libptytty/ptytty.m4

AC_DEFUN([PT_FIND_FILE],
[AC_CACHE_CHECK(for a fallback location of $1, pt_cv_path_$1, [
if test "$cross_compiling" != yes; then
  for file in $3; do
    if test -f "$file"; then
      pt_cv_path_$1=$file
      break
    fi
  done
fi])
if test x$pt_cv_path_$1 != x; then
  AC_DEFINE_UNQUOTED($2, "$pt_cv_path_$1", Define to a fallback location of $1)
elif test "$cross_compiling" = yes; then
  AC_MSG_WARN(Define $2 in config.h manually)
fi])

AC_DEFUN([PTY_CHECK],
[
AC_CHECK_HEADERS( \
  pty.h \
  util.h \
  libutil.h \
  sys/ioctl.h \
  stropts.h \
)

AC_CHECK_FUNCS( \
  revoke \
  _getpty \
  getpt \
  posix_openpt \
  isastream \
  setuid \
  seteuid \
  setreuid \
  setresuid \
)

AC_MSG_CHECKING(for UNIX98 ptys)
AC_LINK_IFELSE(
  [AC_LANG_PROGRAM(
     [[#include <stdlib.h>]],
     [[grantpt(0);unlockpt(0);ptsname(0);]])],
  [unix98_pty=yes
   AC_DEFINE(UNIX98_PTY, 1, "")
   AC_MSG_RESULT(yes)],
  [AC_MSG_RESULT(no)])

if test -z "$unix98_pty"; then
  AC_SEARCH_LIBS(openpty, util, AC_DEFINE(HAVE_OPENPTY, 1, ""))
fi
])

AC_DEFUN([UTMP_CHECK],
[
support_utmp=yes
support_wtmp=yes
support_lastlog=yes

AC_ARG_ENABLE(utmp,
  [AS_HELP_STRING([--enable-utmp],[enable utmp (utmpx) support])],
  [if test x$enableval = xyes -o x$enableval = xno; then
    support_utmp=$enableval
  fi])

AC_ARG_ENABLE(wtmp,
  [AS_HELP_STRING([--enable-wtmp],[enable wtmp (wtmpx) support (requires --enable-utmp)])],
  [if test x$enableval = xyes -o x$enableval = xno; then
    support_wtmp=$enableval
  fi])

AC_ARG_ENABLE(lastlog,
  [AS_HELP_STRING([--enable-lastlog],[enable lastlog support (requires --enable-utmp)])],
  [if test x$enableval = xyes -o x$enableval = xno; then
    support_lastlog=$enableval
  fi])

if test x$support_utmp = xyes; then
  AC_DEFINE(UTMP_SUPPORT, 1, Define if you want to have utmp/utmpx support)
fi
if test x$support_wtmp = xyes; then
  AC_DEFINE(WTMP_SUPPORT, 1, Define if you want to have wtmp support when utmp/utmpx is enabled)
fi
if test x$support_lastlog = xyes; then
  AC_DEFINE(LASTLOG_SUPPORT, 1, Define if you want to have lastlog support when utmp/utmpx is enabled)
fi

case $host in
   *-*-solaris*)
      AC_DEFINE(__EXTENSIONS__, 1, Enable declarations in utmp.h on Solaris when the XPG4v2 namespace is active)
      ;;
esac

AC_CHECK_HEADERS(utmp.h, [
AC_CHECK_TYPES([struct utmp], [], [], [
#include <sys/types.h>
#include <utmp.h>
])

AC_CHECK_MEMBER([struct utmp.ut_host],
[AC_DEFINE(HAVE_UTMP_HOST, 1, Define if struct utmp contains ut_host)], [], [
#include <sys/types.h>
#include <utmp.h>
])

AC_CHECK_MEMBER([struct utmp.ut_pid],
[AC_DEFINE(HAVE_UTMP_PID, 1, Define if struct utmp contains ut_pid)], [], [
#include <sys/types.h>
#include <utmp.h>
])

