src/acconfig.h

   1 /* Copyright (c) 1993-2000
   2  *      Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
   3  *      Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
   4  * Copyright (c) 1987 Oliver Laumann
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program (see the file COPYING); if not, write to the
  18  * Free Software Foundation, Inc.,
  19  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
  20  *
  21  ****************************************************************
  22  * $Id$ FAU
  23  */
  24
  25
  26
  27
  28
  29 /**********************************************************************
  30  *
  31  *      User Configuration Section
  32  */
  33
  34 /*
  35  * Maximum of simultaneously allowed windows per screen session.
  36  */
  37 #ifndef MAXWIN
  38 # define MAXWIN 40
  39 #endif
  40
  41 /*
  42  * Define SOCKDIR to be the directory to contain the named sockets
  43  * screen creates. This should be in a common subdirectory, such as
  44  * /usr/local or /tmp. It makes things a little more secure if you
  45  * choose a directory which is not writable by everyone or where the
  46  * "sticky" bit is on, but this isn't required.
  47  * If SOCKDIR is not defined screen will put the named sockets in
  48  * the user's home directory. Notice that this can cause you problems
  49  * if some user's HOME directories are AFS- or NFS-mounted. Especially
  50  * AFS is unlikely to support named sockets.
  51  *
  52  * Screen will name the subdirectories "S-$USER" (e.g /tmp/S-davison).
  53  */
  54 #undef SOCKDIR
  55
  56 /*
  57  * Define this if the SOCKDIR is not shared between hosts.
  58  */
  59 #define SOCKDIR_IS_LOCAL_TO_HOST
  60
  61 /*
  62  * Screen sources two startup files. First a global file with a path
  63  * specified here, second your local $HOME/.screenrc
  64  * Don't define this, if you don't want it.
  65  */
  66 #ifndef ETCSCREENRC
  67 # define ETCSCREENRC "/usr/local/etc/screenrc"
  68 #endif
  69
  70 /*
  71  * Screen can look for the environment variable $SYSSCREENRC and -if it
  72  * exists- load the file specified in that variable as global screenrc.
  73  * If you want to enable this feature, define ALLOW_SYSSCREENRC to one (1).
  74  * Otherwise ETCSCREENRC is always loaded.
  75  */
  76 #define ALLOW_SYSSCREENRC 1
  77
  78 /*
  79  * Screen needs encoding files for the translation of utf8
  80  * into some encodings, e.g. JIS, BIG5.
  81  * Only needed if FONT, ENCODINGS and UTF8 are defined.
  82  */
  83 #ifndef SCREENENCODINGS
  84 # define SCREENENCODINGS "/usr/local/lib/screen/encodings"
  85 #endif
  86 /*
  87  * Define CHECKLOGIN to force Screen users to enter their Unix password
  88  * in addition to the screen password.
  89  *
  90  * Define NOSYSLOG if yo do not have logging facilities. Currently
  91  * syslog() will be used to trace ``su'' commands only.
  92  */
  93 #define CHECKLOGIN 1
  94 #undef NOSYSLOG
  95
  96
  97 /*
  98  * define PTYMODE if you do not like the default of 0622, which allows
  99  * public write to your pty.
 100  * define PTYGROUP to some numerical group-id if you do not want the
 101  * tty to be in "your" group.
 102  * Note, screen is unable to change mode or group of the pty if it
 103  * is not installed with sufficient privilege. (e.g. set-uid-root)
 104  * define PTYROFS if the /dev/pty devices are mounted on a read-only
 105  * filesystem so screen should not even attempt to set mode or group
 106  * even if running as root (e.g. on TiVo).
 107  */
 108 #undef PTYMODE
 109 #undef PTYGROUP
 110 #undef PTYROFS
 111
 112 /*
 113  * If screen is NOT installed set-uid root, screen can provide tty
 114  * security by exclusively locking the ptys.  While this keeps other
 115  * users from opening your ptys, it also keeps your own subprocesses
 116  * from being able to open /dev/tty.  Define LOCKPTY to add this
 117  * exclusive locking.
