[821] | 1 | /* vi: set sw=4 ts=4: */
|
---|
| 2 | /*
|
---|
| 3 | * test implementation for busybox
|
---|
| 4 | *
|
---|
| 5 | * Copyright (c) by a whole pile of folks:
|
---|
| 6 | *
|
---|
| 7 | * test(1); version 7-like -- author Erik Baalbergen
|
---|
| 8 | * modified by Eric Gisin to be used as built-in.
|
---|
| 9 | * modified by Arnold Robbins to add SVR3 compatibility
|
---|
| 10 | * (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket).
|
---|
| 11 | * modified by J.T. Conklin for NetBSD.
|
---|
| 12 | * modified by Herbert Xu to be used as built-in in ash.
|
---|
| 13 | * modified by Erik Andersen <andersen@codepoet.org> to be used
|
---|
| 14 | * in busybox.
|
---|
[2725] | 15 | * modified by Bernhard Reutner-Fischer to be useable (i.e. a bit less bloaty).
|
---|
[821] | 16 | *
|
---|
[2725] | 17 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
[821] | 18 | *
|
---|
| 19 | * Original copyright notice states:
|
---|
| 20 | * "This program is in the Public Domain."
|
---|
| 21 | */
|
---|
| 22 |
|
---|
[2725] | 23 | //kbuild:lib-$(CONFIG_TEST) += test.o test_ptr_hack.o
|
---|
| 24 | //kbuild:lib-$(CONFIG_ASH) += test.o test_ptr_hack.o
|
---|
| 25 | //kbuild:lib-$(CONFIG_HUSH) += test.o test_ptr_hack.o
|
---|
| 26 |
|
---|
| 27 | //config:config TEST
|
---|
| 28 | //config: bool "test"
|
---|
| 29 | //config: default y
|
---|
| 30 | //config: help
|
---|
| 31 | //config: test is used to check file types and compare values,
|
---|
| 32 | //config: returning an appropriate exit code. The bash shell
|
---|
| 33 | //config: has test built in, ash can build it in optionally.
|
---|
| 34 | //config:
|
---|
| 35 | //config:config FEATURE_TEST_64
|
---|
| 36 | //config: bool "Extend test to 64 bit"
|
---|
| 37 | //config: default y
|
---|
| 38 | //config: depends on TEST || ASH_BUILTIN_TEST || HUSH
|
---|
| 39 | //config: help
|
---|
| 40 | //config: Enable 64-bit support in test.
|
---|
| 41 |
|
---|
[3232] | 42 | /* "test --help" does not print help (POSIX compat), only "[ --help" does.
|
---|
| 43 | * We display "<applet> EXPRESSION ]" here (not "<applet> EXPRESSION")
|
---|
| 44 | * Unfortunately, it screws up generated BusyBox.html. TODO. */
|
---|
| 45 | //usage:#define test_trivial_usage
|
---|
| 46 | //usage: "EXPRESSION ]"
|
---|
| 47 | //usage:#define test_full_usage "\n\n"
|
---|
| 48 | //usage: "Check file types, compare values etc. Return a 0/1 exit code\n"
|
---|
| 49 | //usage: "depending on logical value of EXPRESSION"
|
---|
| 50 | //usage:
|
---|
| 51 | //usage:#define test_example_usage
|
---|
| 52 | //usage: "$ test 1 -eq 2\n"
|
---|
| 53 | //usage: "$ echo $?\n"
|
---|
| 54 | //usage: "1\n"
|
---|
| 55 | //usage: "$ test 1 -eq 1\n"
|
---|
| 56 | //usage: "$ echo $?\n"
|
---|
| 57 | //usage: "0\n"
|
---|
| 58 | //usage: "$ [ -d /etc ]\n"
|
---|
| 59 | //usage: "$ echo $?\n"
|
---|
| 60 | //usage: "0\n"
|
---|
| 61 | //usage: "$ [ -d /junk ]\n"
|
---|
| 62 | //usage: "$ echo $?\n"
|
---|
| 63 | //usage: "1\n"
|
---|
| 64 |
|
---|
[1765] | 65 | #include "libbb.h"
|
---|
[821] | 66 | #include <setjmp.h>
|
---|
| 67 |
|
---|
[2725] | 68 | /* This is a NOFORK applet. Be very careful! */
|
---|
[1765] | 69 |
|
---|
[2725] | 70 | /* test_main() is called from shells, and we need to be extra careful here.
|
---|
[3232] | 71 | * This is true regardless of PREFER_APPLETS and SH_STANDALONE
|
---|
[2725] | 72 | * state. */
|
---|
[1765] | 73 |
|
---|
[821] | 74 | /* test(1) accepts the following grammar:
|
---|
[2725] | 75 | oexpr ::= aexpr | aexpr "-o" oexpr ;
|
---|
| 76 | aexpr ::= nexpr | nexpr "-a" aexpr ;
|
---|
| 77 | nexpr ::= primary | "!" primary
|
---|
[821] | 78 | primary ::= unary-operator operand
|
---|
| 79 | | operand binary-operator operand
|
---|
| 80 | | operand
|
---|
| 81 | | "(" oexpr ")"
|
---|
| 82 | ;
|
---|
| 83 | unary-operator ::= "-r"|"-w"|"-x"|"-f"|"-d"|"-c"|"-b"|"-p"|
|
---|
| 84 | "-u"|"-g"|"-k"|"-s"|"-t"|"-z"|"-n"|"-o"|"-O"|"-G"|"-L"|"-S";
|
---|
| 85 |
|
---|
| 86 | binary-operator ::= "="|"=="|"!="|"-eq"|"-ne"|"-ge"|"-gt"|"-le"|"-lt"|
|
---|
| 87 | "-nt"|"-ot"|"-ef";
|
---|
| 88 | operand ::= <any legal UNIX file name>
|
---|
| 89 | */
|
---|
| 90 |
|
---|
[2725] | 91 | /* TODO: handle [[ expr ]] bashism bash-compatibly.
|
---|
| 92 | * [[ ]] is meant to be a "better [ ]", with less weird syntax
|
---|
| 93 | * and without the risk of variables and quoted strings misinterpreted
|
---|
| 94 | * as operators.
|
---|
| 95 | * This will require support from shells - we need to know quote status
|
---|
| 96 | * of each parameter (see below).
