libptytty/ptytty.m4

dnl this file is part of libptytty, do not make local modifications
dnl http://software.schmorp.de/pkg/libptytty

AC_DEFUN([PT_FIND_FILE],
[AC_CACHE_CHECK(where $1 is located, pt_cv_path_$1,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_LASTLOG_H
#include <lastlog.h>
#endif
int main()
{
    const char **path, *list[] = { $4, NULL };
    FILE *f = fopen("conftestval", "w");
    if (!f) return 1;
#ifdef $2
    fprintf(f, "%s\n", $2);
#elif defined($3)
    fprintf(f, "%s\n", $3);
#else
    for (path = list; *path; path++) {
        struct stat st;
        if (stat(*path, &st) == 0) {
            fprintf(f, "%s\n", *path);
            break;
        }
    }
#endif
    return fclose(f) != 0;
}]])],[pt_cv_path_$1=`cat conftestval`],[pt_cv_path_$1=],
[AC_MSG_WARN(Define $2 in config.h manually)])])
if test x$pt_cv_path_$1 != x; then
  AC_DEFINE_UNQUOTED($2, "$pt_cv_path_$1", Define location of $1)
fi])

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

AC_CHECK_FUNCS( \
        updwtmp \
        updwtmpx \
        updlastlogx \
)

AC_CHECK_HEADERS(lastlog.h)

dnl# --------------------------------------------------------------------------
dnl# DO ALL UTMP AND WTMP CHECKING
dnl# --------------------------------------------------------------------------
dnl# check for host field in utmp structure

dnl# --------------------------------------------
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>
])
) dnl# AC_CHECK_HEADERS(utmp.h

dnl# --------------------------------------------

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_MEMBER([struct utmpx.ut_session],
[AC_DEFINE(HAVE_UTMPX_SESSION, 1, Define if struct utmpx contains ut_session)], [], [
#include <sys/types.h>
#include <utmpx.h>
])
) dnl# AC_CHECK_HEADERS(utmpx.h

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

dnl# check for struct lastlogx
AC_CHECK_TYPES([struct lastlogx], [], [], [
#include <sys/types.h>
#include <utmpx.h>
#ifdef HAVE_LASTLOG_H
#include <lastlog.h>
#endif
])

dnl# --------------------------------------------------------------------------
dnl# FIND FILES
dnl# --------------------------------------------------------------------------

dnl# find utmp
PT_FIND_FILE([utmp], [UTMP_FILE], [_PATH_UTMP],
["/var/run/utmp", "/var/adm/utmp", "/etc/utmp", "/usr/etc/utmp", "/usr/adm/utmp"])

dnl# --------------------------------------------------------------------------

dnl# find wtmp
PT_FIND_FILE([wtmp], [WTMP_FILE], [_PATH_WTMP],
["/var/log/wtmp", "/var/adm/wtmp", "/etc/wtmp", "/usr/etc/wtmp", "/usr/adm/wtmp"])
dnl# --------------------------------------------------------------------------

dnl# find wtmpx
PT_FIND_FILE([wtmpx], [WTMPX_FILE], [_PATH_WTMPX],
["/var/log/wtmpx", "/var/adm/wtmpx"])
dnl# --------------------------------------------------------------------------

dnl# find lastlog
PT_FIND_FILE([lastlog], [LASTLOG_FILE], [_PATH_LASTLOG],
["/var/log/lastlog"])
dnl# --------------------------------------------------------------------------

dnl# find lastlogx
PT_FIND_FILE([lastlogx], [LASTLOGX_FILE], [_PATH_LASTLOGX],
["/var/log/lastlogx", "/var/adm/lastlogx"])
])

