-/*
- * read_ctrl_packet - Read a 'packet' of data from a servlink control
- * link and process it.
- */
-void
-read_ctrl_packet(rb_fde_t *F, void *data)
-{
- struct Client *server = data;
- struct LocalUser *lserver = server->localClient;
- struct SlinkRpl *reply;
- int length = 0;
- unsigned char tmp[2];
- unsigned char *len = tmp;
- struct SlinkRplDef *replydef;
-#ifdef USE_IODEBUG_HOOKS
- hook_data_int hdata;
-#endif
-
- s_assert(lserver != NULL);
- if(IsAnyDead(server))
- return;
-
- reply = &lserver->slinkrpl;
-
-
- if(!reply->command)
- {
- reply->gotdatalen = 0;
- reply->readdata = 0;
- reply->data = NULL;
-
- length = rb_read(F, tmp, 1);
-
- if(length <= 0)
- {
- if((length == -1) && rb_ignore_errno(errno))
- goto nodata;
- error_exit_client(server, length);
- return;
- }
-
- reply->command = tmp[0];
- }
-
- for (replydef = slinkrpltab; replydef->handler; replydef++)
- {
- if((int)replydef->replyid == reply->command)
- break;
- }
-
- /* we should be able to trust a local slink process...
- * and if it sends an invalid command, that's a bug.. */
- s_assert(replydef->handler);
-
- if((replydef->flags & SLINKRPL_FLAG_DATA) && (reply->gotdatalen < 2))
- {
- /* we need a datalen u16 which we don't have yet... */
- length = rb_read(F, len, (2 - reply->gotdatalen));
- if(length <= 0)
- {
- if((length == -1) && rb_ignore_errno(errno))
- goto nodata;
- error_exit_client(server, length);
- return;
- }
-
- if(reply->gotdatalen == 0)
- {
- reply->datalen = *len << 8;
- reply->gotdatalen++;
- length--;
- len++;
- }
- if(length && (reply->gotdatalen == 1))
- {
- reply->datalen |= *len;
- reply->gotdatalen++;
- if(reply->datalen > 0)
- reply->data = rb_malloc(reply->datalen);
- }
-
- if(reply->gotdatalen < 2)
- return; /* wait for more data */
- }
-
- if(reply->readdata < reply->datalen) /* try to get any remaining data */
- {
- length = rb_read(F, (reply->data + reply->readdata),
- (reply->datalen - reply->readdata));
- if(length <= 0)
- {
- if((length == -1) && rb_ignore_errno(errno))
- goto nodata;
- error_exit_client(server, length);
- return;
- }
-
- reply->readdata += length;
- if(reply->readdata < reply->datalen)
- return; /* wait for more data */
- }
-
-#ifdef USE_IODEBUG_HOOKS
- hdata.client = server;
- hdata.arg1 = NULL;
- hdata.arg2 = reply->command;
- hdata.data = NULL;
- call_hook(h_iorecvctrl_id, &hdata);
-#endif
-
- /* we now have the command and any data, pass it off to the handler */
- (*replydef->handler) (reply->command, reply->datalen, reply->data, server);
-
- /* reset SlinkRpl */
- if(reply->datalen > 0)
- rb_free(reply->data);
- reply->command = 0;
-
- if(IsAnyDead(server))
- return;
-
- nodata:
- /* If we get here, we need to register for another COMM_SELECT_READ */
- rb_setselect(F, RB_SELECT_READ, read_ctrl_packet, server);
-}
-