414 lines
12 KiB
Plaintext
414 lines
12 KiB
Plaintext
dnl Local m4 macros for autoconf (used by sudo)
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dnl
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dnl Copyright (c) 1994-1996, 1998-2005, 2007-2015
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dnl Todd C. Miller <Todd.Miller@courtesan.com>
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dnl
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dnl XXX - should cache values in all cases!!!
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dnl
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dnl checks for programs
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dnl
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dnl check for sendmail in well-known locations
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dnl
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AC_ARG_VAR([SENDMAILPROG], [The fully-qualified path to the sendmail program to use.])
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AC_DEFUN([SUDO_PROG_SENDMAIL], [
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AC_PATH_PROG([SENDMAILPROG], [sendmail], [], [/usr/sbin$PATH_SEPARATOR/usr/lib$PATH_SEPARATOR/usr/etc$PATH_SEPARATOR/usr/ucblib$PATH_SEPARATOR/usr/local/lib$PATH_SEPARATOR/usr/local/bin])
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test -n "${ac_cv_path_SENDMAILPROG}" && SUDO_DEFINE_UNQUOTED(_PATH_SUDO_SENDMAIL, "${ac_cv_path_SENDMAILPROG}")
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])dnl
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dnl
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dnl check for vi in well-known locations
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dnl
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AC_ARG_VAR([VIPROG], [The fully-qualified path to the vi program to use.])
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AC_DEFUN([SUDO_PROG_VI], [
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AC_PATH_PROG([VIPROG], [vi], [], [/usr/bin$PATH_SEPARATOR/bin$PATH_SEPARATOR/usr/ucb$PATH_SEPARATOR/usr/bsd$PATH_SEPARATOR/usr/local/bin])
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test -n "${ac_cv_path_VIPROG}" && SUDO_DEFINE_UNQUOTED(_PATH_VI, "${ac_cv_path_VIPROG}")
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])dnl
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dnl
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dnl check for mv in well-known locations
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dnl
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AC_ARG_VAR([MVPROG], [The fully-qualified path to the mv program to use.])
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AC_DEFUN([SUDO_PROG_MV], [
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AC_PATH_PROG([MVPROG], [mv], [], [/usr/bin$PATH_SEPARATOR/bin$PATH_SEPARATOR/usr/ucb$PATH_SEPARATOR/usr/local/bin])
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test -n "${ac_cv_path_MVPROG}" && SUDO_DEFINE_UNQUOTED(_PATH_MV, "${ac_cv_path_MVPROG}")
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])dnl
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dnl
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dnl check for bourne shell in well-known locations
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dnl
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AC_ARG_VAR([BSHELLPROG], [The fully-qualified path to the Bourne shell to use.])
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AC_DEFUN([SUDO_PROG_BSHELL], [
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AC_PATH_PROG([BSHELLPROG], [sh], [/usr/bin$PATH_SEPARATOR/bin$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin])
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test -n "${ac_cv_path_BSHELLPROG}" && SUDO_DEFINE_UNQUOTED(_PATH_BSHELL, "${ac_cv_path_BSHELLPROG}")
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])dnl
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dnl
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dnl check for utmp file
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dnl
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AC_DEFUN([SUDO_PATH_UTMP], [AC_MSG_CHECKING([for utmp file path])
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found=no
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for p in "/var/run/utmp" "/var/adm/utmp" "/etc/utmp"; do
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if test -r "$p"; then
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found=yes
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AC_MSG_RESULT([$p])
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SUDO_DEFINE_UNQUOTED(_PATH_UTMP, "$p")
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break
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fi
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done
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if test X"$found" != X"yes"; then
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AC_MSG_RESULT([not found])
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fi
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])dnl
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dnl
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dnl Where the log file goes, use /var/log if it exists, else /{var,usr}/adm
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dnl
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AC_DEFUN([SUDO_LOGFILE], [AC_MSG_CHECKING(for log file location)
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if test -n "$with_logpath"; then
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AC_MSG_RESULT($with_logpath)
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SUDO_DEFINE_UNQUOTED(_PATH_SUDO_LOGFILE, "$with_logpath")
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elif test -d "/var/log"; then
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AC_MSG_RESULT(/var/log/sudo.log)
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SUDO_DEFINE(_PATH_SUDO_LOGFILE, "/var/log/sudo.log")
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elif test -d "/var/adm"; then
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AC_MSG_RESULT(/var/adm/sudo.log)
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SUDO_DEFINE(_PATH_SUDO_LOGFILE, "/var/adm/sudo.log")
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elif test -d "/usr/adm"; then
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AC_MSG_RESULT(/usr/adm/sudo.log)
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SUDO_DEFINE(_PATH_SUDO_LOGFILE, "/usr/adm/sudo.log")
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else
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AC_MSG_RESULT(unknown, you will have to set _PATH_SUDO_LOGFILE by hand)
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fi
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])dnl
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dnl
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dnl Detect time zone file directory, if any.
