2009-03-27 Sebastian Huber <sebastian.huber@embedded-brains.de>

	* Makefile.am, preinstall.am, libmisc/Makefile.am,
	libmisc/shell/shell.c, libmisc/shell/shell.h, telnetd/check_passwd.c,
	telnetd/telnetd.c, telnetd/telnetd.h:
	Generalized login check.
	* libmisc/shell/login.h, libmisc/shell/login_check.c,
	libmisc/shell/login_prompt.c: New files.
	* libmisc/stackchk/check.c: Changed format for blown stack message.
	* libcsupport/src/libio_sockets.c: Removed superfluous cast.
	* libnetworking/rtems/ftpfs.h: Documentation.

1 files changed, 58 insertions, 0 deletions

diff --git a/cpukit/libmisc/shell/login_check.c b/cpukit/libmisc/shell/login_check.c
new file mode 100644
index 0000000000..066ab16b61
--- /dev/null
+++ b/cpukit/libmisc/shell/login_check.c
@@ -0,0 +1,58 @@
+/**
+ * @file
+ *
+ * @author Sebastian Huber <sebastian.huber@embedded-brains.de>
+ *
+ * @brief Shell login check function.
+ */
+
+/*
+ * Copyright (c) 2009
+ * Embedded Brains GmbH
+ * Obere Lagerstr. 30
+ * D-82178 Puchheim
+ * Germany
+ * rtems@embedded-brains.de
+ *
+ * Based on work from Chris Johns, Fernando Ruiz and Till Straumann.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <pwd.h>
+
+#include <rtems/login.h>
+#include <rtems/shell.h>
+#include <rtems/userenv.h>
+
+bool rtems_shell_login_check(
+  const char *user,
+  const char *passphrase
+)
+{
+  struct passwd *pw = getpwnam( user);
+
+  /* Valid user? */
+  if (pw != NULL && strcmp( pw->pw_passwd, "!") != 0) {
+    setuid( pw->pw_uid);
+    setgid( pw->pw_gid);
+    rtems_current_user_env->euid = 0;
+    rtems_current_user_env->egid = 0;
+    chown( rtems_current_shell_env->devname, pw->pw_uid, 0);
+    rtems_current_user_env->euid = pw->pw_uid;
+    rtems_current_user_env->egid = pw->pw_gid;
+    if (strcmp( pw->pw_passwd, "*") == 0) {
+      /* TODO: /etc/shadow */
+      return true;
+    } else {
+      /* TODO: crypt() */
+      return true;
+    }
+  }
+
+  return false;
+}