| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: utilsunx.cpp |
| 3 | // Purpose: generic Unix implementation of many wx functions |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Id: $Id$ |
| 6 | // Copyright: (c) 1998 Robert Roebling, Vadim Zeitlin |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | // ============================================================================ |
| 11 | // declarations |
| 12 | // ============================================================================ |
| 13 | |
| 14 | // ---------------------------------------------------------------------------- |
| 15 | // headers |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | |
| 18 | #include "wx/defs.h" |
| 19 | #include "wx/string.h" |
| 20 | |
| 21 | #include "wx/intl.h" |
| 22 | #include "wx/log.h" |
| 23 | #include "wx/app.h" |
| 24 | |
| 25 | #include "wx/utils.h" |
| 26 | #include "wx/process.h" |
| 27 | #include "wx/thread.h" |
| 28 | |
| 29 | #include "wx/stream.h" |
| 30 | |
| 31 | #if wxUSE_GUI |
| 32 | #include "wx/unix/execute.h" |
| 33 | #endif |
| 34 | |
| 35 | // SGI signal.h defines signal handler arguments differently depending on |
| 36 | // whether _LANGUAGE_C_PLUS_PLUS is set or not - do set it |
| 37 | #if defined(__SGI__) && !defined(_LANGUAGE_C_PLUS_PLUS) |
| 38 | #define _LANGUAGE_C_PLUS_PLUS 1 |
| 39 | #endif // SGI hack |
| 40 | |
| 41 | #include <stdarg.h> |
| 42 | #include <dirent.h> |
| 43 | #include <string.h> |
| 44 | #include <sys/stat.h> |
| 45 | #include <sys/types.h> |
| 46 | #include <unistd.h> |
| 47 | #include <sys/wait.h> |
| 48 | #include <pwd.h> |
| 49 | #include <errno.h> |
| 50 | #include <netdb.h> |
| 51 | #include <signal.h> |
| 52 | #include <fcntl.h> // for O_WRONLY and friends |
| 53 | #include <time.h> // nanosleep() and/or usleep() |
| 54 | #include <ctype.h> // isspace() |
| 55 | #include <sys/time.h> // needed for FD_SETSIZE |
| 56 | |
| 57 | #ifdef HAVE_UNAME |
| 58 | #include <sys/utsname.h> // for uname() |
| 59 | #endif // HAVE_UNAME |
| 60 | |
| 61 | // ---------------------------------------------------------------------------- |
| 62 | // conditional compilation |
| 63 | // ---------------------------------------------------------------------------- |
| 64 | |
| 65 | // many versions of Unices have this function, but it is not defined in system |
| 66 | // headers - please add your system here if it is the case for your OS. |
| 67 | // SunOS < 5.6 (i.e. Solaris < 2.6) and DG-UX are like this. |
| 68 | #if !defined(HAVE_USLEEP) && \ |
| 69 | (defined(__SUN__) && !defined(__SunOs_5_6) && \ |
| 70 | !defined(__SunOs_5_7) && !defined(__SUNPRO_CC)) || \ |
| 71 | defined(__osf__) || defined(__EMX__) |
| 72 | extern "C" |
| 73 | { |
| 74 | #ifdef __SUN__ |
| 75 | int usleep(unsigned int usec); |
| 76 | #else // !Sun |
| 77 | #ifdef __EMX__ |
| 78 | /* I copied this from the XFree86 diffs. AV. */ |
| 79 | #define INCL_DOSPROCESS |
| 80 | #include <os2.h> |
| 81 | inline void usleep(unsigned long delay) |
| 82 | { |
| 83 | DosSleep(delay ? (delay/1000l) : 1l); |
| 84 | } |
| 85 | #else // !Sun && !EMX |
| 86 | void usleep(unsigned long usec); |
| 87 | #endif |
| 88 | #endif // Sun/EMX/Something else |
| 89 | }; |
| 90 | |
| 91 | #define HAVE_USLEEP 1 |
| 92 | #endif // Unices without usleep() |
| 93 | |
| 94 | // ============================================================================ |
| 95 | // implementation |
| 96 | // ============================================================================ |
| 97 | |
| 98 | // ---------------------------------------------------------------------------- |
| 99 | // sleeping |
| 100 | // ---------------------------------------------------------------------------- |
| 101 | |
| 102 | void wxSleep(int nSecs) |
| 103 | { |
| 104 | sleep(nSecs); |
| 105 | } |
| 106 | |
| 107 | void wxUsleep(unsigned long milliseconds) |
| 108 | { |