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dnl
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AC_DEFUN([SUDO_TZDIR], [AC_MSG_CHECKING(time zone data directory)
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tzdir="$with_tzdir"
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if test -z "$tzdir"; then
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tzdir=no
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for d in /usr/share /usr/share/lib /usr/lib /etc; do
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if test -d "$d/zoneinfo"; then
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tzdir="$d/zoneinfo"
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break
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fi
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done
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fi
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AC_MSG_RESULT([$tzdir])
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if test "${tzdir}" != "no"; then
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SUDO_DEFINE_UNQUOTED(_PATH_ZONEINFO, "$tzdir")
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fi
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])dnl
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dnl
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dnl Parent directory for time stamp dir.
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dnl
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AC_DEFUN([SUDO_RUNDIR], [AC_MSG_CHECKING(for sudo run dir location)
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rundir="$with_rundir"
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if test -z "$rundir"; then
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for d in /var/run /var/db /var/lib /var/adm /usr/adm; do
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if test -d "$d"; then
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rundir="$d/sudo"
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break
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fi
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done
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fi
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AC_MSG_RESULT([$rundir])
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SUDO_DEFINE_UNQUOTED(_PATH_SUDO_TIMEDIR, "$rundir/ts")
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])dnl
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dnl
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dnl Parent directory for the lecture status dir.
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dnl
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AC_DEFUN([SUDO_VARDIR], [AC_MSG_CHECKING(for sudo var dir location)
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vardir="$with_vardir"
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if test -z "$vardir"; then
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for d in /var/db /var/lib /var/adm /usr/adm; do
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if test -d "$d"; then
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vardir="$d/sudo"
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break
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fi
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done
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fi
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AC_MSG_RESULT([$vardir])
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SUDO_DEFINE_UNQUOTED(_PATH_SUDO_LECTURE_DIR, "$vardir/lectured")
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])dnl
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dnl
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dnl Where the I/O log files go, use /var/log/sudo-io if
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dnl /var/log exists, else /{var,usr}/adm/sudo-io
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dnl
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AC_DEFUN([SUDO_IO_LOGDIR], [
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AC_MSG_CHECKING(for I/O log dir location)
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if test "${with_iologdir-yes}" != "yes"; then
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iolog_dir="$with_iologdir"
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elif test -d "/var/log"; then
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iolog_dir="/var/log/sudo-io"
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elif test -d "/var/adm"; then
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iolog_dir="/var/adm/sudo-io"
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else
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iolog_dir="/usr/adm/sudo-io"
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fi
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if test "${with_iologdir}" != "no"; then
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SUDO_DEFINE_UNQUOTED(_PATH_SUDO_IO_LOGDIR, "$iolog_dir")
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fi
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AC_MSG_RESULT($iolog_dir)
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])dnl
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dnl
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dnl check for working fnmatch(3)
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dnl
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AC_DEFUN([SUDO_FUNC_FNMATCH],
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[AC_MSG_CHECKING([for working fnmatch with FNM_CASEFOLD])
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AC_CACHE_VAL(sudo_cv_func_fnmatch,
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[rm -f conftestdata; > conftestdata
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AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <fnmatch.h>
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main() { exit(fnmatch("/*/bin/echo *", "/usr/bin/echo just a test", FNM_CASEFOLD)); }]])], [sudo_cv_func_fnmatch=yes], [sudo_cv_func_fnmatch=no],
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[sudo_cv_func_fnmatch=no])
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rm -f core core.* *.core])
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AC_MSG_RESULT($sudo_cv_func_fnmatch)
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AS_IF([test $sudo_cv_func_fnmatch = yes], [$1], [$2])])
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dnl
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dnl Attempt to check for working PIE support.
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dnl This is a bit of a hack but on Solaris 10 with GNU ld and GNU as
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dnl we can end up with strange values from malloc().
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dnl A better check would be to verify that ASLR works with PIE.