|
---|
| 97 | *
|
---|
| 98 | * Word splitting and pathname expansion should NOT be performed:
|
---|
| 99 | * # a="a b"; [[ $a = "a b" ]] && echo YES
|
---|
| 100 | * YES
|
---|
| 101 | * # [[ /bin/m* ]] && echo YES
|
---|
| 102 | * YES
|
---|
| 103 | *
|
---|
| 104 | * =~ should do regexp match
|
---|
| 105 | * = and == should do pattern match against right side:
|
---|
| 106 | * # [[ *a* == bab ]] && echo YES
|
---|
| 107 | * # [[ bab == *a* ]] && echo YES
|
---|
| 108 | * YES
|
---|
| 109 | * != does the negated == (i.e., also with pattern matching).
|
---|
| 110 | * Pattern matching is quotation-sensitive:
|
---|
| 111 | * # [[ bab == "b"a* ]] && echo YES
|
---|
| 112 | * YES
|
---|
| 113 | * # [[ bab == b"a*" ]] && echo YES
|
---|
| 114 | *
|
---|
| 115 | * Conditional operators such as -f must be unquoted literals to be recognized:
|
---|
| 116 | * # [[ -e /bin ]] && echo YES
|
---|
| 117 | * YES
|
---|
| 118 | * # [[ '-e' /bin ]] && echo YES
|
---|
| 119 | * bash: conditional binary operator expected...
|
---|
| 120 | * # A='-e'; [[ $A /bin ]] && echo YES
|
---|
| 121 | * bash: conditional binary operator expected...
|
---|
| 122 | *
|
---|
| 123 | * || and && should work as -o and -a work in [ ]
|
---|
| 124 | * -a and -o aren't recognized (&& and || are to be used instead)
|
---|
| 125 | * ( and ) do not need to be quoted unlike in [ ]:
|
---|
| 126 | * # [[ ( abc ) && '' ]] && echo YES
|
---|
| 127 | * # [[ ( abc ) || '' ]] && echo YES
|
---|
| 128 | * YES
|
---|
| 129 | * # [[ ( abc ) -o '' ]] && echo YES
|
---|
| 130 | * bash: syntax error in conditional expression...
|
---|
| 131 | *
|
---|
| 132 | * Apart from the above, [[ expr ]] should work as [ expr ]
|
---|
| 133 | */
|
---|
| 134 |
|
---|
| 135 | #define TEST_DEBUG 0
|
---|
| 136 |
|
---|
[821] | 137 | enum token {
|
---|
| 138 | EOI,
|
---|
[2725] | 139 |
|
---|
| 140 | FILRD, /* file access */
|
---|
[821] | 141 | FILWR,
|
---|
| 142 | FILEX,
|
---|
[2725] | 143 |
|
---|
[821] | 144 | FILEXIST,
|
---|
[2725] | 145 |
|
---|
| 146 | FILREG, /* file type */
|
---|
[821] | 147 | FILDIR,
|
---|
| 148 | FILCDEV,
|
---|
| 149 | FILBDEV,
|
---|
| 150 | FILFIFO,
|
---|
| 151 | FILSOCK,
|
---|
[2725] | 152 |
|
---|
[821] | 153 | FILSYM,
|
---|
| 154 | FILGZ,
|
---|
| 155 | FILTT,
|
---|
[2725] | 156 |
|
---|
| 157 | FILSUID, /* file bit */
|
---|
[821] | 158 | FILSGID,
|
---|
| 159 | FILSTCK,
|
---|
[2725] | 160 |
|
---|
| 161 | FILNT, /* file ops */
|
---|
[821] | 162 | FILOT,
|
---|
| 163 | FILEQ,
|
---|
[2725] | 164 |
|
---|
[821] | 165 | FILUID,
|
---|
| 166 | FILGID,
|
---|
[2725] | 167 |
|
---|
| 168 | STREZ, /* str ops */
|
---|
[821] | 169 | STRNZ,
|
---|
| 170 | STREQ,
|
---|
| 171 | STRNE,
|
---|
| 172 | STRLT,
|
---|
| 173 | STRGT,
|
---|
[2725] | 174 |
|
---|
| 175 | INTEQ, /* int ops */
|
---|
[821] | 176 | INTNE,
|
---|
| 177 | INTGE,
|
---|
| 178 | INTGT,
|
---|
| 179 | INTLE,
|
---|
| 180 | INTLT,
|
---|
[2725] | 181 |
|
---|
[821] | 182 | UNOT,
|
---|
| 183 | BAND,
|
---|
| 184 | BOR,
|
---|
| 185 | LPAREN,
|
---|
| 186 | RPAREN,
|
---|
| 187 | OPERAND
|
---|
| 188 | };
|
---|
[2725] | 189 | #define is_int_op(a) (((unsigned char)((a) - INTEQ)) <= 5)
|
---|
| 190 | #define is_str_op(a) (((unsigned char)((a) - STREZ)) <= 5)
|
---|
| 191 | #define is_file_op(a) (((unsigned char)((a) - FILNT)) <= 2)
|
---|
[1765] | 192 | #define is_file_access(a) (((unsigned char)((a) - FILRD)) <= 2)
|
---|
[2725] | 193 | #define is_file_type(a) (((unsigned char)((a) - FILREG)) <= 5)
|
---|
| 194 | #define is_file_bit(a) (((unsigned char)((a) - FILSUID)) <= 2)
|
---|
| 195 |
|
---|
| 196 | #if TEST_DEBUG
|
---|
| 197 | int depth;
|
---|
| 198 | #define nest_msg(...) do { \
|
---|
| 199 | depth++; \
|
---|
| 200 | fprintf(stderr, "%*s", depth*2, ""); \
|
---|
