#include "includes.h"
#include "smbd/globals.h"
-#include "../source4/libcli/smb2/smb2_constants.h"
+#include "../libcli/smb/smb_common.h"
static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
- struct tevent_context *ev,
- struct smbd_smb2_request *smb2req,
- uint8_t in_oplock_level,
- uint32_t in_impersonation_level,
- uint32_t in_desired_access,
- uint32_t in_file_attributes,
- uint32_t in_share_access,
- uint32_t in_create_disposition,
- uint32_t in_create_options,
- const char *in_name);
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req,
+ uint8_t in_oplock_level,
+ uint32_t in_impersonation_level,
+ uint32_t in_desired_access,
+ uint32_t in_file_attributes,
+ uint32_t in_share_access,
+ uint32_t in_create_disposition,
+ uint32_t in_create_options,
+ const char *in_name,
+ struct smb2_create_blobs in_context_blobs);
static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
- uint8_t *out_oplock_level,
- uint32_t *out_create_action,
- NTTIME *out_creation_time,
- NTTIME *out_last_access_time,
- NTTIME *out_last_write_time,
- NTTIME *out_change_time,
- uint64_t *out_allocation_size,
- uint64_t *out_end_of_file,
- uint32_t *out_file_attributes,
- uint64_t *out_file_id_volatile);
+ TALLOC_CTX *mem_ctx,
+ uint8_t *out_oplock_level,
+ uint32_t *out_create_action,
+ NTTIME *out_creation_time,
+ NTTIME *out_last_access_time,
+ NTTIME *out_last_write_time,
+ NTTIME *out_change_time,
+ uint64_t *out_allocation_size,
+ uint64_t *out_end_of_file,
+ uint32_t *out_file_attributes,
+ uint64_t *out_file_id_volatile,
+ struct smb2_create_blobs *out_context_blobs);
static void smbd_smb2_request_create_done(struct tevent_req *subreq);
NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req)
DATA_BLOB in_name_buffer;
char *in_name_string;
size_t in_name_string_size;
+ uint32_t name_offset = 0;
+ uint32_t name_available_length = 0;
+ uint32_t in_context_offset;
+ uint32_t in_context_length;
+ DATA_BLOB in_context_buffer;
+ struct smb2_create_blobs in_context_blobs;
+ uint32_t context_offset = 0;
+ uint32_t context_available_length = 0;
+ uint32_t dyn_offset;
+ NTSTATUS status;
bool ok;
struct tevent_req *subreq;
in_create_options = IVAL(inbody, 0x28);
in_name_offset = SVAL(inbody, 0x2C);
in_name_length = SVAL(inbody, 0x2E);
+ in_context_offset = IVAL(inbody, 0x30);
+ in_context_length = IVAL(inbody, 0x34);
+
+ /*
+ * First check if the dynamic name and context buffers
+ * are correctly specified.
+ *
+ * Note: That we don't check if the name and context buffers
+ * overlap
+ */
+
+ dyn_offset = SMB2_HDR_BODY + (body_size & 0xFFFFFFFE);
if (in_name_offset == 0 && in_name_length == 0) {
/* This is ok */
- } else if (in_name_offset != (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
+ name_offset = 0;
+ } else if (in_name_offset < dyn_offset) {
+ return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ } else {
+ name_offset = in_name_offset - dyn_offset;
+ }
+
+ if (name_offset > req->in.vector[i+2].iov_len) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
- if (in_name_length > req->in.vector[i+2].iov_len) {
+ name_available_length = req->in.vector[i+2].iov_len - name_offset;
+
+ if (in_name_length > name_available_length) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
- in_name_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
+ in_name_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base +
+ name_offset;
in_name_buffer.length = in_name_length;
+ if (in_context_offset == 0 && in_context_length == 0) {
+ /* This is ok */
+ context_offset = 0;
+ } else if (in_context_offset < dyn_offset) {
+ return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ } else {
+ context_offset = in_context_offset - dyn_offset;
+ }
+
+ if (context_offset > req->in.vector[i+2].iov_len) {
+ return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ }
+
+ context_available_length = req->in.vector[i+2].iov_len - context_offset;
+
+ if (in_context_length > context_available_length) {
+ return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ }
