s3:smbd: convert '\\' into '/' in SMB2 Create
[ira/wip.git] / source3 / smbd / smb2_create.c
index 0f955a4df8ef43c85781a371f263f7f5a5394cdc..1517ab8b3515290ed5b3b17d5ed726f35da37ae3 100644 (file)
 #include "smbd/globals.h"
 #include "../source4/libcli/smb2/smb2_constants.h"
 
-static NTSTATUS smbd_smb2_create(struct smbd_smb2_request *req,
-                                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,
-                                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);
+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);
+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);
 
+static void smbd_smb2_request_create_done(struct tevent_req *subreq);
 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req)
 {
        const uint8_t *inbody;
        int i = req->current_idx;
-       uint8_t *outhdr;
-       DATA_BLOB outbody;
-       DATA_BLOB outdyn;
        size_t expected_body_size = 0x39;
        size_t body_size;
        uint8_t in_oplock_level;
@@ -63,18 +64,8 @@ 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;
-       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;
-       NTSTATUS status;
        bool ok;
+       struct tevent_req *subreq;
 
        if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
                return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
@@ -97,7 +88,9 @@ NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req)
        in_name_offset          = SVAL(inbody, 0x2C);
        in_name_length          = SVAL(inbody, 0x2E);
 
-       if (in_name_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))) {
                return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
        }
 
@@ -117,34 +110,83 @@ NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req)
                return smbd_smb2_request_error(req, NT_STATUS_ILLEGAL_CHARACTER);
        }
 
-       status = smbd_smb2_create(req,
-                                 in_oplock_level,
-                                 in_impersonation_level,
-                                 in_desired_access,
-                                 in_file_attributes,
-                                 in_share_access,
-                                 in_create_disposition,
-                                 in_create_options,
-                                 in_name_string,
-                                 &out_oplock_level,
-                                 &out_create_action,
-                                 &out_creation_time,
-                                 &out_last_access_time,
-                                 &out_last_write_time,
-                                 &out_change_time,
-                                 &out_allocation_size,
-                                 &out_end_of_file,
-                                 &out_file_attributes,
-                                 &out_file_id_volatile);
+       subreq = smbd_smb2_create_send(req,
+                                      req->sconn->smb2.event_ctx,
+                                      req,
+                                      in_oplock_level,
+                                      in_impersonation_level,
+                                      in_desired_access,
+                                      in_file_attributes,
+                                      in_share_access,
+                                      in_create_disposition,
+                                      in_create_options,
+                                      in_name_string);
+       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;
+}
+
+static void smbd_smb2_request_create_done(struct tevent_req *subreq)
+{
+       struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
+                                       struct smbd_smb2_request);
+       int i = req->current_idx;
+       uint8_t *outhdr;
+       DATA_BLOB outbody;
+       DATA_BLOB outdyn;
+       uint8_t out_oplock_level = 0;
+       uint32_t out_create_action = 0;
+       NTTIME out_creation_time = 0;
+       NTTIME out_last_access_time = 0;
+       NTTIME out_last_write_time = 0;
+       NTTIME out_change_time = 0;
+       uint64_t out_allocation_size = 0;
+       uint64_t out_end_of_file = 0;
+       uint32_t out_file_attributes = 0;
+       uint64_t out_file_id_volatile = 0;
+       NTSTATUS status;
+       NTSTATUS error; /* transport error */
+
+       status = smbd_smb2_create_recv(subreq,
+                                      &out_oplock_level,
+                                      &out_create_action,
+                                      &out_creation_time,
+                                      &out_last_access_time,
+                                      &out_last_write_time,
+                                      &out_change_time,
+                                      &out_allocation_size,
+                                      &out_end_of_file,
+                                      &out_file_attributes,
+                                      &out_file_id_volatile);
+       TALLOC_FREE(subreq);
        if (!NT_STATUS_IS_OK(status)) {
-               return smbd_smb2_request_error(req, 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;
        }
 
        outhdr = (uint8_t *)req->out.vector[i].iov_base;
 
        outbody = data_blob_talloc(req->out.vector, NULL, 0x58);
        if (outbody.data == NULL) {
-               return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+               error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+               if (!NT_STATUS_IS_OK(error)) {
+                       smbd_server_connection_terminate(req->sconn,
+                                                        nt_errstr(error));
+                       return;
+               }
+               return;
        }
 
        SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
@@ -176,103 +218,213 @@ NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req)
 
        outdyn = data_blob_const(NULL, 0);
 
-       return smbd_smb2_request_done(req, outbody, &outdyn);
+       error = smbd_smb2_request_done(req, outbody, &outdyn);
+       if (!NT_STATUS_IS_OK(error)) {
+               smbd_server_connection_terminate(req->sconn,
+                                                nt_errstr(error));
+               return;
+       }
 }
 
-static NTSTATUS smbd_smb2_create(struct smbd_smb2_request *req,
-                                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,
-                                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 smbd_smb2_create_state {
+       struct smbd_smb2_request *smb2req;
+       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;
+};
+
+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_req *req;
+       struct smbd_smb2_create_state *state;
        NTSTATUS status;
        struct smb_request *smbreq;
        files_struct *result;
        int info;
        SMB_STRUCT_STAT sbuf;
 
+       req = tevent_req_create(mem_ctx, &state,
+                               struct smbd_smb2_create_state);
+       if (req == NULL) {
+               return NULL;
+       }
+       state->smb2req = smb2req;
+
        DEBUG(10,("smbd_smb2_create: name[%s]\n",
                  in_name));
 
-       smbreq = smbd_smb2_fake_smb_request(req);
-       if (smbreq == NULL) {
-               return NT_STATUS_NO_MEMORY;
+       smbreq = smbd_smb2_fake_smb_request(smb2req);
+       if (tevent_req_nomem(smbreq, req)) {
+               goto out;
        }
 
-       /* If it's an IPC, pass off the pipe handler. */
-       if (IS_IPC(req->tcon->compat_conn)) {
-               return NT_STATUS_NOT_IMPLEMENTED;
-       }
+       if (IS_IPC(smbreq->conn)) {
+               const char *pipe_name = in_name;
 
-       if (CAN_PRINT(req->tcon->compat_conn)) {
-               return NT_STATUS_NOT_IMPLEMENTED;
-       }
+               if (!lp_nt_pipe_support()) {
+                       tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+                       goto out;
+               }
 
-       switch (in_oplock_level) {
-       case SMB2_OPLOCK_LEVEL_BATCH:
-               break;
-       case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
-               break;
-       default:
-               break;
-       }
+               /* Strip \\ off the name. */
+               if (pipe_name[0] == '\\') {
+                       pipe_name++;
+               }
 
-       /* these are ignored for SMB2 */
-       in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
-       in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
-
-       status = SMB_VFS_CREATE_FILE(req->tcon->compat_conn,
-                                    smbreq,
-                                    0, /* root_dir_fid */
-                                    in_name,
-                                    CFF_DOS_PATH, /* create_file_flags */
-                                    in_desired_access,
-                                    in_share_access,
-                                    in_create_disposition,
-                                    in_create_options,
-                                    in_file_attributes,
-                                    0, /* oplock_request */
-                                    0, /* allocation_size */
-                                    NULL, /* security_descriptor */
-                                    NULL, /* ea_list */
-                                    &result,
-                                    &info,
-                                    &sbuf);
-       if (!NT_STATUS_IS_OK(status)) {
-               return status;
+               status = open_np_file(smbreq, pipe_name, &result);
+               if (!NT_STATUS_IS_OK(status)) {
+                       tevent_req_nterror(req, status);
+                       goto out;
+               }
+               info = FILE_WAS_OPENED;
+               ZERO_STRUCT(sbuf);
+       } else if (CAN_PRINT(smbreq->conn)) {
+               status = file_new(smbreq, smbreq->conn, &result);
+               if(!NT_STATUS_IS_OK(status)) {
+                       tevent_req_nterror(req, status);
+                       goto out;
+               }
+
+               status = print_fsp_open(smbreq,
+                                       smbreq->conn,
+                                       in_name,
+                                       smbreq->vuid,
+                                       result,
+                                       &sbuf);
+               if (!NT_STATUS_IS_OK(status)) {
+                       file_free(smbreq, result);
+                       tevent_req_nterror(req, status);
+                       goto out;
+               }
+               info = FILE_WAS_CREATED;
+       } else {
+               struct smb_filename *smb_fname = NULL;
+
+               /* these are ignored for SMB2 */
+               in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
+               in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
+
+               /* convert '\\' into '/' */
+               status = check_path_syntax(in_name);
+               if (!NT_STATUS_IS_OK(status)) {
+                       tevent_req_nterror(req, status);
+                       TALLOC_FREE(smb_fname);
+                       goto out;
+               }
+
+               status = filename_convert(talloc_tos(),
+                                       smbreq->conn,
+                                       smbreq->flags2 & FLAGS2_DFS_PATHNAMES,
+                                       in_name,
+                                       0,
+                                       NULL,
+                                       &smb_fname);
+               if (!NT_STATUS_IS_OK(status)) {
+                       tevent_req_nterror(req, status);
+                       TALLOC_FREE(smb_fname);
+                       goto out;
+               }
+
+               status = SMB_VFS_CREATE_FILE(smbreq->conn,
+                                            smbreq,
+                                            0, /* root_dir_fid */
+                                            smb_fname,
+                                            in_desired_access,
+                                            in_share_access,
+                                            in_create_disposition,
+                                            in_create_options,
+                                            in_file_attributes,
+                                            0, /* oplock_request */
+                                            0, /* allocation_size */
+                                            NULL, /* security_descriptor */
+                                            NULL, /* ea_list */
+                                            &result,
+                                            &info);
+               if (!NT_STATUS_IS_OK(status)) {
+                       tevent_req_nterror(req, status);
+                       TALLOC_FREE(smb_fname);
+                       goto out;
+               }
+               sbuf = smb_fname->st;
+               TALLOC_FREE(smb_fname);
        }
 