| 201 | fprintf(stderr, __VA_ARGS__); \
|
---|
| 202 | } while (0)
|
---|
| 203 | #define unnest_msg(...) do { \
|
---|
| 204 | fprintf(stderr, "%*s", depth*2, ""); \
|
---|
| 205 | fprintf(stderr, __VA_ARGS__); \
|
---|
| 206 | depth--; \
|
---|
| 207 | } while (0)
|
---|
| 208 | #define dbg_msg(...) do { \
|
---|
| 209 | fprintf(stderr, "%*s", depth*2, ""); \
|
---|
| 210 | fprintf(stderr, __VA_ARGS__); \
|
---|
| 211 | } while (0)
|
---|
| 212 | #define unnest_msg_and_return(expr, ...) do { \
|
---|
| 213 | number_t __res = (expr); \
|
---|
| 214 | fprintf(stderr, "%*s", depth*2, ""); \
|
---|
| 215 | fprintf(stderr, __VA_ARGS__, res); \
|
---|
| 216 | depth--; \
|
---|
| 217 | return __res; \
|
---|
| 218 | } while (0)
|
---|
| 219 | static const char *const TOKSTR[] = {
|
---|
| 220 | "EOI",
|
---|
| 221 | "FILRD",
|
---|
| 222 | "FILWR",
|
---|
| 223 | "FILEX",
|
---|
| 224 | "FILEXIST",
|
---|
| 225 | "FILREG",
|
---|
| 226 | "FILDIR",
|
---|
| 227 | "FILCDEV",
|
---|
| 228 | "FILBDEV",
|
---|
| 229 | "FILFIFO",
|
---|
| 230 | "FILSOCK",
|
---|
| 231 | "FILSYM",
|
---|
| 232 | "FILGZ",
|
---|
| 233 | "FILTT",
|
---|
| 234 | "FILSUID",
|
---|
| 235 | "FILSGID",
|
---|
| 236 | "FILSTCK",
|
---|
| 237 | "FILNT",
|
---|
| 238 | "FILOT",
|
---|
| 239 | "FILEQ",
|
---|
| 240 | "FILUID",
|
---|
| 241 | "FILGID",
|
---|
| 242 | "STREZ",
|
---|
| 243 | "STRNZ",
|
---|
| 244 | "STREQ",
|
---|
| 245 | "STRNE",
|
---|
| 246 | "STRLT",
|
---|
| 247 | "STRGT",
|
---|
| 248 | "INTEQ",
|
---|
| 249 | "INTNE",
|
---|
| 250 | "INTGE",
|
---|
| 251 | "INTGT",
|
---|
| 252 | "INTLE",
|
---|
| 253 | "INTLT",
|
---|
| 254 | "UNOT",
|
---|
| 255 | "BAND",
|
---|
| 256 | "BOR",
|
---|
| 257 | "LPAREN",
|
---|
| 258 | "RPAREN",
|
---|
| 259 | "OPERAND"
|
---|
| 260 | };
|
---|
| 261 | #else
|
---|
| 262 | #define nest_msg(...) ((void)0)
|
---|
| 263 | #define unnest_msg(...) ((void)0)
|
---|
| 264 | #define dbg_msg(...) ((void)0)
|
---|
| 265 | #define unnest_msg_and_return(expr, ...) return expr
|
---|
| 266 | #endif
|
---|
| 267 |
|
---|
| 268 | enum {
|
---|
[821] | 269 | UNOP,
|
---|
| 270 | BINOP,
|
---|
| 271 | BUNOP,
|
---|
| 272 | BBINOP,
|
---|
| 273 | PAREN
|
---|
| 274 | };
|
---|
| 275 |
|
---|
[2725] | 276 | struct operator_t {
|
---|
[1765] | 277 | unsigned char op_num, op_type;
|
---|
[2725] | 278 | };
|
---|
[1765] | 279 |
|
---|
[2725] | 280 | static const struct operator_t ops_table[] = {
|
---|
| 281 | { /* "-r" */ FILRD , UNOP },
|
---|
| 282 | { /* "-w" */ FILWR , UNOP },
|
---|
| 283 | { /* "-x" */ FILEX , UNOP },
|
---|
| 284 | { /* "-e" */ FILEXIST, UNOP },
|
---|
| 285 | { /* "-f" */ FILREG , UNOP },
|
---|
| 286 | { /* "-d" */ FILDIR , UNOP },
|
---|
| 287 | { /* "-c" */ FILCDEV , UNOP },
|
---|
| 288 | { /* "-b" */ FILBDEV , UNOP },
|
---|
| 289 | { /* "-p" */ FILFIFO , UNOP },
|
---|
| 290 | { /* "-u" */ FILSUID , UNOP },
|
---|
| 291 | { /* "-g" */ FILSGID , UNOP },
|
---|
| 292 | { /* "-k" */ FILSTCK , UNOP },
|
---|
| 293 | { /* "-s" */ FILGZ , UNOP },
|
---|
| 294 | { /* "-t" */ FILTT , UNOP },
|
---|
| 295 | { /* "-z" */ STREZ , UNOP },
|
---|
| 296 | { /* "-n" */ STRNZ , UNOP },
|
---|
| 297 | { /* "-h" */ FILSYM , UNOP }, /* for backwards compat */
|
---|
| 298 |
|
---|
| 299 | { /* "-O" */ FILUID , UNOP },
|
---|
| 300 | { /* "-G" */ FILGID , UNOP },
|
---|
| 301 | { /* "-L" */ FILSYM , UNOP },
|
---|
| 302 | { /* "-S" */ FILSOCK , UNOP },
|
---|
| 303 | { /* "=" */ STREQ , BINOP },
|
---|
| 304 | { /* "==" */ STREQ , BINOP },
|
---|
| 305 | { /* "!=" */ STRNE , BINOP },
|
---|
| 306 | { /* "<" */ STRLT , BINOP },
|
---|
| 307 | { /* ">" */ STRGT , BINOP },
|
---|
| 308 | { /* "-eq"*/ INTEQ , BINOP },
|
---|
| 309 | { /* "-ne"*/ INTNE , BINOP },
|
---|
| 310 | { /* "-ge"*/ INTGE , BINOP },
|
---|
