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- /*
- * QEMU VNC display driver: Websockets support
- *
- * Copyright (C) 2010 Joel Martin
- * Copyright (C) 2012 Tim Hardeck
- *
- * This 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 software 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 software; if not, see <http://www.gnu.org/licenses/>.
- */
- #ifndef __QEMU_UI_VNC_WS_H
- #define __QEMU_UI_VNC_WS_H
- #include <gnutls/gnutls.h>
- #define B64LEN(__x) (((__x + 2) / 3) * 12 / 3)
- #define SHA1_DIGEST_LEN 20
- #define WS_ACCEPT_LEN (B64LEN(SHA1_DIGEST_LEN) + 1)
- #define WS_CLIENT_KEY_LEN 24
- #define WS_GUID "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
- #define WS_GUID_LEN strlen(WS_GUID)
- #define WS_HANDSHAKE "HTTP/1.1 101 Switching Protocols\r\n\
- Upgrade: websocket\r\n\
- Connection: Upgrade\r\n\
- Sec-WebSocket-Accept: %s\r\n\
- Sec-WebSocket-Protocol: binary\r\n\
- \r\n"
- #define WS_HANDSHAKE_DELIM "\r\n"
- #define WS_HANDSHAKE_END "\r\n\r\n"
- #define WS_SUPPORTED_VERSION "13"
- #define WS_HEAD_MIN_LEN sizeof(uint16_t)
- #define WS_HEAD_MAX_LEN (WS_HEAD_MIN_LEN + sizeof(uint64_t) + sizeof(uint32_t))
- typedef union WsMask {
- char c[4];
- uint32_t u;
- } WsMask;
- typedef struct QEMU_PACKED WsHeader {
- unsigned char b0;
- unsigned char b1;
- union {
- struct QEMU_PACKED {
- uint16_t l16;
- WsMask m16;
- } s16;
- struct QEMU_PACKED {
- uint64_t l64;
- WsMask m64;
- } s64;
- WsMask m;
- } u;
- } WsHeader;
- enum {
- WS_OPCODE_CONTINUATION = 0x0,
- WS_OPCODE_TEXT_FRAME = 0x1,
- WS_OPCODE_BINARY_FRAME = 0x2,
- WS_OPCODE_CLOSE = 0x8,
- WS_OPCODE_PING = 0x9,
- WS_OPCODE_PONG = 0xA
- };
- #ifdef CONFIG_VNC_TLS
- void vncws_tls_handshake_peek(void *opaque);
- #endif /* CONFIG_VNC_TLS */
- void vncws_handshake_read(void *opaque);
- long vnc_client_write_ws(VncState *vs);
- long vnc_client_read_ws(VncState *vs);
- void vncws_process_handshake(VncState *vs, uint8_t *line, size_t size);
- void vncws_encode_frame(Buffer *output, const void *payload,
- const size_t payload_size);
- int vncws_decode_frame(Buffer *input, uint8_t **payload,
- size_t *payload_size, size_t *frame_size);
- #endif /* __QEMU_UI_VNC_WS_H */
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