1ldns(3)                    Library Functions Manual                    ldns(3)
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NAME

6       ldns_rr_descriptor, ldns_rr_descript, ldns_rr_descriptor_minimum,
7       ldns_rr_descriptor_maximum, ldns_rr_descriptor_field_type - rdata field
8       descriptors
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10

SYNOPSIS

12       #include <stdint.h>
13       #include <stdbool.h>
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15       #include <ldns/ldns.h>
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17       const ldns_rr_descriptor* ldns_rr_descript(uint16_t type);
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19       size_t ldns_rr_descriptor_minimum(const ldns_rr_descriptor *descrip‐
20       tor);
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22       size_t ldns_rr_descriptor_maximum(const ldns_rr_descriptor *descrip‐
23       tor);
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25       ldns_rdf_type ldns_rr_descriptor_field_type(const ldns_rr_descriptor
26       *descriptor, size_t field);
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DESCRIPTION

29       ldns_rr_descriptor
30              Contains all information about resource record types.
31
32              This structure contains, for all rr types, the rdata fields that
33              are defined.
34              struct ldns_struct_rr_descriptor
35              {
36                   Type of the RR that is described here:
37                   ldns_rr_type    _type;
38                   Textual name of the RR type.:
39                   const char *_name;
40                   Minimum number of rdata fields in the RRs of this type.:
41                   uint8_t     _minimum;
42                   Maximum number of rdata fields in the RRs of this type.:
43                   uint8_t     _maximum;
44                   Wireformat specification for the rr, i.e. the types of
45              rdata fields in their respective order.:
46                   const ldns_rdf_type *_wireformat;
47                   Special rdf types:
48                   ldns_rdf_type _variable;
49                   Specifies whether compression can be used for dnames in
50              this RR type.:
51                   ldns_rr_compress _compress;
52                   The number of DNAMEs in the _wireformat string, for pars‐
53              ing.:
54                   uint8_t _dname_count;
55              };
56              typedef struct ldns_struct_rr_descriptor ldns_rr_descriptor;
57
58       ldns_rr_descript() returns the resource record descriptor for the given
59              rr type.
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61              type: the type value of the rr type
62              Returns the ldns_rr_descriptor for this type
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64       ldns_rr_descriptor_minimum() returns the minimum number of rdata fields
65              of the rr type this descriptor describes.
66
67              descriptor: for an rr type
68              Returns the minimum number of rdata fields
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70       ldns_rr_descriptor_maximum() returns the maximum number of rdata fields
71              of the rr type this descriptor describes.
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73              descriptor: for an rr type
74              Returns the maximum number of rdata fields
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76       ldns_rr_descriptor_field_type() returns the rdf type for the given
77              rdata field number of the rr type for the given descriptor.
78
79              descriptor: for an rr type
80              field: the field number
81              Returns the rdf type for the field
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AUTHOR

84       The ldns team at NLnet Labs. Which consists out of Jelte Jansen and
85       Miek Gieben.
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REPORTING BUGS

89       Please report bugs to ldns-team@nlnetlabs.nl or in our bugzilla at
90       http://www.nlnetlabs.nl/bugs/index.html
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94       Copyright (c) 2004 - 2006 NLnet Labs.
95
96       Licensed under the BSD License. There is NO warranty; not even for MER‐
97       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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SEE ALSO

101       ldns_rr, ldns_rdf.  And perldoc Net::DNS, RFC1034, RFC1035, RFC4033,
102       RFC4034  and RFC4035.
103

REMARKS

105       This manpage was automatically generated from the ldns source code by
106       use of Doxygen and some perl.
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110                                  30 May 2006                          ldns(3)
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