diff options
Diffstat (limited to 'source4/smb_server/smb2/find.c')
| -rw-r--r-- | source4/smb_server/smb2/find.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/source4/smb_server/smb2/find.c b/source4/smb_server/smb2/find.c new file mode 100644 index 0000000..17f09e1 --- /dev/null +++ b/source4/smb_server/smb2/find.c @@ -0,0 +1,167 @@ +/* + Unix SMB/CIFS implementation. + SMB2 Find + Copyright (C) Andrew Tridgell 2003 + Copyright (c) Stefan Metzmacher 2006 + + This program 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. + + This program 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/>. +*/ +/* + This file handles the parsing of transact2 requests +*/ + +#include "includes.h" +#include "libcli/smb2/smb2.h" +#include "libcli/smb2/smb2_calls.h" +#include "smb_server/smb_server.h" +#include "smb_server/smb2/smb2_server.h" +#include "ntvfs/ntvfs.h" + + +/* a structure to encapsulate the state information about an in-progress ffirst/fnext operation */ +struct smb2srv_find_state { + struct smb2srv_request *req; + struct smb2_find *info; + union smb_search_first *ff; + union smb_search_next *fn; + uint32_t last_entry_offset; +}; + +/* callback function for SMB2 Find */ +static bool smb2srv_find_callback(void *private_data, const union smb_search_data *file) +{ + struct smb2srv_find_state *state = talloc_get_type(private_data, struct smb2srv_find_state); + struct smb2_find *info = state->info; + uint32_t old_length; + NTSTATUS status; + + old_length = info->out.blob.length; + + status = smbsrv_push_passthru_search(state, &info->out.blob, info->data_level, file, STR_UNICODE); + if (!NT_STATUS_IS_OK(status) || + info->out.blob.length > info->in.max_response_size) { + /* restore the old length and tell the backend to stop */ + smbsrv_blob_grow_data(state, &info->out.blob, old_length); + return false; + } + + state->last_entry_offset = old_length; + + return true; +} + +static void smb2srv_find_send(struct ntvfs_request *ntvfs) +{ + struct smb2srv_request *req; + struct smb2srv_find_state *state; + + SMB2SRV_CHECK_ASYNC_STATUS(state, struct smb2srv_find_state); + SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x08, true, state->info->out.blob.length)); + + if (state->info->out.blob.length > 0) { + SIVAL(state->info->out.blob.data + state->last_entry_offset, 0, 0); + } + + SMB2SRV_CHECK(smb2_push_o16s32_blob(&req->out, 0x02, state->info->out.blob)); + + smb2srv_send_reply(req); +} + +static NTSTATUS smb2srv_find_backend(struct smb2srv_find_state *state) +{ + struct smb2_find *info = state->info; + + switch (info->in.level) { + case SMB2_FIND_DIRECTORY_INFO: + info->data_level = RAW_SEARCH_DATA_DIRECTORY_INFO; + break; + + case SMB2_FIND_FULL_DIRECTORY_INFO: + info->data_level = RAW_SEARCH_DATA_FULL_DIRECTORY_INFO; + break; + + case SMB2_FIND_BOTH_DIRECTORY_INFO: + info->data_level = RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO; + break; + + case SMB2_FIND_NAME_INFO: + info->data_level = RAW_SEARCH_DATA_NAME_INFO; + break; + + case SMB2_FIND_ID_BOTH_DIRECTORY_INFO: + info->data_level = RAW_SEARCH_DATA_ID_BOTH_DIRECTORY_INFO; + break; + + case SMB2_FIND_ID_FULL_DIRECTORY_INFO: + info->data_level = RAW_SEARCH_DATA_ID_FULL_DIRECTORY_INFO; + break; + + default: + return NT_STATUS_FOOBAR; + } + + if (info->in.continue_flags & SMB2_CONTINUE_FLAG_REOPEN) { + state->ff = talloc(state, union smb_search_first); + NT_STATUS_HAVE_NO_MEMORY(state->ff); + + state->ff->smb2 = *info; + state->info = &state->ff->smb2; + ZERO_STRUCT(state->ff->smb2.out); + + return ntvfs_search_first(state->req->ntvfs, state->ff, state, smb2srv_find_callback); + } else { + state->fn = talloc(state, union smb_search_next); + NT_STATUS_HAVE_NO_MEMORY(state->fn); + + state->fn->smb2 = *info; + state->info = &state->fn->smb2; + ZERO_STRUCT(state->fn->smb2.out); + + return ntvfs_search_next(state->req->ntvfs, state->fn, state, smb2srv_find_callback); + } +} + +void smb2srv_find_recv(struct smb2srv_request *req) +{ + struct smb2srv_find_state *state; + struct smb2_find *info; + + SMB2SRV_CHECK_BODY_SIZE(req, 0x20, true); + SMB2SRV_TALLOC_IO_PTR(info, struct smb2_find); + /* this overwrites req->io_ptr !*/ + SMB2SRV_TALLOC_IO_PTR(state, struct smb2srv_find_state); + state->req = req; + state->info = info; + state->ff = NULL; + state->fn = NULL; + state->last_entry_offset= 0; + SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_find_send, NTVFS_ASYNC_STATE_MAY_ASYNC); + + info->level = RAW_SEARCH_SMB2; + info->data_level = RAW_SEARCH_DATA_GENERIC;/* will be overwritten later */ + info->in.level = CVAL(req->in.body, 0x02); + info->in.continue_flags = CVAL(req->in.body, 0x03); + info->in.file_index = IVAL(req->in.body, 0x04); + info->in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x08); + SMB2SRV_CHECK(smb2_pull_o16s16_string(&req->in, info, req->in.body+0x18, &info->in.pattern)); + info->in.max_response_size = IVAL(req->in.body, 0x1C); + + /* the VFS backend does not yet handle NULL patterns */ + if (info->in.pattern == NULL) { + info->in.pattern = ""; + } + + SMB2SRV_CHECK_FILE_HANDLE(info->in.file.ntvfs); + SMB2SRV_CALL_NTVFS_BACKEND(smb2srv_find_backend(state)); +} |