| 109 | #if defined(HAVE_NANOSLEEP) |
| 110 | timespec tmReq; |
| 111 | tmReq.tv_sec = (time_t)(milliseconds / 1000); |
| 112 | tmReq.tv_nsec = (milliseconds % 1000) * 1000 * 1000; |
| 113 | |
| 114 | // we're not interested in remaining time nor in return value |
| 115 | (void)nanosleep(&tmReq, (timespec *)NULL); |
| 116 | #elif defined(HAVE_USLEEP) |
| 117 | // uncomment this if you feel brave or if you are sure that your version |
| 118 | // of Solaris has a safe usleep() function but please notice that usleep() |
| 119 | // is known to lead to crashes in MT programs in Solaris 2.[67] and is not |
| 120 | // documented as MT-Safe |
| 121 | #if defined(__SUN__) && wxUSE_THREADS |
| 122 | #error "usleep() cannot be used in MT programs under Solaris." |
| 123 | #endif // Sun |
| 124 | |
| 125 | usleep(milliseconds * 1000); // usleep(3) wants microseconds |
| 126 | #elif defined(HAVE_SLEEP) |
| 127 | // under BeOS sleep() takes seconds (what about other platforms, if any?) |
| 128 | sleep(milliseconds * 1000); |
| 129 | #else // !sleep function |
| 130 | #error "usleep() or nanosleep() function required for wxUsleep" |
| 131 | #endif // sleep function |
| 132 | } |
| 133 | |
| 134 | // ---------------------------------------------------------------------------- |
| 135 | // process management |
| 136 | // ---------------------------------------------------------------------------- |
| 137 | |
| 138 | int wxKill(long pid, wxSignal sig) |
| 139 | { |
| 140 | return kill((pid_t)pid, (int)sig); |
| 141 | } |
| 142 | |
| 143 | #define WXEXECUTE_NARGS 127 |
| 144 | |
| 145 | long wxExecute( const wxString& command, bool sync, wxProcess *process ) |
| 146 | { |
| 147 | wxCHECK_MSG( !command.IsEmpty(), 0, wxT("can't exec empty command") ); |
| 148 | |
| 149 | int argc = 0; |
| 150 | wxChar *argv[WXEXECUTE_NARGS]; |
| 151 | wxString argument; |
| 152 | const wxChar *cptr = command.c_str(); |
| 153 | wxChar quotechar = wxT('\0'); // is arg quoted? |
| 154 | bool escaped = FALSE; |
| 155 | |
| 156 | // split the command line in arguments |
| 157 | do |
| 158 | { |
| 159 | argument=wxT(""); |
| 160 | quotechar = wxT('\0'); |
| 161 | |
| 162 | // eat leading whitespace: |
| 163 | while ( wxIsspace(*cptr) ) |
| 164 | cptr++; |
| 165 | |
| 166 | if ( *cptr == wxT('\'') || *cptr == wxT('"') ) |
| 167 | quotechar = *cptr++; |
| 168 | |
| 169 | do |
| 170 | { |
| 171 | if ( *cptr == wxT('\\') && ! escaped ) |
| 172 | { |
| 173 | escaped = TRUE; |
| 174 | cptr++; |
| 175 | continue; |
| 176 | } |
| 177 | |
| 178 | // all other characters: |
| 179 | argument += *cptr++; |
| 180 | escaped = FALSE; |
| 181 | |
| 182 | // have we reached the end of the argument? |
| 183 | if ( (*cptr == quotechar && ! escaped) |
| 184 | || (quotechar == wxT('\0') && wxIsspace(*cptr)) |
| 185 | || *cptr == wxT('\0') ) |
| 186 | { |
| 187 | wxASSERT_MSG( argc < WXEXECUTE_NARGS, |
| 188 | wxT("too many arguments in wxExecute") ); |
| 189 | |
| 190 | argv[argc] = new wxChar[argument.length() + 1]; |
| 191 | wxStrcpy(argv[argc], argument.c_str()); |
| 192 | argc++; |
| 193 | |
| 194 | // if not at end of buffer, swallow last character: |
| 195 | if(*cptr) |
| 196 | cptr++; |
| 197 | |
| 198 | break; // done with this one, start over |
| 199 | } |
| 200 | } while(*cptr); |
| 201 | } while(*cptr); |
| 202 | argv[argc] = NULL; |
| 203 | |
| 204 | // do execute the command |
| 205 | long lRc = wxExecute(argv, sync, process); |
| 206 | |
| 207 | // clean up |
| 208 | argc = 0; |
| 209 | while( argv[argc] ) |
| 210 | delete [] argv[argc++]; |
| 211 | |
| 212 | return lRc; |
| 213 | } |
| 214 | |
| 215 | // ---------------------------------------------------------------------------- |
| 216 | // wxShell |
| 217 | // ---------------------------------------------------------------------------- |
| 218 | |
| 219 | static wxString wxMakeShellCommand(const wxString& command) |
| 220 | { |
