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make linkable; add rdatalist; convert to buffers
This commit is contained in:
Bob Halley
parent
975922093c
commit
a9179fca23
1 changed files with 38 additions and 32 deletions
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@ -91,10 +91,11 @@
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*** Imports
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***/
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#include <isc/lex.h>
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#include <dns/types.h>
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#include <dns/name.h>
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/*****
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***** RData
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*****
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@ -108,17 +109,27 @@
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***/
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/*
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* Clients are strongly discouraged from using this type directly.
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* Clients are strongly discouraged from using this type directly, with
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* the exception of the 'link' field which may be used directly for whatever
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* purpose the client desires.
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*/
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struct dns_rdata {
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unsigned char *data;
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unsigned int length;
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dns_rdataclass_t class;
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dns_rdatatype_t type;
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/*
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* XXX should rdata be linkable (i.e. as in <isc/list.h>) to make
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* rdata lists easy?
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*/
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unsigned char * data;
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unsigned int length;
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dns_rdataclass_t class;
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dns_rdatatype_t type;
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ISC_LINK(dns_rdata_t) link;
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};
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/*
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* Clients may use this type directly.
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*/
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struct dns_rdatalist {
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dns_rdataclass_t class;
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dns_rdatatype_t type;
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dns_ttl_t ttl;
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ISC_LIST(dns_rdata_t) rdata;
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ISC_LINK(dns_rdatalist_t) link;
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};
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/***
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@ -176,11 +187,10 @@ void dns_rdata_toregion(dns_rdata_t *rdata, isc_region_t *r);
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dns_result_t dns_rdata_fromwire(dns_rdata_t *rdata,
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dns_rdataclass_t class, dns_rdatatype_t type,
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isc_region_t *source,
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dns_decompression_t *dctx,
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isc_buffer_t *source,
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dns_decompress_t *dctx,
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isc_boolean_t downcase,
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isc_region_t *target,
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unsigned int *bytesp);
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isc_buffer_t *target);
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/*
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* Copy the possibly-compressed rdata at source into the target region.
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*
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@ -194,9 +204,9 @@ dns_result_t dns_rdata_fromwire(dns_rdata_t *rdata,
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*
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* 'class' and 'type' are valid.
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*
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* 'source' is a valid region.
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* 'source' is a valid binary buffer.
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*
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* 'target' is a valid region.
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* 'target' is a valid binary buffer.
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*
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* 'dctx' is a valid decompression context.
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*
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@ -220,8 +230,8 @@ dns_result_t dns_rdata_fromwire(dns_rdata_t *rdata,
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*/
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dns_result_t dns_rdata_towire(dns_rdata_t *rdata,
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dns_compression_t *cctx,
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isc_region_t *target, unsigned int *bytesp);
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dns_compress_t *cctx,
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isc_buffer_t *target);
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/*
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* Convert 'rdata' into wire format, compressing it as specified by the
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* compression context 'cctx', and storing the result in 'target'.
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@ -233,15 +243,14 @@ dns_result_t dns_rdata_towire(dns_rdata_t *rdata,
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* Requires:
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* 'rdata' is a valid, non-empty rdata
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*
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* target is a valid region
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* target is a valid binary buffer
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*
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* Any offsets specified in a global compression table are valid
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* for target.
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*
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* Ensures:
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* If the result is success:
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* *bytesp is the number of bytes of the target region that
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* were used.
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* The used space in target is updated.
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*
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* Returns:
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* Success
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@ -254,7 +263,7 @@ dns_result_t dns_rdata_fromtext(dns_rdata_t *rdata,
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isc_lex_t *lexer,
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dns_name_t *origin,
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isc_boolean_t downcase,
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isc_region_t *target, unsigned int *bytesp);
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isc_buffer_t *target);
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/*
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* Convert the textual representation of a DNS rdata into uncompressed wire
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* form stored in the target region. Tokens constituting the text of the rdata
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@ -282,8 +291,7 @@ dns_result_t dns_rdata_fromtext(dns_rdata_t *rdata,
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* The conditions dns_name_fromtext() ensures for names hold
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* for all names in the rdata.
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*
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* *bytesp is the number of bytes of the target region that
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* were used.
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* The used space in target is updated.
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*
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* Result:
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* Success
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@ -295,7 +303,7 @@ dns_result_t dns_rdata_fromtext(dns_rdata_t *rdata,
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dns_result_t dns_rdata_totext(dns_rdata_t *rdata,
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dns_name_t *origin,
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isc_textregion_t *target, unsigned int *bytesp);
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isc_buffer_t *target);
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/*
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* Convert 'rdata' into text format, storing the result in 'target'.
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*
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@ -309,13 +317,12 @@ dns_result_t dns_rdata_totext(dns_rdata_t *rdata,
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*
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* 'origin' is NULL, or is a valid name
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*
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* 'target' is a valid text region
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* 'target' is a valid text buffer
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*
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* Ensures:
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* If the result is success:
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*
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* *bytesp is the number of bytes of the target region that
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* were used.
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* The used space in target is updated.
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*
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* Returns:
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* Success
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@ -326,7 +333,7 @@ dns_result_t dns_rdata_totext(dns_rdata_t *rdata,
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dns_result_t dns_rdata_fromstruct(dns_rdata_t *rdata,
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dns_rdataclass_t class, dns_rdatatype_t type,
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void *source,
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isc_region_t *target, unsigned int *bytesp);
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isc_buffer_t *target);
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/*
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* Convert the C structure representation of an rdata into uncompressed wire
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* format in 'target'.
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@ -339,14 +346,13 @@ dns_result_t dns_rdata_fromstruct(dns_rdata_t *rdata,
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*
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* 'source' points to a valid C struct for the class and type.
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*
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* 'target' is a valid region.
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* 'target' is a valid binary buffer.
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*
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* Ensures:
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* If result is success:
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* If 'rdata' is not NULL, it is attached to the target.
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*
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* *bytesp is the number of bytes of the target region that
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* were used.
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* The used space in 'target' is updated.
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*
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* Result:
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* Success
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