From 01ef1d365e5776b130e8b65772a80b6adcb0ed46 Mon Sep 17 00:00:00 2001 From: John Denker Date: Thu, 26 Jul 2012 11:00:48 -0700 Subject: files added by IPv6 patch --- ucspi-tcp-0.88/dns_nd6.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 ucspi-tcp-0.88/dns_nd6.c (limited to 'ucspi-tcp-0.88/dns_nd6.c') diff --git a/ucspi-tcp-0.88/dns_nd6.c b/ucspi-tcp-0.88/dns_nd6.c new file mode 100644 index 0000000..fb1da88 --- /dev/null +++ b/ucspi-tcp-0.88/dns_nd6.c @@ -0,0 +1,28 @@ +#include "byte.h" +#include "fmt.h" +#include "dns.h" + +/* RFC1886: + * 4321:0:1:2:3:4:567:89ab + * -> + * b.a.9.8.7.6.5.0.4.0.0.0.3.0.0.0.2.0.0.0.1.0.0.0.0.0.0.0.1.2.3.4.IP6.INT. + */ + +static inline char tohex(char c) { + return c>=10?c-10+'a':c+'0'; +} + +int dns_name6_domain(char name[DNS_NAME6_DOMAIN],char ip[16]) +{ + unsigned int j; + + for (j=0; j<16; j++) { + name[j*4]=1; + name[j*4+1]=tohex(ip[15-j] & 15); + name[j*4+2]=1; + name[j*4+3]=tohex((unsigned char)ip[15-j] >> 4); + } + byte_copy(name + 4*16,10,"\3ip6\4arpa\0"); + return 4*16+10; +} + -- cgit v1.2.3