| 221 | wxString cmd; |
| 222 | if ( !command ) |
| 223 | { |
| 224 | // just an interactive shell |
| 225 | cmd = _T("xterm"); |
| 226 | } |
| 227 | else |
| 228 | { |
| 229 | // execute command in a shell |
| 230 | cmd << _T("/bin/sh -c '") << command << _T('\''); |
| 231 | } |
| 232 | |
| 233 | return cmd; |
| 234 | } |
| 235 | |
| 236 | bool wxShell(const wxString& command) |
| 237 | { |
| 238 | return wxExecute(wxMakeShellCommand(command), TRUE /* sync */) == 0; |
| 239 | } |
| 240 | |
| 241 | bool wxShell(const wxString& command, wxArrayString& output) |
| 242 | { |
| 243 | wxCHECK_MSG( !!command, FALSE, _T("can't exec shell non interactively") ); |
| 244 | |
| 245 | return wxExecute(wxMakeShellCommand(command), output); |
| 246 | } |
| 247 | |
| 248 | #if wxUSE_GUI |
| 249 | |
| 250 | void wxHandleProcessTermination(wxEndProcessData *proc_data) |
| 251 | { |
| 252 | int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid); |
| 253 | |
| 254 | // waitpid is POSIX so should be available everywhere, however on older |
| 255 | // systems wait() might be used instead in a loop (until the right pid |
| 256 | // terminates) |
| 257 | int status = 0; |
| 258 | int rc; |
| 259 | |
| 260 | // wait for child termination and if waitpid() was interrupted, try again |
| 261 | do |
| 262 | { |
| 263 | rc = waitpid(pid, &status, 0); |
| 264 | } |
| 265 | while ( rc == -1 && errno == EINTR ); |
| 266 | |
| 267 | |
| 268 | if( rc == -1 || ! (WIFEXITED(status) || WIFSIGNALED(status)) ) |
| 269 | { |
| 270 | wxLogSysError(_("Waiting for subprocess termination failed")); |
| 271 | /* AFAIK, this can only happen if something went wrong within |
| 272 | wxGTK, i.e. due to a race condition or some serious bug. |
| 273 | After having fixed the order of statements in |
| 274 | GTK_EndProcessDetector(). (KB) |
| 275 | */ |
| 276 | } |
| 277 | else |
| 278 | { |
| 279 | // notify user about termination if required |
| 280 | if (proc_data->process) |
| 281 | { |
| 282 | proc_data->process->OnTerminate(proc_data->pid, |
| 283 | WEXITSTATUS(status)); |
| 284 | } |
| 285 | // clean up |
| 286 | if ( proc_data->pid > 0 ) |
| 287 | { |
| 288 | delete proc_data; |
| 289 | } |
| 290 | else |
| 291 | { |
| 292 | // wxExecute() will know about it |
| 293 | proc_data->exitcode = status; |
| 294 | |
| 295 | proc_data->pid = 0; |
| 296 | } |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | #endif // wxUSE_GUI |
| 301 | |
| 302 | // ---------------------------------------------------------------------------- |
| 303 | // wxStream classes to support IO redirection in wxExecute |
| 304 | // ---------------------------------------------------------------------------- |
| 305 | |
| 306 | class wxProcessFileInputStream : public wxInputStream |
| 307 | { |
| 308 | public: |
| 309 | wxProcessFileInputStream(int fd) { m_fd = fd; } |
| 310 | ~wxProcessFileInputStream() { close(m_fd); } |
| 311 | |
| 312 | virtual bool Eof() const; |
| 313 | |
| 314 | protected: |
| 315 | size_t OnSysRead(void *buffer, size_t bufsize); |
| 316 | |
| 317 | protected: |
| 318 | int m_fd; |
| 319 | }; |
| 320 | |
| 321 | class wxProcessFileOutputStream : public wxOutputStream |
| 322 | { |
| 323 | public: |
| 324 | wxProcessFileOutputStream(int fd) { m_fd = fd; } |
| 325 | ~wxProcessFileOutputStream() { close(m_fd); } |
| 326 | |
| 327 | protected: |
| 328 | size_t OnSysWrite(const void *buffer, size_t bufsize); |
| 329 | |
| 330 | protected: |
| 331 | int m_fd; |
| 332 | }; |
| 333 | |
| 334 | bool wxProcessFileInputStream::Eof() const |
| 335 | { |
| 336 | if ( m_lasterror == wxSTREAM_EOF ) |
| 337 | return TRUE; |
| 338 | |
| 339 | // check if there is any input available |
| 340 | struct timeval tv; |
| 341 | tv.tv_sec = 0; |
| 342 | tv.tv_usec = 0; |
| 343 | |
| 344 | fd_set readfds; |
| 345 | FD_ZERO(&readfds); |
| 346 | FD_SET(m_fd, &readfds); |
| 347 | switch ( select(m_fd + 1, &readfds, NULL, NULL, &tv) ) |
