#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; }