 118  */
 119 #undef LOCKPTY
 120
 121 /*
 122  * If you'd rather see the status line on the first line of your
 123  * terminal rather than the last, define TOPSTAT.
 124  */
 125 #undef TOPSTAT
 126
 127 /*
 128  * define DETACH can detach a session. An absolute 'must'.
 129  */
 130 #define DETACH
 131
 132 /*
 133  * here come the erlangen extensions to screen:
 134  * define LOCK if you want to use a lock program for a screenlock.
 135  * define PASSWORD for secure reattach of your screen.
 136  * define COPY_PASTE to use the famous hacker's treasure zoo.
 137  * define POW_DETACH to have a detach_and_logout key (requires DETACH).
 138  * define REMOTE_DETACH (-d option) to move screen between terminals.
 139  * define AUTO_NUKE to enable Tim MacKenzies clear screen nuking
 140  * define PSEUDOS to allow window input/output filtering
 141  * define MULTI to allow multiple attaches.
 142  * define MULTIUSER to allow other users attach to your session
 143  *                  (if they are in the acl, of course)
 144  * define MAPKEYS to include input keyboard translation.
 145  * define FONT to support ISO2022/alternet charset support
 146  * define COLOR to include ansi color support. This may expose
 147  *        a bug in x11r6-color-xterm.
 148  * define DW_CHARS to include support for double-width character
 149  *        sets.
 150  * define ENCODINGS to include support for encodings like euc or big5.
 151  *        Needs FONT to work.
 152  * define UTF8 if you want support for UTF-8 encoding.
 153  *        Needs FONT and ENCODINGS to work.
 154  * define COLORS16 if you want 16 colors.
 155  *        Needs COLOR to work.
 156  * define BUILTIN_TELNET to add telnet support to screen.
 157  *        Syntax: screen //telnet host [port]
 158  * define RXVT_OSC if you want support for rxvts special
 159  *        change fgcolor/bgcolor/bgpicture sequences
 160  */
 161 #undef SIMPLESCREEN
 162 #ifndef SIMPLESCREEN
 163 # define LOCK
 164 # define PASSWORD
 165 # define COPY_PASTE
 166 # define REMOTE_DETACH
 167 # define POW_DETACH
 168 # define AUTO_NUKE
 169 # define PSEUDOS
 170 # define MULTI
 171 # define MULTIUSER
 172 # define MAPKEYS
 173 # define COLOR
 174 # define FONT
 175 # define DW_CHARS
 176 # define ENCODINGS
 177 # define UTF8
 178 # define COLORS16
 179 # define ZMODEM
 180 # define BLANKER_PRG
 181 #endif /* SIMPLESCREEN */
 182
 183 #undef BUILTIN_TELNET
 184 #undef RXVT_OSC
 185 #undef COLORS256
 186
 187
 188 /*
 189  * If you have a braille display you should define HAVE_BRAILLE.
 190  * The code inside #ifdef HAVE_BRAILLE was contributed by Hadi Bargi
 191  * Rangin (bargi@dots.physics.orst.edu).
 192  * WARNING: this is more or less unsupported code, it may be full of
 193  * bugs leading to security holes, enable at your own risk!
 194  */
 195 #undef HAVE_BRAILLE
 196
 197
 198 /*
 199  * As error messages are mostly meaningless to the user, we
 200  * try to throw out phrases that are somewhat more familiar
 201  * to ...well, at least familiar to us NetHack players.
 202  */
 203 #ifndef NONETHACK
 204 # define NETHACK
 205 #endif /* NONETHACK */
 206
 207 /*
 208  * If screen is installed with permissions to update /etc/utmp (such
 209  * as if it is installed set-uid root), define UTMPOK.
 210  */
 211 #define UTMPOK
 212
 213 /* Set LOGINDEFAULT to one (1)
 214  * if you want entries added to /etc/utmp by default, else set it to
 215  * zero (0).