AC_CHECK_FUNCS([updwtmp])

AC_CHECK_HEADERS([lastlog.h])

AC_CHECK_TYPES([struct lastlog], [], [], [
#include <sys/types.h>
#include <utmp.h>
#ifdef HAVE_LASTLOG_H
#include <lastlog.h>
#endif
])

PT_FIND_FILE([utmp], [PT_UTMP_FILE],
["/var/run/utmp" "/var/adm/utmp" "/etc/utmp" "/usr/etc/utmp" "/usr/adm/utmp"])

PT_FIND_FILE([wtmp], [PT_WTMP_FILE],
["/var/log/wtmp" "/var/adm/wtmp" "/etc/wtmp" "/usr/etc/wtmp" "/usr/adm/wtmp"])

PT_FIND_FILE([lastlog], [PT_LASTLOG_FILE],
["/var/log/lastlog" "/var/adm/lastlog"])

])

AC_CHECK_HEADERS(utmpx.h, [
AC_CHECK_TYPES([struct utmpx], [], [], [
#include <sys/types.h>
#include <utmpx.h>
])

AC_CHECK_MEMBER([struct utmpx.ut_host],
[AC_DEFINE(HAVE_UTMPX_HOST, 1, Define if struct utmpx contains ut_host)], [], [
#include <sys/types.h>
#include <utmpx.h>
])

AC_CHECK_FUNCS([updwtmpx updlastlogx])

AC_CHECK_TYPES([struct lastlogx], [], [], [
#include <sys/types.h>
#include <utmpx.h>
])

PT_FIND_FILE([wtmpx], [PT_WTMPX_FILE],
["/var/log/wtmpx" "/var/adm/wtmpx"])

PT_FIND_FILE([lastlogx], [PT_LASTLOGX_FILE],
["/var/log/lastlogx" "/var/adm/lastlogx"])
])

])

AC_DEFUN([SCM_RIGHTS_CHECK],
[
AH_TEMPLATE([_XOPEN_SOURCE], [Enable declarations of msg_control and msg_controllen on Solaris])
case $host in
   *-*-solaris*)
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#if __STDC_VERSION__ >= 199901L
error
#endif
]])],[AC_DEFINE(_XOPEN_SOURCE, 500)],[AC_DEFINE(_XOPEN_SOURCE, 600)])
      AC_SEARCH_LIBS(sendmsg, socket)
      ;;
esac

AC_CACHE_CHECK(for unix-compliant filehandle passing ability, pt_cv_can_pass_fds,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <stddef.h> // broken bsds (is that redundant?) need this
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
]], [[
{
  msghdr msg;
  iovec iov;
  char buf [100];
  char data = 0;

  iov.iov_base = &data;
  iov.iov_len  = 1;

  msg.msg_iov        = &iov;
  msg.msg_iovlen     = 1;
  msg.msg_control    = buf;
  msg.msg_controllen = sizeof buf;

  cmsghdr *cmsg = CMSG_FIRSTHDR (&msg);
  cmsg->cmsg_level = SOL_SOCKET;
  cmsg->cmsg_type  = SCM_RIGHTS;
  cmsg->cmsg_len   = 100;

  *(int *)CMSG_DATA (cmsg) = 5;

  return sendmsg (3, &msg, 0);
}
]])],[pt_cv_can_pass_fds=yes],[pt_cv_can_pass_fds=no])])
if test x$pt_cv_can_pass_fds = xyes; then
   AC_DEFINE(HAVE_UNIX_FDPASS, 1, Define if sys/socket.h defines the necessary macros/functions for file handle passing)
else
   AC_MSG_ERROR([libptytty requires unix-compliant filehandle passing ability])
fi
])