-       *out_oplock_level       = 0;
+       smb2req->compat_chain_fsp = smbreq->chain_fsp;
+
+       state->out_oplock_level = 0;
        if ((in_create_disposition == FILE_SUPERSEDE)
            && (info == FILE_WAS_OVERWRITTEN)) {
-               *out_create_action = FILE_WAS_SUPERSEDED;
+               state->out_create_action = FILE_WAS_SUPERSEDED;
        } else {
-               *out_create_action = info;
+               state->out_create_action = info;
        }
-       unix_timespec_to_nt_time(out_creation_time, sbuf.st_ex_btime);
-       unix_timespec_to_nt_time(out_last_access_time, sbuf.st_ex_atime);
-       unix_timespec_to_nt_time(out_last_write_time,sbuf.st_ex_mtime);
-       unix_timespec_to_nt_time(out_change_time, sbuf.st_ex_ctime);
-       *out_allocation_size    = sbuf.st_ex_blksize * sbuf.st_ex_blocks;
-       *out_end_of_file        = sbuf.st_ex_size;
-       *out_file_attributes    = dos_mode(result->conn,result->fsp_name,&sbuf);
-       if (*out_file_attributes == 0) {
-               *out_file_attributes = FILE_ATTRIBUTE_NORMAL;
+       unix_timespec_to_nt_time(&state->out_creation_time, sbuf.st_ex_btime);
+       unix_timespec_to_nt_time(&state->out_last_access_time, sbuf.st_ex_atime);
+       unix_timespec_to_nt_time(&state->out_last_write_time,sbuf.st_ex_mtime);
+       unix_timespec_to_nt_time(&state->out_change_time, sbuf.st_ex_ctime);
+       state->out_allocation_size      = sbuf.st_ex_blksize * sbuf.st_ex_blocks;
+       state->out_end_of_file          = sbuf.st_ex_size;
+       state->out_file_attributes      = dos_mode(result->conn,
+                                                  result->fsp_name);
+       if (state->out_file_attributes == 0) {
+               state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
+       }
+       state->out_file_id_volatile = result->fnum;
+
+       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)
+{
+       NTSTATUS status;
+       struct smbd_smb2_create_state *state = tevent_req_data(req,
+                                              struct smbd_smb2_create_state);
+
+       if (tevent_req_is_nterror(req, &status)) {
+               tevent_req_received(req);
+               return status;
        }
-       *out_file_id_volatile = result->fnum;
+
+       *out_oplock_level       = state->out_oplock_level;
+       *out_create_action      = state->out_create_action;
+       *out_creation_time      = state->out_creation_time;
+       *out_last_access_time   = state->out_last_access_time;
+       *out_last_write_time    = state->out_last_write_time;
+       *out_change_time        = state->out_change_time;
+       *out_allocation_size    = state->out_allocation_size;
+       *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;
+
+       tevent_req_received(req);
        return NT_STATUS_OK;
 }