*/
#include "includes.h"
+#include "smbd/smbd.h"
#include "smbd/globals.h"
-#include "../source4/libcli/smb2/smb2_constants.h"
+#include "../libcli/smb/smb_common.h"
+#include "../lib/util/tevent_ntstatus.h"
+#include "include/ntioctl.h"
+#include "smb2_ioctl_private.h"
static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbd_smb2_request *smb2req,
+ struct files_struct *in_fsp,
uint32_t in_ctl_code,
- uint64_t in_file_id_volatile,
DATA_BLOB in_input,
uint32_t in_max_output,
uint32_t in_flags);
static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
- DATA_BLOB *out_output);
+ DATA_BLOB *out_output,
+ bool *disconnect);
static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq);
NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req)
{
- const uint8_t *inhdr;
+ NTSTATUS status;
const uint8_t *inbody;
- int i = req->current_idx;
- size_t expected_body_size = 0x39;
- size_t body_size;
+ uint32_t min_buffer_offset;
+ uint32_t max_buffer_offset;
+ uint32_t min_output_offset;
+ uint32_t allowed_length_in;
+ uint32_t allowed_length_out;
uint32_t in_ctl_code;
uint64_t in_file_id_persistent;
uint64_t in_file_id_volatile;
+ struct files_struct *in_fsp = NULL;
uint32_t in_input_offset;
uint32_t in_input_length;
- DATA_BLOB in_input_buffer;
+ DATA_BLOB in_input_buffer = data_blob_null;
+ uint32_t in_max_input_length;
+ uint32_t in_output_offset;
+ uint32_t in_output_length;
+ DATA_BLOB in_output_buffer = data_blob_null;
uint32_t in_max_output_length;
uint32_t in_flags;
+ uint32_t data_length_in;
+ uint32_t data_length_out;
+ uint32_t data_length_tmp;
+ uint32_t data_length_max;
struct tevent_req *subreq;
- inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
- if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
- }
-
- inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
-
- body_size = SVAL(inbody, 0x00);
- if (body_size != expected_body_size) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ status = smbd_smb2_request_verify_sizes(req, 0x39);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
}
+ inbody = SMBD_SMB2_IN_BODY_PTR(req);
in_ctl_code = IVAL(inbody, 0x04);
in_file_id_persistent = BVAL(inbody, 0x08);
in_file_id_volatile = BVAL(inbody, 0x10);
in_input_offset = IVAL(inbody, 0x18);
in_input_length = IVAL(inbody, 0x1C);
+ in_max_input_length = IVAL(inbody, 0x20);
+ in_output_offset = IVAL(inbody, 0x24);
+ in_output_length = IVAL(inbody, 0x28);
in_max_output_length = IVAL(inbody, 0x2C);
in_flags = IVAL(inbody, 0x30);
- if (in_input_offset != (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
+ min_buffer_offset = SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(req);
+ max_buffer_offset = min_buffer_offset + SMBD_SMB2_IN_DYN_LEN(req);
+ min_output_offset = min_buffer_offset;
+
+ /*
+ * InputOffset (4 bytes): The offset, in bytes, from the beginning of
+ * the SMB2 header to the input data buffer. If no input data is
+ * required for the FSCTL/IOCTL command being issued, the client SHOULD
+ * set this value to 0.<49>
+ * <49> If no input data is required for the FSCTL/IOCTL command being
+ * issued, Windows-based clients set this field to any value.