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dnl
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AC_DEFUN([SUDO_WORKING_PIE],
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[AC_MSG_CHECKING([for working PIE support])
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AC_CACHE_VAL(sudo_cv_working_pie,
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[rm -f conftestdata; > conftestdata
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AC_RUN_IFELSE([AC_LANG_SOURCE([AC_INCLUDES_DEFAULT
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main() { char *p = malloc(1024); if (p == NULL) return 1; memset(p, 0, 1024); return 0; }])], [sudo_cv_working_pie=yes], [sudo_cv_working_pie=no],
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[sudo_cv_working_pie=no])
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rm -f core core.* *.core])
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AC_MSG_RESULT($sudo_cv_working_pie)
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AS_IF([test $sudo_cv_working_pie = yes], [$1], [$2])])
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dnl
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dnl check for isblank(3)
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dnl
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AC_DEFUN([SUDO_FUNC_ISBLANK],
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[AC_CACHE_CHECK([for isblank], [sudo_cv_func_isblank],
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <ctype.h>]], [[return (isblank('a'));]])],
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[sudo_cv_func_isblank=yes], [sudo_cv_func_isblank=no])])
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] [
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if test "$sudo_cv_func_isblank" = "yes"; then
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AC_DEFINE(HAVE_ISBLANK, 1, [Define if you have isblank(3).])
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else
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AC_LIBOBJ(isblank)
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SUDO_APPEND_COMPAT_EXP(isblank)
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fi
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])
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AC_DEFUN([SUDO_CHECK_LIB], [
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_sudo_check_lib_extras=`echo "$5"|sed -e 's/[ ]*//g' -e 's/-l/_/g'`
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AC_MSG_CHECKING([for $2 in -l$1${5+ }$5])
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AC_CACHE_VAL([sudo_cv_lib_$1''_$2$_sudo_check_lib_extras], [
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SUDO_CHECK_LIB_OLIBS="$LIBS"
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LIBS="$LIBS -l$1${5+ }$5"
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AC_LINK_IFELSE(
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[AC_LANG_CALL([], [$2])],
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[eval sudo_cv_lib_$1''_$2$_sudo_check_lib_extras=yes],
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[eval sudo_cv_lib_$1''_$2$_sudo_check_lib_extras=no]
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)
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LIBS="$SUDO_CHECK_LIB_OLIBS"
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])
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if eval test \$sudo_cv_lib_$1''_$2$_sudo_check_lib_extras = "yes"; then
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AC_MSG_RESULT([yes])
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$3
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else
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AC_MSG_RESULT([no])
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$4
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fi
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])
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dnl
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dnl check unsetenv() return value
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dnl
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AC_DEFUN([SUDO_FUNC_UNSETENV_VOID],
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[AC_CACHE_CHECK([whether unsetenv returns void], [sudo_cv_func_unsetenv_void],
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[AC_RUN_IFELSE([AC_LANG_PROGRAM(
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[AC_INCLUDES_DEFAULT
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int unsetenv();
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], [
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[return unsetenv("FOO") != 0;]
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])
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],
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[sudo_cv_func_unsetenv_void=no],
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[sudo_cv_func_unsetenv_void=yes],
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[sudo_cv_func_unsetenv_void=no])])
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if test $sudo_cv_func_unsetenv_void = yes; then
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AC_DEFINE(UNSETENV_VOID, 1,
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[Define to 1 if the `unsetenv' function returns void instead of `int'.])
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fi
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])
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dnl
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dnl check putenv() argument for const
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dnl
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AC_DEFUN([SUDO_FUNC_PUTENV_CONST],
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[AC_CACHE_CHECK([whether putenv takes a const argument],
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sudo_cv_func_putenv_const,
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
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int putenv(const char *string) {return 0;}], [])],
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[sudo_cv_func_putenv_const=yes],
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[sudo_cv_func_putenv_const=no])
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])
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if test $sudo_cv_func_putenv_const = yes; then
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AC_DEFINE(PUTENV_CONST, const, [Define to const if the `putenv' takes a const argument.])
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else
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AC_DEFINE(PUTENV_CONST, [])
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fi
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])
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dnl
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dnl Check if the data argument for the sha2 functions is void * or u_char *
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dnl
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AC_DEFUN([SUDO_FUNC_SHA2_VOID_PTR],
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[AC_CACHE_CHECK([whether the data argument of SHA224Update() is void *],
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sudo_cv_func_sha2_void_ptr,
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
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#include <sha2.h>
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void SHA224Update(SHA2_CTX *context, const void *data, size_t len) {return;}], [])],
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[sudo_cv_func_sha2_void_ptr=yes],
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[sudo_cv_func_sha2_void_ptr=no])
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])
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if test $sudo_cv_func_sha2_void_ptr = yes; then
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AC_DEFINE(SHA2_VOID_PTR, 1,
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[Define to 1 if the sha2 functions use `const void *' instead of `const unsigned char'.])
