/** Release a Connection and all memory associated with it.
* The connection's DNS reply field is freed, its file descriptor is
* closed, its msgq and sendq are cleared, and its associated Listener
* is dereferenced. Then it is prepended to #connectionFreeList.
* @param[in] con Connection to free.
*/
static void dealloc_connection(struct Connection* con)
{
assert(con_verify(con));
assert(!t_active(&(con_proc(con))));
assert(!t_onqueue(&(con_proc(con))));
Debug((DEBUG_LIST, "Deallocating connection %p", con));
if (con_dns_reply(con))
--(con_dns_reply(con)->ref_count);
if (con_dnsbl_reply(con))
--(con_dnsbl_reply(con)->ref_count);
if (-1 < con_fd(con))
close(con_fd(con));
MsgQClear(&(con_sendQ(con)));
client_drop_sendq(con);
DBufClear(&(con_recvQ(con)));
if (con_listener(con))
release_listener(con_listener(con));
if (con_loc(con))
MyFree(con_loc(con));
--connections.inuse;
con_next(con) = connectionFreeList;
connectionFreeList = con;
con_magic(con) = 0;
}
/*
* Create a new struct Client structure and set it to initial state.
*
* from == NULL, create local client (a client connected to a socket).
*
* from != NULL, create remote client (behind a socket associated with
* the client defined by 'from').
* ('from' is a local client!!).
*/
struct Client* make_client(struct Client *from, int status)
{
struct Client* cptr = 0;
struct Connection* con = 0;
assert(!from || cli_verify(from));
cptr = alloc_client();
assert(0 != cptr);
assert(!cli_magic(cptr));
assert(0 == from || 0 != cli_connect(from));
if (!from) { /* local client, allocate a struct Connection */
con = alloc_connection();
assert(0 != con);
assert(!con_magic(con));
con_magic(con) = CONNECTION_MAGIC;
con_fd(con) = -1; /* initialize struct Connection */
con_freeflag(con) = 0;
con_nextnick(con) = CurrentTime - NICK_DELAY;
con_nexttarget(con) = CurrentTime - (TARGET_DELAY * (STARTTARGETS - 1));
con_handler(con) = UNREGISTERED_HANDLER;
con_client(con) = cptr;
cli_local(cptr) = 1; /* Set certain fields of the struct Client */
cli_since(cptr) = cli_lasttime(cptr) = cli_firsttime(cptr) = CurrentTime;
cli_lastnick(cptr) = TStime();
} else
con = cli_connect(from); /* use 'from's connection */
assert(0 != con);
assert(con_verify(con));
cli_magic(cptr) = CLIENT_MAGIC;
cli_connect(cptr) = con; /* set the connection and other fields */
cli_status(cptr) = status;
cli_hnext(cptr) = cptr;
strcpy(cli_username(cptr), "unknown");
return cptr;
}