 216  * LOGINDEFAULT will be one (1) whenever LOGOUTOK is undefined!
 217  */
 218 #define LOGINDEFAULT    1
 219
 220 /* Set LOGOUTOK to one (1)
 221  * if you want the user to be able to log her/his windows out.
 222  * (Meaning: They are there, but not visible in /etc/utmp).
 223  * Disabling this feature only makes sense if you have a secure /etc/utmp
 224  * database.
 225  * Negative examples: suns usually have a world writable utmp file,
 226  * xterm will run perfectly without s-bit.
 227  *
 228  * If LOGOUTOK is undefined and UTMPOK is defined, all windows are
 229  * initially and permanently logged in.
 230  *
 231  * Set CAREFULUTMP to one (1) if you want that users have at least one
 232  * window per screen session logged in.
 233  */
 234 #define LOGOUTOK 1
 235 #undef CAREFULUTMP
 236
 237
 238 /*
 239  * If UTMPOK is defined and your system (incorrectly) counts logins by
 240  * counting non-null entries in /etc/utmp (instead of counting non-null
 241  * entries with no hostname that are not on a pseudo tty), define USRLIMIT
 242  * to have screen put an upper-limit on the number of entries to write
 243  * into /etc/utmp.  This helps to keep you from exceeding a limited-user
 244  * license.
 245  */
 246 #undef USRLIMIT
 247
 248 /*
 249  * both must be defined if you want to favor tcsendbreak over
 250  * other calls to generate a break condition on serial lines.
 251  * (Do not bother, if you are not using plain tty windows.)
 252  */
 253 #define POSIX_HAS_A_GOOD_TCSENDBREAK
 254 #define SUNOS4_AND_WE_TRUST_TCSENDBREAK
 255
 256 /*
 257  * to lower the interrupt load on the host machine, you may want to
 258  * adjust the VMIN and VTIME settings used for plain tty windows.
 259  * See the termio(4) manual page (Non-Canonical Mode Input Processing)
 260  * for details.
 261  * if undefined, VMIN=1, VTIME=0 is used as a default - this gives you
 262  * best user responsiveness, but highest interrupt frequency.
 263  * (Do not bother, if you are not using plain tty windows.)
 264  */
 265 #define TTYVMIN 100
 266 #define TTYVTIME 2
 267
 268 /*
 269  * looks like the above values are ignored by setting FNDELAY.
 270  * This is default for all pty/ttys, you may disable it for
 271  * ttys here. After playing with it for a while, one may find out
 272  * that this feature may cause screen to lock up.
 273  */
 274 #ifdef bsdi
 275 # define TTY_DISABLE_FNBLOCK /* select barfs without it ... */
 276 #endif
 277
 278
 279 /*
 280  * Some terminals, e.g. Wyse 120, use a bitfield to select attributes.
 281  * This doesn't work with the standard so/ul/m? terminal entries,
 282  * because they will cancel each other out.
 283  * On TERMINFO machines, "sa" (sgr) may work. If you want screen
 284  * to switch attributes only with sgr, define USE_SGR.
 285  * This is *not* recomended, do this only if you must.
 286  */
 287 #undef USE_SGR
 288
 289
 290 /*
 291  * Define USE_LOCALE if you want screen to use the locale names
 292  * for the name of the month and day of the week.
 293  */
 294 #define USE_LOCALE
 295
 296 /*
 297  * Define USE_PAM if your system supports PAM (Pluggable Authentication
 298  * Modules) and you want screen to use it instead of calling crypt().
 299  * (You may also need to add -lpam to LIBS in the Makefile.)
 300  */
 301 #undef USE_PAM
 302
 303 /*
 304  * Define CHECK_SCREEN_W if you want screen to set TERM to screen-w
 305  * if the terminal width is greater than 131 columns. No longer needed
 306  * on modern systems which use $COLUMNS or the tty settings instead.
