {")", RPAREN, PAREN},
172 struct t_op const *t_wp_op;
176 static int aexpr (enum token);
177 static int binop (void);
178 static int equalf (const char *, const char *);
179 static int filstat (char *, enum token);
180 static int getn (const char *);
181 static quad_t getq (const char *);
182 static int intcmp (const char *, const char *);
183 static int isoperand (void);
184 static int newerf (const char *, const char *);
185 static int nexpr (enum token);
186 static int oexpr (enum token);
187 static int olderf (const char *, const char *);
188 static int primary (enum token);
189 static void syntax (const char *, const char *);
190 static enum token t_lex (char *);
193 main(int argc, char **argv)
200 if ((p = rindex(argv[0], '/')) == NULL)
204 if (strcmp(p, "[") == 0) {
205 if (strcmp(argv[--argc], "]") != 0)
210 /* no expression => false */
214 /* XXX work around the absence of an eaccess(2) syscall */
219 (void)setregid(egid, gid);
220 (void)setreuid(euid, uid);
224 res = !oexpr(t_lex(*t_wp));
227 syntax(*t_wp, "unexpected operator");
228 (void)setregid(gid, egid);
229 (void)setreuid(uid, euid);
235 syntax(const char *op, const char *msg)
239 error("%s: %s", op, msg);
250 if (t_lex(nargc > 0 ? (--nargc, *++t_wp) : NULL) == BOR)
251 return oexpr(t_lex(nargc > 0 ? (--nargc, *++t_wp) : NULL)) ||
264 if (t_lex(nargc > 0 ? (--nargc, *++t_wp) : NULL) == BAND)
265 return aexpr(t_lex(nargc > 0 ? (--nargc, *++t_wp) : NULL)) &&
276 return !nexpr(t_lex(nargc > 0 ? (--nargc, *++t_wp) : NULL));
281 primary(enum token n)
287 return 0; /* missing expression */
289 if ((nn = t_lex(nargc > 0 ? (--nargc, *++t_wp) : NULL)) ==
291 return 0; /* missing expression */
293 if (t_lex(nargc > 0 ? (--nargc, *++t_wp) : NULL) != RPAREN)
294 syntax(NULL, "closing paren expected");
297 if (t_wp_op && t_wp_op->op_type == UNOP) {
298 /* unary expression */
300 syntax(t_wp_op->op_text, "argument expected");
303 return strlen(*++t_wp) == 0;
305 return strlen(*++t_wp) != 0;
307 return isatty(getn(*++t_wp));
309 return filstat(*++t_wp, n);
313 if (t_lex(nargc > 0 ? t_wp[1] : NULL), t_wp_op && t_wp_op->op_type ==
318 return strlen(*t_wp) > 0;
324 const char *opnd1, *opnd2;
325 struct t_op const *op;
328 (void) t_lex(nargc > 0 ? (--nargc, *++t_wp) : NULL);
331 if ((opnd2 = nargc > 0 ? (--nargc, *++t_wp) : NULL) == NULL)
332 syntax(op->op_text, "argument expected");
334 switch (op->op_num) {
336 return strcmp(opnd1, opnd2) == 0;
338 return strcmp(opnd1, opnd2) != 0;
340 return strcmp(opnd1, opnd2) < 0;
342 return strcmp(opnd1, opnd2) > 0;
344 return intcmp(opnd1, opnd2) == 0;
346 return intcmp(opnd1, opnd2) != 0;
348 return intcmp(opnd1, opnd2) >= 0;
350 return intcmp(opnd1, opnd2) > 0;
352 return intcmp(opnd1, opnd2) <= 0;
354 return intcmp(opnd1, opnd2) < 0;
356 return newerf (opnd1, opnd2);
358 return olderf (opnd1, opnd2);
360 return equalf (opnd1, opnd2);
368 filstat(char *nm, enum token mode)
372 if (mode == FILSYM ? lstat(nm, &s) : stat(nm, &s))
377 return access(nm, R_OK) == 0;
379 return access(nm, W_OK) == 0;
381 /* XXX work around access(2) false positives for superuser */
382 if (access(nm, X_OK) != 0)
384 if (S_ISDIR(s.st_mode) || getuid() != 0)
386 return (s.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)) != 0;
388 return access(nm, F_OK) == 0;
390 return S_ISREG(s.st_mode);
392 return S_ISDIR(s.st_mode);
394 return S_ISCHR(s.st_mode);
396 return S_ISBLK(s.st_mode);
398 return S_ISFIFO(s.st_mode);
400 return S_ISSOCK(s.st_mode);
402 return S_ISLNK(s.st_mode);
404 return (s.st_mode & S_ISUID) != 0;
406 return (s.st_mode & S_ISGID) != 0;
408 return (s.st_mode & S_ISVTX) != 0;
410 return s.st_size > (off_t)0;
412 return s.st_uid == geteuid();
414 return s.st_gid == getegid();
423 struct t_op const *op = ops;
429 while (op->op_text) {
430 if (strcmp(s, op->op_text) == 0) {
431 if ((op->op_type == UNOP && isoperand()) ||
432 (op->op_num == LPAREN && nargc == 1))
446 struct t_op const *op = ops;
456 while (op->op_text) {
457 if (strcmp(s, op->op_text) == 0)
458 return op->op_type == BINOP &&
459 (t[0] != ')' || t[1] != '\0');
465 /* atoi with error detection */
473 r = strtol(s, &p, 10);
476 error((errno == EINVAL) ? "%s: bad number" :
477 "%s: out of range", s);
479 while (isspace((unsigned char)*p))
483 error("%s: bad number", s);
488 /* atoi with error detection and 64 bit range */
496 r = strtoq(s, &p, 10);
499 error((errno == EINVAL) ? "%s: bad number" :
500 "%s: out of range", s);
502 while (isspace((unsigned char)*p))
506 error("%s: bad number", s);
512 intcmp (const char *s1, const char *s2)
530 newerf (const char *f1, const char *f2)
534 if (stat(f1, &b1) != 0 || stat(f2, &b2) != 0)
537 if (b1.st_mtimespec.tv_sec > b2.st_mtimespec.tv_sec)
539 if (b1.st_mtimespec.tv_sec < b2.st_mtimespec.tv_sec)
542 return (b1.st_mtimespec.tv_nsec > b2.st_mtimespec.tv_nsec);
546 olderf (const char *f1, const char *f2)
548 return (newerf(f2, f1));
552 equalf (const char *f1, const char *f2)
556 return (stat (f1, &b1) == 0 &&
557 stat (f2, &b2) == 0 &&
558 b1.st_dev == b2.st_dev &&
559 b1.st_ino == b2.st_ino);