1 /* 2 * Cygwin extras 3 */ 4 5 #define PERLIO_NOT_STDIO 0 6 #include "EXTERN.h" 7 #include "perl.h" 8 #undef USE_DYNAMIC_LOADING 9 #include "XSUB.h" 10 11 #include <unistd.h> 12 #include <process.h> 13 #include <sys/cygwin.h> 14 #include <cygwin/version.h> 15 #include <mntent.h> 16 #include <alloca.h> 17 #include <dlfcn.h> 18 #if (CYGWIN_VERSION_API_MINOR >= 181) 19 #include <wchar.h> 20 #endif 21 22 /* 23 * pp_system() implemented via spawn() 24 * - more efficient and useful when embedding Perl in non-Cygwin apps 25 * - code mostly borrowed from djgpp.c 26 */ 27 static int 28 do_spawnvp (const char *path, const char * const *argv) 29 { 30 dTHX; 31 Sigsave_t ihand,qhand; 32 int childpid, result, status; 33 34 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand); 35 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand); 36 childpid = spawnvp(_P_NOWAIT,path,argv); 37 if (childpid < 0) { 38 status = -1; 39 if(ckWARN(WARN_EXEC)) 40 Perl_warner(aTHX_ packWARN(WARN_EXEC),"Can't spawn \"%s\": %s", 41 path,Strerror (errno)); 42 } else { 43 do { 44 result = wait4pid(childpid, &status, 0); 45 } while (result == -1 && errno == EINTR); 46 if(result < 0) 47 status = -1; 48 } 49 (void)rsignal_restore(SIGINT, &ihand); 50 (void)rsignal_restore(SIGQUIT, &qhand); 51 return status; 52 } 53 54 int 55 do_aspawn (SV *really, void **mark, void **sp) 56 { 57 dTHX; 58 int rc; 59 char const **a; 60 char *tmps,**argv; 61 STRLEN n_a; 62 63 if (sp<=mark) 64 return -1; 65 argv=(char**) alloca ((sp-mark+3)*sizeof (char*)); 66 a=(char const **)argv; 67 68 while (++mark <= sp) 69 if (*mark) 70 *a++ = SvPVx((SV *)*mark, n_a); 71 else 72 *a++ = ""; 73 *a = (char*)NULL; 74 75 if (argv[0][0] != '/' && argv[0][0] != '\\' 76 && !(argv[0][0] && argv[0][1] == ':' 77 && (argv[0][2] == '/' || argv[0][2] != '\\')) 78 ) /* will swawnvp use PATH? */ 79 TAINT_ENV(); /* testing IFS here is overkill, probably */ 80 81 if (really && *(tmps = SvPV(really, n_a))) 82 rc=do_spawnvp (tmps,(const char * const *)argv); 83 else 84 rc=do_spawnvp (argv[0],(const char *const *)argv); 85 86 return rc; 87 } 88 89 int 90 do_spawn (char *cmd) 91 { 92 dTHX; 93 char const **a; 94 char *s; 95 char const *metachars = "$&*(){}[]'\";\\?>|<~`\n"; 96 const char *command[4]; 97 98 while (*cmd && isSPACE(*cmd)) 99 cmd++; 100 101 if (strnEQ (cmd,"/bin/sh",7) && isSPACE (cmd[7])) 102 cmd+=5; 103 104 /* save an extra exec if possible */ 105 /* see if there are shell metacharacters in it */ 106 if (strstr (cmd,"...")) 