 307  */
 308 #undef CHECK_SCREEN_W
 309
 310 /**********************************************************************
 311  *
 312  *      End of User Configuration Section
 313  *
 314  *      Rest of this file is modified by 'configure'
 315  *      Change at your own risk!
 316  *
 317  */
 318
 319 /*
 320  * Some defines to identify special unix variants
 321  */
 322 #ifndef SVR4
 323 #undef SVR4
 324 #endif
 325
 326 /* #ifndef __osf__ */
 327 #ifndef MIPS
 328 #undef MIPS
 329 #endif
 330 /* #endif */
 331
 332 #ifndef OSX
 333 #undef OSX
 334 #endif
 335
 336 #ifndef ISC
 337 #undef ISC
 338 #endif
 339
 340 #ifndef sysV68
 341 #undef sysV68
 342 #endif
 343
 344 #ifndef _POSIX_SOURCE
 345 #undef _POSIX_SOURCE
 346 #endif
 347
 348 /*
 349  * Define POSIX if your system supports IEEE Std 1003.1-1988 (POSIX).
 350  */
 351 #undef POSIX
 352
 353 /*
 354  * Define BSDJOBS if you have BSD-style job control (both process
 355  * groups and a tty that deals correctly with them).
 356  */
 357 #undef BSDJOBS
 358
 359 /*
 360  * Define TERMIO if you have struct termio instead of struct sgttyb.
 361  * This is usually the case for SVID systems, where BSD uses sgttyb.
 362  * POSIX systems should define this anyway, even though they use
 363  * struct termios.
 364  */
 365 #undef TERMIO
 366
 367 /*
 368  * Define CYTERMIO if you have cyrillic termio modes.
 369  */
 370 #undef CYTERMIO
 371
 372 /*
 373  * Define TERMINFO if your machine emulates the termcap routines
 374  * with the terminfo database.
 375  * Thus the .screenrc file is parsed for
 376  * the command 'terminfo' and not 'termcap'.
 377  */
 378 #undef TERMINFO
 379
 380 /*
 381  * If your library does not define ospeed, define this.
 382  */
 383 #undef NEED_OSPEED
 384
 385 /*
 386  * Define SYSV if your machine is SYSV complient (Sys V, HPUX, A/UX)
 387  */
 388 #ifndef SYSV
 389 #undef SYSV
 390 #endif
 391
 392 /*
 393  * Define SIGVOID if your signal handlers return void.  On older
 394  * systems, signal returns int, but on newer ones, it returns void.
 395  */
 396 #undef SIGVOID
 397
 398 /*
 399  * Define USESIGSET if you have sigset for BSD 4.1 reliable signals.
 400  */
 401 #undef USESIGSET
 402
 403 /*
 404  * Define SYSVSIGS if signal handlers must be reinstalled after
 405  * they have been called.
 406  */
 407 #undef SYSVSIGS
 408
 409 /*
 410  * Define BSDWAIT if your system defines a 'union wait' in <sys/wait.h>
 411  *
 412  * Only allow BSDWAIT i.e. wait3 on nonposix systems, since
 413  * posix implies wait(3) and waitpid(3). vdlinden@fwi.uva.nl
 414  *
 415  */
 416 #ifndef POSIX
 417 #undef BSDWAIT
 418 #endif
 419
 420 /*
 421  * On RISCOS we prefer wait2() over wait3(). rouilj@sni-usa.com
 422  */
 423 #ifdef BSDWAIT
 424 #undef USE_WAIT2
 425 #endif
 426
 427 /*
 428  * Define HAVE_DIRENT_H if your system has <dirent.h> instead of
 429  * <sys/dir.h>
 430  */
 431 #undef HAVE_DIRENT_H
 432
 433 /*
 434  * If your system has getutent(), pututline(), etc. to write to the
 435  * utmp file, define GETUTENT.
 436  */
 437 #undef GETUTENT
 438
 439 /*
 440  * Define UTHOST if the utmp file has a host field.
