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2getdns_convert(3)                   getdns                   getdns_convert(3)
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NAME

7       getdns_convert,       getdns_convert_dns_name_to_fqdn,      getdns_con‐
8       vert_fqdn_to_dns_name -- convert dname between presentation- and  wire-
9       format
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LIBRARY

13       DNS Resolver library (libgetdns, -lgetdns)
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SYNOPSIS

17       #include <getdns.h>
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19       getdns_return_t
20       getdns_convert_dns_name_to_fqdn          (const          getdns_bindata
21       *dns_name_wire_fmt,
22          char **fqdn_as_string)
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24       getdns_return_t
25       getdns_convert_fqdn_to_dns_name (char *fqdn_as_string,
26          const getdns_bindata **dns_name_wire_fmt)
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DESCRIPTION

30       Names in DNS fields are stored in a fashion  very  different  from  the
31       normal  presentation format normally used in applications. The DNS for‐
32       mat is described in the first paragraph in Section 3.1 of RFC 1035; the
33       presentation  format  here  is  a  null-terminated string with interior
34       dots. These helper functions only work with names  in  the  DNS  format
35       that are not compressed. They are useful for converting domain names in
36       the replies_tree to and from the FQDN presentation format.
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38       getdns_convert_dns_name_to_fqdn() converts a domain name in DNS  format
39       to  the  presentation format. For example, the hex sequence 03 77 77 77
40       07 65 78 61 6d 70 6c 65 03 63 6f 6d 00 would be converted to "www.exam‐
41       ple.com".   getdns_convert_fqdn_to_dns_name() does the reverse: it con‐
42       verts a null-terminated string in FQDN format to bytes in DNS format.
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45       dns_name_wire_fmt The non-compressed DNS  wire  format  name  (per  RFC
46          1035) in a bindata structure that will be converted to/from an fqdn.
47          In getdns_convert_fqdn_to_dns_name storage is  allocated  using  the
48          system allocator (malloc) and must be freed by the caller.
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51       fqdn_as_string  a  null  terminated string to be converted to/from non-
52          compressed DNS wire format name  (per  RFC  1035).   In  getdns_con‐
53          vert_dns_name_to_fqdn  storage is allocated using the system alloca‐
54          tor (malloc) and must be freed by the caller.
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RETURN VALUES

60       Upon successful completion the function returns GETDNS_RETURN_GOOD
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EXAMPLES

64       TBD
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SEE ALSO

68       libgetdns(3)
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73getdns 1.4.2                     December 2015               getdns_convert(3)
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