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danger		Posted :: 12:27am, Sun, Feb 14, 2010 Subject :: bug in async dns code

Posts: 3		I am using emech 3.0.99p3 on FreeBSD 7.x/amd64 compiled from source. The mech refuses to resolve the hostnames correctly, even though I tried to configure async dns with: dnsserver +xx.240.234.xxx dnsserver +xx.240.232.xxx dnsserver +xx.240.232.xxx dnsroot root.zone root.zone was downloaded from your site. With DEBUG enabled, I can see messages like these: (rawdns_get_ip) xxx.xxx.xxx -> 4.72.160.0 (init_rawdns) {5} dnssock is active (rawdns) questions xx.240.234.xxx: uptime.energymech.net (process_rawdns) packet from: 92.240.234.125 (12 bytes) (parse_query) 4367581: flags = 33025 { 1000000010000001 1 QR 1 (Answer) RD } dns->when 1266100571 dns->ip 0.0.0.0 dns->auth <NULL> : - (0) dns->auth2 <NULL> : - (0) dns->findauth 0 dns->id 30807 dns->cname <NULL> dns->host uptime.energymech.net For some reason, it resolves all the server hostnames to 4.72.160.0. With IP addresses and also with async dns disabled, the emech connects to IRC w/o any problems. By the way, the src/function.c file needs #include <sys/param.h> to compile on FreeBSD.
danger		Posted :: 12:05pm, Sun, Feb 14, 2010

Posts: 3		so, I have hunted down the problem. It is actually two different problems here, one of them is that the emech is unable to connect to IRC, which is because src/dns.c:rawdns_get_ip() is incomplete, it only works when a IP in dot-notation is set in the mech.conf. It actually doesn't do any resolving. So I have copied part of the src/socket.c:get_ip() function back to rawdns_get_ip() and emech is now able to connect to IRC. Now, the other problem is probably somewhere in src/dns.c:rawdns() or src/dns.c:parse_query(), as uptime module is unable to resolve uptime.energymech.net as seen in my previous message.