 441  */
 442 #undef UTHOST
 443
 444 /*
 445  * Define if you have the utempter utmp helper program
 446  */
 447 #undef HAVE_UTEMPTER
 448
 449 /*
 450  * If ttyslot() breaks getlogin() by returning indexes to utmp entries
 451  * of type DEAD_PROCESS, then our getlogin() replacement should be
 452  * selected by defining BUGGYGETLOGIN.
 453  */
 454 #undef BUGGYGETLOGIN
 455
 456 /*
 457  * If your system has the calls setreuid() and setregid(),
 458  * define HAVE_SETREUID. Otherwise screen will use a forked process to
 459  * safely create output files without retaining any special privileges.
 460  */
 461 #undef HAVE_SETRESUID
 462 #undef HAVE_SETREUID
 463
 464 /*
 465  * If your system supports BSD4.4's seteuid() and setegid(), define
 466  * HAVE_SETEUID.
 467  */
 468 #undef HAVE_SETEUID
 469
 470 /*
 471  * If you want the "time" command to display the current load average
 472  * define LOADAV. Maybe you must install screen with the needed
 473  * privileges to read /dev/kmem.
 474  * Note that NLIST_ stuff is only checked, when getloadavg() is not available.
 475  */
 476 #undef LOADAV
 477
 478 #undef LOADAV_NUM
 479 #undef LOADAV_TYPE
 480 #undef LOADAV_SCALE
 481 #undef LOADAV_GETLOADAVG
 482 #undef LOADAV_UNIX
 483 #undef LOADAV_AVENRUN
 484 #undef LOADAV_USE_NLIST64
 485
 486 #undef NLIST_DECLARED
 487 #undef NLIST_STRUCT
 488 #undef NLIST_NAME_UNION
 489
 490 /*
 491  * If your system has the new format /etc/ttys (like 4.3 BSD) and the
 492  * getttyent(3) library functions, define GETTTYENT.
 493  */
 494 #undef GETTTYENT
 495
 496 /*
 497  * Define USEBCOPY if the bcopy/memcpy from your system's C library
 498  * supports the overlapping of source and destination blocks.  When
 499  * undefined, screen uses its own (probably slower) version of bcopy().
 500  *
 501  * SYSV machines may have a working memcpy() -- Oh, this is
 502  * quite unlikely. Tell me if you see one.
 503  * "But then, memmove() should work, if at all available" he thought...
 504  * Boing, never say "works everywhere" unless you checked SCO UNIX.
 505  * Their memove fails the test in the configure script. Sigh. (Juergen)
 506  */
 507 #undef USEBCOPY
 508 #undef USEMEMCPY
 509 #undef USEMEMMOVE
 510
 511 /*
 512  * If your system has vsprintf() and requires the use of the macros in
 513  * "varargs.h" to use functions with variable arguments,
 514  * define USEVARARGS.
 515  */
 516 #undef USEVARARGS
 517
 518 /*
 519  * If your system has strerror() define this.
 520  */
 521 #undef HAVE_STRERROR
 522
 523 /*
 524  * If the select return value doesn't treat a descriptor that is
 525  * usable for reading and writing as two hits, define SELECT_BROKEN.
 526  */
 527 #undef SELECT_BROKEN
 528
 529 /*
 530  * Define this if your system supports named pipes.
 531  */
 532 #undef NAMEDPIPE
 533
 534 /*
 535  * Define this if your system exits select() immediatly if a pipe is
 536  * opened read-only and no writer has opened it.
 537  */
 538 #undef BROKEN_PIPE
 539
 540 /*
 541  * Define this if the unix-domain socket implementation doesn't
 542  * create a socket in the filesystem.
 543  */
 544 #undef SOCK_NOT_IN_FS
 545
 546 /*
 547  * If your system has setenv() and unsetenv() define USESETENV
 548  */
 549 #undef USESETENV
 550
 551 /*
 552  * If setenv() takes 3 arguments sefine HAVE_SETENV_3
 553  */
 554 #undef HAVE_SETENV_3
 555
 556 /*
 557  * If setenv() takes 2 arguments sefine HAVE_SETENV_2
 558  */
 559 #undef HAVE_SETENV_2
 560
 561 /*
 562  * If your system does not come with a setenv()/putenv()/getenv()
 563  * functions, you may bring in our own code by defining NEEDPUTENV.
