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 3, 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, see
  18  * http://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  20  *
  21  ****************************************************************
  22  * $Id$ GNU
  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 100
  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 can look for the environment variable $SYSSCREENRC and -if it
  63  * exists- load the file specified in that variable as global screenrc.
  64  * If you want to enable this feature, define ALLOW_SYSSCREENRC to one (1).
  65  * Otherwise ETCSCREENRC is always loaded.
  66  */
  67 #define ALLOW_SYSSCREENRC 1
  68
  69 /*
  70  * Define CHECKLOGIN to force Screen users to enter their Unix password
  71  * in addition to the screen password.
  72  *
  73  * Define NOSYSLOG if yo do not have logging facilities. Currently
  74  * syslog() will be used to trace ``su'' commands only.
  75  */
  76 #define CHECKLOGIN 1
  77 #undef NOSYSLOG
  78
  79
  80 /*
  81  * define PTYMODE if you do not like the default of 0622, which allows
  82  * public write to your pty.
  83  * define PTYGROUP to some numerical group-id if you do not want the
  84  * tty to be in "your" group.
  85  * Note, screen is unable to change mode or group of the pty if it
  86  * is not installed with sufficient privilege. (e.g. set-uid-root)
  87  * define PTYROFS if the /dev/pty devices are mounted on a read-only
  88  * filesystem so screen should not even attempt to set mode or group
  89  * even if running as root (e.g. on TiVo).
  90  */
  91 #undef PTYMODE
  92 #undef PTYGROUP
  93 #undef PTYROFS
  94
  95 /*
  96  * If screen is NOT installed set-uid root, screen can provide tty
  97  * security by exclusively locking the ptys.  While this keeps other
  98  * users from opening your ptys, it also keeps your own subprocesses
  99  * from being able to open /dev/tty.  Define LOCKPTY to add this
 100  * exclusive locking.
 101  */
 102 #undef LOCKPTY
 103
 104 /*
 105  * If you'd rather see the status line on the first line of your
 106  * terminal rather than the last, define TOPSTAT.
 107  */
 108 #undef TOPSTAT
 109
 110 /*
 111  * define DETACH can detach a session. An absolute 'must'.
 112  */
 113 #define DETACH
 114
 115 /*
 116  * here come the erlangen extensions to screen:
 117  * define LOCK if you want to use a lock program for a screenlock.
 118  * define PASSWORD for secure reattach of your screen.
 119  * define COPY_PASTE to use the famous hacker's treasure zoo.
 120  * define POW_DETACH to have a detach_and_logout key (requires DETACH).
 121  * define REMOTE_DETACH (-d option) to move screen between terminals.
 122  * define AUTO_NUKE to enable Tim MacKenzies clear screen nuking
 123  * define PSEUDOS to allow window input/output filtering
 124  * define MULTI to allow multiple attaches.
 125  * define MULTIUSER to allow other users attach to your session
 126  *                  (if they are in the acl, of course)
 127  * define MAPKEYS to include input keyboard translation.
 128  * define FONT to support ISO2022/alternet charset support
 129  * define COLOR to include ansi color support. This may expose
 130  *        a bug in x11r6-color-xterm.
 131  * define DW_CHARS to include support for double-width character
 132  *        sets.
 133  * define ENCODINGS to include support for encodings like euc or big5.
 134  *        Needs FONT to work.
 135  * define UTF8 if you want support for UTF-8 encoding.
 136  *        Needs FONT and ENCODINGS to work.
 137  * define COLORS16 if you want 16 colors.
 138  *        Needs COLOR to work.
 139  * define BUILTIN_TELNET to add telnet support to screen.
 140  *        Syntax: screen //telnet host [port]
 141  * define RXVT_OSC if you want support for rxvts special
 142  *        change fgcolor/bgcolor/bgpicture sequences
 143  */
 144 #undef SIMPLESCREEN
 145 #ifndef SIMPLESCREEN
 146 # define LOCK
 147 # define PASSWORD
 148 # define COPY_PASTE
 149 # define REMOTE_DETACH
 150 # define POW_DETACH
 151 # define AUTO_NUKE
 152 # define PSEUDOS
 153 # define MULTI
 154 # define MULTIUSER
 155 # define MAPKEYS
 156 # define COLOR
 157 # define FONT
 158 # define DW_CHARS
 159 # define ENCODINGS
 160 # define UTF8
 161 # define COLORS16
 162 # define ZMODEM
 163 # define BLANKER_PRG
 164 #endif /* SIMPLESCREEN */
 165
 166 #undef BUILTIN_TELNET
 167 #undef RXVT_OSC
 168 #undef COLORS256
 169
 170
 171 /*
 172  * If you have a braille display you should define HAVE_BRAILLE.
 173  * The code inside #ifdef HAVE_BRAILLE was contributed by Hadi Bargi
 174  * Rangin (bargi@dots.physics.orst.edu).