| 311 | { /* "-gt"*/ INTGT , BINOP },
|
---|
| 312 | { /* "-le"*/ INTLE , BINOP },
|
---|
| 313 | { /* "-lt"*/ INTLT , BINOP },
|
---|
| 314 | { /* "-nt"*/ FILNT , BINOP },
|
---|
| 315 | { /* "-ot"*/ FILOT , BINOP },
|
---|
| 316 | { /* "-ef"*/ FILEQ , BINOP },
|
---|
| 317 | { /* "!" */ UNOT , BUNOP },
|
---|
| 318 | { /* "-a" */ BAND , BBINOP },
|
---|
| 319 | { /* "-o" */ BOR , BBINOP },
|
---|
| 320 | { /* "(" */ LPAREN , PAREN },
|
---|
| 321 | { /* ")" */ RPAREN , PAREN },
|
---|
[821] | 322 | };
|
---|
[2725] | 323 | /* Please keep these two tables in sync */
|
---|
| 324 | static const char ops_texts[] ALIGN1 =
|
---|
| 325 | "-r" "\0"
|
---|
| 326 | "-w" "\0"
|
---|
| 327 | "-x" "\0"
|
---|
| 328 | "-e" "\0"
|
---|
| 329 | "-f" "\0"
|
---|
| 330 | "-d" "\0"
|
---|
| 331 | "-c" "\0"
|
---|
| 332 | "-b" "\0"
|
---|
| 333 | "-p" "\0"
|
---|
| 334 | "-u" "\0"
|
---|
| 335 | "-g" "\0"
|
---|
| 336 | "-k" "\0"
|
---|
| 337 | "-s" "\0"
|
---|
| 338 | "-t" "\0"
|
---|
| 339 | "-z" "\0"
|
---|
| 340 | "-n" "\0"
|
---|
| 341 | "-h" "\0"
|
---|
[821] | 342 |
|
---|
[2725] | 343 | "-O" "\0"
|
---|
| 344 | "-G" "\0"
|
---|
| 345 | "-L" "\0"
|
---|
| 346 | "-S" "\0"
|
---|
| 347 | "=" "\0"
|
---|
| 348 | "==" "\0"
|
---|
| 349 | "!=" "\0"
|
---|
| 350 | "<" "\0"
|
---|
| 351 | ">" "\0"
|
---|
| 352 | "-eq" "\0"
|
---|
| 353 | "-ne" "\0"
|
---|
| 354 | "-ge" "\0"
|
---|
| 355 | "-gt" "\0"
|
---|
| 356 | "-le" "\0"
|
---|
| 357 | "-lt" "\0"
|
---|
| 358 | "-nt" "\0"
|
---|
| 359 | "-ot" "\0"
|
---|
| 360 | "-ef" "\0"
|
---|
| 361 | "!" "\0"
|
---|
| 362 | "-a" "\0"
|
---|
| 363 | "-o" "\0"
|
---|
| 364 | "(" "\0"
|
---|
| 365 | ")" "\0"
|
---|
| 366 | ;
|
---|
[1765] | 367 |
|
---|
[2725] | 368 |
|
---|
[1765] | 369 | #if ENABLE_FEATURE_TEST_64
|
---|
[2725] | 370 | typedef int64_t number_t;
|
---|
[821] | 371 | #else
|
---|
[2725] | 372 | typedef int number_t;
|
---|
[821] | 373 | #endif
|
---|
| 374 |
|
---|
| 375 |
|
---|
[2725] | 376 | /* We try to minimize both static and stack usage. */
|
---|
| 377 | struct test_statics {
|
---|
| 378 | char **args;
|
---|
| 379 | /* set only by check_operator(), either to bogus struct
|
---|
| 380 | * or points to matching operator_t struct. Never NULL. */
|
---|
| 381 | const struct operator_t *last_operator;
|
---|
| 382 | gid_t *group_array;
|
---|
| 383 | int ngroups;
|
---|
| 384 | jmp_buf leaving;
|
---|
| 385 | };
|
---|
[821] | 386 |
|
---|
[2725] | 387 | /* See test_ptr_hack.c */
|
---|
| 388 | extern struct test_statics *const test_ptr_to_statics;
|
---|
[821] | 389 |
|
---|
[2725] | 390 | #define S (*test_ptr_to_statics)
|
---|
| 391 | #define args (S.args )
|
---|
| 392 | #define last_operator (S.last_operator)
|
---|
| 393 | #define group_array (S.group_array )
|
---|
| 394 | #define ngroups (S.ngroups )
|
---|
| 395 | #define leaving (S.leaving )
|
---|
[821] | 396 |
|
---|
[2725] | 397 | #define INIT_S() do { \
|
---|
| 398 | (*(struct test_statics**)&test_ptr_to_statics) = xzalloc(sizeof(S)); \
|
---|
| 399 | barrier(); \
|
---|
| 400 | } while (0)
|
---|
| 401 | #define DEINIT_S() do { \
|
---|
| 402 | free(test_ptr_to_statics); \
|
---|
| 403 | } while (0)
|
---|
[821] | 404 |
|
---|
[2725] | 405 | static number_t primary(enum token n);
|
---|
[821] | 406 |
|
---|
[2725] | 407 | static void syntax(const char *op, const char *msg) NORETURN;
|
---|
[821] | 408 | static void syntax(const char *op, const char *msg)
|
---|
| 409 | {
|
---|
| 410 | if (op && *op) {
|
---|
| 411 | bb_error_msg("%s: %s", op, msg);
|
---|
| 412 | } else {
|
---|
[1765] | 413 | bb_error_msg("%s: %s"+4, msg);
|
---|
[821] | 414 | }
|
---|
| 415 | longjmp(leaving, 2);
|
---|
| 416 | }
|
---|
| 417 |
|
---|
[2725] | 418 | /* atoi with error detection */
|
---|
| 419 | //XXX: FIXME: duplicate of existing libbb function?