107 goto doshell; 108 if (*cmd=='.' && isSPACE (cmd[1])) 109 goto doshell; 110 if (strnEQ (cmd,"exec",4) && isSPACE (cmd[4])) 111 goto doshell; 112 for (s=cmd; *s && isALPHA (*s); s++) ; /* catch VAR=val gizmo */ 113 if (*s=='=') 114 goto doshell; 115 116 for (s=cmd; *s; s++) 117 if (strchr (metachars,*s)) 118 { 119 if (*s=='\n' && s[1]=='\0') 120 { 121 *s='\0'; 122 break; 123 } 124 doshell: 125 command[0] = "sh"; 126 command[1] = "-c"; 127 command[2] = cmd; 128 command[3] = NULL; 129 130 return do_spawnvp("sh",command); 131 } 132 133 Newx (PL_Argv, (s-cmd)/2+2, const char*); 134 PL_Cmd=savepvn (cmd,s-cmd); 135 a=PL_Argv; 136 for (s=PL_Cmd; *s;) { 137 while (*s && isSPACE (*s)) s++; 138 if (*s) 139 *(a++)=s; 140 while (*s && !isSPACE (*s)) s++; 141 if (*s) 142 *s++='\0'; 143 } 144 *a = (char*)NULL; 145 if (!PL_Argv[0]) 146 return -1; 147 148 return do_spawnvp(PL_Argv[0],(const char * const *)PL_Argv); 149 } 150 151 #if (CYGWIN_VERSION_API_MINOR >= 181) 152 char* 153 wide_to_utf8(const wchar_t *wbuf) 154 { 155 char *buf; 156 int wlen = 0; 157 char *oldlocale = setlocale(LC_CTYPE, NULL); 158 setlocale(LC_CTYPE, "utf-8"); 159 160 /* uvchr_to_utf8(buf, chr) or Encoding::_bytes_to_utf8(sv, "UCS-2BE"); */ 161 wlen = wcsrtombs(NULL, (const wchar_t **)&wbuf, wlen, NULL); 162 buf = (char *) safemalloc(wlen+1); 163 wcsrtombs(buf, (const wchar_t **)&wbuf, wlen, NULL); 164 165 if (oldlocale) setlocale(LC_CTYPE, oldlocale); 166 else setlocale(LC_CTYPE, "C"); 167 return buf; 168 } 169 170 wchar_t* 171 utf8_to_wide(const char *buf) 172 { 173 wchar_t *wbuf; 174 mbstate_t mbs; 175 char *oldlocale = setlocale(LC_CTYPE, NULL); 176 int wlen = sizeof(wchar_t)*strlen(buf); 177 178 setlocale(LC_CTYPE, "utf-8"); 179 wbuf = (wchar_t *) safemalloc(wlen); 180 /* utf8_to_uvchr_buf(pathname, pathname + wlen, wpath) or Encoding::_utf8_to_bytes(sv, "UCS-2BE"); */ 181 wlen = mbsrtowcs(wbuf, (const char**)&buf, wlen, &mbs); 182 183 if (oldlocale) setlocale(LC_CTYPE, oldlocale); 184 else setlocale(LC_CTYPE, "C"); 185 return wbuf; 186 } 187 #endif /* cygwin 1.7 */ 188 189 /* see also Cwd.pm */ 190 XS(Cygwin_cwd) 191 { 192 dXSARGS; 193 char *cwd; 194 195 /* See http://rt.perl.org/rt3/Ticket/Display.html?id=38628 196 There is Cwd->cwd() usage in the wild, and previous versions didn't die. 197 */ 198 if(items > 1) 199 Perl_croak(aTHX_ "Usage: Cwd::cwd()"); 200 if((cwd = getcwd(NULL, -1))) { 201 ST(0) = sv_2mortal(newSVpv(cwd, 0)); 202 free(cwd); 203 SvTAINTED_on(ST(0)); 204 XSRETURN(1); 205 } 206 XSRETURN_UNDEF; 207 } 208 209 XS(XS_Cygwin_pid_to_winpid) 210 { 211 dXSARGS; 212 dXSTARG; 213 pid_t pid, RETVAL; 214 215 if (items != 1) 216 Perl_croak(aTHX_ "Usage: Cygwin::pid_to_winpid(pid)"); 217 218 pid = (pid_t)SvIV(ST(0)); 219 220 if ((RETVAL = cygwin_internal(CW_CYGWIN_PID_TO_WINPID, pid)) > 0) { 221 XSprePUSH; PUSHi((IV)RETVAL); 222 XSRETURN(1); 223 } 224 XSRETURN_UNDEF; 225 } 226 227 XS(XS_Cygwin_winpid_to_pid) 228 { 229 dXSARGS; 230 dXSTARG; 231 pid_t pid, RETVAL; 232 233 if (items != 1) 234 Perl_croak(aTHX_ "Usage: Cygwin::winpid_to_pid(pid)"); 235 236 pid = (pid_t)SvIV(ST(0)); 237 238 #if (CYGWIN_VERSION_API_MINOR >= 181) 239 RETVAL = cygwin_winpid_to_pid(pid); 240 #else 241 RETVAL = cygwin32_winpid_to_pid(pid); 242 #endif 243 if (RETVAL > 0) { 244 XSprePUSH; PUSHi((IV)RETVAL); 245 XSRETURN(1); 246 } 247 XSRETURN_UNDEF; 248 } 249 250 XS(XS_Cygwin_win_to_posix_path) 251 252 { 253 dXSARGS; 254 int absolute_flag = 0; 255 STRLEN len; 256 int err = 0; 257 char *src_path; 258 char *posix_path; 259 int isutf8 = 0; 260 261 if (items < 1 || items > 2) 262 Perl_croak(aTHX_ "Usage: Cygwin::win_to_posix_path(pathname, [absolute])"); 263 264 src_path = SvPV(ST(0), len); 265 if (items == 2) 266 absolute_flag = SvTRUE(ST(1)); 267 268 if (!len) 269 Perl_croak(aTHX_ "can't convert empty path"); 270 isutf8 = SvUTF8(ST(0)); 271 272 #if (CYGWIN_VERSION_API_MINOR >= 181) 273 /* Check utf8 flag and use wide api then. 274 Size calculation: On overflow let cygwin_conv_path calculate the final size. 275 */ 276 if (isutf8) { 277 int what = absolute_flag ? CCP_WIN_W_TO_POSIX : CCP_WIN_W_TO_POSIX | CCP_RELATIVE; 278 int wlen = sizeof(wchar_t)*(len + 260 + 1001); 279 wchar_t *wpath = (wchar_t *) safemalloc(sizeof(wchar_t)*len); 280 wchar_t *wbuf = (wchar_t *) safemalloc(wlen); 281 if (!IN_BYTES) { 282 mbstate_t mbs; 283 char *oldlocale = setlocale(LC_CTYPE, NULL); 284 setlocale(LC_CTYPE, "utf-8"); 285 /* utf8_to_uvchr_buf(src_path, src_path + wlen, wpath) or Encoding::_utf8_to_bytes(sv, "UCS-2BE"); */ 286 wlen = mbsrtowcs(wpath, (const char**)&src_path, wlen, &mbs); 287 if (wlen > 0) 288 err = cygwin_conv_path(what, wpath, wbuf, wlen); 289 if (oldlocale) setlocale(LC_CTYPE, oldlocale); 290 else setlocale(LC_CTYPE, "C"); 291 } else { /* use bytes; assume already ucs-2 encoded bytestream */ 292 err = cygwin_conv_path(what, src_path, wbuf, wlen); 293 } 294 if (err == ENOSPC) { /* our space assumption was wrong, not enough space */ 295 int newlen = cygwin_conv_path(what, wpath, wbuf, 0); 296 wbuf = (wchar_t *) realloc(&wbuf, newlen); 297 err = cygwin_conv_path(what, wpath, wbuf, newlen); 298 wlen = newlen; 299 } 300 /* utf16_to_utf8(*p, *d, bytlen, *newlen) */ 301 posix_path = (char *) safemalloc(wlen*3); 302 Perl_utf16_to_utf8(aTHX_ (U8*)&wpath, (U8*)posix_path, (I32)wlen*2, (I32*)&len); 303 /* 304 wlen = wcsrtombs(NULL, (const wchar_t **)&wbuf, wlen, NULL); 305 posix_path = (char *) safemalloc(wlen+1); 306 wcsrtombs(posix_path, (const wchar_t **)&wbuf, wlen, NULL); 307 */ 308 } else { 309 int what = absolute_flag ? CCP_WIN_A_TO_POSIX : CCP_WIN_A_TO_POSIX | CCP_RELATIVE; 310 posix_path = (char *) safemalloc (len + 260 + 1001); 311 err = cygwin_conv_path(what, src_path, posix_path, len + 260 + 1001); 312 if (err == ENOSPC) { /* our space assumption was wrong, not enough space */ 313 int newlen = cygwin_conv_path(what, src_path, posix_path, 0); 314 posix_path = (char *) realloc(&posix_path, newlen); 315 err = cygwin_conv_path(what, src_path, posix_path, newlen); 316 } 317 } 318 #else 319 posix_path = (char *) safemalloc (len + 260 + 1001); 320 if (absolute_flag) 321 err = cygwin_conv_to_full_posix_path(src_path, posix_path); 322 else 323 err = cygwin_conv_to_posix_path(src_path, posix_path); 324 #endif 325 if (!err) { 326 EXTEND(SP, 1); 327 ST(0) = sv_2mortal(newSVpv(posix_path, 0)); 328 if (isutf8) { /* src was utf-8, so result should also */ 329 /* TODO: convert ANSI (local windows encoding) to utf-8 on cygwin-1.5 */ 330 SvUTF8_on(ST(0)); 331 } 332 safefree(posix_path); 333 XSRETURN(1); 334 } else { 335 safefree(posix_path); 336 XSRETURN_UNDEF; 337 } 338 } 339 340 XS(XS_Cygwin_posix_to_win_path) 341 { 342 dXSARGS; 343 int absolute_flag = 0; 344 STRLEN len; 345 int err = 0; 346 char *src_path, *win_path; 347 int isutf8 = 0; 348 349 if (items < 1 || items > 2) 350 Perl_croak(aTHX_ "Usage: Cygwin::posix_to_win_path(pathname, [absolute])"); 351 352 src_path = SvPVx(ST(0), len); 353 if (items == 2) 354 absolute_flag = SvTRUE(ST(1)); 355 356 if (!len) 357 Perl_croak(aTHX_ "can't convert empty path"); 358 isutf8 = SvUTF8(ST(0)); 359 #if (CYGWIN_VERSION_API_MINOR >= 181) 360 /* Check utf8 flag and use wide api then. 361 Size calculation: On overflow let cygwin_conv_path calculate the final size. 362 */ 363 if (isutf8) { 364 int what = absolute_flag ? CCP_POSIX_TO_WIN_W : CCP_POSIX_TO_WIN_W | CCP_RELATIVE; 365 int wlen = sizeof(wchar_t)*(len + 260 + 1001); 366 wchar_t *wpath = (wchar_t *) safemalloc(sizeof(wchar_t)*len); 367 wchar_t *wbuf = (wchar_t *) safemalloc(wlen); 368 char *oldlocale = setlocale(LC_CTYPE, NULL); 369 setlocale(LC_CTYPE, "utf-8"); 370 if (!IN_BYTES) { 371 mbstate_t mbs; 372 /* utf8_to_uvchr_buf(src_path, src_path + wlen, wpath) or Encoding::_utf8_to_bytes(sv, "UCS-2BE"); */ 373 wlen = mbsrtowcs(wpath, (const char**)&src_path, wlen, &mbs); 374 if (wlen > 0) 375 err = cygwin_conv_path(what, wpath, wbuf, wlen); 376 } else { /* use bytes; assume already ucs-2 encoded bytestream */ 377 err = cygwin_conv_path(what, src_path, wbuf, wlen); 378 } 379 if (err == ENOSPC) { /* our space assumption was wrong, not enough space */ 380 int newlen = cygwin_conv_path(what, wpath, wbuf, 0); 381 wbuf = (wchar_t *) realloc(&wbuf, newlen); 