| 348 | { |
| 349 | case -1: |
| 350 | wxLogSysError(_("Impossible to get child process input")); |
| 351 | // fall through |
| 352 | |
| 353 | case 0: |
| 354 | return TRUE; |
| 355 | |
| 356 | default: |
| 357 | wxFAIL_MSG(_T("unexpected select() return value")); |
| 358 | // still fall through |
| 359 | |
| 360 | case 1: |
| 361 | // input available: check if there is any |
| 362 | return wxInputStream::Eof(); |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | size_t wxProcessFileInputStream::OnSysRead(void *buffer, size_t bufsize) |
| 367 | { |
| 368 | int ret = read(m_fd, buffer, bufsize); |
| 369 | if ( ret == 0 ) |
| 370 | { |
| 371 | m_lasterror = wxSTREAM_EOF; |
| 372 | } |
| 373 | else if ( ret == -1 ) |
| 374 | { |
| 375 | m_lasterror = wxSTREAM_READ_ERROR; |
| 376 | ret = 0; |
| 377 | } |
| 378 | else |
| 379 | { |
| 380 | m_lasterror = wxSTREAM_NOERROR; |
| 381 | } |
| 382 | |
| 383 | return ret; |
| 384 | } |
| 385 | |
| 386 | size_t wxProcessFileOutputStream::OnSysWrite(const void *buffer, size_t bufsize) |
| 387 | { |
| 388 | int ret = write(m_fd, buffer, bufsize); |
| 389 | if ( ret == -1 ) |
| 390 | { |
| 391 | m_lasterror = wxSTREAM_WRITE_ERROR; |
| 392 | ret = 0; |
| 393 | } |
| 394 | else |
| 395 | { |
| 396 | m_lasterror = wxSTREAM_NOERROR; |
| 397 | } |
| 398 | |
| 399 | return ret; |
| 400 | } |
| 401 | |
| 402 | long wxExecute(wxChar **argv, |
| 403 | bool sync, |
| 404 | wxProcess *process) |
| 405 | { |
| 406 | // for the sync execution, we return -1 to indicate failure, but for async |
| 407 | // cse we return 0 which is never a valid PID |
| 408 | long errorRetCode = sync ? -1 : 0; |
| 409 | |
| 410 | wxCHECK_MSG( *argv, errorRetCode, wxT("can't exec empty command") ); |
| 411 | |
| 412 | #if wxUSE_UNICODE |
| 413 | int mb_argc = 0; |
| 414 | char *mb_argv[WXEXECUTE_NARGS]; |
| 415 | |
| 416 | while (argv[mb_argc]) |
| 417 | { |
| 418 | wxWX2MBbuf mb_arg = wxConvertWX2MB(argv[mb_argc]); |
| 419 | mb_argv[mb_argc] = strdup(mb_arg); |
| 420 | mb_argc++; |
| 421 | } |
| 422 | mb_argv[mb_argc] = (char *) NULL; |
| 423 | |
| 424 | // this macro will free memory we used above |
| 425 | #define ARGS_CLEANUP \ |
| 426 | for ( mb_argc = 0; mb_argv[mb_argc]; mb_argc++ ) \ |
| 427 | free(mb_argv[mb_argc]) |
| 428 | #else // ANSI |
| 429 | // no need for cleanup |
| 430 | #define ARGS_CLEANUP |
| 431 | |
| 432 | wxChar **mb_argv = argv; |
| 433 | #endif // Unicode/ANSI |
| 434 | |
| 435 | #if wxUSE_GUI |
| 436 | // create pipes |
| 437 | int end_proc_detect[2]; |
| 438 | if ( pipe(end_proc_detect) == -1 ) |
| 439 | { |
| 440 | wxLogSysError( _("Pipe creation failed") ); |
| 441 | wxLogError( _("Failed to execute '%s'\n"), *argv ); |
| 442 | |
| 443 | ARGS_CLEANUP; |
| 444 | |
| 445 | return errorRetCode; |
| 446 | } |
| 447 | #endif // wxUSE_GUI |
| 448 | |
| 449 | // pipes for inter process communication |
| 450 | int pipeIn[2], // stdin |
| 451 | pipeOut[2], // stdout |
| 452 | pipeErr[2]; // stderr |
| 453 | |
| 454 | pipeIn[0] = pipeIn[1] = |
| 455 | pipeOut[0] = pipeOut[1] = |
| 456 | pipeErr[0] = pipeErr[1] = -1; |
| 457 | |
| 458 | if ( process && process->IsRedirected() ) |
| 459 | { |
| 460 | if ( pipe(pipeIn) == -1 || pipe(pipeOut) == -1 || pipe(pipeErr) == -1 ) |
| 461 | { |
| 462 | #if wxUSE_GUI |
| 463 | // free previously allocated resources |
| 464 | close(end_proc_detect[0]); |
| 465 | close(end_proc_detect[1]); |
| 466 | #endif // wxUSE_GUI |
| 467 | |
| 468 | wxLogSysError( _("Pipe creation failed") ); |
| 469 | wxLogError( _("Failed to execute '%s'\n"), *argv ); |
| 470 | |
| 471 | ARGS_CLEANUP; |
| 472 | |
| 473 | return errorRetCode; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | // fork the process |
| 478 | #ifdef HAVE_VFORK |
| 479 | pid_t pid = vfork(); |
| 480 | #else |
| 481 | pid_t pid = fork(); |
| 482 | #endif |
| 483 | |
| 484 | if ( pid == -1 ) // error? |