AC_DEFUN([TTY_GROUP_CHECK],
[
AC_CACHE_CHECK([for tty group], pt_cv_tty_group,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <grp.h>

int main()
{
  struct stat st;
  struct group *gr;
  char *tty;
  gr = getgrnam("tty");
  tty = ttyname(0);
  if (gr != 0
      && tty != 0
      && (stat(tty, &st)) == 0
      && st.st_gid == gr->gr_gid)
    return 0;
  else
    return 1;
}]])],[pt_cv_tty_group=yes],[pt_cv_tty_group=no],[pt_cv_tty_group=no])])
if test x$pt_cv_tty_group = xyes; then
  AC_DEFINE(TTY_GID_SUPPORT, 1, "")
fi])

Revision:	1.40
Committed:	Thu May 27 14:48:26 2021 UTC (2 years, 11 months ago) by sf-exg
Branch:	MAIN
Changes since 1.39:	+25 -53 lines
Log Message:	Rearrange utmp(x) tests
#	User	Rev	Content
1	sf-exg	1.24	AC_DEFUN([PT_FIND_FILE],
2	sf-exg	1.31	[AC_CACHE_CHECK(for a fallback location of $1, pt_cv_path_$1, [
3			if test "$cross_compiling" != yes; then
4			for file in $3; do
5			if test -f "$file"; then
6			pt_cv_path_$1=$file
7			break
8			fi
9			done
10			fi])
11	sf-exg	1.24	if test x$pt_cv_path_$1 != x; then
12	sf-exg	1.31	AC_DEFINE_UNQUOTED($2, "$pt_cv_path_$1", Define to a fallback location of $1)
13			elif test "$cross_compiling" = yes; then
14			AC_MSG_WARN(Define $2 in config.h manually)
15	sf-exg	1.24	fi])
16
17	ayin	1.1	AC_DEFUN([PTY_CHECK],
18			[
19			AC_CHECK_HEADERS( \
20			pty.h \
21			util.h \
22			libutil.h \
23			sys/ioctl.h \
24	root	1.17	stropts.h \
25	ayin	1.1	)
26
27			AC_CHECK_FUNCS( \
28			revoke \
29			_getpty \
30			getpt \
31			posix_openpt \
32			isastream \
33	root	1.7	setuid \
34			seteuid \
35			setreuid \
36			setresuid \
37	ayin	1.1	)
38
39	sf-exg	1.29	AC_MSG_CHECKING(for UNIX98 ptys)
40			AC_LINK_IFELSE(
41			[AC_LANG_PROGRAM(
42			[[#include <stdlib.h>]],
43			[[grantpt(0);unlockpt(0);ptsname(0);]])],
44			[unix98_pty=yes
45			AC_DEFINE(UNIX98_PTY, 1, "")
46			AC_MSG_RESULT(yes)],
47			[AC_MSG_RESULT(no)])
48	ayin	1.1
49			if test -z "$unix98_pty"; then
50	sf-exg	1.21	AC_SEARCH_LIBS(openpty, util, AC_DEFINE(HAVE_OPENPTY, 1, ""))
51	ayin	1.1	fi
52			])
53
54			AC_DEFUN([UTMP_CHECK],
55			[
56	ayin	1.5	support_utmp=yes
57			support_wtmp=yes
58			support_lastlog=yes
59
60	ayin	1.4	AC_ARG_ENABLE(utmp,
61	ayin	1.11	[AS_HELP_STRING([--enable-utmp],[enable utmp (utmpx) support])],
62	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
63			support_utmp=$enableval
64			fi])
65
66			AC_ARG_ENABLE(wtmp,
67	ayin	1.11	[AS_HELP_STRING([--enable-wtmp],[enable wtmp (wtmpx) support (requires --enable-utmp)])],
68	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
69			support_wtmp=$enableval
70			fi])
71
72			AC_ARG_ENABLE(lastlog,
73	ayin	1.11	[AS_HELP_STRING([--enable-lastlog],[enable lastlog support (requires --enable-utmp)])],