 175  * WARNING: this is more or less unsupported code, it may be full of
 176  * bugs leading to security holes, enable at your own risk!
 177  */
 178 #undef HAVE_BRAILLE
 179
 180
 181 /*
 182  * As error messages are mostly meaningless to the user, we
 183  * try to throw out phrases that are somewhat more familiar
 184  * to ...well, at least familiar to us NetHack players.
 185  */
 186 #ifndef NONETHACK
 187 # define NETHACK
 188 #endif /* NONETHACK */
 189
 190 /*
 191  * If screen is installed with permissions to update /etc/utmp (such
 192  * as if it is installed set-uid root), define UTMPOK.
 193  */
 194 #define UTMPOK
 195
 196 /* Set LOGINDEFAULT to one (1)
 197  * if you want entries added to /etc/utmp by default, else set it to
 198  * zero (0).
 199  * LOGINDEFAULT will be one (1) whenever LOGOUTOK is undefined!
 200  */
 201 #define LOGINDEFAULT    1
 202
 203 /* Set LOGOUTOK to one (1)
 204  * if you want the user to be able to log her/his windows out.
 205  * (Meaning: They are there, but not visible in /etc/utmp).
 206  * Disabling this feature only makes sense if you have a secure /etc/utmp
 207  * database.
 208  * Negative examples: suns usually have a world writable utmp file,
 209  * xterm will run perfectly without s-bit.
 210  *
 211  * If LOGOUTOK is undefined and UTMPOK is defined, all windows are
 212  * initially and permanently logged in.
 213  *
 214  * Set CAREFULUTMP to one (1) if you want that users have at least one
 215  * window per screen session logged in.
 216  */
 217 #define LOGOUTOK 1
 218 #undef CAREFULUTMP
 219
 220
 221 /*
 222  * If UTMPOK is defined and your system (incorrectly) counts logins by
 223  * counting non-null entries in /etc/utmp (instead of counting non-null
 224  * entries with no hostname that are not on a pseudo tty), define USRLIMIT
 225  * to have screen put an upper-limit on the number of entries to write
 226  * into /etc/utmp.  This helps to keep you from exceeding a limited-user
 227  * license.
 228  */
 229 #undef USRLIMIT
 230
 231 /*
 232  * both must be defined if you want to favor tcsendbreak over
 233  * other calls to generate a break condition on serial lines.
 234  * (Do not bother, if you are not using plain tty windows.)
 235  */
 236 #define POSIX_HAS_A_GOOD_TCSENDBREAK
 237 #define SUNOS4_AND_WE_TRUST_TCSENDBREAK
 238
 239 /*
 240  * to lower the interrupt load on the host machine, you may want to
 241  * adjust the VMIN and VTIME settings used for plain tty windows.
 242  * See the termio(4) manual page (Non-Canonical Mode Input Processing)
 243  * for details.
 244  * if undefined, VMIN=1, VTIME=0 is used as a default - this gives you
 245  * best user responsiveness, but highest interrupt frequency.
 246  * (Do not bother, if you are not using plain tty windows.)
 247  */
 248 #define TTYVMIN 100
 249 #define TTYVTIME 2
 250
 251 /*
 252  * looks like the above values are ignored by setting FNDELAY.
 253  * This is default for all pty/ttys, you may disable it for
 254  * ttys here. After playing with it for a while, one may find out
 255  * that this feature may cause screen to lock up.
 256  */
 257 #ifdef bsdi
 258 # define TTY_DISABLE_FNBLOCK /* select barfs without it ... */
 259 #endif
 260
 261
 262 /*
 263  * Some terminals, e.g. Wyse 120, use a bitfield to select attributes.
 264  * This doesn't work with the standard so/ul/m? terminal entries,
 265  * because they will cancel each other out.
 266  * On TERMINFO machines, "sa" (sgr) may work. If you want screen
 267  * to switch attributes only with sgr, define USE_SGR.
 268  * This is *not* recomended, do this only if you must.
 269  */
 270 #undef USE_SGR
 271
 272
 273 /*
 274  * Define USE_LOCALE if you want screen to use the locale names
 275  * for the name of the month and day of the week.
 276  */
 277 #define USE_LOCALE
 278
 279 /*
 280  * Define USE_PAM if your system supports PAM (Pluggable Authentication
 281  * Modules) and you want screen to use it instead of calling crypt().
 282  * (You may also need to add -lpam to LIBS in the Makefile.)
 283  */
 284 #undef USE_PAM
 285
 286 /*
 287  * Define CHECK_SCREEN_W if you want screen to set TERM to screen-w
 288  * if the terminal width is greater than 131 columns. No longer needed
 289  * on modern systems which use $COLUMNS or the tty settings instead.
