int txop_ward_init(shpeer_t *cli_peer, tx_ward_t *ward) { unsigned char context[128]; shkey_t sig_key; tx_context_t ctx; tx_t *tx; int err; if (ward->ward_stamp == SHTIME_UNDEFINED) ward->ward_stamp = shtime(); if (ward->ward_expire == SHTIME_UNDEFINED) ward->ward_expire = shtime_adj(shtime(), MAX_SHARE_SESSION_TIME); memcpy(&ward->ward_tx.tx_peer, shpeer_kpriv(sharedaemon_peer()), sizeof(shpeer_t)); memset(&ctx, 0, sizeof(ctx)); err = inittx_context(&ctx, get_tx_key(ward), ashkey_uniq()); if (err) return (err); err = tx_save(&ctx); if (err) return (err); /* store key reference to generated context */ memcpy(&ward->ward_ctx, &ctx.ctx_tx.tx_key, sizeof(ward->ward_ctx)); return (0); }
int tx_send(shpeer_t *cli_peer, tx_t *tx) { unsigned char *data = (unsigned char *)tx; size_t data_len; tx_ledger_t *l; int err; txop_t *op; if (!data) return (SHERR_INVAL); data_len = get_tx_size(tx); if (!data_len) return (0); op = get_tx_op(tx->tx_op); if (!op) return (SHERR_INVAL); if (op->op_send) { err = op->op_send(cli_peer, data); if (err) { if (err == SHERR_OPNOTSUPP) return (0); return (err); } } if (is_tx_stored(tx->tx_op)) { l = ledger_load(shpeer_kpriv(sharedaemon_peer()), shtime()); if (l) { ledger_tx_add(l, (tx_t *)data); ledger_close(l); } } #if 0 /* encapsulate for network transfer. */ tx_wrap(shpeer_kpriv(cli_peer), (tx_t *)tx); #endif if (cli_peer) { sched_tx_sink(shpeer_kpriv(cli_peer), data, data_len); } else { sched_tx(data, data_len); } return (0); }
shkey_t *get_bond_key(shkey_t *sender, shkey_t *receiver, shkey_t *ref) { static shkey_t ret_key; shkey_t keys[3]; shkey_t *key; if (!sender) sender = shpeer_kpriv(sharedaemon_peer()); else if (!receiver) receiver = shpeer_kpriv(sharedaemon_peer()); if (!ref) ref = ashkey_blank(); memcpy(&keys[0], sender, sizeof(shkey_t)); memcpy(&keys[1], receiver, sizeof(shkey_t)); memcpy(&keys[2], ref, sizeof(shkey_t)); key = shkey_bin(keys, sizeof(shkey_t) * 3); memcpy(&ret_key, key, sizeof(ret_key)); shkey_free(&key); return (&ret_key); }
int sharedaemon_bcast_recv(void) { struct sockaddr_in addr; socklen_t addr_len; struct timeval to; fd_set read_set; shpeer_t *peer; char dgram[512]; ssize_t r_len; int err; err = bcast_recv_init(); if (err) { return (err); } FD_ZERO(&read_set); FD_SET(_bcast_recv_fd, &read_set); /* nonblocking read */ memset(&to, 0, sizeof(to)); err = select(_bcast_recv_fd+1, &read_set, NULL, NULL, &to); if (err < 0) { return (-errno); } if (err == 0) { //fprintf(stderr, "\rWaiting for select(_bcast_recv_fd).."); //fflush(stderr); return (0); /* nothing to read */ } addr_len = sizeof(addr); memset(&addr, 0, addr_len); r_len = recvfrom(_bcast_recv_fd, dgram, sizeof dgram, 0, &addr, &addr_len); if (r_len < 0) { fprintf(stderr, "DEBUG: %d = recvfrom()\n", r_len); return (-errno); } /* and who are you? */ if (r_len < sizeof(shpeer_t)) { fprintf(stderr, "DEBUG: <%d bytes> pending..\n", r_len); return (SHERR_INVAL); } #if 0 now = shtime(); tx = (tx_t *)dgram; if (shtime_after(tx->tx_stamp, now) || shtime_before(tx->tx_stamp, shtime_adj(now, -BROADCAST_TIMEOUT))) { /* broadcast message must indicate sane time-frame. */ return (SHERR_TIME); } switch (tx->tx_op) { case TX_PEER: peer_tx = (tx_peer_t *)dgram; if (0 != shkey_cmp(&tx->tx_peer, shpeer_kpriv(&peer_tx->peer))) return (SHERR_INVAL); /* only accept self-referencing broadcast */ } #endif /* share-daemon broadcasting it's peer address. */ peer = (shpeer_t *)dgram; if (!shkey_cmp(shpeer_kpub(sharedaemon_peer()), shpeer_kpub(peer))) { /* this is not a shared peer */ return (0); /* all done */ } if (!shkey_cmp(shpeer_kpub(sharedaemon_peer()), shpeer_kpub(peer))) { fprintf(stderr, "DEBUG: invalid key\n"); /* this is a peer referencing ourselves. */ //err = sharedaemon_netclient_alias(&addr); } switch (peer->type) { case SHNET_PEER_LOCAL: case SHNET_PEER_IPV4: /* memset(&addr, '\000', sizeof(struct sockaddr_in)); memcpy(&addr, &peer_tx->peer.addr, sizeof(peer_tx->peer.addr)); */ fprintf(stderr, "DEBUG: received UDP broadcast with peer \"%s\"\n", shpeer_print(peer)); fprintf(stderr, "DEBUG: received UDP broadcast for \"%s\" port %d\n", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port)); if (!peer->addr.sin_port) break; /* otay */ addr.sin_family = AF_INET; err = sharedaemon_netclient_conn(peer, &addr); if (err) return (err); break; } fprintf(stderr, "DEBUG: processed bcast recv\n"); return (0); }