AC_DEFUN([SCM_RIGHTS_CHECK],
[
AC_CACHE_CHECK(for unix-compliant filehandle passing ability, pt_cv_can_pass_fds,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <cstddef> // 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:	1.30
Committed:	Wed Nov 23 19:29:27 2011 UTC (12 years, 6 months ago) by sf-exg
Branch:	MAIN
Changes since 1.29:	+15 -30 lines
Log Message:	Simplify.
#	User	Rev	Content
1	root	1.2	dnl this file is part of libptytty, do not make local modifications
2			dnl http://software.schmorp.de/pkg/libptytty
3
4	sf-exg	1.24	AC_DEFUN([PT_FIND_FILE],
5			[AC_CACHE_CHECK(where $1 is located, pt_cv_path_$1,
6			[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdio.h>
7			#include <stdlib.h>
8	sf-exg	1.25	#include <sys/stat.h>
9	sf-exg	1.30	#include <sys/types.h>
10			#ifdef HAVE_UTMPX_H
11			#include <utmpx.h>
12			#endif
13			#ifdef HAVE_UTMP_H
14			#include <utmp.h>
15			#endif
16			#ifdef HAVE_LASTLOG_H
17			#include <lastlog.h>
18			#endif
19	sf-exg	1.24	int main()
20			{
21	sf-exg	1.27	const char *path, list[] = { $4, NULL };
22	sf-exg	1.25	FILE *f = fopen("conftestval", "w");
23			if (!f) return 1;
24	sf-exg	1.24	#ifdef $2
25			fprintf(f, "%s\n", $2);
26	sf-exg	1.25	#elif defined($3)
27	sf-exg	1.24	fprintf(f, "%s\n", $3);
28	sf-exg	1.25	#else
29	sf-exg	1.24	for (path = list; *path; path++) {
30	sf-exg	1.25	struct stat st;
31			if (stat(*path, &st) == 0) {
32	sf-exg	1.24	fprintf(f, "%s\n", *path);
33	sf-exg	1.25	break;
34	sf-exg	1.24	}
35			}
36	sf-exg	1.25	#endif
37			return fclose(f) != 0;
38	sf-exg	1.24	}]])],[pt_cv_path_$1=`cat conftestval`],[pt_cv_path_$1=],
39			[AC_MSG_WARN(Define $2 in config.h manually)])])
40			if test x$pt_cv_path_$1 != x; then
41			AC_DEFINE_UNQUOTED($2, "$pt_cv_path_$1", Define location of $1)
42			fi])
43
44	ayin	1.1	AC_DEFUN([PTY_CHECK],
45			[
46			AC_CHECK_HEADERS( \
47			pty.h \
48			util.h \
49			libutil.h \
50			sys/ioctl.h \
51			sys/stropts.h \
52	root	1.17	stropts.h \
53	ayin	1.1	)
54
55			AC_CHECK_FUNCS( \
56			revoke \
57			_getpty \
58			getpt \
59			posix_openpt \
60			isastream \
61	root	1.7	setuid \
62			seteuid \
63			setreuid \
64			setresuid \
65	ayin	1.1	)
66
67	sf-exg	1.29	AC_MSG_CHECKING(for UNIX98 ptys)
68			AC_LINK_IFELSE(
69			[AC_LANG_PROGRAM(
70			[[#include <stdlib.h>]],
71			[[grantpt(0);unlockpt(0);ptsname(0);]])],
72			[unix98_pty=yes
73			AC_DEFINE(UNIX98_PTY, 1, "")
74			AC_MSG_RESULT(yes)],
75			[AC_MSG_RESULT(no)])
76	ayin	1.1
77			if test -z "$unix98_pty"; then
78	sf-exg	1.21	AC_SEARCH_LIBS(openpty, util, AC_DEFINE(HAVE_OPENPTY, 1, ""))
79	ayin	1.1	fi
80			])
81
82			AC_DEFUN([UTMP_CHECK],
83			[
84	ayin	1.5	support_utmp=yes
85			support_wtmp=yes
86			support_lastlog=yes
87
88	ayin	1.4	AC_ARG_ENABLE(utmp,
89	ayin	1.11	[AS_HELP_STRING([--enable-utmp],[enable utmp (utmpx) support])],
90	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
91			support_utmp=$enableval
92			fi])
93
94			AC_ARG_ENABLE(wtmp,
95	ayin	1.11	[AS_HELP_STRING([--enable-wtmp],[enable wtmp (wtmpx) support (requires --enable-utmp)])],
96	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
97			support_wtmp=$enableval
98			fi])
99
100			AC_ARG_ENABLE(lastlog,
101	ayin	1.11	[AS_HELP_STRING([--enable-lastlog],[enable lastlog support (requires --enable-utmp)])],