+ */
+ allowed_length_in = 0;
+ if ((in_input_offset > 0) && (in_input_length > 0)) {
+ uint32_t tmp_ofs;
+
+ if (in_input_offset < min_buffer_offset) {
+ return smbd_smb2_request_error(req,
+ NT_STATUS_INVALID_PARAMETER);
+ }
+ if (in_input_offset > max_buffer_offset) {
+ return smbd_smb2_request_error(req,
+ NT_STATUS_INVALID_PARAMETER);
+ }
+ allowed_length_in = max_buffer_offset - in_input_offset;
+
+ tmp_ofs = in_input_offset - min_buffer_offset;
+ in_input_buffer.data = SMBD_SMB2_IN_DYN_PTR(req);
+ in_input_buffer.data += tmp_ofs;
+ in_input_buffer.length = in_input_length;
+ min_output_offset += tmp_ofs;
+ min_output_offset += in_input_length;
+ }
+
+ if (in_input_length > allowed_length_in) {
+ return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ }
+
+ allowed_length_out = 0;
+ if (in_output_offset > 0) {
+ if (in_output_offset < min_buffer_offset) {
+ return smbd_smb2_request_error(req,
+ NT_STATUS_INVALID_PARAMETER);
+ }
+ if (in_output_offset > max_buffer_offset) {
+ return smbd_smb2_request_error(req,
+ NT_STATUS_INVALID_PARAMETER);
+ }
+ allowed_length_out = max_buffer_offset - in_output_offset;
+ }
+
+ if (in_output_length > allowed_length_out) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
- if (in_input_length > req->in.vector[i+2].iov_len) {
+ if (in_output_length > 0) {
+ uint32_t tmp_ofs;
+
+ if (in_output_offset < min_output_offset) {
+ return smbd_smb2_request_error(req,
+ NT_STATUS_INVALID_PARAMETER);
+ }
+
+ tmp_ofs = in_output_offset - min_buffer_offset;
+ in_output_buffer.data = SMBD_SMB2_IN_DYN_PTR(req);
+ in_output_buffer.data += tmp_ofs;
+ in_output_buffer.length = in_output_length;
+ }
+
+ /*
+ * verify the credits and avoid overflows
+ * in_input_buffer.length and in_output_buffer.length
+ * are already verified.
+ */
+ data_length_in = in_input_buffer.length + in_output_buffer.length;
+
+ data_length_out = in_max_input_length;
+ data_length_tmp = UINT32_MAX - data_length_out;
+ if (data_length_tmp < in_max_output_length) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
+ data_length_out += in_max_output_length;
+
+ data_length_max = MAX(data_length_in, data_length_out);
+
+ status = smbd_smb2_request_verify_creditcharge(req, data_length_max);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
+ }
- in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
- in_input_buffer.length = in_input_length;
+ /*
+ * If the Flags field of the request is not SMB2_0_IOCTL_IS_FSCTL the
+ * server MUST fail the request with STATUS_NOT_SUPPORTED.
+ */
+ if (in_flags != SMB2_IOCTL_FLAG_IS_FSCTL) {
+ return smbd_smb2_request_error(req, NT_STATUS_NOT_SUPPORTED);
+ }
- if (req->compat_chain_fsp) {
- /* skip check */
- } else if (in_file_id_persistent == UINT64_MAX &&
- in_file_id_volatile == UINT64_MAX) {
- /* without a handle */
- } else if (in_file_id_persistent != 0) {
- return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
+ switch (in_ctl_code) {
+ case FSCTL_DFS_GET_REFERRALS:
+ case FSCTL_DFS_GET_REFERRALS_EX:
+ case FSCTL_PIPE_WAIT:
+ case FSCTL_VALIDATE_NEGOTIATE_INFO_224:
+ case FSCTL_VALIDATE_NEGOTIATE_INFO:
+ case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
+ /*
+ * Some SMB2 specific CtlCodes like FSCTL_DFS_GET_REFERRALS or
+ * FSCTL_PIPE_WAIT does not take a file handle.
+ *
+ * If FileId in the SMB2 Header of the request is not
+ * 0xFFFFFFFFFFFFFFFF, then the server MUST fail the request
+ * with STATUS_INVALID_PARAMETER.
