124 lines
3.3 KiB
C
124 lines
3.3 KiB
C
#ifndef _RFB_PROTO_H
|
|
#define _RFB_PROTO_H
|
|
|
|
#define RFB_VERSION_MESSAGE "RFB 003.008\n"
|
|
|
|
#include <stdint.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <arpa/inet.h>
|
|
|
|
#define RFB_PACKED __attribute__((packed))
|
|
|
|
int send_to_client(void *client, const void *payload, size_t size);
|
|
int receive_from_client(void *client, void *result, size_t size);
|
|
|
|
enum rfb_security_type : uint8_t {
|
|
RFB_SECURITY_TYPE_INVALID = 0,
|
|
RFB_SECURITY_TYPE_NONE = 1,
|
|
RFB_SECURITY_TYPE_VNC_AUTH = 2,
|
|
};
|
|
|
|
enum rfb_security_handshake_result : uint32_t {
|
|
RFB_SECURITY_HANDSHAKE_OK = 0,
|
|
RFB_SECURITY_HANDSHAKE_FAILED = 1,
|
|
};
|
|
|
|
enum rfb_client_to_server_msg_type : uint8_t {
|
|
RFB_CLIENT_TO_SERVER_SET_PIXEL_FORMAT = 0,
|
|
RFB_CLIENT_TO_SERVER_SET_ENCODINGS = 2,
|
|
RFB_CLIENT_TO_SERVER_FRAMEBUFFER_UPDATE_REQUEST = 3,
|
|
RFB_CLIENT_TO_SERVER_KEY_EVENT = 4,
|
|
RFB_CLIENT_TO_SERVER_POINTER_EVENT = 5,
|
|
RFB_CLIENT_TO_SERVER_CLIENT_CUT_TEXT = 6,
|
|
};
|
|
|
|
struct rfb_security_types_msg {
|
|
uint8_t n;
|
|
enum rfb_security_type types[1];
|
|
} RFB_PACKED;
|
|
|
|
struct rfb_error_reason {
|
|
uint32_t length;
|
|
char message[0];
|
|
} RFB_PACKED;
|
|
|
|
struct rfb_pixel_format {
|
|
uint8_t bits_per_pixel;
|
|
uint8_t depth;
|
|
uint8_t big_endian_flag;
|
|
uint8_t true_colour_flag;
|
|
uint16_t red_max;
|
|
uint16_t green_max;
|
|
uint16_t blue_max;
|
|
uint8_t red_shift;
|
|
uint8_t green_shift;
|
|
uint8_t blue_shift;
|
|
uint8_t padding[3];
|
|
} RFB_PACKED;
|
|
|
|
struct rfb_server_init_msg {
|
|
uint16_t width;
|
|
uint16_t height;
|
|
struct rfb_pixel_format pixel_format;
|
|
uint32_t name_length;
|
|
char name_string[0];
|
|
} RFB_PACKED;
|
|
|
|
static inline int rfb_send_security_types(void *client)
|
|
{
|
|
struct rfb_security_types_msg payload = {
|
|
.n = 1,
|
|
.types = {
|
|
RFB_SECURITY_TYPE_NONE,
|
|
},
|
|
};
|
|
|
|
return send_to_client(client, &payload, sizeof(payload));
|
|
}
|
|
|
|
static inline int
|
|
rfb_receive_security_type(void *client, enum rfb_security_type *type)
|
|
{
|
|
return receive_from_client(client, type, sizeof(*type));
|
|
}
|
|
|
|
static inline int
|
|
rfb_send_security_result(void *client,
|
|
enum rfb_security_handshake_result result)
|
|
{
|
|
uint32_t payload = htonl(result);
|
|
return send_to_client(client, &payload, sizeof(payload));
|
|
}
|
|
|
|
static inline int rfb_send_error_reason(void *client, const char *message)
|
|
{
|
|
char buffer[256];
|
|
struct rfb_error_reason *payload = (struct rfb_error_reason*)buffer;
|
|
size_t length = strlen(message);
|
|
payload->length = htonl(length);
|
|
strncpy(payload->message, message, sizeof(buffer) - sizeof(*payload));
|
|
return send_to_client(client, &payload, sizeof(*payload) + length);
|
|
}
|
|
|
|
static inline int rfb_receive_client_init(void *client, uint8_t is_shared)
|
|
{
|
|
return send_to_client(client, &is_shared, sizeof(is_shared));
|
|
}
|
|
|
|
static inline int
|
|
rfb_send_server_init(void *client, struct rfb_server_init_msg *msg)
|
|
{
|
|
struct rfb_server_init_msg payload;
|
|
memcpy(&payload, msg, sizeof(payload));
|
|
payload.width = htons(payload.width);
|
|
payload.height = htons(payload.height);
|
|
payload.pixel_format.red_max = htons(payload.pixel_format.red_max);
|
|
payload.pixel_format.green_max = htons(payload.pixel_format.green_max);
|
|
payload.pixel_format.blue_max = htons(payload.pixel_format.blue_max);
|
|
payload.name_length = htons(payload.name_length);
|
|
return send_to_client(client, &payload, sizeof(payload));
|
|
}
|
|
|
|
#endif /* _RFB_PROTO_H */
|