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2016-09-12Fix misaligned memory accessMichael Evertz1-2/+4
This changes fixes misaligned memory access. Without the patch I get several "Misaligend access trap for user program 'llmnrd'" messages on my platform if the system has odd hostname length.
2016-08-29llmnrd: Don't send empty AAAA responseTobias Klauser1-1/+8
Don't send an AAAA response if IPv6 is disabled or if no address of the requested address family was found for a given interface. Closes #10 Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-08-17llmnrd: Allow to bind to a specific network interfaceTobias Klauser1-3/+5
Add a command line option -i/--interface which allows to bind the llmnrd sockets to a specific interface. If used, requests are only answered on the specified interface. Example: llmnrd -i eth0 Closes #9 Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-08-02llmnrd: Increase select() timeoutTobias Klauser1-2/+2
There is no need to have such a short timeout value (200us), increase it to 50ms in order to reduce CPU load. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-19llmnrd: Fix address family type in event callbackTobias Klauser1-1/+2
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-18llmnrd: Add IPv6 supportTobias Klauser1-42/+88
Closes #5 Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-18llmnrd: Join IP multicast group on each new interfaceTobias Klauser1-17/+38
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-17llmnrd: Implement message compression for nameTobias Klauser1-7/+8
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-17all: Remove unnecessary log messagesTobias Klauser1-43/+15
These could be used to DoS llmnrd, just silently discard invalid packets. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-17llmnr: Report proper address type in response for qtype ANYTobias Klauser1-1/+4
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-16llmnr: Remove some unnecessary log messagesTobias Klauser1-5/+0
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-16llmnr: Fix response packet byte order and name sizeTobias Klauser1-5/+5
We need to return type, class, ttl and rdlength in network byte order. Also we need to pkt_put() 2 bytes in addition to the hostname length (length and NULL byte). Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-16llmnr: Unindent llmnr_respond()Tobias Klauser1-87/+89
Exit out early if the query class is not LLMNR_QCLASS_IN. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-16pkt: Implement growing of packet on pkt_putTobias Klauser1-1/+1
Also get rid of the unnecessary head member of struct pkt. For now we only append data at the end of a packet. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-16all: Remove trailing whitespacesTobias Klauser1-5/+5
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-06Initial import, still work in progressTobias Klauser1-0/+293
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