summaryrefslogtreecommitdiffstats
path: root/source4/smb_server/smb2/find.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
commit8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch)
tree4099e8021376c7d8c05bdf8503093d80e9c7bad0 /source4/smb_server/smb2/find.c
parentInitial commit. (diff)
downloadsamba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz
samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'source4/smb_server/smb2/find.c')
-rw-r--r--source4/smb_server/smb2/find.c167
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));
+}