382 err = cygwin_conv_path(what, wpath, wbuf, newlen); 383 wlen = newlen; 384 } 385 /* also see utf8.c: Perl_utf16_to_utf8() or Encoding::_bytes_to_utf8(sv, "UCS-2BE"); */ 386 wlen = wcsrtombs(NULL, (const wchar_t **)&wbuf, wlen, NULL); 387 win_path = (char *) safemalloc(wlen+1); 388 wcsrtombs(win_path, (const wchar_t **)&wbuf, wlen, NULL); 389 if (oldlocale) setlocale(LC_CTYPE, oldlocale); 390 else setlocale(LC_CTYPE, "C"); 391 } else { 392 int what = absolute_flag ? CCP_POSIX_TO_WIN_A : CCP_POSIX_TO_WIN_A | CCP_RELATIVE; 393 win_path = (char *) safemalloc(len + 260 + 1001); 394 err = cygwin_conv_path(what, src_path, win_path, len + 260 + 1001); 395 if (err == ENOSPC) { /* our space assumption was wrong, not enough space */ 396 int newlen = cygwin_conv_path(what, src_path, win_path, 0); 397 win_path = (char *) realloc(&win_path, newlen); 398 err = cygwin_conv_path(what, src_path, win_path, newlen); 399 } 400 } 401 #else 402 if (isutf8) 403 Perl_warn(aTHX_ "can't convert utf8 path"); 404 win_path = (char *) safemalloc(len + 260 + 1001); 405 if (absolute_flag) 406 err = cygwin_conv_to_full_win32_path(src_path, win_path); 407 else 408 err = cygwin_conv_to_win32_path(src_path, win_path); 409 #endif 410 if (!err) { 411 EXTEND(SP, 1); 412 ST(0) = sv_2mortal(newSVpv(win_path, 0)); 413 if (isutf8) { 414 SvUTF8_on(ST(0)); 415 } 416 safefree(win_path); 417 XSRETURN(1); 418 } else { 419 safefree(win_path); 420 XSRETURN_UNDEF; 421 } 422 } 423 424 XS(XS_Cygwin_mount_table) 425 { 426 dXSARGS; 427 struct mntent *mnt; 428 429 if (items != 0) 430 Perl_croak(aTHX_ "Usage: Cygwin::mount_table"); 431 /* => array of [mnt_dir mnt_fsname mnt_type mnt_opts] */ 432 433 setmntent (0, 0); 434 while ((mnt = getmntent (0))) { 435 AV* av = newAV(); 436 av_push(av, newSVpvn(mnt->mnt_dir, strlen(mnt->mnt_dir))); 437 av_push(av, newSVpvn(mnt->mnt_fsname, strlen(mnt->mnt_fsname))); 438 av_push(av, newSVpvn(mnt->mnt_type, strlen(mnt->mnt_type))); 439 av_push(av, newSVpvn(mnt->mnt_opts, strlen(mnt->mnt_opts))); 440 XPUSHs(sv_2mortal(newRV_noinc((SV*)av))); 441 } 442 endmntent (0); 443 PUTBACK; 444 } 445 446 XS(XS_Cygwin_mount_flags) 447 { 448 dXSARGS; 449 char *pathname; 450 char flags[PATH_MAX]; 451 flags[0] = '\0'; 452 453 if (items != 1) 454 Perl_croak(aTHX_ "Usage: Cygwin::mount_flags( mnt_dir | '/cygdrive' )"); 455 456 pathname = SvPV_nolen(ST(0)); 457 458 if (!strcmp(pathname, "/cygdrive")) { 459 char user[PATH_MAX]; 460 char system[PATH_MAX]; 461 char user_flags[PATH_MAX]; 462 char system_flags[PATH_MAX]; 463 464 cygwin_internal (CW_GET_CYGDRIVE_INFO, user, system, 465 user_flags, system_flags); 466 467 if (strlen(user) > 0) { 468 sprintf(flags, "%s,cygdrive,%s", user_flags, user); 