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authorDavid Disseldorp <ddiss@samba.org>2013-01-15 17:23:10 +0100
committerJeremy Allison <jra@samba.org>2013-01-16 23:15:07 +0100
commitcb323281c1f2b66f2b42527cda722e57ca1f1f23 (patch)
tree324d4dbf100cee51cf37fdc76e0c4523bc8078f5 /source3
parent456724f05d79733fe805a3209231c565d69d2be3 (diff)
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smb2_ioctl: copychunk CHECK_READ and CHECK_WRITE
[MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request, specifies that the copychunk destination file handle be granted FILE_WRITE_DATA and FILE_READ_DATA access. FILE_READ_DATA access must also be granted on the copychunk source file, which may be done implicitly with execute permission. Reviewed by: Jeremy Allison <jra@samba.org>
Diffstat (limited to 'source3')
-rw-r--r--source3/smbd/smb2_ioctl_network_fs.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/source3/smbd/smb2_ioctl_network_fs.c b/source3/smbd/smb2_ioctl_network_fs.c
index 5721a4cc63..125aaaee38 100644
--- a/source3/smbd/smb2_ioctl_network_fs.c
+++ b/source3/smbd/smb2_ioctl_network_fs.c
@@ -23,6 +23,7 @@
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
+#include "../libcli/security/security.h"
#include "../lib/util/tevent_ntstatus.h"
#include "../lib/ccan/build_assert/build_assert.h"
#include "include/ntioctl.h"
@@ -207,6 +208,30 @@ static struct tevent_req *fsctl_srv_copychunk_send(TALLOC_CTX *mem_ctx,
}
state->dst_fsp = dst_fsp;
+ /*
+ * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
+ * If Open.GrantedAccess of the destination file does not
+ * include FILE_WRITE_DATA, then the request MUST be failed with
+ * STATUS_ACCESS_DENIED. If Open.GrantedAccess of the
+ * destination file does not include FILE_READ_DATA access and
+ * the CtlCode is FSCTL_SRV_COPYCHUNK, then the request MUST be
+ * failed with STATUS_ACCESS_DENIED.
+ */
+ if (!CHECK_WRITE(state->dst_fsp)) {
+ state->status = NT_STATUS_ACCESS_DENIED;
+ tevent_req_nterror(req, state->status);
+ return tevent_req_post(req, ev);
+ }
+ if (!CHECK_READ(state->dst_fsp, smb2req->smb1req)) {
+ state->status = NT_STATUS_ACCESS_DENIED;
+ tevent_req_nterror(req, state->status);
+ return tevent_req_post(req, ev);
+ }
+ if (!CHECK_READ(state->src_fsp, smb2req->smb1req)) {
+ state->status = NT_STATUS_ACCESS_DENIED;
+ tevent_req_nterror(req, state->status);
+ return tevent_req_post(req, ev);
+ }
state->status = copychunk_check_limits(&cc_copy);
if (tevent_req_nterror(req, state->status)) {