|
---|
| 420 | static number_t getn(const char *s)
|
---|
[821] | 421 | {
|
---|
[2725] | 422 | char *p;
|
---|
| 423 | #if ENABLE_FEATURE_TEST_64
|
---|
| 424 | long long r;
|
---|
| 425 | #else
|
---|
| 426 | long r;
|
---|
| 427 | #endif
|
---|
[821] | 428 |
|
---|
[2725] | 429 | errno = 0;
|
---|
| 430 | #if ENABLE_FEATURE_TEST_64
|
---|
| 431 | r = strtoll(s, &p, 10);
|
---|
| 432 | #else
|
---|
| 433 | r = strtol(s, &p, 10);
|
---|
| 434 | #endif
|
---|
| 435 |
|
---|
| 436 | if (errno != 0)
|
---|
| 437 | syntax(s, "out of range");
|
---|
| 438 |
|
---|
| 439 | if (p == s || *(skip_whitespace(p)) != '\0')
|
---|
| 440 | syntax(s, "bad number");
|
---|
| 441 |
|
---|
| 442 | return r;
|
---|
[821] | 443 | }
|
---|
| 444 |
|
---|
[2725] | 445 | /* UNUSED
|
---|
| 446 | static int newerf(const char *f1, const char *f2)
|
---|
[821] | 447 | {
|
---|
[2725] | 448 | struct stat b1, b2;
|
---|
[821] | 449 |
|
---|
[2725] | 450 | return (stat(f1, &b1) == 0 &&
|
---|
| 451 | stat(f2, &b2) == 0 && b1.st_mtime > b2.st_mtime);
|
---|
[821] | 452 | }
|
---|
| 453 |
|
---|
[2725] | 454 | static int olderf(const char *f1, const char *f2)
|
---|
[821] | 455 | {
|
---|
[2725] | 456 | struct stat b1, b2;
|
---|
| 457 |
|
---|
| 458 | return (stat(f1, &b1) == 0 &&
|
---|
| 459 | stat(f2, &b2) == 0 && b1.st_mtime < b2.st_mtime);
|
---|
[821] | 460 | }
|
---|
| 461 |
|
---|
[2725] | 462 | static int equalf(const char *f1, const char *f2)
|
---|
[821] | 463 | {
|
---|
[2725] | 464 | struct stat b1, b2;
|
---|
[821] | 465 |
|
---|
[2725] | 466 | return (stat(f1, &b1) == 0 &&
|
---|
| 467 | stat(f2, &b2) == 0 &&
|
---|
| 468 | b1.st_dev == b2.st_dev && b1.st_ino == b2.st_ino);
|
---|
| 469 | }
|
---|
| 470 | */
|
---|
[821] | 471 |
|
---|
| 472 |
|
---|
[2725] | 473 | static enum token check_operator(const char *s)
|
---|
| 474 | {
|
---|
| 475 | static const struct operator_t no_op = {
|
---|
| 476 | .op_num = -1,
|
---|
| 477 | .op_type = -1
|
---|
| 478 | };
|
---|
| 479 | int n;
|
---|
| 480 |
|
---|
| 481 | last_operator = &no_op;
|
---|
| 482 | if (s == NULL)
|
---|
| 483 | return EOI;
|
---|
| 484 | n = index_in_strings(ops_texts, s);
|
---|
| 485 | if (n < 0)
|
---|
| 486 | return OPERAND;
|
---|
| 487 | last_operator = &ops_table[n];
|
---|
| 488 | return ops_table[n].op_num;
|
---|
[821] | 489 | }
|
---|
| 490 |
|
---|
[2725] | 491 |
|
---|
[821] | 492 | static int binop(void)
|
---|
| 493 | {
|
---|
| 494 | const char *opnd1, *opnd2;
|
---|
[2725] | 495 | const struct operator_t *op;
|
---|
| 496 | number_t val1, val2;
|
---|
[821] | 497 |
|
---|
[2725] | 498 | opnd1 = *args;
|
---|
| 499 | check_operator(*++args);
|
---|
| 500 | op = last_operator;
|
---|
[821] | 501 |
|
---|
[2725] | 502 | opnd2 = *++args;
|
---|
[1765] | 503 | if (opnd2 == NULL)
|
---|
[2725] | 504 | syntax(args[-1], "argument expected");
|
---|
[821] | 505 |
|
---|
[1765] | 506 | if (is_int_op(op->op_num)) {
|
---|
| 507 | val1 = getn(opnd1);
|
---|
| 508 | val2 = getn(opnd2);
|
---|
| 509 | if (op->op_num == INTEQ)
|
---|
| 510 | return val1 == val2;
|
---|
| 511 | if (op->op_num == INTNE)
|
---|
| 512 | return val1 != val2;
|
---|
| 513 | if (op->op_num == INTGE)
|
---|
| 514 | return val1 >= val2;
|
---|
| 515 | if (op->op_num == INTGT)
|
---|
| 516 | return val1 > val2;
|
---|
| 517 | if (op->op_num == INTLE)
|
---|
| 518 | return val1 <= val2;
|
---|
[2725] | 519 | /*if (op->op_num == INTLT)*/
|
---|
| 520 | return val1 < val2;
|
---|
[821] | 521 | }
|
---|
[1765] | 522 | if (is_str_op(op->op_num)) {
|
---|
| 523 | val1 = strcmp(opnd1, opnd2);
|
---|
| 524 | if (op->op_num == STREQ)
|
---|
| 525 | return val1 == 0;
|
---|
| 526 | if (op->op_num == STRNE)
|
---|
| 527 | return val1 != 0;
|
---|
| 528 | if (op->op_num == STRLT)
|
---|
| 529 | return val1 < 0;
|
---|
[2725] | 530 | /*if (op->op_num == STRGT)*/
|
---|
| 531 | return val1 > 0;
|
---|
[1765] | 532 | }
|
---|
| 533 | /* We are sure that these three are by now the only binops we didn't check
|
---|
| 534 | * yet, so we do not check if the class is correct:
|
---|
| 535 | */
|
---|
| 536 | /* if (is_file_op(op->op_num)) */
|
---|
| 537 | {
|
---|
| 538 | struct stat b1, b2;
|
---|
| 539 |
|
---|
| 540 | if (stat(opnd1, &b1) || stat(opnd2, &b2))
|
---|
| 541 | return 0; /* false, since at least one stat failed */
|
---|
| 542 | if (op->op_num == FILNT)
|
---|
| 543 | return b1.st_mtime > b2.st_mtime;
|
---|
| 544 | if (op->op_num == FILOT)
|
---|
| 545 | return b1.st_mtime < b2.st_mtime;
|
---|
[2725] | 546 | /*if (op->op_num == FILEQ)*/
|
---|
| 547 | return b1.st_dev == b2.st_dev && b1.st_ino == b2.st_ino;
|
---|
[1765] | 548 | }
|
---|
[2725] | 549 | /*return 1; - NOTREACHED */
|
---|
[821] | 550 | }
|
---|
| 551 |
|
---|
[2725] | 552 |
|
---|
| 553 | static void initialize_group_array(void)
|
---|
| 554 | {
|
---|
| 555 | int n;
|
---|
| 556 |
|
---|
| 557 | /* getgroups may be expensive, try to use it only once */
|
---|
| 558 | ngroups = 32;
|
---|
| 559 | do {
|
---|
| 560 | /* FIXME: ash tries so hard to not die on OOM,
|
---|
| 561 | * and we spoil it with just one xrealloc here */
|
---|
| 562 | /* We realloc, because test_main can be entered repeatedly by shell.