+ */
+ if (in_file_id_persistent != UINT64_MAX ||
+ in_file_id_volatile != UINT64_MAX) {
+ return smbd_smb2_request_error(req,
+ NT_STATUS_INVALID_PARAMETER);
+ }
+ break;
+ default:
+ in_fsp = file_fsp_smb2(req, in_file_id_persistent,
+ in_file_id_volatile);
+ if (in_fsp == NULL) {
+ return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
+ }
+ break;
}
- subreq = smbd_smb2_ioctl_send(req,
- req->conn->smb2.event_ctx,
- req,
+ subreq = smbd_smb2_ioctl_send(req, req->sconn->ev_ctx,
+ req, in_fsp,
in_ctl_code,
- in_file_id_volatile,
in_input_buffer,
in_max_output_length,
in_flags);
}
tevent_req_set_callback(subreq, smbd_smb2_request_ioctl_done, req);
- if (tevent_req_is_in_progress(subreq)) {
- return smbd_smb2_request_pending_queue(req);
- }
-
- return NT_STATUS_OK;
+ return smbd_smb2_request_pending_queue(req, subreq, 1000);
}
static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq)
struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
struct smbd_smb2_request);
const uint8_t *inbody;
- int i = req->current_idx;
- uint8_t *outhdr;
DATA_BLOB outbody;
DATA_BLOB outdyn;
uint32_t in_ctl_code;
uint64_t in_file_id_volatile;
uint32_t out_input_offset;
uint32_t out_output_offset;
- DATA_BLOB out_output_buffer;
+ DATA_BLOB out_output_buffer = data_blob_null;
NTSTATUS status;
NTSTATUS error; /* transport error */
+ bool disconnect = false;
+
+ status = smbd_smb2_ioctl_recv(subreq, req,
+ &out_output_buffer,
+ &disconnect);
+
+ DEBUG(10,("smbd_smb2_request_ioctl_done: smbd_smb2_ioctl_recv returned "
+ "%u status %s\n",
+ (unsigned int)out_output_buffer.length,
+ nt_errstr(status) ));
- status = smbd_smb2_ioctl_recv(subreq, req, &out_output_buffer);
TALLOC_FREE(subreq);
+ if (disconnect) {
+ error = status;
+ smbd_server_connection_terminate(req->sconn,
+ nt_errstr(error));
+ return;
+ }
+
if (NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
/* also ok */
} else if (!NT_STATUS_IS_OK(status)) {
error = smbd_smb2_request_error(req, status);
if (!NT_STATUS_IS_OK(error)) {
- smbd_server_connection_terminate(req->conn,
+ smbd_server_connection_terminate(req->sconn,
nt_errstr(error));
return;
}
out_input_offset = SMB2_HDR_BODY + 0x30;
out_output_offset = SMB2_HDR_BODY + 0x30;
- inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
+ inbody = SMBD_SMB2_IN_BODY_PTR(req);
in_ctl_code = IVAL(inbody, 0x04);
in_file_id_persistent = BVAL(inbody, 0x08);
in_file_id_volatile = BVAL(inbody, 0x10);
- outhdr = (uint8_t *)req->out.vector[i].iov_base;
-
outbody = data_blob_talloc(req->out.vector, NULL, 0x30);
if (outbody.data == NULL) {
error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
if (!NT_STATUS_IS_OK(error)) {
- smbd_server_connection_terminate(req->conn,
+ smbd_server_connection_terminate(req->sconn,
nt_errstr(error));
return;
}
error = smbd_smb2_request_done_ex(req, status, outbody, &outdyn,
__location__);
if (!NT_STATUS_IS_OK(error)) {
- smbd_server_connection_terminate(req->conn,
+ smbd_server_connection_terminate(req->sconn,
nt_errstr(error));
return;
}
}
-struct smbd_smb2_ioctl_state {
- struct smbd_smb2_request *smb2req;
- struct smb_request *smbreq;
- files_struct *fsp;
- DATA_BLOB in_input;
- uint32_t in_max_output;
- DATA_BLOB out_output;
-};
-
-static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq);
-static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq);
-
static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbd_smb2_request *smb2req,