+
+ in_context_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base +
+ context_offset;
+ in_context_buffer.length = in_context_length;
+
+ /*
+ * Now interpret the name and context buffers
+ */
+
ok = convert_string_talloc(req, CH_UTF16, CH_UNIX,
in_name_buffer.data,
in_name_buffer.length,
return smbd_smb2_request_error(req, NT_STATUS_ILLEGAL_CHARACTER);
}
+ ZERO_STRUCT(in_context_blobs);
+ status = smb2_create_blob_parse(req, in_context_buffer, &in_context_blobs);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
+ }
+
subreq = smbd_smb2_create_send(req,
- req->conn->smb2.event_ctx,
+ req->sconn->smb2.event_ctx,
req,
in_oplock_level,
in_impersonation_level,
in_share_access,
in_create_disposition,
in_create_options,
- in_name_string);
+ in_name_string,
+ in_context_blobs);
if (subreq == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
tevent_req_set_callback(subreq, smbd_smb2_request_create_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);
}
static void smbd_smb2_request_create_done(struct tevent_req *subreq)
uint64_t out_end_of_file = 0;
uint32_t out_file_attributes = 0;
uint64_t out_file_id_volatile = 0;
+ struct smb2_create_blobs out_context_blobs;
+ DATA_BLOB out_context_buffer;
+ uint16_t out_context_buffer_offset = 0;
NTSTATUS status;
NTSTATUS error; /* transport error */
status = smbd_smb2_create_recv(subreq,
+ req,
&out_oplock_level,
&out_create_action,
&out_creation_time,
&out_allocation_size,
&out_end_of_file,
&out_file_attributes,
- &out_file_id_volatile);
+ &out_file_id_volatile,
+ &out_context_blobs);
TALLOC_FREE(subreq);
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;
}
return;
}
+ status = smb2_create_blob_push(req, &out_context_buffer, out_context_blobs);
+ if (!NT_STATUS_IS_OK(status)) {
+ error = smbd_smb2_request_error(req, status);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(req->sconn,
+ nt_errstr(error));
+ return;
+ }
+ return;
+ }
+
+ if (out_context_buffer.length > 0) {
+ out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
+ }
+
outhdr = (uint8_t *)req->out.vector[i].iov_base;
outbody = data_blob_talloc(req->out.vector, NULL, 0x58);
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;
}
SBVAL(outbody.data, 0x40, 0); /* file id (persistent) */
SBVAL(outbody.data, 0x48,
out_file_id_volatile); /* file id (volatile) */
- SIVAL(outbody.data, 0x50, 0); /* create contexts offset */
- SIVAL(outbody.data, 0x54, 0); /* create contexts length */
+ SIVAL(outbody.data, 0x50,
+ out_context_buffer_offset); /* create contexts offset */
+ SIVAL(outbody.data, 0x54,
+ out_context_buffer.length); /* create contexts length */
- outdyn = data_blob_const(NULL, 0);
+ outdyn = out_context_buffer;
error = smbd_smb2_request_done(req, outbody, &outdyn);
if (!NT_STATUS_IS_OK(error)) {
- smbd_server_connection_terminate(req->conn,
+ smbd_server_connection_terminate(req->sconn,
nt_errstr(error));
return;
}
uint64_t out_end_of_file;
uint32_t out_file_attributes;
uint64_t out_file_id_volatile;
+ struct smb2_create_blobs out_context_blobs;
};
static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
- struct tevent_context *ev,
- struct smbd_smb2_request *smb2req,
- uint8_t in_oplock_level,
- uint32_t in_impersonation_level,
- uint32_t in_desired_access,
- uint32_t in_file_attributes,
- uint32_t in_share_access,
- uint32_t in_create_disposition,
- uint32_t in_create_options,
- const char *in_name)
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req,
+ uint8_t in_oplock_level,
+ uint32_t in_impersonation_level,
+ uint32_t in_desired_access,
+ uint32_t in_file_attributes,
+ uint32_t in_share_access,
+ uint32_t in_create_disposition,
+ uint32_t in_create_options,
+ const char *in_name,
+ struct smb2_create_blobs in_context_blobs)
{
struct tevent_req *req;
struct smbd_smb2_create_state *state;
files_struct *result;
int info;
SMB_STRUCT_STAT sbuf;
+ struct smb2_create_blobs out_context_blobs;
+
+ ZERO_STRUCT(out_context_blobs);
req = tevent_req_create(mem_ctx, &state,
struct smbd_smb2_create_state);