102	ayin	1.4	[if test x$enableval = xyes -o x$enableval = xno; then
103			support_lastlog=$enableval
104			fi])
105
106			if test x$support_utmp = xyes; then
107			AC_DEFINE(UTMP_SUPPORT, 1, Define if you want to have utmp/utmpx support)
108			fi
109			if test x$support_wtmp = xyes; then
110			AC_DEFINE(WTMP_SUPPORT, 1, Define if you want to have wtmp support when utmp/utmpx is enabled)
111			fi
112			if test x$support_lastlog = xyes; then
113			AC_DEFINE(LASTLOG_SUPPORT, 1, Define if you want to have lastlog support when utmp/utmpx is enabled)
114			fi
115
116	ayin	1.1	AC_CHECK_FUNCS( \
117			updwtmp \
118			updwtmpx \
119	ayin	1.12	updlastlogx \
120	ayin	1.1	)
121
122	ayin	1.15	AC_CHECK_HEADERS(lastlog.h)
123	ayin	1.1
124			dnl# --------------------------------------------------------------------------
125			dnl# DO ALL UTMP AND WTMP CHECKING
126			dnl# --------------------------------------------------------------------------
127			dnl# check for host field in utmp structure
128
129			dnl# --------------------------------------------
130	ayin	1.15	AC_CHECK_HEADERS(utmp.h,
131	sf-exg	1.26	AC_CHECK_TYPES([struct utmp], [], [], [
132			#include <sys/types.h>
133			#include <utmp.h>
134			])
135	ayin	1.1
136	sf-exg	1.26	AC_CHECK_MEMBER([struct utmp.ut_host],
137			[AC_DEFINE(HAVE_UTMP_HOST, 1, Define if struct utmp contains ut_host)], [], [
138			#include <sys/types.h>
139			#include <utmp.h>
140			])
141	ayin	1.1
142	sf-exg	1.26	AC_CHECK_MEMBER([struct utmp.ut_pid],
143			[AC_DEFINE(HAVE_UTMP_PID, 1, Define if struct utmp contains ut_pid)], [], [
144			#include <sys/types.h>
145			#include <utmp.h>
146			])
147	ayin	1.15	) dnl# AC_CHECK_HEADERS(utmp.h
148	ayin	1.1
149			dnl# --------------------------------------------
150
151	ayin	1.15	AC_CHECK_HEADERS(utmpx.h,
152	sf-exg	1.26	AC_CHECK_TYPES([struct utmpx], [], [], [
153			#include <sys/types.h>
154			#include <utmpx.h>
155			])
156	ayin	1.1
157	sf-exg	1.26	AC_CHECK_MEMBER([struct utmpx.ut_host],
158			[AC_DEFINE(HAVE_UTMPX_HOST, 1, Define if struct utmpx contains ut_host)], [], [
159			#include <sys/types.h>
160			#include <utmpx.h>
161			])
162	ayin	1.1
163	sf-exg	1.26	AC_CHECK_MEMBER([struct utmpx.ut_session],
164			[AC_DEFINE(HAVE_UTMPX_SESSION, 1, Define if struct utmpx contains ut_session)], [], [
165			#include <sys/types.h>
166			#include <utmpx.h>
167			])
168	ayin	1.15	) dnl# AC_CHECK_HEADERS(utmpx.h
169	ayin	1.1
170			dnl# --------------------------------------------------------------------------
171			dnl# check for struct lastlog
172	sf-exg	1.26	AC_CHECK_TYPES([struct lastlog], [], [], [
173			#include <sys/types.h>
174	ayin	1.1	#include <utmp.h>
175			#ifdef HAVE_LASTLOG_H
176			#include <lastlog.h>
177			#endif
178	sf-exg	1.26	])
179	ayin	1.1
180			dnl# check for struct lastlogx
181	sf-exg	1.26	AC_CHECK_TYPES([struct lastlogx], [], [], [
182			#include <sys/types.h>
183	ayin	1.1	#include <utmpx.h>
184			#ifdef HAVE_LASTLOG_H
185			#include <lastlog.h>
186			#endif
187	sf-exg	1.26	])
188	ayin	1.1
189			dnl# --------------------------------------------------------------------------
190			dnl# FIND FILES
191			dnl# --------------------------------------------------------------------------
192
193			dnl# find utmp
