On Sat, 25 Feb 2006 16:28:50 +0900 Hajimu UMEMOTO <[EMAIL PROTECTED]> wrote:
> Hi, > > >>>>> On Sat, 25 Feb 2006 02:42:46 +0200 > >>>>> Rostislav Krasny <[EMAIL PROTECTED]> said: > > rosti> I've found the problem in both: ftpd(8) and ftp(1). In the ftpd(8) a > rosti> getaddrinfo() is called in two places with hints.ai_socktype == 0 and > rosti> hints.ai_family == PF_UNSPEC. In the ftp(1) a command reply timeout is > rosti> only 60 seconds. Those things are what I've changed to fix the problem. > rosti> Two diffs are attached to this email. The ftpd.c.diff extends -4 and -6 > rosti> ftpd options. So if this patch is good, the ftpd(8) manual page and the > rosti> default /etc/inetd.conf should also be changed appropriately. > > For your ftpd.c.diff, I like your idea to reduce redundant query. It > is enough to query just appropriate address family. In inetd mode, we > know the address family already. So, we don't need to rely on the > -4/-6 option. The following diff is against ftpd.c with your patch > applied: > > --- ftpd.c.rosti Sat Feb 25 15:41:52 2006 > +++ ftpd.c Sat Feb 25 16:01:46 2006 > @@ -423,10 +423,6 @@ main(int argc, char *argv[], char **envp > } > } > > -#ifdef VIRTUAL_HOSTING > - inithosts(family); > -#endif > - > if (daemon_mode) { > int *ctl_sock, fd, maxfd = -1, nfds, i; > fd_set defreadfds, readfds; > @@ -456,6 +452,10 @@ main(int argc, char *argv[], char **envp > sa.sa_handler = reapchild; > (void)sigaction(SIGCHLD, &sa, NULL); > > +#ifdef VIRTUAL_HOSTING > + inithosts(family); > +#endif > + > /* > * Open a socket, bind it to the FTP port, and start > * listening. > @@ -525,6 +525,14 @@ main(int argc, char *argv[], char **envp > syslog(LOG_ERR, "getpeername (%s): %m",argv[0]); > exit(1); > } > + > +#ifdef VIRTUAL_HOSTING > + family = his_addr.su_family; > + if (his_addr.su_family == AF_INET6 && > + IN6_IS_ADDR_V4MAPPED(&his_addr.su_sin6.sin6_addr)) > + family = AF_INET; > + inithosts(family); > +#endif > } > > gotchild: "family = his_addr.su_family;" is really a good idea. But what is the reason to check if IPv6 address of a remote client is IPv4 mapped and assign AF_INET to a 'family' when that's true? The inithosts() doesn't lookup for that address but for the server's hostname and optionally virtual server's hostnames from /etc/ftphosts. I think it's unnecessary and can even produce problems. IMHO "inithosts(family);" could be called right after the "family = his_addr.su_family;" line. > For ftp.c.diff, how about considering adding new option for timeout? That was what I thought about when wrote my previous email. What name could be good for that option? Is "-c seconds" (ftp Command reply timeout in seconds) a good one? > However, I'm still in doubt. I cannot think it is usual situation > that there are unreachable IP addresses in /etc/resolv.conf. It is unusual situation but it can happen. Otherwise this duscussion was not started. _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"