+ struct files_struct *fsp,
uint32_t in_ctl_code,
- uint64_t in_file_id_volatile,
DATA_BLOB in_input,
uint32_t in_max_output,
uint32_t in_flags)
struct tevent_req *req;
struct smbd_smb2_ioctl_state *state;
struct smb_request *smbreq;
- files_struct *fsp = NULL;
- struct tevent_req *subreq;
req = tevent_req_create(mem_ctx, &state,
struct smbd_smb2_ioctl_state);
}
state->smb2req = smb2req;
state->smbreq = NULL;
- state->fsp = NULL;
+ state->fsp = fsp;
state->in_input = in_input;
state->in_max_output = in_max_output;
state->out_output = data_blob_null;
- DEBUG(10,("smbd_smb2_ioctl: file_id[0x%016llX]\n",
- (unsigned long long)in_file_id_volatile));
+ DEBUG(10, ("smbd_smb2_ioctl: ctl_code[0x%08x] %s, %s\n",
+ (unsigned)in_ctl_code,
+ fsp ? fsp_str_dbg(fsp) : "<no handle>",
+ fsp_fnum_dbg(fsp)));
smbreq = smbd_smb2_fake_smb_request(smb2req);
if (tevent_req_nomem(smbreq, req)) {
}
state->smbreq = smbreq;
- if (in_file_id_volatile != UINT64_MAX) {
- fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
- if (fsp == NULL) {
- tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
- return tevent_req_post(req, ev);
- }
- if (smbreq->conn != fsp->conn) {
- tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
- return tevent_req_post(req, ev);
- }
- if (smb2req->session->vuid != fsp->vuid) {
- tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
- return tevent_req_post(req, ev);
- }
- state->fsp = fsp;
- }
-
- switch (in_ctl_code) {
- case 0x00060194: /* FSCTL_DFS_GET_REFERRALS */
- {
- uint16_t in_max_referral_level;
- DATA_BLOB in_file_name_buffer;
- char *in_file_name_string;
- size_t in_file_name_string_size;
- bool ok;
- bool overflow = false;
- NTSTATUS status;
- int dfs_size;
- char *dfs_data = NULL;
-
- if (!IS_IPC(smbreq->conn)) {
- tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
- return tevent_req_post(req, ev);
- }
-
- if (!lp_host_msdfs()) {
- tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
- return tevent_req_post(req, ev);
- }
-
- if (in_input.length < (2 + 2)) {
- tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
- return tevent_req_post(req, ev);
- }
-
- in_max_referral_level = SVAL(in_input.data, 0);
- in_file_name_buffer.data = in_input.data + 2;
- in_file_name_buffer.length = in_input.length - 2;
-
- ok = convert_string_talloc(state, CH_UTF16, CH_UNIX,
- in_file_name_buffer.data,
- in_file_name_buffer.length,
- &in_file_name_string,
- &in_file_name_string_size, false);
- if (!ok) {
- tevent_req_nterror(req, NT_STATUS_ILLEGAL_CHARACTER);
- return tevent_req_post(req, ev);
- }
-
- dfs_size = setup_dfs_referral(smbreq->conn,
- in_file_name_string,
- in_max_referral_level,
- &dfs_data, &status);
- if (dfs_size < 0) {
- tevent_req_nterror(req, status);
- return tevent_req_post(req, ev);
- }
-
- if (dfs_size > in_max_output) {
- /*
- * TODO: we need a testsuite for this
- */
- overflow = true;
- dfs_size = in_max_output;
- }
-
- state->out_output = data_blob_talloc(state,
- (uint8_t *)dfs_data,
- dfs_size);
- SAFE_FREE(dfs_data);
- if (dfs_size > 0 &&
- tevent_req_nomem(state->out_output.data, req)) {
- return tevent_req_post(req, ev);
- }
-
- if (overflow) {
- tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
- } else {
- tevent_req_done(req);
- }
- return tevent_req_post(req, ev);
- }
- case 0x0011C017: /* FSCTL_PIPE_TRANSCEIVE */
-
- if (!IS_IPC(smbreq->conn)) {
- tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