|
---|
| 563 | * Testcase (ash): 'while true; do test -x some_file; done'
|
---|
| 564 | * and watch top. (some_file must have owner != you) */
|
---|
| 565 | n = ngroups;
|
---|
| 566 | group_array = xrealloc(group_array, n * sizeof(gid_t));
|
---|
| 567 | ngroups = getgroups(n, group_array);
|
---|
| 568 | } while (ngroups > n);
|
---|
| 569 | }
|
---|
| 570 |
|
---|
| 571 |
|
---|
| 572 | /* Return non-zero if GID is one that we have in our groups list. */
|
---|
| 573 | //XXX: FIXME: duplicate of existing libbb function?
|
---|
| 574 | // see toplevel TODO file:
|
---|
| 575 | // possible code duplication ingroup() and is_a_group_member()
|
---|
| 576 | static int is_a_group_member(gid_t gid)
|
---|
| 577 | {
|
---|
| 578 | int i;
|
---|
| 579 |
|
---|
| 580 | /* Short-circuit if possible, maybe saving a call to getgroups(). */
|
---|
| 581 | if (gid == getgid() || gid == getegid())
|
---|
| 582 | return 1;
|
---|
| 583 |
|
---|
| 584 | if (ngroups == 0)
|
---|
| 585 | initialize_group_array();
|
---|
| 586 |
|
---|
| 587 | /* Search through the list looking for GID. */
|
---|
| 588 | for (i = 0; i < ngroups; i++)
|
---|
| 589 | if (gid == group_array[i])
|
---|
| 590 | return 1;
|
---|
| 591 |
|
---|
| 592 | return 0;
|
---|
| 593 | }
|
---|
| 594 |
|
---|
| 595 |
|
---|
| 596 | /* Do the same thing access(2) does, but use the effective uid and gid,
|
---|
| 597 | and don't make the mistake of telling root that any file is
|
---|
| 598 | executable. */
|
---|
| 599 | static int test_eaccess(char *path, int mode)
|
---|
| 600 | {
|
---|
| 601 | struct stat st;
|
---|
| 602 | unsigned int euid = geteuid();
|
---|
| 603 |
|
---|
| 604 | if (stat(path, &st) < 0)
|
---|
| 605 | return -1;
|
---|
| 606 |
|
---|
| 607 | if (euid == 0) {
|
---|
| 608 | /* Root can read or write any file. */
|
---|
| 609 | if (mode != X_OK)
|
---|
| 610 | return 0;
|
---|
| 611 |
|
---|
| 612 | /* Root can execute any file that has any one of the execute
|
---|
[3232] | 613 | * bits set. */
|
---|
[2725] | 614 | if (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))
|
---|
| 615 | return 0;
|
---|
| 616 | }
|
---|
| 617 |
|
---|
| 618 | if (st.st_uid == euid) /* owner */
|
---|
| 619 | mode <<= 6;
|
---|
| 620 | else if (is_a_group_member(st.st_gid))
|
---|
| 621 | mode <<= 3;
|
---|
| 622 |
|
---|
| 623 | if (st.st_mode & mode)
|
---|
| 624 | return 0;
|
---|
| 625 |
|
---|
| 626 | return -1;
|
---|
| 627 | }
|
---|
| 628 |
|
---|
| 629 |
|
---|
[821] | 630 | static int filstat(char *nm, enum token mode)
|
---|
| 631 | {
|
---|
| 632 | struct stat s;
|
---|
[2725] | 633 | unsigned i = i; /* gcc 3.x thinks it can be used uninitialized */
|
---|
[821] | 634 |
|
---|
| 635 | if (mode == FILSYM) {
|
---|
| 636 | #ifdef S_IFLNK
|
---|
| 637 | if (lstat(nm, &s) == 0) {
|
---|
| 638 | i = S_IFLNK;
|
---|
| 639 | goto filetype;
|
---|
| 640 | }
|
---|
| 641 | #endif
|
---|
| 642 | return 0;
|
---|
| 643 | }
|
---|
| 644 |
|
---|
| 645 | if (stat(nm, &s) != 0)
|
---|
| 646 | return 0;
|
---|
[1765] | 647 | if (mode == FILEXIST)
|
---|
[821] | 648 | return 1;
|
---|
[1765] | 649 | if (is_file_access(mode)) {
|
---|
| 650 | if (mode == FILRD)
|
---|
| 651 | i = R_OK;
|
---|
| 652 | if (mode == FILWR)
|
---|
| 653 | i = W_OK;
|
---|
| 654 | if (mode == FILEX)
|
---|
| 655 | i = X_OK;
|
---|
| 656 | return test_eaccess(nm, i) == 0;
|
---|
| 657 | }
|
---|
| 658 | if (is_file_type(mode)) {
|
---|
| 659 | if (mode == FILREG)
|
---|
| 660 | i = S_IFREG;
|
---|
| 661 | if (mode == FILDIR)
|
---|
| 662 | i = S_IFDIR;
|
---|
| 663 | if (mode == FILCDEV)
|
---|
| 664 | i = S_IFCHR;
|
---|
| 665 | if (mode == FILBDEV)
|
---|
| 666 | i = S_IFBLK;
|
---|
| 667 | if (mode == FILFIFO) {
|
---|
[821] | 668 | #ifdef S_IFIFO
|
---|
[1765] | 669 | i = S_IFIFO;
|
---|
[821] | 670 | #else
|
---|
[1765] | 671 | return 0;
|
---|
[821] | 672 | #endif
|
---|
[1765] | 673 | }
|
---|
| 674 | if (mode == FILSOCK) {
|
---|
[821] | 675 | #ifdef S_IFSOCK
|
---|
[1765] | 676 | i = S_IFSOCK;
|
---|
[821] | 677 | #else
|
---|
[1765] | 678 | return 0;
|
---|
[821] | 679 | #endif
|
---|
[1765] | 680 | }
|
---|
| 681 | filetype:
|
---|
| 682 | return ((s.st_mode & S_IFMT) == i);
|
---|
| 683 | }
|
---|
| 684 | if (is_file_bit(mode)) {
|
---|
| 685 | if (mode == FILSUID)
|
---|
| 686 | i = S_ISUID;
|
---|
| 687 | if (mode == FILSGID)
|
---|
| 688 | i = S_ISGID;
|
---|
| 689 | if (mode == FILSTCK)
|
---|
| 690 | i = S_ISVTX;
