Added all files

1 files changed, 200 insertions, 0 deletions

diff --git a/xlators/encryption/rot-13/src/rot-13.c b/xlators/encryption/rot-13/src/rot-13.c
new file mode 100644
index 000000000..7cae46134
--- /dev/null
+++ b/xlators/encryption/rot-13/src/rot-13.c
@@ -0,0 +1,200 @@
+/*
+  Copyright (c) 2006, 2007, 2008 Z RESEARCH, Inc. <http://www.zresearch.com>
+  This file is part of GlusterFS.
+
+  GlusterFS 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.
+
+  GlusterFS 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 this program.  If not, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+#include <ctype.h>
+#include <sys/uio.h>
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#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 stat *stbuf)
+{
+	rot_13_private_t *priv = (rot_13_private_t *)this->private;
+  
+	if (priv->decrypt_read)
+		rot13_iovec (vector, count);
+
+	STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf);
+	return 0;
+}
+
+int32_t
+rot13_readv (call_frame_t *frame,
+             xlator_t *this,
+             fd_t *fd,
+             size_t size,
+             off_t offset)
+{
+	STACK_WIND (frame,
+		    rot13_readv_cbk,
+		    FIRST_CHILD (this),
+		    FIRST_CHILD (this)->fops->readv,
+		    fd, size, offset);
+	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 stat *stbuf)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, stbuf);
+	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)
+{
+	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);
+	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 = CALLOC (sizeof (rot_13_private_t), 1);
+	ERR_ABORT (priv);
+	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");
+			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");
+			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;
+	
+	FREE (priv);
+	
+	return;
+}
+
+struct xlator_fops fops = {
+	.readv        = rot13_readv,
+	.writev       = rot13_writev
+};
+
+struct xlator_mops mops = {
+};
+
+
+struct volume_options options[] = {
+	{ .key  = {"encrypt-write"}, 
+	  .type = GF_OPTION_TYPE_BOOL
+	},
+	{ .key  = {"decrypt-read"}, 
+	  .type = GF_OPTION_TYPE_BOOL 
+	},
+	{ .key  = {NULL} },
+};