| 485 | { |
| 486 | #if wxUSE_GUI |
| 487 | close(end_proc_detect[0]); |
| 488 | close(end_proc_detect[1]); |
| 489 | close(pipeIn[0]); |
| 490 | close(pipeIn[1]); |
| 491 | close(pipeOut[0]); |
| 492 | close(pipeOut[1]); |
| 493 | close(pipeErr[0]); |
| 494 | close(pipeErr[1]); |
| 495 | #endif // wxUSE_GUI |
| 496 | |
| 497 | wxLogSysError( _("Fork failed") ); |
| 498 | |
| 499 | ARGS_CLEANUP; |
| 500 | |
| 501 | return errorRetCode; |
| 502 | } |
| 503 | else if ( pid == 0 ) // we're in child |
| 504 | { |
| 505 | #if wxUSE_GUI |
| 506 | close(end_proc_detect[0]); // close reading side |
| 507 | #endif // wxUSE_GUI |
| 508 | |
| 509 | // These lines close the open file descriptors to to avoid any |
| 510 | // input/output which might block the process or irritate the user. If |
| 511 | // one wants proper IO for the subprocess, the right thing to do is to |
| 512 | // start an xterm executing it. |
| 513 | if ( !sync ) |
| 514 | { |
| 515 | for ( int fd = 0; fd < FD_SETSIZE; fd++ ) |
| 516 | { |
| 517 | if ( fd == pipeIn[0] || fd == pipeOut[1] || fd == pipeErr[1] |
| 518 | #if wxUSE_GUI |
| 519 | || fd == end_proc_detect[1] |
| 520 | #endif // wxUSE_GUI |
| 521 | ) |
| 522 | { |
| 523 | // don't close this one, we still need it |
| 524 | continue; |
| 525 | } |
| 526 | |
| 527 | // leave stderr opened too, it won't do any hurm |
| 528 | if ( fd != STDERR_FILENO ) |
| 529 | close(fd); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | // redirect stdio, stdout and stderr |
| 534 | if ( pipeIn[0] != -1 ) |
| 535 | { |
| 536 | if ( dup2(pipeIn[0], STDIN_FILENO) == -1 || |
| 537 | dup2(pipeOut[1], STDOUT_FILENO) == -1 || |
| 538 | dup2(pipeErr[1], STDERR_FILENO) == -1 ) |
| 539 | { |
| 540 | wxLogSysError(_("Failed to redirect child process input/output")); |
| 541 | } |
| 542 | |
| 543 | close(pipeIn[0]); |
| 544 | close(pipeOut[1]); |
| 545 | close(pipeErr[1]); |
| 546 | } |
| 547 | |
| 548 | execvp (*mb_argv, mb_argv); |
| 549 | |
| 550 | // there is no return after successful exec() |
| 551 | _exit(-1); |
| 552 | } |
| 553 | else // we're in parent |
| 554 | { |
| 555 | ARGS_CLEANUP; |
| 556 | |
| 557 | // pipe initialization: construction of the wxStreams |
| 558 | if ( process && process->IsRedirected() ) |
| 559 | { |
| 560 | // These two streams are relative to this process. |
| 561 | wxOutputStream *outStream = new wxProcessFileOutputStream(pipeIn[1]); |
| 562 | wxInputStream *inStream = new wxProcessFileInputStream(pipeOut[0]); |
| 563 | wxInputStream *errStream = new wxProcessFileInputStream(pipeErr[0]); |
| 564 | |
| 565 | close(pipeIn[0]); // close reading side |
| 566 | close(pipeOut[1]); // close writing side |
| 567 | close(pipeErr[1]); // close writing side |
| 568 | |
| 569 | process->SetPipeStreams(inStream, outStream, errStream); |
| 570 | } |
| 571 | |
| 572 | #if wxUSE_GUI |
| 573 | wxEndProcessData *data = new wxEndProcessData; |
| 574 | |
| 575 | if ( sync ) |
| 576 | { |
| 577 | // we may have process for capturing the program output, but it's |
| 578 | // not used in wxEndProcessData in the case of sync execution |
| 579 | data->process = NULL; |
| 580 | |
| 581 | // sync execution: indicate it by negating the pid |
| 582 | data->pid = -pid; |
| 583 | data->tag = wxAddProcessCallback(data, end_proc_detect[0]); |
| 584 | |
| 585 | close(end_proc_detect[1]); // close writing side |
| 586 | |
| 587 | wxBusyCursor bc; |
| 588 | wxWindowDisabler wd; |
| 589 | |
| 590 | // it will be set to 0 from GTK_EndProcessDetector |
| 591 | while (data->pid != 0) |
| 592 | wxYield(); |
| 593 | |
| 594 | int exitcode = data->exitcode; |
| 595 | |
| 596 | delete data; |
| 597 | |
| 598 | return exitcode; |
| 599 | } |
| 600 | else // async execution |
| 601 | { |
| 602 | // async execution, nothing special to do - caller will be |
| 603 | // notified about the process termination if process != NULL, data |