194	sf-exg	1.24	PT_FIND_FILE([utmp], [UTMP_FILE], [_PATH_UTMP],
195	sf-exg	1.30	["/var/run/utmp", "/var/adm/utmp", "/etc/utmp", "/usr/etc/utmp", "/usr/adm/utmp"])
196	ayin	1.1
197			dnl# --------------------------------------------------------------------------
198
199			dnl# find wtmp
200	sf-exg	1.24	PT_FIND_FILE([wtmp], [WTMP_FILE], [_PATH_WTMP],
201	sf-exg	1.30	["/var/log/wtmp", "/var/adm/wtmp", "/etc/wtmp", "/usr/etc/wtmp", "/usr/adm/wtmp"])
202	ayin	1.1	dnl# --------------------------------------------------------------------------
203
204			dnl# find wtmpx
205	sf-exg	1.24	PT_FIND_FILE([wtmpx], [WTMPX_FILE], [_PATH_WTMPX],
206	sf-exg	1.30	["/var/log/wtmpx", "/var/adm/wtmpx"])
207	ayin	1.1	dnl# --------------------------------------------------------------------------
208
209			dnl# find lastlog
210	sf-exg	1.24	PT_FIND_FILE([lastlog], [LASTLOG_FILE], [_PATH_LASTLOG],
211	sf-exg	1.30	["/var/log/lastlog"])
212	ayin	1.1	dnl# --------------------------------------------------------------------------
213
214			dnl# find lastlogx
215	sf-exg	1.24	PT_FIND_FILE([lastlogx], [LASTLOGX_FILE], [_PATH_LASTLOGX],
216	sf-exg	1.30	["/var/log/lastlogx", "/var/adm/lastlogx"])
217	ayin	1.1	])
218
219			AC_DEFUN([SCM_RIGHTS_CHECK],
220			[
221	sf-exg	1.18	AC_CACHE_CHECK(for unix-compliant filehandle passing ability, pt_cv_can_pass_fds,
222	ayin	1.16	[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
223	root	1.6	#include <cstddef> // broken bsds (is that redundant?) need this
224	ayin	1.1	#include <sys/types.h>
225			#include <sys/socket.h>
226			#include <sys/uio.h>
227	ayin	1.16	]], [[
228	ayin	1.1	{
229			msghdr msg;
230			iovec iov;
231			char buf [100];
232			char data = 0;
233
234			iov.iov_base = &data;
235			iov.iov_len = 1;
236
237			msg.msg_iov = &iov;
238			msg.msg_iovlen = 1;
239			msg.msg_control = buf;
240			msg.msg_controllen = sizeof buf;
241
242			cmsghdr *cmsg = CMSG_FIRSTHDR (&msg);
243			cmsg->cmsg_level = SOL_SOCKET;
244			cmsg->cmsg_type = SCM_RIGHTS;
245			cmsg->cmsg_len = 100;
246
247			(int )CMSG_DATA (cmsg) = 5;
248
249			return sendmsg (3, &msg, 0);
250			}
251	sf-exg	1.18	]])],[pt_cv_can_pass_fds=yes],[pt_cv_can_pass_fds=no])])
252			if test x$pt_cv_can_pass_fds = xyes; then
253	ayin	1.1	AC_DEFINE(HAVE_UNIX_FDPASS, 1, Define if sys/socket.h defines the necessary macros/functions for file handle passing)
254			else
255			AC_MSG_ERROR([libptytty requires unix-compliant filehandle passing ability])
256			fi
257			])
258	ayin	1.3
259			AC_DEFUN([TTY_GROUP_CHECK],
260			[
261	sf-exg	1.18	AC_CACHE_CHECK([for tty group], pt_cv_tty_group,
262	ayin	1.16	[AC_RUN_IFELSE([AC_LANG_SOURCE([[
263	ayin	1.3	#include <sys/types.h>
264			#include <sys/stat.h>
265			#include <unistd.h>
266			#include <grp.h>
267
268	sf-exg	1.22	int main()
269	ayin	1.3	{
270			struct stat st;
271			struct group *gr;
272			char *tty;
273			gr = getgrnam("tty");
274			tty = ttyname(0);
275			if (gr != 0
276			&& tty != 0
277			&& (stat(tty, &st)) == 0
278			&& st.st_gid == gr->gr_gid)
279			return 0;
280			else
281			return 1;
282	sf-exg	1.18	}]])],[pt_cv_tty_group=yes],[pt_cv_tty_group=no],[pt_cv_tty_group=no])])
283			if test x$pt_cv_tty_group = xyes; then
284	ayin	1.3	AC_DEFINE(TTY_GID_SUPPORT, 1, "")
285			fi])
286