smbreq = smbd_smb2_fake_smb_request(smb2req);
if (tevent_req_nomem(smbreq, req)) {
- goto out;
+ return tevent_req_post(req, ev);
}
if (IS_IPC(smbreq->conn)) {
if (!lp_nt_pipe_support()) {
tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
- goto out;
+ return tevent_req_post(req, ev);
}
/* Strip \\ off the name. */
status = open_np_file(smbreq, pipe_name, &result);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
- goto out;
+ return tevent_req_post(req, ev);
}
info = FILE_WAS_OPENED;
ZERO_STRUCT(sbuf);
status = file_new(smbreq, smbreq->conn, &result);
if(!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
- goto out;
+ return tevent_req_post(req, ev);
}
status = print_fsp_open(smbreq,
if (!NT_STATUS_IS_OK(status)) {
file_free(smbreq, result);
tevent_req_nterror(req, status);
- goto out;
+ return tevent_req_post(req, ev);
}
info = FILE_WAS_CREATED;
} else {
+ char *fname;
struct smb_filename *smb_fname = NULL;
+ struct smb2_create_blob *exta = NULL;
+ struct ea_list *ea_list = NULL;
+ struct smb2_create_blob *mxac = NULL;
+ NTTIME max_access_time = 0;
+ struct smb2_create_blob *secd = NULL;
+ struct security_descriptor *sec_desc = NULL;
+ struct smb2_create_blob *dhnq = NULL;
+ struct smb2_create_blob *dhnc = NULL;
+ struct smb2_create_blob *alsi = NULL;
+ uint64_t allocation_size = 0;
+ struct smb2_create_blob *twrp = NULL;
+ struct smb2_create_blob *qfid = NULL;
+
+ exta = smb2_create_blob_find(&in_context_blobs,
+ SMB2_CREATE_TAG_EXTA);
+ mxac = smb2_create_blob_find(&in_context_blobs,
+ SMB2_CREATE_TAG_MXAC);
+ secd = smb2_create_blob_find(&in_context_blobs,
+ SMB2_CREATE_TAG_SECD);
+ dhnq = smb2_create_blob_find(&in_context_blobs,
+ SMB2_CREATE_TAG_DHNQ);
+ dhnc = smb2_create_blob_find(&in_context_blobs,
+ SMB2_CREATE_TAG_DHNC);
+ alsi = smb2_create_blob_find(&in_context_blobs,
+ SMB2_CREATE_TAG_ALSI);
+ twrp = smb2_create_blob_find(&in_context_blobs,
+ SMB2_CREATE_TAG_TWRP);
+ qfid = smb2_create_blob_find(&in_context_blobs,
+ SMB2_CREATE_TAG_QFID);
+
+ fname = talloc_strdup(state, in_name);
+ if (tevent_req_nomem(fname, req)) {
+ return tevent_req_post(req, ev);
+ }
+
+ if (exta) {
+ if (dhnc) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ ea_list = read_nttrans_ea_list(mem_ctx,
+ (const char *)exta->data.data, exta->data.length);
+ if (!ea_list) {
+ DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+ }
+
+ if (mxac) {
+ if (dhnc) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ if (mxac->data.length == 0) {
+ max_access_time = 0;
+ } else if (mxac->data.length == 8) {
+ max_access_time = BVAL(mxac->data.data, 0);
+ } else {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+ }
+
+ if (secd) {
+ enum ndr_err_code ndr_err;
+
+ if (dhnc) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ sec_desc = talloc_zero(state, struct security_descriptor);
+ if (tevent_req_nomem(sec_desc, req)) {
+ return tevent_req_post(req, ev);
+ }
+
+ ndr_err = ndr_pull_struct_blob(&secd->data,
+ sec_desc, NULL, sec_desc,
+ (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
+ ndr_errstr(ndr_err)));
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+ }
+
+ if (dhnq) {
+ if (dhnc) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ if (dhnq->data.length != 16) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+ /*
+ * we don't support durable handles yet
+ * and have to ignore this
+ */
+ }
+
+ if (dhnc) {
+ if (dhnc->data.length != 16) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+ /* we don't support durable handles yet */
+ tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
+ return tevent_req_post(req, ev);
+ }
+
+ if (alsi) {
+ if (dhnc) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ if (alsi->data.length != 8) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+ allocation_size = BVAL(alsi->data.data, 0);
+ }
+
+ if (twrp) {
+ NTTIME nttime;
+ time_t t;
+ struct tm *tm;
+
+ if (dhnc) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ if (twrp->data.length != 8) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ nttime = BVAL(twrp->data.data, 0);