| 604 | // will be deleted in GTK_EndProcessDetector |
| 605 | data->process = process; |
| 606 | data->pid = pid; |
| 607 | data->tag = wxAddProcessCallback(data, end_proc_detect[0]); |
| 608 | |
| 609 | close(end_proc_detect[1]); // close writing side |
| 610 | |
| 611 | return pid; |
| 612 | } |
| 613 | #else // !wxUSE_GUI |
| 614 | wxASSERT_MSG( sync, wxT("async execution not supported yet") ); |
| 615 | |
| 616 | int exitcode = 0; |
| 617 | if ( waitpid(pid, &exitcode, 0) == -1 || !WIFEXITED(exitcode) ) |
| 618 | { |
| 619 | wxLogSysError(_("Waiting for subprocess termination failed")); |
| 620 | } |
| 621 | |
| 622 | return exitcode; |
| 623 | #endif // wxUSE_GUI |
| 624 | } |
| 625 | #ifdef __VMS |
| 626 | // VMS does not recognise exit as a return and complains about |
| 627 | // a missing return |
| 628 | // I think VMS is wrong in this |
| 629 | // JJ |
| 630 | return 0; |
| 631 | #endif |
| 632 | } |
| 633 | |
| 634 | #undef ARGS_CLEANUP |
| 635 | |
| 636 | // ---------------------------------------------------------------------------- |
| 637 | // file and directory functions |
| 638 | // ---------------------------------------------------------------------------- |
| 639 | |
| 640 | const wxChar* wxGetHomeDir( wxString *home ) |
| 641 | { |
| 642 | *home = wxGetUserHome( wxString() ); |
| 643 | wxString tmp; |
| 644 | if ( home->IsEmpty() ) |
| 645 | *home = wxT("/"); |
| 646 | #ifdef __VMS |
| 647 | tmp = *home; |
| 648 | if ( tmp.Last() != wxT(']')) |
| 649 | if ( tmp.Last() != wxT('/')) *home << wxT('/'); |
| 650 | #endif |
| 651 | return home->c_str(); |
| 652 | } |
| 653 | |
| 654 | #if wxUSE_UNICODE |
| 655 | const wxMB2WXbuf wxGetUserHome( const wxString &user ) |
| 656 | #else // just for binary compatibility -- there is no 'const' here |
| 657 | char *wxGetUserHome( const wxString &user ) |
| 658 | #endif |
| 659 | { |
| 660 | struct passwd *who = (struct passwd *) NULL; |
| 661 | |
| 662 | if ( !user ) |
| 663 | { |
| 664 | wxChar *ptr; |
| 665 | |
| 666 | if ((ptr = wxGetenv(wxT("HOME"))) != NULL) |
| 667 | { |
| 668 | return ptr; |
| 669 | } |
| 670 | if ((ptr = wxGetenv(wxT("USER"))) != NULL || (ptr = wxGetenv(wxT("LOGNAME"))) != NULL) |
| 671 | { |
| 672 | who = getpwnam(wxConvertWX2MB(ptr)); |
| 673 | } |
| 674 | |
| 675 | // We now make sure the the user exists! |
| 676 | if (who == NULL) |
| 677 | { |
| 678 | who = getpwuid(getuid()); |
| 679 | } |
| 680 | } |
| 681 | else |
| 682 | { |
| 683 | who = getpwnam (user.mb_str()); |
| 684 | } |
| 685 | |
| 686 | return wxConvertMB2WX(who ? who->pw_dir : 0); |
| 687 | } |
| 688 | |
| 689 | // ---------------------------------------------------------------------------- |
| 690 | // network and user id routines |
| 691 | // ---------------------------------------------------------------------------- |
| 692 | |
| 693 | // retrieve either the hostname or FQDN depending on platform (caller must |
| 694 | // check whether it's one or the other, this is why this function is for |
| 695 | // private use only) |
| 696 | static bool wxGetHostNameInternal(wxChar *buf, int sz) |
| 697 | { |
| 698 | wxCHECK_MSG( buf, FALSE, wxT("NULL pointer in wxGetHostNameInternal") ); |
| 699 | |
| 700 | *buf = wxT('\0'); |
| 701 | |
| 702 | // we're using uname() which is POSIX instead of less standard sysinfo() |
| 703 | #if defined(HAVE_UNAME) |
| 704 | struct utsname uts; |
| 705 | bool ok = uname(&uts) != -1; |
| 706 | if ( ok ) |
| 707 | { |
| 708 | wxStrncpy(buf, wxConvertMB2WX(uts.nodename), sz - 1); |
| 709 | buf[sz] = wxT('\0'); |
| 710 | } |
| 711 | #elif defined(HAVE_GETHOSTNAME) |
| 712 | bool ok = gethostname(buf, sz) != -1; |
| 713 | #else // no uname, no gethostname |
| 714 | wxFAIL_MSG(wxT("don't know host name for this machine")); |
| 715 | |
| 716 | bool ok = FALSE; |
| 717 | #endif // uname/gethostname |
| 718 | |
| 719 | if ( !ok ) |
| 720 | { |
