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https://gitlab.uni-freiburg.de/opensourcevdi/spice
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78c1465ed3
When using config.h, it must be the very first include in all source files since it contains #define that may change the compilation process (eg libc structure layout changes when it's used to enable large file support on 32 bit x86 archs). This commit adds it at the beginning of all .c and .cpp files
95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/*
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Copyright (C) 2011 Red Hat, Inc.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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Red Hat Authors:
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hdegoede@redhat.com
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <string.h>
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#include "red_common.h"
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#include "agent-msg-filter.h"
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void agent_msg_filter_init(struct AgentMsgFilter *filter,
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int copy_paste, int discard_all)
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{
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memset(filter, 0, sizeof(*filter));
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filter->copy_paste_enabled = copy_paste;
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filter->discard_all = discard_all;
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}
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int agent_msg_filter_process_data(struct AgentMsgFilter *filter,
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uint8_t *data, uint32_t len)
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{
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struct VDAgentMessage msg_header;
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if (len > VD_AGENT_MAX_DATA_SIZE) {
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red_printf("invalid agent message: too large");
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return AGENT_MSG_FILTER_PROTO_ERROR;
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}
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/* Are we expecting more data from a previous message? */
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if (filter->msg_data_to_read) {
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data_to_read:
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if (len > filter->msg_data_to_read) {
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red_printf("invalid agent message: data exceeds size from header");
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return AGENT_MSG_FILTER_PROTO_ERROR;
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}
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filter->msg_data_to_read -= len;
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return filter->result;
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}
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if (len < sizeof(msg_header)) {
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red_printf("invalid agent message: incomplete header");
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return AGENT_MSG_FILTER_PROTO_ERROR;
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}
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memcpy(&msg_header, data, sizeof(msg_header));
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len -= sizeof(msg_header);
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if (msg_header.protocol != VD_AGENT_PROTOCOL) {
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red_printf("invalid agent protocol: %u", msg_header.protocol);
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return AGENT_MSG_FILTER_PROTO_ERROR;
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}
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if (filter->discard_all) {
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filter->result = AGENT_MSG_FILTER_DISCARD;
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} else {
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switch (msg_header.type) {
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case VD_AGENT_CLIPBOARD:
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case VD_AGENT_CLIPBOARD_GRAB:
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case VD_AGENT_CLIPBOARD_REQUEST:
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case VD_AGENT_CLIPBOARD_RELEASE:
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if (filter->copy_paste_enabled) {
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filter->result = AGENT_MSG_FILTER_OK;
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} else {
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filter->result = AGENT_MSG_FILTER_DISCARD;
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}
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break;
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default:
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filter->result = AGENT_MSG_FILTER_OK;
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}
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}
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filter->msg_data_to_read = msg_header.size;
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if (filter->msg_data_to_read) {
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goto data_to_read;
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}
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return filter->result;
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}
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