+ t = nt_time_to_unix(nttime);
+ tm = gmtime(&t);
+
+ TALLOC_FREE(fname);
+ fname = talloc_asprintf(state,
+ "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
+ tm->tm_year + 1900,
+ tm->tm_mon + 1,
+ tm->tm_mday,
+ tm->tm_hour,
+ tm->tm_min,
+ tm->tm_sec,
+ in_name);
+ if (tevent_req_nomem(fname, req)) {
+ return tevent_req_post(req, ev);
+ }
+ }
+
+ if (qfid) {
+ if (qfid->data.length != 0) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+ }
/* these are ignored for SMB2 */
in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
- status = filename_convert(talloc_tos(),
- smbreq->conn,
- smbreq->flags2 & FLAGS2_DFS_PATHNAMES,
- in_name,
- 0,
- NULL,
- &smb_fname);
+ /* convert '\\' into '/' */
+ status = check_path_syntax(fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
+
+ status = filename_convert(req,
+ smbreq->conn,
+ smbreq->flags2 & FLAGS2_DFS_PATHNAMES,
+ fname,
+ 0,
+ NULL,
+ &smb_fname);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
- TALLOC_FREE(smb_fname);
- goto out;
+ return tevent_req_post(req, ev);
}
status = SMB_VFS_CREATE_FILE(smbreq->conn,
in_create_options,
in_file_attributes,
0, /* oplock_request */
- 0, /* allocation_size */
- NULL, /* security_descriptor */
- NULL, /* ea_list */
+ allocation_size,
+ sec_desc,
+ ea_list,
&result,
&info);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
- TALLOC_FREE(smb_fname);
- goto out;
+ return tevent_req_post(req, ev);
}
- sbuf = smb_fname->st;
- TALLOC_FREE(smb_fname);
+
+ if (mxac) {
+ NTTIME last_write_time;
+
+ unix_timespec_to_nt_time(&last_write_time,
+ result->fsp_name->st.st_ex_mtime);
+ if (last_write_time != max_access_time) {
+ uint8_t p[8];
+ uint32_t max_access_granted;
+ DATA_BLOB blob = data_blob_const(p, sizeof(p));
+
+ status = smbd_check_open_rights(smbreq->conn,
+ result->fsp_name,
+ SEC_FLAG_MAXIMUM_ALLOWED,
+ &max_access_granted);
+
+ SIVAL(p, 0, NT_STATUS_V(status));
+ SIVAL(p, 4, max_access_granted);
+
+ status = smb2_create_blob_add(state,
+ &out_context_blobs,
+ SMB2_CREATE_TAG_MXAC,
+ blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
+ }
+ }
+
+ if (qfid) {
+ uint8_t p[32];
+ DATA_BLOB blob = data_blob_const(p, sizeof(p));
+
+ ZERO_STRUCT(p);
+
+ /* TODO: maybe use result->file_id */
+ SIVAL(p, 0, result->fsp_name->st.st_ex_ino);/* FileIndexLow */
+ SIVAL(p, 4, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
+
+ status = smb2_create_blob_add(state, &out_context_blobs,
+ SMB2_CREATE_TAG_QFID,
+ blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
+ }
+
+ sbuf = result->fsp_name->st;
}
smb2req->compat_chain_fsp = smbreq->chain_fsp;
state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
}
state->out_file_id_volatile = result->fnum;
+ state->out_context_blobs = out_context_blobs;
tevent_req_done(req);
- out:
return tevent_req_post(req, ev);
}
static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
- uint8_t *out_oplock_level,
- uint32_t *out_create_action,
- NTTIME *out_creation_time,
- NTTIME *out_last_access_time,
- NTTIME *out_last_write_time,
- NTTIME *out_change_time,
- uint64_t *out_allocation_size,
- uint64_t *out_end_of_file,
- uint32_t *out_file_attributes,
- uint64_t *out_file_id_volatile)
+ TALLOC_CTX *mem_ctx,
+ uint8_t *out_oplock_level,
+ uint32_t *out_create_action,
+ NTTIME *out_creation_time,
+ NTTIME *out_last_access_time,
+ NTTIME *out_last_write_time,
+ NTTIME *out_change_time,
+ uint64_t *out_allocation_size,
+ uint64_t *out_end_of_file,
+ uint32_t *out_file_attributes,
+ uint64_t *out_file_id_volatile,
+ struct smb2_create_blobs *out_context_blobs)
{
NTSTATUS status;
struct smbd_smb2_create_state *state = tevent_req_data(req,
*out_end_of_file = state->out_end_of_file;
*out_file_attributes = state->out_file_attributes;
*out_file_id_volatile = state->out_file_id_volatile;
+ *out_context_blobs = state->out_context_blobs;
+
+ talloc_steal(mem_ctx, state->out_context_blobs.blobs);
tevent_req_received(req);
return NT_STATUS_OK;
git.samba.org / samba.git / blobdiff