| 721 | wxLogSysError(_("Cannot get the hostname")); |
| 722 | } |
| 723 | |
| 724 | return ok; |
| 725 | } |
| 726 | |
| 727 | bool wxGetHostName(wxChar *buf, int sz) |
| 728 | { |
| 729 | bool ok = wxGetHostNameInternal(buf, sz); |
| 730 | |
| 731 | if ( ok ) |
| 732 | { |
| 733 | // BSD systems return the FQDN, we only want the hostname, so extract |
| 734 | // it (we consider that dots are domain separators) |
| 735 | wxChar *dot = wxStrchr(buf, wxT('.')); |
| 736 | if ( dot ) |
| 737 | { |
| 738 | // nuke it |
| 739 | *dot = wxT('\0'); |
| 740 | } |
| 741 | } |
| 742 | |
| 743 | return ok; |
| 744 | } |
| 745 | |
| 746 | bool wxGetFullHostName(wxChar *buf, int sz) |
| 747 | { |
| 748 | bool ok = wxGetHostNameInternal(buf, sz); |
| 749 | |
| 750 | if ( ok ) |
| 751 | { |
| 752 | if ( !wxStrchr(buf, wxT('.')) ) |
| 753 | { |
| 754 | struct hostent *host = gethostbyname(wxConvertWX2MB(buf)); |
| 755 | if ( !host ) |
| 756 | { |
| 757 | wxLogSysError(_("Cannot get the official hostname")); |
| 758 | |
| 759 | ok = FALSE; |
| 760 | } |
| 761 | else |
| 762 | { |
| 763 | // the canonical name |
| 764 | wxStrncpy(buf, wxConvertMB2WX(host->h_name), sz); |
| 765 | } |
| 766 | } |
| 767 | //else: it's already a FQDN (BSD behaves this way) |
| 768 | } |
| 769 | |
| 770 | return ok; |
| 771 | } |
| 772 | |
| 773 | bool wxGetUserId(wxChar *buf, int sz) |
| 774 | { |
| 775 | struct passwd *who; |
| 776 | |
| 777 | *buf = wxT('\0'); |
| 778 | if ((who = getpwuid(getuid ())) != NULL) |
| 779 | { |
| 780 | wxStrncpy (buf, wxConvertMB2WX(who->pw_name), sz - 1); |
| 781 | return TRUE; |
| 782 | } |
| 783 | |
| 784 | return FALSE; |
| 785 | } |
| 786 | |
| 787 | bool wxGetUserName(wxChar *buf, int sz) |
| 788 | { |
| 789 | struct passwd *who; |
| 790 | |
| 791 | *buf = wxT('\0'); |
| 792 | if ((who = getpwuid (getuid ())) != NULL) |
| 793 | { |
| 794 | // pw_gecos field in struct passwd is not standard |
| 795 | #ifdef HAVE_PW_GECOS |
| 796 | char *comma = strchr(who->pw_gecos, ','); |
| 797 | if (comma) |
| 798 | *comma = '\0'; // cut off non-name comment fields |
| 799 | wxStrncpy (buf, wxConvertMB2WX(who->pw_gecos), sz - 1); |
| 800 | #else // !HAVE_PW_GECOS |
| 801 | wxStrncpy (buf, wxConvertMB2WX(who->pw_name), sz - 1); |
| 802 | #endif // HAVE_PW_GECOS/!HAVE_PW_GECOS |
| 803 | return TRUE; |
| 804 | } |
| 805 | |
| 806 | return FALSE; |
| 807 | } |
| 808 | |
| 809 | wxString wxGetOsDescription() |
| 810 | { |
| 811 | #ifndef WXWIN_OS_DESCRIPTION |
| 812 | #error WXWIN_OS_DESCRIPTION should be defined in config.h by configure |
| 813 | #else |
| 814 | return WXWIN_OS_DESCRIPTION; |
| 815 | #endif |
| 816 | } |
| 817 | |
| 818 | // this function returns the GUI toolkit version in GUI programs, but OS |
| 819 | // version in non-GUI ones |
| 820 | #if !wxUSE_GUI |
| 821 | |
| 822 | int wxGetOsVersion(int *majorVsn, int *minorVsn) |
| 823 | { |
| 824 | int major, minor; |
| 825 | char name[256]; |
| 826 | |
| 827 | if ( sscanf(WXWIN_OS_DESCRIPTION, "%s %d.%d", name, &major, &minor) != 3 ) |
| 828 | { |
| 829 | // unreckognized uname string format |
| 830 | major = minor = -1; |
| 831 | } |
| 832 | |
| 833 | if ( majorVsn ) |
| 834 | *majorVsn = major; |
| 835 | if ( minorVsn ) |
| 836 | *minorVsn = minor; |
| 837 | |
| 838 | return wxUNIX; |
| 839 | } |
| 840 | |
| 841 | #endif // !wxUSE_GUI |
| 842 | |
| 843 | long wxGetFreeMemory() |
| 844 | { |
| 845 | #if defined(__LINUX__) |
| 846 | // get it from /proc/meminfo |
| 847 | FILE *fp = fopen("/proc/meminfo", "r"); |
| 848 | if ( fp ) |
| 849 | { |
| 850 | long memFree = -1; |
| 851 | |
| 852 | char buf[1024]; |
| 853 | if ( fgets(buf, WXSIZEOF(buf), fp) && fgets(buf, WXSIZEOF(buf), fp) ) |
| 854 | { |
| 855 | long memTotal, memUsed; |
| 856 | sscanf(buf, "Mem: %ld %ld %ld", &memTotal, &memUsed, &memFree); |
| 857 | } |
| 858 | |
| 859 | fclose(fp); |
| 860 | |
| 861 | return memFree; |
| 862 | } |
