From c81fcbca39f8f154f2d0a94b391203cc8aa52093 Mon Sep 17 00:00:00 2001
From: Jacob Barthelmeh <jacob@wolfssl.com>
Date: Tue, 24 May 2022 17:05:53 -0600
Subject: [PATCH] initial autotools sshd addition

---
 .gitignore      |  3 +++
 Makefile.am     |  1 +
 apps/include.am | 13 +++++++++++++
 apps/wolfsshd.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 configure.ac    |  9 +++++++++
 5 files changed, 73 insertions(+)
 create mode 100644 apps/include.am
 create mode 100644 apps/wolfsshd.c

diff --git a/.gitignore b/.gitignore
index cad67e11..6a688fca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,6 +54,9 @@ examples/portfwd/portfwd
 examples/sftpclient/wolfsftp
 examples/scpclient/wolfscp
 
+# applications
+apps/wolfsshd
+
 # test output
 tests/*.test
 *.trs
diff --git a/Makefile.am b/Makefile.am
index 51838c46..f03df800 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -33,6 +33,7 @@ EXTRA_DIST+= LICENSING README.md ChangeLog.md
 
 include src/include.am
 include wolfssh/include.am
+include apps/include.am
 include examples/include.am
 include tests/include.am
 include keys/include.am
diff --git a/apps/include.am b/apps/include.am
new file mode 100644
index 00000000..437139c1
--- /dev/null
+++ b/apps/include.am
@@ -0,0 +1,13 @@
+# vim:ft=automake
+# All paths should be given relative to the root
+
+if BUILD_SSHD
+bin_PROGRAMS += apps/wolfsshd
+noinst_HEADERS += examples/client/client.h
+apps_wolfsshd_SOURCES = apps/wolfsshd.c
+apps_wolfsshd_LDADD        = src/libwolfssh.la
+apps_wolfsshd_DEPENDENCIES = src/libwolfssh.la
+endif
+
+DISTCLEANFILES+= apps/.libs/wolfsshd
+
diff --git a/apps/wolfsshd.c b/apps/wolfsshd.c
new file mode 100644
index 00000000..c97ed940
--- /dev/null
+++ b/apps/wolfsshd.c
@@ -0,0 +1,47 @@
+/* wolfsshd.c
+ *
+ * Copyright (C) 2014-2021 wolfSSL Inc.
+ *
+ * This file is part of wolfSSH.
+ *
+ * wolfSSH is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSH 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with wolfSSH.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
+#ifdef WOLFSSH_SSHD
+
+#include <wolfssh/ssh.h>
+#include <wolfssh/internal.h>
+#include <wolfssh/log.h>
+#include <wolfssl/wolfcrypt/wc_port.h>
+#include <wolfssl/wolfcrypt/error-crypt.h>
+
+#ifdef NO_INLINE
+    #include <wolfssh/misc.h>
+#else
+    #define WOLFSSH_MISC_INCLUDED
+    #include "src/misc.c"
+#endif
+
+int main(int argc, char** argv)
+{
+    (void)argc;
+    (void)argv;
+    printf("wolfSSH SSHD application\n");
+    return 0;
+}
+#endif /* WOLFSSH_SSHD */
diff --git a/configure.ac b/configure.ac
index 88ecbe93..071585d9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -171,6 +171,11 @@ AC_ARG_ENABLE([sftp],
     [AS_HELP_STRING([--enable-sftp],[Enable SFTP support (default: disabled)])],
     [ENABLED_SFTP=$enableval],[ENABLED_SFTP=no])
 
+# SSHD
+AC_ARG_ENABLE([sshd],
+    [AS_HELP_STRING([--enable-sshd],[Enable SSHD support (default: disabled)])],
+    [ENABLED_SSHD=$enableval],[ENABLED_SSHD=no])
+
 # TCP/IP Forwarding
 AC_ARG_ENABLE([fwd],
     [AS_HELP_STRING([--enable-fwd],[Enable TCP/IP Forwarding support (default: disabled)])],
@@ -230,6 +235,8 @@ AS_IF([test "x$ENABLED_SHELL" = "xyes"],
 AS_IF([test "x$ENABLED_AGENT" = "xyes"],[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_AGENT"])
 AS_IF([test "x$ENABLED_SMALLSTACK" = "xyes"],
        [AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_SMALL_STACK"])
+AS_IF([test "x$ENABLED_SSHD" = "xyes"],
+       [AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_SSHD"])
 
 # Set the automake conditionals.
 AM_CONDITIONAL([BUILD_EXAMPLE_SERVERS],[test "x$ENABLED_EXAMPLES" = "xyes"])
@@ -242,6 +249,7 @@ AM_CONDITIONAL([BUILD_FWD],[test "x$ENABLED_FWD" = "xyes"])
 AM_CONDITIONAL([BUILD_TERM],[test "x$ENABLED_TERM" = "xyes"])
 AM_CONDITIONAL([BUILD_SHELL],[test "x$ENABLED_SHELL" = "xyes"])
 AM_CONDITIONAL([BUILD_AGENT],[test "x$ENABLED_AGENT" = "xyes"])
+AM_CONDITIONAL([BUILD_SSHD],[test "x$ENABLED_SSHD" = "xyes"])
 
 AX_HARDEN_CC_COMPILER_FLAGS
 
@@ -282,6 +290,7 @@ AS_ECHO(["   * psuedo-terminal:           $ENABLED_PTERM"])
 AS_ECHO(["   * echoserver shell support:  $ENABLED_SHELL"])
 AS_ECHO(["   * scp:                       $ENABLED_SCP"])
 AS_ECHO(["   * sftp:                      $ENABLED_SFTP"])
+AS_ECHO(["   * sshd:                      $ENABLED_SSHD"])
 AS_ECHO(["   * agent:                     $ENABLED_AGENT"])
 AS_ECHO(["   * TCP/IP Forwarding:         $ENABLED_FWD"])
 AS_ECHO(["   * Examples:                  $ENABLED_EXAMPLES"])