mirror of git://git.psyced.org/git/psyclpc
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/* IPv4/IPv6 name lookup using ERQ
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* by Fini <ujastrow@mail.desy.de>
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* Tue, 9 Mar 2004 08:20:16 +0100 (MET)
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*/
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void get_ip_name(string ip_num) {
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[...]
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num=allocate(4);
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if (sscanf(ip_num, "%d.%d.%d.%d", num[0], num[1], num[2], num[3])!=4)
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continue;
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# ifdef RDNS_DEBUG
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log_file("IP-NAME",
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sprintf(" ** RDNS request for IPv4 %s sent\n", ip_num));
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# endif
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send_erq(ERQ_RLOOKUP, num, #'_got_ipv4_name);
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[...]
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}
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void _got_ipv4_name(int* data, int len) {
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int* x;
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string ip_num, ip_nam;
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if (previous_object()) return; // only the driver may call this
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if (!pointerp(data) || len<5) return;
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x=allocate(4);
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if ((x[0]=data[0])<0) x[0]+=256; // not needed with newer drivers
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if ((x[1]=data[1])<0) x[1]+=256;
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if ((x[2]=data[2])<0) x[2]+=256;
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if ((x[3]=data[3])<0) x[3]+=256;
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ip_num=sprintf("%d.%d.%d.%d", x[0], x[1], x[2], x[3]);
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ip_nam=to_string(data[4..]);
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# ifdef RDNS_DEBUG
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log_file("IP-NAME", sprintf("got v4: %s -> %s\n", ip_num, ip_nam));
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# endif
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if (ip_num==ip_nam) return; // not resolved
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if (!ip_map) ip_map=get_extra_wizinfo(0)[IP_NAMES];
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ip_map[ip_num, 0]=ip_nam;
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ip_map[ip_num, 1]=time();
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}
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