 564  */
 565 #undef NEEDPUTENV
 566
 567 /*
 568  * If the passwords are stored in a shadow file and you want the
 569  * builtin lock to work properly, define SHADOWPW.
 570  */
 571 #undef SHADOWPW
 572
 573 /*
 574  * If you are on a SYS V machine that restricts filename length to 14
 575  * characters, you may need to enforce that by setting NAME_MAX to 14
 576  */
 577 #undef NAME_MAX         /* KEEP_UNDEF_HERE override system value */
 578 #undef NAME_MAX
 579
 580 /*
 581  * define HAVE_RENAME if your system has a rename() function
 582  */
 583 #undef HAVE_RENAME
 584
 585 /*
 586  * define HAVE__EXIT if your system has the _exit() call.
 587  */
 588 #undef HAVE__EXIT
 589
 590 /*
 591  * define HAVE_LSTAT if your system has symlinks and the lstat() call.
 592  */
 593 #undef HAVE_LSTAT
 594
 595 /*
 596  * define HAVE_UTIMES if your system has the utimes() call.
 597  */
 598 #undef HAVE_UTIMES
 599
 600 /*
 601  * define HAVE_FCHOWN if your system has the fchown() call.
 602  */
 603 #undef HAVE_FCHOWN
 604
 605 /*
 606  * define HAVE_FCHMOD if your system has the fchmod() call.
 607  */
 608 #undef HAVE_FCHMOD
 609
 610 /*
 611  * define HAVE_VSNPRINTF if your system has vsnprintf() (GNU lib).
 612  */
 613 #undef HAVE_VSNPRINTF
 614
 615 /*
 616  * define HAVE_GETCWD if your system has the getcwd() call.
 617  */
 618 #undef HAVE_GETCWD
 619
 620 /*
 621  * define HAVE_SETLOCALE if your system has the setlocale() call.
 622  */
 623 #undef HAVE_SETLOCALE
 624
 625 /*
 626  * define HAVE_STRFTIME if your system has the strftime() call.
 627  */
 628 #undef HAVE_STRFTIME
 629
 630 /*
 631  * define HAVE_NL_LANGINFO if your system has the nl_langinfo() call
 632  * and <langinfo.h> defines CODESET.
 633  */
 634 #undef HAVE_NL_LANGINFO
 635
 636 /*
 637  * Newer versions of Solaris include fdwalk, which can greatly improve
 638  * the startup time of screen; otherwise screen spends a lot of time
 639  * closing file descriptors.
 640  */
 641 #undef HAVE_FDWALK
 642
 643 /*
 644  * define HAVE_DEV_PTC if you have a /dev/ptc character special
 645  * device.
 646  */
 647 #undef HAVE_DEV_PTC
 648
 649 /*
 650  * define HAVE_SVR4_PTYS if you have a /dev/ptmx character special
 651  * device and support the ptsname(), grantpt(), unlockpt() functions.
 652  */
 653 #undef HAVE_SVR4_PTYS
 654
 655 /*
 656  * define HAVE_GETPT if you have the getpt() function.
 657  */
 658 #undef HAVE_GETPT
 659
 660 /*
 661  * define HAVE_OPENPTY if your system has the openpty() call.
 662  */
 663 #undef HAVE_OPENPTY
 664
 665 /*
 666  * define PTYRANGE0 and or PTYRANGE1 if you want to adapt screen
 667  * to unusual environments. E.g. For SunOs the defaults are "qpr" and
 668  * "0123456789abcdef". For SunOs 4.1.2
 669  * #define PTYRANGE0 "pqrstuvwxyzPQRST"
 670  * is recommended by Dan Jacobson.
 671  */
 672 #undef PTYRANGE0
 673 #undef PTYRANGE1
 674