encryption: Move all xlators to experimentalexp

rot-13 is never meant to be used in production. crypt requires
a lot more attention before it can be ready for production.
Hence moving both xlators to experimental.

Change-Id: I6dce653c88e2ede109f3031ab9e8f318ce7d87cb
Signed-off-by: Vijay Bellur <vbellur@redhat.com>

4 files changed, 233 insertions, 0 deletions

diff --git a/xlators/experimental/encryption/rot-13/Makefile.am b/xlators/experimental/encryption/rot-13/Makefile.am
new file mode 100644
index 00000000000..d471a3f9243
--- /dev/null
+++ b/xlators/experimental/encryption/rot-13/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src
+
+CLEANFILES = 
diff --git a/xlators/experimental/encryption/rot-13/src/Makefile.am b/xlators/experimental/encryption/rot-13/src/Makefile.am
new file mode 100644
index 00000000000..1b4bb921279
--- /dev/null
+++ b/xlators/experimental/encryption/rot-13/src/Makefile.am
@@ -0,0 +1,16 @@
+xlator_LTLIBRARIES = rot-13.la
+xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/experimental/encryption
+
+rot_13_la_LDFLAGS = -module $(GF_XLATOR_DEFAULT_LDFLAGS)
+
+rot_13_la_SOURCES = rot-13.c
+rot_13_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la 
+
+noinst_HEADERS = rot-13.h
+
+AM_CPPFLAGS = $(GF_CPPFLAGS) -I$(top_srcdir)/libglusterfs/src \
+	-I$(top_srcdir)/rpc/xdr/src -I$(top_builddir)/rpc/xdr/src
+
+AM_CFLAGS = -Wall $(GF_CFLAGS)
+
+CLEANFILES = 
diff --git a/xlators/experimental/encryption/rot-13/src/rot-13.c b/xlators/experimental/encryption/rot-13/src/rot-13.c
new file mode 100644
index 00000000000..6ec1b47c87b
--- /dev/null
+++ b/xlators/experimental/encryption/rot-13/src/rot-13.c
@@ -0,0 +1,196 @@
+/*
+   Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
+   This file is part of GlusterFS.
+
+   This file is licensed to you under your choice of the GNU Lesser
+   General Public License, version 3 or any later version (LGPLv3 or
+   later), or the GNU General Public License, version 2 (GPLv2), in all
+   cases as published by the Free Software Foundation.
+*/
+#include <ctype.h>
+#include <sys/uio.h>
+
+#include "glusterfs.h"
+#include "xlator.h"
+#include "logging.h"
+
+#include "rot-13.h"
+
+/*
+ * This is a rot13 ``encryption'' xlator. It rot13's data when
+ * writing to disk and rot13's it back when reading it.
+ * This xlator is meant as an example, NOT FOR PRODUCTION
+ * USE ;) (hence no error-checking)
+ */
+
+void
+rot13 (char *buf, int len)
+{
+	int i;
+	for (i = 0; i < len; i++) {
+		if (buf[i] >= 'a' && buf[i] <= 'z')
+			buf[i] = 'a' + ((buf[i] - 'a' + 13) % 26);
+		else if (buf[i] >= 'A' && buf[i] <= 'Z')
+			buf[i] = 'A' + ((buf[i] - 'A' + 13) % 26);
+	}
+}
+
+void
+rot13_iovec (struct iovec *vector, int count)
+{
+	int i;
+	for (i = 0; i < count; i++) {
+		rot13 (vector[i].iov_base, vector[i].iov_len);
+	}
+}
+
+int32_t
+rot13_readv_cbk (call_frame_t *frame,
+                 void *cookie,
+                 xlator_t *this,
+                 int32_t op_ret,
+                 int32_t op_errno,
+                 struct iovec *vector,
+                 int32_t count,
+		 struct iatt *stbuf,
+                 struct iobref *iobref, dict_t *xdata)
+{
+	rot_13_private_t *priv = (rot_13_private_t *)this->private;
+
+	if (priv->decrypt_read)
+		rot13_iovec (vector, count);
+
+	STACK_UNWIND_STRICT (readv, frame, op_ret, op_errno, vector, count,
+                             stbuf, iobref, xdata);
+	return 0;
+}
+
+int32_t
+rot13_readv (call_frame_t *frame,
+             xlator_t *this,
+             fd_t *fd,
+             size_t size,
+             off_t offset, uint32_t flags, dict_t *xdata)
+{
