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#ifndef __CONTROL_H__
#define __CONTROL_H__
#define NSCTL_PORT 1702
#define NSCTL_MAGIC 0x9013
/* builtin commands */
#define NSCTL_REQUEST (1 << 4)
#define NSCTL_REQ_LOAD (NSCTL_REQUEST | 1)
#define NSCTL_REQ_UNLOAD (NSCTL_REQUEST | 2)
#define NSCTL_REQ_HELP (NSCTL_REQUEST | 3)
/* general control message, passed to plugins */
#define NSCTL_REQ_CONTROL (NSCTL_REQUEST | 4)
/* response messages */
#define NSCTL_RESPONSE (1 << 5)
#define NSCTL_RES_OK (NSCTL_RESPONSE | 1)
#define NSCTL_RES_ERR (NSCTL_RESPONSE | 2)
/* unpack errors */
#define NSCTL_ERR_SHORT -1 // short packet
#define NSCTL_ERR_LONG -2 // packet exceeds max, or trailing cr*p
#define NSCTL_ERR_MAGIC -3 // invalid magic number
#define NSCTL_ERR_TYPE -4 // unrecognised type
#define NSCTL_MAX_PKT_SZ 4096
struct nsctl_packet {
uint16_t magic;
uint8_t type;
uint8_t argc;
char argv[NSCTL_MAX_PKT_SZ - 4];
} __attribute__ ((packed));
#define NSCTL_MAX_ARG_SZ 512
struct nsctl_args {
uint8_t len;
char value[NSCTL_MAX_ARG_SZ - 1];
} __attribute__ ((packed));
/* parsed packet */
struct nsctl {
uint8_t type;
uint8_t argc;
char *argv[0xff];
};
int pack_control(uint8_t *data, int len, uint8_t type, int argc, char *argv[]);
int unpack_control(struct nsctl *packet, uint8_t *data, int len);
void dump_control(struct nsctl *control, FILE *stream);
#endif /* __CONTROL_H__ */
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