469 } else { 470 sprintf(flags, "%s,cygdrive,%s", system_flags, system); 471 } 472 473 ST(0) = sv_2mortal(newSVpv(flags, 0)); 474 XSRETURN(1); 475 476 } else { 477 struct mntent *mnt; 478 int found = 0; 479 setmntent (0, 0); 480 while ((mnt = getmntent (0))) { 481 if (!strcmp(pathname, mnt->mnt_dir)) { 482 strcpy(flags, mnt->mnt_type); 483 if (strlen(mnt->mnt_opts) > 0) { 484 strcat(flags, ","); 485 strcat(flags, mnt->mnt_opts); 486 } 487 found++; 488 break; 489 } 490 } 491 endmntent (0); 492 493 /* Check if arg is the current volume moint point if not default, 494 * and then use CW_GET_CYGDRIVE_INFO also. 495 */ 496 if (!found) { 497 char user[PATH_MAX]; 498 char system[PATH_MAX]; 499 char user_flags[PATH_MAX]; 500 char system_flags[PATH_MAX]; 501 502 cygwin_internal (CW_GET_CYGDRIVE_INFO, user, system, 503 user_flags, system_flags); 504 505 if (strlen(user) > 0) { 506 if (strcmp(user,pathname)) { 507 sprintf(flags, "%s,cygdrive,%s", user_flags, user); 508 found++; 509 } 510 } else { 511 if (strcmp(user,pathname)) { 512 sprintf(flags, "%s,cygdrive,%s", system_flags, system); 513 found++; 514 } 515 } 516 } 517 if (found) { 518 ST(0) = sv_2mortal(newSVpv(flags, 0)); 519 XSRETURN(1); 520 } else { 521 XSRETURN_UNDEF; 522 } 523 } 524 } 525 526 XS(XS_Cygwin_is_binmount) 527 { 528 dXSARGS; 529 char *pathname; 530 531 if (items != 1) 532 Perl_croak(aTHX_ "Usage: Cygwin::is_binmount(pathname)"); 533 534 pathname = SvPV_nolen(ST(0)); 535 536 ST(0) = boolSV(cygwin_internal(CW_GET_BINMODE, pathname)); 537 XSRETURN(1); 538 } 539 540 XS(XS_Cygwin_sync_winenv){ cygwin_internal(CW_SYNC_WINENV); } 541 542 void 543 init_os_extras(void) 544 { 545 dTHX; 546 char const *file = __FILE__; 547 void *handle; 548 549 newXS("Cwd::cwd", Cygwin_cwd, file); 550 newXSproto("Cygwin::winpid_to_pid", XS_Cygwin_winpid_to_pid, file, "$"); 551 newXSproto("Cygwin::pid_to_winpid", XS_Cygwin_pid_to_winpid, file, "$"); 552 newXSproto("Cygwin::win_to_posix_path", XS_Cygwin_win_to_posix_path, file, "$;$"); 553 newXSproto("Cygwin::posix_to_win_path", XS_Cygwin_posix_to_win_path, file, "$;$"); 554 newXSproto("Cygwin::mount_table", XS_Cygwin_mount_table, file, ""); 555 newXSproto("Cygwin::mount_flags", XS_Cygwin_mount_flags, file, "$"); 556 newXSproto("Cygwin::is_binmount", XS_Cygwin_is_binmount, file, "$"); 557 newXS("Cygwin::sync_winenv", XS_Cygwin_sync_winenv, file); 558 559 /* Initialize Win32CORE if it has been statically linked. */ 560 handle = dlopen(NULL, RTLD_LAZY); 561 if (handle) { 562 void (*pfn_init)(pTHX); 563 pfn_init = (void (*)(pTHX))dlsym(handle, "init_Win32CORE"); 564 if (pfn_init) 565 pfn_init(aTHX); 566 dlclose(handle); 567 } 568 } 569