+	STACK_WIND (frame,
+		    rot13_readv_cbk,
+		    FIRST_CHILD (this),
+		    FIRST_CHILD (this)->fops->readv,
+		    fd, size, offset, flags, xdata);
+	return 0;
+}
+
+int32_t
+rot13_writev_cbk (call_frame_t *frame,
+                  void *cookie,
+                  xlator_t *this,
+                  int32_t op_ret,
+                  int32_t op_errno,
+                  struct iatt *prebuf,
+		  struct iatt *postbuf, dict_t *xdata)
+{
+	STACK_UNWIND_STRICT (writev, frame, op_ret, op_errno, prebuf, postbuf,
+                             xdata);
+	return 0;
+}
+
+int32_t
+rot13_writev (call_frame_t *frame,
+              xlator_t *this,
+              fd_t *fd,
+              struct iovec *vector,
+              int32_t count,
+              off_t offset, uint32_t flags,
+              struct iobref *iobref, dict_t *xdata)
+{
+	rot_13_private_t *priv = (rot_13_private_t *)this->private;
+	if (priv->encrypt_write)
+		rot13_iovec (vector, count);
+
+	STACK_WIND (frame,
+		    rot13_writev_cbk,
+		    FIRST_CHILD (this),
+		    FIRST_CHILD (this)->fops->writev,
+		    fd, vector, count, offset, flags,
+                    iobref, xdata);
+	return 0;
+}
+
+int32_t
+init (xlator_t *this)
+{
+	data_t *data = NULL;
+	rot_13_private_t *priv = NULL;
+
+	if (!this->children || this->children->next) {
+		gf_log ("rot13", GF_LOG_ERROR,
+			"FATAL: rot13 should have exactly one child");
+		return -1;
+	}
+
+	if (!this->parents) {
+		gf_log (this->name, GF_LOG_WARNING,
+			"dangling volume. check volfile ");
+	}
+
+	priv = GF_CALLOC (sizeof (rot_13_private_t), 1, 0);
+        if (!priv)
+                return -1;
+
+	priv->decrypt_read = 1;
+	priv->encrypt_write = 1;
+
+	data = dict_get (this->options, "encrypt-write");
+	if (data) {
+		if (gf_string2boolean (data->data, &priv->encrypt_write) == -1) {
+			gf_log (this->name, GF_LOG_ERROR,
+				"encrypt-write takes only boolean options");
+			GF_FREE (priv);
+			return -1;
+		}
+	}
+
+	data = dict_get (this->options, "decrypt-read");
+	if (data) {
+		if (gf_string2boolean (data->data, &priv->decrypt_read) == -1) {
+			gf_log (this->name, GF_LOG_ERROR,
+				"decrypt-read takes only boolean options");
+			GF_FREE (priv);
+			return -1;
+		}
+	}
+
+	this->private = priv;
+	gf_log ("rot13", GF_LOG_DEBUG, "rot13 xlator loaded");
+	return 0;
+}
+
+void
+fini (xlator_t *this)
+{
+	rot_13_private_t *priv = this->private;
+
+        if (!priv)
+                return;
+        this->private = NULL;
+	GF_FREE (priv);
+
+	return;
+}
+
+struct xlator_fops fops = {
+	.readv        = rot13_readv,
+	.writev       = rot13_writev
+};
+
+struct xlator_cbks cbks;
+
+struct volume_options options[] = {
+	{ .key  = {"encrypt-write"},
+	  .type = GF_OPTION_TYPE_BOOL
+	},
+	{ .key  = {"decrypt-read"},
+	  .type = GF_OPTION_TYPE_BOOL
+	},
+	{ .key  = {NULL} },
+};
diff --git a/xlators/experimental/encryption/rot-13/src/rot-13.h b/xlators/experimental/encryption/rot-13/src/rot-13.h
new file mode 100644
index 00000000000..a2017513437
--- /dev/null
+++ b/xlators/experimental/encryption/rot-13/src/rot-13.h
@@ -0,0 +1,18 @@
+/*
+   Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
+   This file is part of GlusterFS.
+
+   This file is licensed to you under your choice of the GNU Lesser
+   General Public License, version 3 or any later version (LGPLv3 or
+   later), or the GNU General Public License, version 2 (GPLv2), in all
+   cases as published by the Free Software Foundation.
+*/
+#ifndef __ROT_13_H__
+#define __ROT_13_H__
+
+typedef struct {
+	gf_boolean_t encrypt_write;
+	gf_boolean_t decrypt_read;
+} rot_13_private_t;
+
+#endif /* __ROT_13_H__ */