|
---|
| 691 | return ((s.st_mode & i) != 0);
|
---|
| 692 | }
|
---|
| 693 | if (mode == FILGZ)
|
---|
[821] | 694 | return s.st_size > 0L;
|
---|
[1765] | 695 | if (mode == FILUID)
|
---|
[821] | 696 | return s.st_uid == geteuid();
|
---|
[1765] | 697 | if (mode == FILGID)
|
---|
[821] | 698 | return s.st_gid == getegid();
|
---|
[1765] | 699 | return 1; /* NOTREACHED */
|
---|
[821] | 700 | }
|
---|
| 701 |
|
---|
[2725] | 702 |
|
---|
| 703 | static number_t nexpr(enum token n)
|
---|
[821] | 704 | {
|
---|
[2725] | 705 | number_t res;
|
---|
[821] | 706 |
|
---|
[2725] | 707 | nest_msg(">nexpr(%s)\n", TOKSTR[n]);
|
---|
| 708 | if (n == UNOT) {
|
---|
| 709 | n = check_operator(*++args);
|
---|
| 710 | if (n == EOI) {
|
---|
| 711 | /* special case: [ ! ], [ a -a ! ] are valid */
|
---|
| 712 | /* IOW, "! ARG" may miss ARG */
|
---|
[3232] | 713 | args--;
|
---|
| 714 | unnest_msg("<nexpr:1 (!EOI), args:%s(%p)\n", args[0], &args[0]);
|
---|
[2725] | 715 | return 1;
|
---|
| 716 | }
|
---|
| 717 | res = !nexpr(n);
|
---|
| 718 | unnest_msg("<nexpr:%lld\n", res);
|
---|
| 719 | return res;
|
---|
[821] | 720 | }
|
---|
[2725] | 721 | res = primary(n);
|
---|
| 722 | unnest_msg("<nexpr:%lld\n", res);
|
---|
| 723 | return res;
|
---|
| 724 | }
|
---|
[1765] | 725 |
|
---|
| 726 |
|
---|
[2725] | 727 | static number_t aexpr(enum token n)
|
---|
[821] | 728 | {
|
---|
[2725] | 729 | number_t res;
|
---|
[821] | 730 |
|
---|
[2725] | 731 | nest_msg(">aexpr(%s)\n", TOKSTR[n]);
|
---|
| 732 | res = nexpr(n);
|
---|
[3232] | 733 | dbg_msg("aexpr: nexpr:%lld, next args:%s(%p)\n", res, args[1], &args[1]);
|
---|
[2725] | 734 | if (check_operator(*++args) == BAND) {
|
---|
[3232] | 735 | dbg_msg("aexpr: arg is AND, next args:%s(%p)\n", args[1], &args[1]);
|
---|
[2725] | 736 | res = aexpr(check_operator(*++args)) && res;
|
---|
| 737 | unnest_msg("<aexpr:%lld\n", res);
|
---|
| 738 | return res;
|
---|
| 739 | }
|
---|
| 740 | args--;
|
---|
[3232] | 741 | unnest_msg("<aexpr:%lld, args:%s(%p)\n", res, args[0], &args[0]);
|
---|
[2725] | 742 | return res;
|
---|
| 743 | }
|
---|
[821] | 744 |
|
---|
| 745 |
|
---|
[2725] | 746 | static number_t oexpr(enum token n)
|
---|
| 747 | {
|
---|
| 748 | number_t res;
|
---|
[821] | 749 |
|
---|
[2725] | 750 | nest_msg(">oexpr(%s)\n", TOKSTR[n]);
|
---|
| 751 | res = aexpr(n);
|
---|
[3232] | 752 | dbg_msg("oexpr: aexpr:%lld, next args:%s(%p)\n", res, args[1], &args[1]);
|
---|
[2725] | 753 | if (check_operator(*++args) == BOR) {
|
---|
[3232] | 754 | dbg_msg("oexpr: next arg is OR, next args:%s(%p)\n", args[1], &args[1]);
|
---|
[2725] | 755 | res = oexpr(check_operator(*++args)) || res;
|
---|
| 756 | unnest_msg("<oexpr:%lld\n", res);
|
---|
| 757 | return res;
|
---|
| 758 | }
|
---|
| 759 | args--;
|
---|
[3232] | 760 | unnest_msg("<oexpr:%lld, args:%s(%p)\n", res, args[0], &args[0]);
|
---|
[2725] | 761 | return res;
|
---|
[821] | 762 | }
|
---|
| 763 |
|
---|
[2725] | 764 |
|
---|
| 765 | static number_t primary(enum token n)
|
---|
[821] | 766 | {
|
---|
[2725] | 767 | #if TEST_DEBUG
|
---|
| 768 | number_t res = res; /* for compiler */
|
---|
| 769 | #else
|
---|
| 770 | number_t res;
|
---|
| 771 | #endif
|
---|
| 772 | const struct operator_t *args0_op;
|
---|
[821] | 773 |
|
---|
[2725] | 774 | nest_msg(">primary(%s)\n", TOKSTR[n]);
|
---|
| 775 | if (n == EOI) {
|
---|
| 776 | syntax(NULL, "argument expected");
|
---|
| 777 | }
|
---|
| 778 | if (n == LPAREN) {
|
---|
| 779 | res = oexpr(check_operator(*++args));
|
---|
| 780 | if (check_operator(*++args) != RPAREN)
|
---|
| 781 | syntax(NULL, "closing paren expected");
|
---|
| 782 | unnest_msg("<primary:%lld\n", res);
|
---|
| 783 | return res;
|
---|
| 784 | }
|
---|
[821] | 785 |
|
---|
[2725] | 786 | /* coreutils 6.9 checks "is args[1] binop and args[2] exist?" first,
|
---|
| 787 | * do the same */
|
---|
| 788 | args0_op = last_operator;
|
---|
| 789 | /* last_operator = operator at args[1] */
|
---|
| 790 | if (check_operator(args[1]) != EOI) { /* if args[1] != NULL */
|
---|
| 791 | if (args[2]) {
|
---|
| 792 | // coreutils also does this:
|
---|
| 793 | // if (args[3] && args[0]="-l" && args[2] is BINOP)
|
---|
| 794 | // return binop(1 /* prepended by -l */);
|
---|
| 795 | if (last_operator->op_type == BINOP)
|
---|
| 796 | unnest_msg_and_return(binop(), "<primary: binop:%lld\n");
|
---|
| 797 | }
|
---|
| 798 | }
|
---|
| 799 | /* check "is args[0] unop?" second */