 290  */
 291 #undef CHECK_SCREEN_W
 292
 293 /**********************************************************************
 294  *
 295  *      End of User Configuration Section
 296  *
 297  *      Rest of this file is modified by 'configure'
 298  *      Change at your own risk!
 299  *
 300  */
 301
 302 /*
 303  * Some defines to identify special unix variants
 304  */
 305 #ifndef SVR4
 306 #undef SVR4
 307 #endif
 308
 309 /* #ifndef __osf__ */
 310 #ifndef MIPS
 311 #undef MIPS
 312 #endif
 313 /* #endif */
 314
 315 #ifndef OSX
 316 #undef OSX
 317 #endif
 318
 319 #ifndef ISC
 320 #undef ISC
 321 #endif
 322
 323 #ifndef sysV68
 324 #undef sysV68
 325 #endif
 326
 327 #ifndef _POSIX_SOURCE
 328 #undef _POSIX_SOURCE
 329 #endif
 330
 331 /*
 332  * Define POSIX if your system supports IEEE Std 1003.1-1988 (POSIX).
 333  */
 334 #undef POSIX
 335
 336 /*
 337  * Define BSDJOBS if you have BSD-style job control (both process
 338  * groups and a tty that deals correctly with them).
 339  */
 340 #undef BSDJOBS
 341
 342 /*
 343  * Define TERMIO if you have struct termio instead of struct sgttyb.
 344  * This is usually the case for SVID systems, where BSD uses sgttyb.
 345  * POSIX systems should define this anyway, even though they use
 346  * struct termios.
 347  */
 348 #undef TERMIO
 349
 350 /*
 351  * Define CYTERMIO if you have cyrillic termio modes.
 352  */
 353 #undef CYTERMIO
 354
 355 /*
 356  * Define TERMINFO if your machine emulates the termcap routines
 357  * with the terminfo database.
 358  * Thus the .screenrc file is parsed for
 359  * the command 'terminfo' and not 'termcap'.
 360  */
 361 #undef TERMINFO
 362
 363 /*
 364  * If your library does not define ospeed, define this.
 365  */
 366 #undef NEED_OSPEED
 367
 368 /*
 369  * Define SYSV if your machine is SYSV complient (Sys V, HPUX, A/UX)
 370  */
 371 #ifndef SYSV
 372 #undef SYSV
 373 #endif
 374
 375 /*
 376  * Define SIGVOID if your signal handlers return void.  On older
 377  * systems, signal returns int, but on newer ones, it returns void.
 378  */
 379 #undef SIGVOID
 380
 381 /*
 382  * Define USESIGSET if you have sigset for BSD 4.1 reliable signals.
 383  */
 384 #undef USESIGSET
 385
 386 /*
 387  * Define SYSVSIGS if signal handlers must be reinstalled after
 388  * they have been called.
 389  */
 390 #undef SYSVSIGS
 391
 392 /*
 393  * Define BSDWAIT if your system defines a 'union wait' in <sys/wait.h>
 394  *
 395  * Only allow BSDWAIT i.e. wait3 on nonposix systems, since
 396  * posix implies wait(3) and waitpid(3). vdlinden@fwi.uva.nl
 397  *
 398  */
 399 #ifndef POSIX
 400 #undef BSDWAIT
 401 #endif
 402
 403 /*
 404  * On RISCOS we prefer wait2() over wait3(). rouilj@sni-usa.com
 405  */
 406 #ifdef BSDWAIT
 407 #undef USE_WAIT2
 408 #endif
 409
 410 /*
 411  * If your system has getutent(), pututline(), etc. to write to the
 412  * utmp file, define GETUTENT.
 413  */
 414 #undef GETUTENT
 415
 416 /*
 417  * Define UTHOST if the utmp file has a host field.
 418  */
 419 #undef UTHOST
 420
 421 /*
 422  * Define if you have the utempter utmp helper program
 423  */
 424 #undef HAVE_UTEMPTER
 425
 426 /*
 427  * If ttyslot() breaks getlogin() by returning indexes to utmp entries
 428  * of type DEAD_PROCESS, then our getlogin() replacement should be
 429  * selected by defining BUGGYGETLOGIN.
 430  */
 431 #undef BUGGYGETLOGIN
 432
 433 /*
 434  * If your system has the calls setreuid() and setregid(),
 435  * define HAVE_SETREUID. Otherwise screen will use a forked process to
 436  * safely create output files without retaining any special privileges.
 437  */
 438 #undef HAVE_SETRESUID
 439 #undef HAVE_SETREUID
 440
 441 /*
 442  * If your system supports BSD4.4's seteuid() and setegid(), define
 443  * HAVE_SETEUID.
 444  */
 445 #undef HAVE_SETEUID
 446
 447 /*
 448  * execvpe is now defined in some systems.
