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88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
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Unix SMB/CIFS implementation.
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SMB2 client read call
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Copyright (C) Andrew Tridgell 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "libcli/smb2/smb2.h"
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#include "libcli/smb2/smb2_calls.h"
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/*
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send a read request
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*/
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struct smb2_request *smb2_read_send(struct smb2_tree *tree, struct smb2_read *io)
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{
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struct smb2_request *req;
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req = smb2_request_init_tree(tree, SMB2_OP_READ, 0x30, true, 0);
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if (req == NULL) return NULL;
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SCVAL(req->out.body, 0x02, 0); /* pad */
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SCVAL(req->out.body, 0x03, 0); /* reserved */
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SIVAL(req->out.body, 0x04, io->in.length);
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SBVAL(req->out.body, 0x08, io->in.offset);
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smb2_push_handle(req->out.body+0x10, &io->in.file.handle);
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SIVAL(req->out.body, 0x20, io->in.min_count);
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SIVAL(req->out.body, 0x24, io->in.channel);
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SIVAL(req->out.body, 0x28, io->in.remaining);
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SSVAL(req->out.body, 0x2C, io->in.channel_offset);
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SSVAL(req->out.body, 0x2E, io->in.channel_length);
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smb2_transport_send(req);
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return req;
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}
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/*
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recv a read reply
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*/
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NTSTATUS smb2_read_recv(struct smb2_request *req,
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TALLOC_CTX *mem_ctx, struct smb2_read *io)
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{
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NTSTATUS status;
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if (!smb2_request_receive(req) ||
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!smb2_request_is_ok(req)) {
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return smb2_request_destroy(req);
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}
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SMB2_CHECK_PACKET_RECV(req, 0x10, true);
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status = smb2_pull_o16s32_blob(&req->in, mem_ctx, req->in.body+0x02, &io->out.data);
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if (!NT_STATUS_IS_OK(status)) {
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smb2_request_destroy(req);
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return status;
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}
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io->out.remaining = IVAL(req->in.body, 0x08);
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io->out.reserved = IVAL(req->in.body, 0x0C);
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return smb2_request_destroy(req);
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}
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/*
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sync read request
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*/
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NTSTATUS smb2_read(struct smb2_tree *tree, TALLOC_CTX *mem_ctx, struct smb2_read *io)
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{
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struct smb2_request *req = smb2_read_send(tree, io);
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return smb2_read_recv(req, mem_ctx, io);
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}
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