diff options
Diffstat (limited to 'source4/smb_server/search.c')
-rw-r--r-- | source4/smb_server/search.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/source4/smb_server/search.c b/source4/smb_server/search.c new file mode 100644 index 0000000000..9d01a0e98f --- /dev/null +++ b/source4/smb_server/search.c @@ -0,0 +1,229 @@ +/* + Unix SMB/CIFS implementation. + SMBsearch handling + Copyright (C) Andrew Tridgell 2003 + Copyright (C) James J Myers 2003 <myersjj@samba.org> + + 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 2 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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ +/* + This file handles the parsing of transact2 requests +*/ + +#include "includes.h" + +/* check req->async.status and if not OK then send an error reply */ +#define CHECK_ASYNC_STATUS do { \ + if (!NT_STATUS_IS_OK(req->async.status)) { \ + req_reply_error(req, req->async.status); \ + return; \ + }} while (0) + +/* + check if the backend wants to handle the request asynchronously. + if it wants it handled synchronously then call the send function + immediately +*/ +#define REQ_ASYNC_TAIL do { \ + if (!(req->control_flags & REQ_CONTROL_ASYNC)) { \ + req->async.send_fn(req); \ + }} while (0) + +/* useful wrapper for talloc with NO_MEMORY reply */ +#define REQ_TALLOC(ptr, size) do { \ + ptr = talloc(req->mem_ctx, size); \ + if (!ptr) { \ + req_reply_error(req, NT_STATUS_NO_MEMORY); \ + return; \ + }} while (0) + +#define CHECK_MIN_BLOB_SIZE(blob, size) do { \ + if ((blob)->length < (size)) { \ + return NT_STATUS_INFO_LENGTH_MISMATCH; \ + }} while (0) + +/* a structure to encapsulate the state information about + * an in-progress search first/next operation */ +struct search_state { + struct request_context *req; + union smb_search_data *file; + uint16 last_entry_offset; +}; + +/* + fill a single entry in a search find reply +*/ +static void find_fill_info(struct request_context *req, + union smb_search_data *file) +{ + char *p = req->out.data + req->out.data_size; + uint32 dos_date; + char search_name[13]; + + DEBUG(9,("find_fill_info: input file data: attr=0x%x size=%u time=0x%x name=%13s\n", + file->search.attrib, file->search.size, + (uint32)file->search.write_time, file->search.name)); + + p += req_append_bytes(req, file->search.search_id.data, 21); + p += req_append_bytes(req, (char*)&file->search.attrib, 1); + put_dos_date((char*)&dos_date, 0, file->search.write_time); + p += req_append_bytes(req, (char*)&dos_date, 4); + p += req_append_bytes(req, (char*)&file->search.size, 4); + memset(&search_name[0], ' ', 13); + memcpy(&search_name[0], file->search.name, + MAX(13, strlen(file->search.name))); + p += req_append_bytes(req, &search_name[0], 13); +} + +/* callback function for search first/next */ +static BOOL find_callback(void *private, union smb_search_data *file) +{ + struct search_state *state = (struct search_state *)private; + + find_fill_info(state->req, file); + + return True; +} + +/**************************************************************************** + Reply to a search. +****************************************************************************/ +void reply_search(struct request_context *req) +{ + union smb_search_first *sf; + union smb_search_next *sn; + DATA_BLOB resume_key; + uint16 resume_key_length; + struct search_state state; + char *p; + + REQ_TALLOC(sf, sizeof(*sf)); + + /* parse request */ + if (req->in.wct != 2) { + req_reply_error(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + p = req->in.data; + p += req_pull_ascii4(req, &sf->search_first.in.pattern, + p, STR_TERMINATE); + if (!sf->search_first.in.pattern) { + req_reply_error(req, NT_STATUS_OBJECT_NAME_NOT_FOUND); + return; + } + /* pull in type 5 byte and length */ + if (!req_pull_blob(req, p, 3, &resume_key)) + req_reply_error(req, NT_STATUS_INVALID_PARAMETER); + resume_key_length = SVAL(resume_key.data, 1); + p += 3; + DEBUG(19,("reply_search: pattern=%s, key_length=%d\n", + sf->search_first.in.pattern, resume_key_length)); + + /* setup state for callback */ + state.req = req; + state.file = NULL; + state.last_entry_offset = 0; + + /* construct reply */ + req_setup_reply(req, 1, 0); + req_append_var_block(req, NULL, 0); + + if (resume_key_length > 0) { + /* do a search next operation */ + REQ_TALLOC(sn, sizeof(*sn)); + sn->search_next.level = RAW_SEARCH_SEARCH; + req->async.private = sn; + if (!req_pull_blob(req, req->in.data, resume_key_length, + &(sn->search_next.in.search_id))) + req_reply_error(req, NT_STATUS_INVALID_PARAMETER); + sn->search_next.in.search_attrib = SVAL(req->in.vwv, VWV(1)); + sn->search_next.in.max_count = SVAL(req->in.vwv, VWV(0)); + + /* call backend */ + req->async.status = req->conn->ntvfs_ops->search_next(req, + sn, &state, find_callback); + SSVAL(req->out.vwv, VWV(0), sn->search_next.out.count); + } else { + /* do a search first operation */ + req->async.private = sf; + sf->search_first.level = RAW_SEARCH_SEARCH; + sf->search_first.in.search_attrib = SVAL(req->in.vwv, VWV(1)); + sf->search_first.in.max_count = SVAL(req->in.vwv, VWV(0)); + + /* call backend */ + req->async.status = req->conn->ntvfs_ops->search_first(req, + sf, &state, find_callback); + SSVAL(req->out.vwv, VWV(0), sf->search_first.out.count); + } + + req_send_reply(req); +} + + +/**************************************************************************** + Reply to a fclose (async reply) +****************************************************************************/ +static void reply_fclose_send(struct request_context *req) +{ + CHECK_ASYNC_STATUS; + + /* construct reply */ + req_setup_reply(req, 1, 0); + + req_send_reply(req); +} + + +/**************************************************************************** + Reply to fclose (stop directory search). +****************************************************************************/ +void reply_fclose(struct request_context *req) +{ + union smb_search_next *sn; + DATA_BLOB resume_key; + uint16 resume_key_length; + + REQ_TALLOC(sn, sizeof(*sn)); + + /* parse request */ + if (req->in.wct != 2) { + req_reply_error(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + sn->search_next.level = RAW_SEARCH_FCLOSE; + + /* pull in type 5 byte and length */ + if (!req_pull_blob(req, req->in.data, 3, &resume_key)) + req_reply_error(req, NT_STATUS_INVALID_PARAMETER); + resume_key_length = SVAL(resume_key.data, 1); + if (resume_key_length > 0) { + /* do a search close operation */ + if (!req_pull_blob(req, req->in.data, resume_key_length, + &(sn->search_next.in.search_id))) + req_reply_error(req, NT_STATUS_INVALID_PARAMETER); + } else + req_reply_error(req, NT_STATUS_INVALID_PARAMETER); + + req->async.send_fn = reply_fclose_send; + req->async.private = sn; + + /* call backend */ + req->async.status = req->conn->ntvfs_ops->search_next(req, sn, + NULL, NULL); + + REQ_ASYNC_TAIL; +} |