 449  */
 450 #undef HAVE_EXECVPE
 451
 452 /*
 453  * If you want the "time" command to display the current load average
 454  * define LOADAV. Maybe you must install screen with the needed
 455  * privileges to read /dev/kmem.
 456  * Note that NLIST_ stuff is only checked, when getloadavg() is not available.
 457  */
 458 #undef LOADAV
 459
 460 #undef LOADAV_NUM
 461 #undef LOADAV_TYPE
 462 #undef LOADAV_SCALE
 463 #undef LOADAV_GETLOADAVG
 464 #undef LOADAV_UNIX
 465 #undef LOADAV_AVENRUN
 466 #undef LOADAV_USE_NLIST64
 467
 468 #undef NLIST_DECLARED
 469 #undef NLIST_STRUCT
 470 #undef NLIST_NAME_UNION
 471
 472 /*
 473  * If your system has the new format /etc/ttys (like 4.3 BSD) and the
 474  * getttyent(3) library functions, define GETTTYENT.
 475  */
 476 #undef GETTTYENT
 477
 478 /*
 479  * Define USEBCOPY if the bcopy/memcpy from your system's C library
 480  * supports the overlapping of source and destination blocks.  When
 481  * undefined, screen uses its own (probably slower) version of bcopy().
 482  *
 483  * SYSV machines may have a working memcpy() -- Oh, this is
 484  * quite unlikely. Tell me if you see one.
 485  * "But then, memmove() should work, if at all available" he thought...
 486  * Boing, never say "works everywhere" unless you checked SCO UNIX.
 487  * Their memove fails the test in the configure script. Sigh. (Juergen)
 488  */
 489 #undef USEBCOPY
 490 #undef USEMEMCPY
 491 #undef USEMEMMOVE
 492
 493 /*
 494  * If your system has vsprintf() and requires the use of the macros in
 495  * "varargs.h" to use functions with variable arguments,
 496  * define USEVARARGS.
 497  */
 498 #undef USEVARARGS
 499
 500 /*
 501  * If the select return value doesn't treat a descriptor that is
 502  * usable for reading and writing as two hits, define SELECT_BROKEN.
 503  */
 504 #undef SELECT_BROKEN
 505
 506 /*
 507  * Define this if your system supports named pipes.
 508  */
 509 #undef NAMEDPIPE
 510
 511 /*
 512  * Define this if your system exits select() immediatly if a pipe is
 513  * opened read-only and no writer has opened it.
 514  */
 515 #undef BROKEN_PIPE
 516
 517 /*
 518  * Define this if the unix-domain socket implementation doesn't
 519  * create a socket in the filesystem.
 520  */
 521 #undef SOCK_NOT_IN_FS
 522
 523 /*
 524  * If your system has setenv() and unsetenv() define USESETENV
 525  */
 526 #undef USESETENV
 527
 528 /*
 529  * If setenv() takes 3 arguments define HAVE_SETENV_3
 530  */
 531 #undef HAVE_SETENV_3
 532
 533 /*
 534  * If setenv() takes 2 arguments define HAVE_SETENV_2
 535  */
 536 #undef HAVE_SETENV_2
 537
 538 /*
 539  * If your system does not come with a setenv()/putenv()/getenv()
 540  * functions, you may bring in our own code by defining NEEDPUTENV.
 541  */
 542 #undef NEEDPUTENV
 543
 544 /*
 545  * If the passwords are stored in a shadow file and you want the
 546  * builtin lock to work properly, define SHADOWPW.
 547  */
 548 #undef SHADOWPW
 549
 550 /*
 551  * define HAVE_NL_LANGINFO if your system has the nl_langinfo() call
 552  * and <langinfo.h> defines CODESET.
 553  */
 554 #undef HAVE_NL_LANGINFO
 555
 556 /*
 557  * Newer versions of Solaris include fdwalk, which can greatly improve
 558  * the startup time of screen; otherwise screen spends a lot of time
 559  * closing file descriptors.
 560  */
 561 #undef HAVE_FDWALK
 562
 563 /*
 564  * define HAVE_DEV_PTC if you have a /dev/ptc character special
 565  * device.
 566  */
 567 #undef HAVE_DEV_PTC
 568
 569 /*
 570  * define HAVE_SVR4_PTYS if you have a /dev/ptmx character special
 571  * device and support the ptsname(), grantpt(), unlockpt() functions.
 572  */
 573 #undef HAVE_SVR4_PTYS
 574
 575 /*
 576  * define PTYRANGE0 and or PTYRANGE1 if you want to adapt screen
 577  * to unusual environments. E.g. For SunOs the defaults are "qpr" and
 578  * "0123456789abcdef". For SunOs 4.1.2
 579  * #define PTYRANGE0 "pqrstuvwxyzPQRST"
 580  * is recommended by Dan Jacobson.
 581  */
 582 #undef PTYRANGE0
 583 #undef PTYRANGE1
 584