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-rw-r--r--xlators/encryption/rot-13/Makefile.am3
-rw-r--r--xlators/encryption/rot-13/src/Makefile.am14
-rw-r--r--xlators/encryption/rot-13/src/rot-13.c200
-rw-r--r--xlators/encryption/rot-13/src/rot-13.h33
4 files changed, 250 insertions, 0 deletions
diff --git a/xlators/encryption/rot-13/Makefile.am b/xlators/encryption/rot-13/Makefile.am
new file mode 100644
index 00000000000..d471a3f9243
--- /dev/null
+++ b/xlators/encryption/rot-13/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src
+
+CLEANFILES =
diff --git a/xlators/encryption/rot-13/src/Makefile.am b/xlators/encryption/rot-13/src/Makefile.am
new file mode 100644
index 00000000000..ba5e623d8e2
--- /dev/null
+++ b/xlators/encryption/rot-13/src/Makefile.am
@@ -0,0 +1,14 @@
+xlator_LTLIBRARIES = rot-13.la
+xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/encryption
+
+rot_13_la_LDFLAGS = -module -avoidversion
+
+rot_13_la_SOURCES = rot-13.c
+rot_13_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la
+
+noinst_HEADERS = rot-13.h
+
+AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS) \
+ -I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS)
+
+CLEANFILES =
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 00000000000..7cae46134c2
--- /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} },
+};
diff --git a/xlators/encryption/rot-13/src/rot-13.h b/xlators/encryption/rot-13/src/rot-13.h
new file mode 100644
index 00000000000..43e60c32615
--- /dev/null
+++ b/xlators/encryption/rot-13/src/rot-13.h
@@ -0,0 +1,33 @@
+/*
+ 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/>.
+*/
+
+#ifndef __ROT_13_H__
+#define __ROT_13_H__
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+typedef struct {
+ gf_boolean_t encrypt_write;
+ gf_boolean_t decrypt_read;
+} rot_13_private_t;
+
+#endif /* __ROT_13_H__ */
generated by cgit (git 2.34.1) at 2024-11-14 15:18:18 +0000