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fi
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])
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dnl
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dnl check for sa_len field in struct sockaddr
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dnl
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AC_DEFUN([SUDO_SOCK_SA_LEN], [
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AC_CHECK_MEMBER([struct sockaddr.sa_len],
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[AC_DEFINE(HAVE_STRUCT_SOCKADDR_SA_LEN, 1, [Define if your struct sockaddr has an sa_len field.])],
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[], [
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# include <sys/types.h>
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# include <sys/socket.h>]
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)]
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)
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dnl
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dnl check for sin_len field in struct sockaddr_in
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dnl
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AC_DEFUN([SUDO_SOCK_SIN_LEN], [
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AC_CHECK_MEMBER([struct sockaddr_in.sin_len],
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[AC_DEFINE(HAVE_STRUCT_SOCKADDR_IN_SIN_LEN, 1, [Define if your struct sockaddr_in has a sin_len field.])],
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[], [
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# include <sys/types.h>
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# include <sys/socket.h>]
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)]
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)
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dnl
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dnl check for max length of uid_t in string representation.
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dnl we can't really trust UID_MAX or MAXUID since they may exist
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dnl only for backwards compatibility.
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dnl
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AC_DEFUN([SUDO_UID_T_LEN],
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[AC_REQUIRE([AC_TYPE_UID_T])
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AC_MSG_CHECKING(max length of uid_t)
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AC_CACHE_VAL(sudo_cv_uid_t_len,
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[rm -f conftestdata
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AC_RUN_IFELSE([AC_LANG_SOURCE([[
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#include <stdio.h>
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#include <pwd.h>
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#include <limits.h>
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#include <sys/types.h>
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main() {
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FILE *f;
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char b[1024];
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uid_t u = (uid_t) -1;
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if ((f = fopen("conftestdata", "w")) == NULL)
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exit(1);
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(void) sprintf(b, "%lu", (unsigned long) u);
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(void) fprintf(f, "%d\n", strlen(b));
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(void) fclose(f);
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exit(0);
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}]])], [sudo_cv_uid_t_len=`cat conftestdata`], [sudo_cv_uid_t_len=10], [sudo_cv_uid_t_len=10])
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])
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rm -f conftestdata
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AC_MSG_RESULT($sudo_cv_uid_t_len)
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AC_DEFINE_UNQUOTED(MAX_UID_T_LEN, $sudo_cv_uid_t_len, [Define to the max length of a uid_t in string context (excluding the NUL).])
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])
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dnl
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dnl Append a libpath to an LDFLAGS style variable if not already present.
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dnl Also appends to the _R version unless rpath is disabled.
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dnl
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AC_DEFUN([SUDO_APPEND_LIBPATH], [
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AX_APPEND_FLAG([-L$2], [$1])
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if test X"$enable_rpath" = X"yes"; then
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AX_APPEND_FLAG([-R$2], [$1_R])
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fi
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])
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dnl
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dnl Append one or more symbols to COMPAT_EXP
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dnl
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AC_DEFUN([SUDO_APPEND_COMPAT_EXP], [
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for _sym in $1; do
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COMPAT_EXP="${COMPAT_EXP}${_sym}
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"
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done
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])
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dnl
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dnl Determine the mail spool location
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dnl NOTE: must be run *after* check for paths.h
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dnl
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AC_DEFUN([SUDO_MAILDIR], [
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maildir=no
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if test X"$ac_cv_header_paths_h" = X"yes"; then
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
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#include <paths.h>],
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[char *p = _PATH_MAILDIR;])], [maildir=yes], [])
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fi
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if test $maildir = no; then
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# Solaris has maillock.h which defines MAILDIR
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AC_CHECK_HEADERS(maillock.h, [
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SUDO_DEFINE(_PATH_MAILDIR, MAILDIR)
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maildir=yes
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])
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if test $maildir = no; then
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for d in /var/mail /var/spool/mail /usr/spool/mail; do
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if test -d "$d"; then
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maildir=yes
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SUDO_DEFINE_UNQUOTED(_PATH_MAILDIR, "$d")
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break
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fi
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done
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if test $maildir = no; then
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# unable to find mail dir, hope for the best
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SUDO_DEFINE_UNQUOTED(_PATH_MAILDIR, "/var/mail")
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fi
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fi
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fi
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])
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dnl
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dnl private versions of AC_DEFINE and AC_DEFINE_UNQUOTED that don't support
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dnl tracing that we use to define paths for pathnames.h so autoheader doesn't
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dnl put them in config.h.in. An awful hack.
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dnl
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m4_define([SUDO_DEFINE],
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[cat >>confdefs.h <<\EOF
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[@%:@define] $1 m4_if($#, 2, [$2], $#, 3, [$2], 1)
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EOF
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])
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m4_define([SUDO_DEFINE_UNQUOTED],
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[cat >>confdefs.h <<EOF
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[@%:@define] $1 m4_if($#, 2, [$2], $#, 3, [$2], 1)
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EOF
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])
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