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a8812dd7f1
This adds dns_resource_record_to_wire_format() that generates the raw wire-format of a single DnsResourceRecord object, and caches it in the object, optionally in DNSSEC canonical form. This call is used later to generate the RR serialization of RRs to verify. This adds four new fields to DnsResourceRecord objects: - wire_format points to the buffer with the wire-format version of the RR - wire_format_size stores the size of that buffer - wire_format_rdata_offset specifies the index into the buffer where the RDATA of the RR begins (i.e. the size of the key part of the RR). - wire_format_canonical is a boolean that stores whether the cached wire format is in DNSSEC canonical form or not. Note that this patch adds a mode where a DnsPacket is allocated on the stack (instead of on the heap), so that it is cheaper to reuse the DnsPacket object for generating this wire format. After all we reuse the DnsPacket object for this, since it comes with all the dynamic memory management, and serialization calls we need anyway.
systemd - System and Service Manager
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