74	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
75			support_lastlog=$enableval
76			fi])
77
78			if test x$support_utmp = xyes; then
79			AC_DEFINE(UTMP_SUPPORT, 1, Define if you want to have utmp/utmpx support)
80			fi
81			if test x$support_wtmp = xyes; then
82			AC_DEFINE(WTMP_SUPPORT, 1, Define if you want to have wtmp support when utmp/utmpx is enabled)
83			fi
84			if test x$support_lastlog = xyes; then
85			AC_DEFINE(LASTLOG_SUPPORT, 1, Define if you want to have lastlog support when utmp/utmpx is enabled)
86			fi
87
88	sf-exg	1.34	case $host in
89			--solaris*)
90			AC_DEFINE(__EXTENSIONS__, 1, Enable declarations in utmp.h on Solaris when the XPG4v2 namespace is active)
91			;;
92			esac
93
94	sf-exg	1.39	AC_CHECK_HEADERS(utmp.h, [
95	sf-exg	1.26	AC_CHECK_TYPES([struct utmp], [], [], [
96			#include <sys/types.h>
97			#include <utmp.h>
98			])
99	ayin	1.1
100	sf-exg	1.26	AC_CHECK_MEMBER([struct utmp.ut_host],
101			[AC_DEFINE(HAVE_UTMP_HOST, 1, Define if struct utmp contains ut_host)], [], [
102			#include <sys/types.h>
103			#include <utmp.h>
104			])
105	ayin	1.1
106	sf-exg	1.26	AC_CHECK_MEMBER([struct utmp.ut_pid],
107			[AC_DEFINE(HAVE_UTMP_PID, 1, Define if struct utmp contains ut_pid)], [], [
108			#include <sys/types.h>
109			#include <utmp.h>
110			])
111	ayin	1.1
112	sf-exg	1.40	AC_CHECK_FUNCS([updwtmp])
113
114			AC_CHECK_HEADERS([lastlog.h])
115
116			AC_CHECK_TYPES([struct lastlog], [], [], [
117			#include <sys/types.h>
118			#include <utmp.h>
119			#ifdef HAVE_LASTLOG_H
120			#include <lastlog.h>
121			#endif
122			])
123
124			PT_FIND_FILE([utmp], [PT_UTMP_FILE],
125			["/var/run/utmp" "/var/adm/utmp" "/etc/utmp" "/usr/etc/utmp" "/usr/adm/utmp"])
126
127			PT_FIND_FILE([wtmp], [PT_WTMP_FILE],
128			["/var/log/wtmp" "/var/adm/wtmp" "/etc/wtmp" "/usr/etc/wtmp" "/usr/adm/wtmp"])
129
130			PT_FIND_FILE([lastlog], [PT_LASTLOG_FILE],
131			["/var/log/lastlog" "/var/adm/lastlog"])
132
133			])
134	ayin	1.1
135	sf-exg	1.39	AC_CHECK_HEADERS(utmpx.h, [
136	sf-exg	1.26	AC_CHECK_TYPES([struct utmpx], [], [], [
137			#include <sys/types.h>
138			#include <utmpx.h>
139			])
140	ayin	1.1
141	sf-exg	1.26	AC_CHECK_MEMBER([struct utmpx.ut_host],
142			[AC_DEFINE(HAVE_UTMPX_HOST, 1, Define if struct utmpx contains ut_host)], [], [
143			#include <sys/types.h>
144			#include <utmpx.h>
145			])
146	ayin	1.1
147	sf-exg	1.40	AC_CHECK_FUNCS([updwtmpx updlastlogx])
148	ayin	1.1
149	sf-exg	1.26	AC_CHECK_TYPES([struct lastlogx], [], [], [
150			#include <sys/types.h>
151	ayin	1.1	#include <utmpx.h>
152	sf-exg	1.26	])
153	ayin	1.1
154	sf-exg	1.31	PT_FIND_FILE([wtmpx], [PT_WTMPX_FILE],
155			["/var/log/wtmpx" "/var/adm/wtmpx"])