| 863 | #elif defined(__SUN__) && defined(_SC_AVPHYS_PAGES) |
| 864 | return sysconf(_SC_AVPHYS_PAGES)*sysconf(_SC_PAGESIZE); |
| 865 | //#elif defined(__FREEBSD__) -- might use sysctl() to find it out, probably |
| 866 | #endif |
| 867 | |
| 868 | // can't find it out |
| 869 | return -1; |
| 870 | } |
| 871 | |
| 872 | // ---------------------------------------------------------------------------- |
| 873 | // signal handling |
| 874 | // ---------------------------------------------------------------------------- |
| 875 | |
| 876 | #if wxUSE_ON_FATAL_EXCEPTION |
| 877 | |
| 878 | #include <signal.h> |
| 879 | |
| 880 | static void wxFatalSignalHandler(wxTYPE_SA_HANDLER) |
| 881 | { |
| 882 | if ( wxTheApp ) |
| 883 | { |
| 884 | // give the user a chance to do something special about this |
| 885 | wxTheApp->OnFatalException(); |
| 886 | } |
| 887 | |
| 888 | abort(); |
| 889 | } |
| 890 | |
| 891 | bool wxHandleFatalExceptions(bool doit) |
| 892 | { |
| 893 | // old sig handlers |
| 894 | static bool s_savedHandlers = FALSE; |
| 895 | static struct sigaction s_handlerFPE, |
| 896 | s_handlerILL, |
| 897 | s_handlerBUS, |
| 898 | s_handlerSEGV; |
| 899 | |
| 900 | bool ok = TRUE; |
| 901 | if ( doit && !s_savedHandlers ) |
| 902 | { |
| 903 | // install the signal handler |
| 904 | struct sigaction act; |
| 905 | |
| 906 | // some systems extend it with non std fields, so zero everything |
| 907 | memset(&act, 0, sizeof(act)); |
| 908 | |
| 909 | act.sa_handler = wxFatalSignalHandler; |
| 910 | sigemptyset(&act.sa_mask); |
| 911 | act.sa_flags = 0; |
| 912 | |
| 913 | ok &= sigaction(SIGFPE, &act, &s_handlerFPE) == 0; |
| 914 | ok &= sigaction(SIGILL, &act, &s_handlerILL) == 0; |
| 915 | ok &= sigaction(SIGBUS, &act, &s_handlerBUS) == 0; |
| 916 | ok &= sigaction(SIGSEGV, &act, &s_handlerSEGV) == 0; |
| 917 | if ( !ok ) |
| 918 | { |
| 919 | wxLogDebug(_T("Failed to install our signal handler.")); |
| 920 | } |
| 921 | |
| 922 | s_savedHandlers = TRUE; |
| 923 | } |
| 924 | else if ( s_savedHandlers ) |
| 925 | { |
| 926 | // uninstall the signal handler |
| 927 | ok &= sigaction(SIGFPE, &s_handlerFPE, NULL) == 0; |
| 928 | ok &= sigaction(SIGILL, &s_handlerILL, NULL) == 0; |
| 929 | ok &= sigaction(SIGBUS, &s_handlerBUS, NULL) == 0; |
| 930 | ok &= sigaction(SIGSEGV, &s_handlerSEGV, NULL) == 0; |
| 931 | if ( !ok ) |
| 932 | { |
| 933 | wxLogDebug(_T("Failed to uninstall our signal handler.")); |
| 934 | } |
| 935 | |
| 936 | s_savedHandlers = FALSE; |
| 937 | } |
| 938 | //else: nothing to do |
| 939 | |
| 940 | return ok; |
| 941 | } |
| 942 | |
| 943 | #endif // wxUSE_ON_FATAL_EXCEPTION |
| 944 | |
| 945 | // ---------------------------------------------------------------------------- |
| 946 | // error and debug output routines (deprecated, use wxLog) |
| 947 | // ---------------------------------------------------------------------------- |
| 948 | |
| 949 | void wxDebugMsg( const char *format, ... ) |
| 950 | { |
| 951 | va_list ap; |
| 952 | va_start( ap, format ); |
| 953 | vfprintf( stderr, format, ap ); |
| 954 | fflush( stderr ); |
| 955 | va_end(ap); |
| 956 | } |
| 957 | |
| 958 | void wxError( const wxString &msg, const wxString &title ) |
| 959 | { |
| 960 | wxFprintf( stderr, _("Error ") ); |
| 961 | if (!title.IsNull()) wxFprintf( stderr, wxT("%s "), WXSTRINGCAST(title) ); |
| 962 | if (!msg.IsNull()) wxFprintf( stderr, wxT(": %s"), WXSTRINGCAST(msg) ); |
| 963 | wxFprintf( stderr, wxT(".\n") ); |
| 964 | } |
| 965 | |
| 966 | void wxFatalError( const wxString &msg, const wxString &title ) |
| 967 | { |
| 968 | wxFprintf( stderr, _("Error ") ); |
| 969 | if (!title.IsNull()) wxFprintf( stderr, wxT("%s "), WXSTRINGCAST(title) ); |
| 970 | if (!msg.IsNull()) wxFprintf( stderr, wxT(": %s"), WXSTRINGCAST(msg) ); |
| 971 | wxFprintf( stderr, wxT(".\n") ); |
| 972 | exit(3); // the same exit code as for abort() |
| 973 | } |
| 974 | |