From bc38f04072b1141ef5451184815f82fa83e33944 Mon Sep 17 00:00:00 2001
From: Gerhard Rieger <gerhard@dest-unreach.org>
Date: Sat, 22 Jun 2013 14:39:16 +0200
Subject: [PATCH] Android build script with pty code

---
 CHANGES                          |  2 +
 socat_buildscript_for_android.sh | 89 ++++++++++++++++++++++++++++++--
 2 files changed, 87 insertions(+), 4 deletions(-)

diff --git a/CHANGES b/CHANGES
index 485ee84..4d83fa9 100644
--- a/CHANGES
+++ b/CHANGES
@@ -73,6 +73,8 @@ porting:
 	Mike Frysinger provided a patch that supports long long for time_t,
 	socklen_t and a few other libc types.
 
+	Artem Mygaiev extended Cedril Priscals Android build script with pty code
+
 docu:
 	libwrap always logs to syslog
 
diff --git a/socat_buildscript_for_android.sh b/socat_buildscript_for_android.sh
index 31448a8..464af43 100755
--- a/socat_buildscript_for_android.sh
+++ b/socat_buildscript_for_android.sh
@@ -40,14 +40,95 @@ ${ROOT}/configure \
  CC="${OUT}/toolchain/bin/arm-linux-androideabi-gcc" \
  || exit 1
 
-# Replace misconfigured values in config.h
+# Replace misconfigured values in config.h and enable PTY functions
 mv config.h config.old
 cat config.old \
- | sed 's/CRDLY_SHIFT/CRDLY_SHIFT 9/' \
- | sed 's/TABDLY_SHIFT/TABDLY_SHIFT 11/' \
- | sed 's/CSIZE_SHIFT/CSIZE_SHIFT 4/' \
+ | sed 's/CRDLY_SHIFT.*/CRDLY_SHIFT 9/' \
+ | sed 's/TABDLY_SHIFT.*/TABDLY_SHIFT 11/' \
+ | sed 's/CSIZE_SHIFT.*/CSIZE_SHIFT 4/' \
+ | sed 's/\/\* #undef HAVE_OPENPTY \*\//#define HAVE_OPENPTY 1/' \
+ | sed 's/\/\* #undef HAVE_GRANTPT \*\//#define HAVE_GRANTPT 1/' \
  > config.h
 
+# Enable openpty() in Makefile
+mv Makefile Makefile.old
+cat Makefile.old | sed 's/error.c/error.c openpty.c/' > Makefile
+
+# Provide openpty.c
+cat >openpty.c <<EOF
+/* Copyright (C) 1998, 1999, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+#define _PATH_DEVPTMX "/dev/ptmx"
+
+int openpty (int *amaster, int *aslave, char *name, struct termios *termp,
+		struct winsize *winp)
+{
+	char buf[PATH_MAX];
+	int master, slave;
+
+	master = open(_PATH_DEVPTMX, O_RDWR);
+	if (master == -1)
+		return -1;
+
+	if (grantpt(master))
+		goto fail;
+
+	if (unlockpt(master))
+		goto fail;
+
+	if (ptsname_r(master, buf, sizeof buf))
+		goto fail;
+
+	slave = open(buf, O_RDWR | O_NOCTTY);
+	if (slave == -1)
+		goto fail;
+
+	/* XXX Should we ignore errors here?  */
+	if (termp)
+		tcsetattr(slave, TCSAFLUSH, termp);
+	if (winp)
+		ioctl(slave, TIOCSWINSZ, winp);
+
+	*amaster = master;
+	*aslave = slave;
+	if (name != NULL)
+		strcpy(name, buf);
+
+	return 0;
+
+fail:
+	close(master);
+	return -1;
+}
+EOF
+
 # Compile
 make socat || exit 1