- return tevent_req_post(req, ev);
- }
-
- if (fsp == NULL) {
- tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
- return tevent_req_post(req, ev);
- }
-
- if (!fsp_is_np(fsp)) {
- tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
- return tevent_req_post(req, ev);
- }
-
- subreq = np_write_send(state, ev,
- fsp->fake_file_handle,
- in_input.data,
- in_input.length);
- if (tevent_req_nomem(subreq, req)) {
- return tevent_req_post(req, ev);
- }
- tevent_req_set_callback(subreq,
- smbd_smb2_ioctl_pipe_write_done,
- req);
- return req;
-
+ switch (in_ctl_code & IOCTL_DEV_TYPE_MASK) {
+ case FSCTL_DFS:
+ return smb2_ioctl_dfs(in_ctl_code, ev, req, state);
+ break;
+ case FSCTL_FILESYSTEM:
+ return smb2_ioctl_filesys(in_ctl_code, ev, req, state);
+ break;
+ case FSCTL_NAMED_PIPE:
+ return smb2_ioctl_named_pipe(in_ctl_code, ev, req, state);
+ break;
+ case FSCTL_NETWORK_FILESYSTEM:
+ return smb2_ioctl_network_fs(in_ctl_code, ev, req, state);
+ break;
default:
if (IS_IPC(smbreq->conn)) {
tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
- return tevent_req_post(req, ev);
+ } else {
+ tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
}
- tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
+
return tevent_req_post(req, ev);
+ break;
}
tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
return tevent_req_post(req, ev);
}
-static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq)
-{
- struct tevent_req *req = tevent_req_callback_data(subreq,
- struct tevent_req);
- struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
- struct smbd_smb2_ioctl_state);
- NTSTATUS status;
- ssize_t nwritten = -1;
-
- status = np_write_recv(subreq, &nwritten);
- TALLOC_FREE(subreq);
- if (!NT_STATUS_IS_OK(status)) {
- tevent_req_nterror(req, status);
- return;
- }
-
- if (nwritten != state->in_input.length) {
- tevent_req_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
- return;
- }
-
- state->out_output = data_blob_talloc(state, NULL, state->in_max_output);
- if (state->in_max_output > 0 &&
- tevent_req_nomem(state->out_output.data, req)) {
- return;
- }
-
- subreq = np_read_send(state->smbreq->conn,
- state->smb2req->conn->smb2.event_ctx,
- state->fsp->fake_file_handle,
- state->out_output.data,
- state->out_output.length);
- if (tevent_req_nomem(subreq, req)) {
- return;
- }
- tevent_req_set_callback(subreq, smbd_smb2_ioctl_pipe_read_done, req);
-}
-
-static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq)
-{
- struct tevent_req *req = tevent_req_callback_data(subreq,
- struct tevent_req);
- struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
- struct smbd_smb2_ioctl_state);
- NTSTATUS status;
- ssize_t nread;
- bool is_data_outstanding;
-
- status = np_read_recv(subreq, &nread, &is_data_outstanding);
- TALLOC_FREE(subreq);
- if (!NT_STATUS_IS_OK(status)) {
- tevent_req_nterror(req, status);
- return;
- }
-
- state->out_output.length = nread;
-
- tevent_req_done(req);
-}
-
static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
- DATA_BLOB *out_output)
+ DATA_BLOB *out_output,
+ bool *disconnect)
{
- NTSTATUS status;
+ NTSTATUS status = NT_STATUS_OK;
struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
struct smbd_smb2_ioctl_state);
+ *disconnect = state->disconnect;
+
if (tevent_req_is_nterror(req, &status)) {
if (!NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
tevent_req_received(req);
git.samba.org / mat / samba.git / blobdiff