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#ifndef VERE_MESA_H
#define VERE_MESA_H
#include "c3/c3.h"
#include "ship.h"
#define MESA_VER 1
#define FINE_PAGE 4096 // packets per page
#define FINE_FRAG 1024 // bytes per fragment packet
#define FINE_PATH_MAX 384 // longest allowed scry path
#define HEAD_SIZE 4 // header size in bytes
#define PACT_SIZE 1472
static c3_w MESA_COOKIE = 0x67e00200;
typedef enum _u3_mesa_ptag {
PACT_RESV = 0,
PACT_PAGE = 1,
PACT_PEEK = 2,
PACT_POKE = 3,
} u3_mesa_ptag;
typedef enum _u3_mesa_rout_tag {
ROUT_GALAXY = 0,
ROUT_OTHER = 1
} u3_mesa_rout_tag;
typedef enum _u3_mesa_hop_type {
HOP_NONE = 0,
HOP_SHORT = 1,
HOP_LONG = 2,
HOP_MANY = 3
} u3_mesa_hop_type;
typedef struct _u3_str {
c3_c* str_c;
c3_w len_w;
} u3_str;
typedef struct _u3_mesa_name_meta {
c3_y ran_y; // rank (2 bits)
c3_y rif_y; // rift-len (2 bits)
c3_y nit_y; // initial overlay (1 bit)
c3_y tau_y; // %data (0) or %auth (1), 0 if !nit_o (1 bit)
c3_y gaf_y; // fragment number length (2bit)
} u3_mesa_name_meta;
typedef struct _u3_mesa_name {
// u3_mesa_name_meta met_u;
u3_ship her_u;
c3_w rif_w;
c3_y boq_y;
c3_o nit_o;
c3_o aut_o;
c3_d fra_d;
c3_s pat_s;
c3_c* pat_c;
u3_str str_u;
} u3_mesa_name;
typedef struct _u3_mesa_data_meta {
c3_y bot_y; // total-fragments len (2 bits)
c3_o aut_o; // auth tag (c3y for message, c3n for pair)
c3_o auv_o; // auth value (c3y for sig/no-pair, c3n for hmac/pair)
c3_y men_y; // fragment length/type (2 bits)
} u3_mesa_data_meta;
typedef enum {
AUTH_SIGN = 0,
AUTH_NONE = 1,
AUTH_HMAC = 2,
AUTH_PAIR = 3,
} u3_mesa_auth_type;
typedef struct _u3_auth_data {
u3_mesa_auth_type typ_e; // none, traversal (none), sig, or hmac
union { //
c3_y sig_y[64]; // signature
c3_y mac_y[16]; // hmac
c3_y has_y[2][32]; // hashes
};
} u3_auth_data;
typedef struct _u3_mesa_data {
c3_d tob_d; // total bytes in message
u3_auth_data aut_u; // authentication
c3_w len_w; // fragment length
c3_y* fra_y; // fragment
} u3_mesa_data;
typedef struct _u3_mesa_head {
u3_mesa_hop_type nex_y; // next-hop
c3_y pro_y; // protocol version
u3_mesa_ptag typ_y; // packet type
c3_y hop_y; // hopcount
c3_w mug_w; // truncated mug checksum
} u3_mesa_head;
//
// +$ cache
// [%rout lanes=(list lanes)]
// [%pending pacs=(list pact)]
typedef struct _u3_mesa_peek_pact {
u3_mesa_name nam_u;
} u3_mesa_peek_pact;
typedef struct _u3_mesa_hop_once {
c3_w len_w;
c3_y* dat_y;
} u3_mesa_hop_once;
typedef struct _u3_mesa_hop_more {
c3_w len_w;
u3_mesa_hop_once* dat_y;
} u3_mesa_hop_more;
typedef union {
c3_y sot_u[6];
u3_mesa_hop_once one_u;
u3_mesa_hop_more man_u;
} u3_mesa_hop;
typedef struct _u3_mesa_page_pact {
u3_mesa_name nam_u;
u3_mesa_data dat_u;
union {
c3_y sot_u[6];
u3_mesa_hop_once one_u;
u3_mesa_hop_more man_u;
};
} u3_mesa_page_pact;
typedef struct _u3_mesa_poke_pact {
u3_mesa_name nam_u;
u3_mesa_name pay_u;
u3_mesa_data dat_u;
} u3_mesa_poke_pact;
typedef struct _u3_mesa_pact {
u3_mesa_head hed_u;
union {
u3_mesa_poke_pact pok_u;
u3_mesa_page_pact pag_u;
u3_mesa_peek_pact pek_u;
};
} u3_mesa_pact;
typedef struct _u3_etcher {
c3_y* buf_y;
c3_w len_w;
c3_w cap_w;
c3_d bit_d; // for _etch_bits
c3_y off_y; // for _etch_bits
} u3_etcher;
c3_d mesa_num_leaves(c3_d tot_d);
c3_w mesa_size_pact(u3_mesa_pact* pac_u);
c3_o mesa_is_new_pact(c3_y* buf_y, c3_w len_w);
void mesa_free_pact(u3_mesa_pact* pac_u);
c3_w mesa_etch_pact_to_buf(c3_y* buf_y, c3_w cap_w, u3_mesa_pact *pac_u);
void etcher_init(u3_etcher* ech_u, c3_y* buf_y, c3_w cap_w);
void _mesa_etch_name(u3_etcher *ech_u, u3_mesa_name* nam_u);
c3_c* mesa_sift_pact_from_buf(u3_mesa_pact *pac_u, c3_y* buf_y, c3_w len_w);
void inc_hopcount(u3_mesa_head*);
void log_pact(u3_mesa_pact* pac_u);
void log_name(u3_mesa_name* nam_u);
#endif
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