jitterbug/server.h

#ifndef _JITTERBUG__SERVER_H
#define _JITTERBUG__SERVER_H

#include "wire.h"
#include <poll.h>
#include <stdint.h>

#define MATCH_RULE_MAX 1024
#define MATCH_RULE_MAX_ARG 12

typedef struct {
    uint8_t type;
    bool eavesdrop;
    char *sender, *interface, *member, *path, *path_namespace, *destination, *arg0namespace, *rule_string;
    char *arg[MATCH_RULE_MAX_ARG]; /* TODO: spec states that indexes 0 to 63 should be supported */
    char *arg_path[MATCH_RULE_MAX_ARG]; /* TODO: spec states that indexes 0 to 63 should be supported */
} MatchRule;

// TODO: dynamically size the arrays
#define BUS_MAX_CLIENTS 256
#define BUS_MAX_NAMES 512
#define BUS_MAX_MATCH 12
#define BUS_NAMES_PER_CLIENT 4
#define BUS_BACKLOG 12

enum {
    BUS_CLIENT_STATE_NONE,
    BUS_CLIENT_STATE_WAIT_AUTH,
    BUS_CLIENT_STATE_WAIT_BEGIN,
    BUS_CLIENT_STATE_READY
};

typedef struct bus_name {
    char *name;
    struct bus_client *client;
    uint16_t chain_count;
    uint16_t root_index;
} BusName;

typedef struct bus_client {
    int fd;
    BusName *unique_name;
    int16_t fd_index;
    uint8_t state;
    int8_t match_count;
    MatchRule *matches[BUS_MAX_MATCH];
    BusName *owned_names[BUS_NAMES_PER_CLIENT];
} BusClient;

typedef struct {
    int sock_fd;
    int fd_num;
    int names_count;
    int clients_count;
    int urandom_fd;
    BusClient clients[BUS_MAX_CLIENTS];
    BusName names[BUS_MAX_NAMES];
    struct pollfd fds[BUS_MAX_CLIENTS + 1];
} Bus;

typedef struct {
    const char *name;
    int (*handler)(Bus *bus, BusClient *client, WireMsg *msg, WireCtx *ctx, WireCtx *reply_ctx);
} BusMethodHandler;


int bus_client_add(Bus *s, int fd);
void bus_client_remove(Bus *s, BusClient *client);
void bus_free(Bus *s);
Bus *bus_create(const char *socket_path);
int bus_turn(Bus *s);


#endif // _JITTERBUG__SERVER_H