156	ayin	1.1
157	sf-exg	1.31	PT_FIND_FILE([lastlogx], [PT_LASTLOGX_FILE],
158			["/var/log/lastlogx" "/var/adm/lastlogx"])
159	ayin	1.1	])
160
161	sf-exg	1.40	])
162
163	ayin	1.1	AC_DEFUN([SCM_RIGHTS_CHECK],
164			[
165	sf-exg	1.38	AH_TEMPLATE([_XOPEN_SOURCE], [Enable declarations of msg_control and msg_controllen on Solaris])
166	sf-exg	1.34	case $host in
167			--solaris*)
168	sf-exg	1.38	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
169			#if __STDC_VERSION__ >= 199901L
170			error
171			#endif
172			]])],[AC_DEFINE(_XOPEN_SOURCE, 500)],[AC_DEFINE(_XOPEN_SOURCE, 600)])
173	sf-exg	1.34	AC_SEARCH_LIBS(sendmsg, socket)
174			;;
175			esac
176
177	sf-exg	1.18	AC_CACHE_CHECK(for unix-compliant filehandle passing ability, pt_cv_can_pass_fds,
178	ayin	1.16	[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
179	sf-exg	1.36	#include <stddef.h> // broken bsds (is that redundant?) need this
180	ayin	1.1	#include <sys/types.h>
181			#include <sys/socket.h>
182			#include <sys/uio.h>
183	ayin	1.16	]], [[
184	ayin	1.1	{
185			msghdr msg;
186			iovec iov;
187			char buf [100];
188			char data = 0;
189
190			iov.iov_base = &data;
191			iov.iov_len = 1;
192
193			msg.msg_iov = &iov;
194			msg.msg_iovlen = 1;
195			msg.msg_control = buf;
196			msg.msg_controllen = sizeof buf;
197
198			cmsghdr *cmsg = CMSG_FIRSTHDR (&msg);
199			cmsg->cmsg_level = SOL_SOCKET;
200			cmsg->cmsg_type = SCM_RIGHTS;
201			cmsg->cmsg_len = 100;
202
203			(int )CMSG_DATA (cmsg) = 5;
204
205			return sendmsg (3, &msg, 0);
206			}
207	sf-exg	1.18	]])],[pt_cv_can_pass_fds=yes],[pt_cv_can_pass_fds=no])])
208			if test x$pt_cv_can_pass_fds = xyes; then
209	ayin	1.1	AC_DEFINE(HAVE_UNIX_FDPASS, 1, Define if sys/socket.h defines the necessary macros/functions for file handle passing)
210			else
211			AC_MSG_ERROR([libptytty requires unix-compliant filehandle passing ability])
212			fi
213			])
214	ayin	1.3
215			AC_DEFUN([TTY_GROUP_CHECK],
216			[
217	sf-exg	1.18	AC_CACHE_CHECK([for tty group], pt_cv_tty_group,
218	ayin	1.16	[AC_RUN_IFELSE([AC_LANG_SOURCE([[
219	ayin	1.3	#include <sys/types.h>
220			#include <sys/stat.h>
221			#include <unistd.h>
222			#include <grp.h>
223
224	sf-exg	1.22	int main()
225	ayin	1.3	{
226			struct stat st;
227			struct group *gr;
228			char *tty;
229			gr = getgrnam("tty");
230			tty = ttyname(0);
231			if (gr != 0
232			&& tty != 0
233			&& (stat(tty, &st)) == 0
234			&& st.st_gid == gr->gr_gid)
235			return 0;
236			else
237			return 1;
238	sf-exg	1.18	}]])],[pt_cv_tty_group=yes],[pt_cv_tty_group=no],[pt_cv_tty_group=no])])
239			if test x$pt_cv_tty_group = xyes; then
240	ayin	1.3	AC_DEFINE(TTY_GID_SUPPORT, 1, "")
241			fi])
242