|
---|
| 800 | if (args0_op->op_type == UNOP) {
|
---|
| 801 | /* unary expression */
|
---|
| 802 | if (args[1] == NULL)
|
---|
| 803 | // syntax(args0_op->op_text, "argument expected");
|
---|
| 804 | goto check_emptiness;
|
---|
| 805 | args++;
|
---|
| 806 | if (n == STREZ)
|
---|
| 807 | unnest_msg_and_return(args[0][0] == '\0', "<primary:%lld\n");
|
---|
| 808 | if (n == STRNZ)
|
---|
| 809 | unnest_msg_and_return(args[0][0] != '\0', "<primary:%lld\n");
|
---|
| 810 | if (n == FILTT)
|
---|
| 811 | unnest_msg_and_return(isatty(getn(*args)), "<primary: isatty(%s)%lld\n", *args);
|
---|
| 812 | unnest_msg_and_return(filstat(*args, n), "<primary: filstat(%s):%lld\n", *args);
|
---|
| 813 | }
|
---|
[821] | 814 |
|
---|
[2725] | 815 | /*check_operator(args[1]); - already done */
|
---|
| 816 | if (last_operator->op_type == BINOP) {
|
---|
| 817 | /* args[2] is known to be NULL, isn't it bound to fail? */
|
---|
| 818 | unnest_msg_and_return(binop(), "<primary:%lld\n");
|
---|
| 819 | }
|
---|
| 820 | check_emptiness:
|
---|
| 821 | unnest_msg_and_return(args[0][0] != '\0', "<primary:%lld\n");
|
---|
[821] | 822 | }
|
---|
| 823 |
|
---|
| 824 |
|
---|
[2725] | 825 | int test_main(int argc, char **argv)
|
---|
[821] | 826 | {
|
---|
[2725] | 827 | int res;
|
---|
| 828 | const char *arg0;
|
---|
| 829 | // bool negate = 0;
|
---|
[821] | 830 |
|
---|
[2725] | 831 | arg0 = bb_basename(argv[0]);
|
---|
| 832 | if (arg0[0] == '[') {
|
---|
| 833 | --argc;
|
---|
| 834 | if (!arg0[1]) { /* "[" ? */
|
---|
| 835 | if (NOT_LONE_CHAR(argv[argc], ']')) {
|
---|
| 836 | bb_error_msg("missing ]");
|
---|
| 837 | return 2;
|
---|
| 838 | }
|
---|
| 839 | } else { /* assuming "[[" */
|
---|
| 840 | if (strcmp(argv[argc], "]]") != 0) {
|
---|
| 841 | bb_error_msg("missing ]]");
|
---|
| 842 | return 2;
|
---|
| 843 | }
|
---|
| 844 | }
|
---|
| 845 | argv[argc] = NULL;
|
---|
| 846 | }
|
---|
[821] | 847 |
|
---|
[2725] | 848 | /* We must do DEINIT_S() prior to returning */
|
---|
| 849 | INIT_S();
|
---|
[821] | 850 |
|
---|
[2725] | 851 | res = setjmp(leaving);
|
---|
| 852 | if (res)
|
---|
| 853 | goto ret;
|
---|
[821] | 854 |
|
---|
[2725] | 855 | /* resetting ngroups is probably unnecessary. it will
|
---|
| 856 | * force a new call to getgroups(), which prevents using
|
---|
| 857 | * group data fetched during a previous call. but the
|
---|
| 858 | * only way the group data could be stale is if there's
|
---|
| 859 | * been an intervening call to setgroups(), and this
|
---|
| 860 | * isn't likely in the case of a shell. paranoia
|
---|
| 861 | * prevails...
|
---|
| 862 | */
|
---|
| 863 | /*ngroups = 0; - done by INIT_S() */
|
---|
[821] | 864 |
|
---|
[2725] | 865 | //argc--;
|
---|
| 866 | argv++;
|
---|
[821] | 867 |
|
---|
[2725] | 868 | /* Implement special cases from POSIX.2, section 4.62.4 */
|
---|
| 869 | if (!argv[0]) { /* "test" */
|
---|
| 870 | res = 1;
|
---|
| 871 | goto ret;
|
---|
| 872 | }
|
---|
| 873 | #if 0
|
---|
| 874 | // Now it's fixed in the parser and should not be needed
|
---|
| 875 | if (LONE_CHAR(argv[0], '!') && argv[1]) {
|
---|
| 876 | negate = 1;
|
---|
| 877 | //argc--;
|
---|
| 878 | argv++;
|
---|
| 879 | }
|
---|
| 880 | if (!argv[1]) { /* "test [!] arg" */
|
---|
| 881 | res = (*argv[0] == '\0');
|
---|
| 882 | goto ret;
|
---|
| 883 | }
|
---|
| 884 | if (argv[2] && !argv[3]) {
|
---|
| 885 | check_operator(argv[1]);
|
---|
| 886 | if (last_operator->op_type == BINOP) {
|
---|
| 887 | /* "test [!] arg1 <binary_op> arg2" */
|
---|
| 888 | args = argv;
|
---|
| 889 | res = (binop() == 0);
|
---|
| 890 | goto ret;
|
---|
| 891 | }
|
---|
| 892 | }
|
---|
[821] | 893 |
|
---|
[2725] | 894 | /* Some complex expression. Undo '!' removal */
|
---|
| 895 | if (negate) {
|
---|
| 896 | negate = 0;
|
---|
| 897 | //argc++;
|
---|
| 898 | argv--;
|
---|
[902] | 899 | }
|
---|
[2725] | 900 | #endif
|
---|
| 901 | args = argv;
|
---|
| 902 | res = !oexpr(check_operator(*args));
|
---|
[821] | 903 |
|
---|
[2725] | 904 | if (*args != NULL && *++args != NULL) {
|
---|
[3232] | 905 | /* Examples:
|
---|
| 906 | * test 3 -lt 5 6
|
---|
| 907 | * test -t 1 2
|
---|
| 908 | */
|
---|
[2725] | 909 | bb_error_msg("%s: unknown operand", *args);
|
---|
| 910 | res = 2;
|
---|
| 911 | }
|
---|
| 912 | ret:
|
---|
| 913 | DEINIT_S();
|
---|
| 914 | // return negate ? !res : res;
|
---|
| 915 | return res;
|
---|
[821] | 916 | }
|
---|