openssh: Fix building with unified headers

packages/openssh/build.sh

@@ -39,6 +39,7 @@ TERMUX_PKG_RM_AFTER_INSTALL="bin/slogin share/man/man1/slogin.1"
 termux_step_pre_configure() {
 	autoreconf
 
+	CPPFLAGS+=" -DHAVE_ATTRIBUTE__SENTINEL__=1"
 	LD=$CC # Needed to link the binaries
 	LDFLAGS+=" -llog" # liblog for android logging in syslog hack
 }

packages/openssh/session.c.patch

@@ -1,7 +1,7 @@
-diff -u -r ../openssh-7.2p2/session.c ./session.c
---- ../openssh-7.2p2/session.c	2016-03-09 13:04:48.000000000 -0500
-+++ ./session.c	2016-06-26 17:17:15.988592104 -0400
-@@ -196,7 +196,7 @@
+diff -u -r ../openssh-7.5p1/session.c ./session.c
+--- ../openssh-7.5p1/session.c	2017-03-20 03:39:27.000000000 +0100
++++ ./session.c	2017-06-30 22:51:57.404787949 +0200
+@@ -194,7 +194,7 @@
  	temporarily_use_uid(pw);
  
  	/* Allocate a buffer for the socket name, and format the name. */
@@ -10,7 +10,7 @@ diff -u -r ../openssh-7.2p2/session.c ./session.c
  
  	/* Create private directory for socket */
  	if (mkdtemp(auth_sock_dir) == NULL) {
-@@ -939,7 +939,7 @@
+@@ -756,7 +756,7 @@
  		f = fopen(login_getcapstr(lc, "welcome", "/etc/motd",
  		    "/etc/motd"), "r");
  #else
@@ -19,7 +19,18 @@ diff -u -r ../openssh-7.2p2/session.c ./session.c
  #endif
  		if (f) {
  			while (fgets(buf, sizeof(buf), f))
-@@ -1242,6 +1242,15 @@
+@@ -1047,8 +1047,10 @@
+ # endif /* HAVE_CYGWIN */
+ #endif /* HAVE_LOGIN_CAP */
+ 
++#ifdef _PATH_MAILDIR
+ 	snprintf(buf, sizeof buf, "%.200s/%.50s", _PATH_MAILDIR, pw->pw_name);
+ 	child_set_env(&env, &envsize, "MAIL", buf);
++#endif
+ 
+ 	/* Normal systems set SHELL by default. */
+ 	child_set_env(&env, &envsize, "SHELL", shell);
+@@ -1056,6 +1058,15 @@
  	if (getenv("TZ"))
  		child_set_env(&env, &envsize, "TZ", getenv("TZ"));
  
@@ -33,15 +44,5 @@ diff -u -r ../openssh-7.2p2/session.c ./session.c
 +#endif
 +
  	/* Set custom environment options from RSA authentication. */
- 	if (!options.use_login) {
- 		while (custom_environment) {
-@@ -1664,7 +1673,9 @@
- 	 * Close any extra file descriptors.  Note that there may still be
- 	 * descriptors left by system functions.  They will be closed later.
- 	 */
-+#ifndef __ANDROID__
- 	endpwent();
-+#endif
- 
- 	/*
- 	 * Close any extra open file descriptors so that we don't have them
+ 	while (custom_environment) {
+ 		struct envstring *ce = custom_environment;