This should be largely transparent, but it drastically
improves performance and reduces memory foot-print when
configuring large numbers domains of the form
local=/adserver.com/
or
local=/adserver.com/#
Lookup times now grow as log-to-base-2 of the number of domains,
rather than greater than linearly, as before.
The change makes multiple addresses associated with a domain work
address=/example.com/1.2.3.4
address=/example.com/5.6.7.8
It also handles multiple upstream servers for a domain better; using
the same try/retry alogrithms as non domain-specific servers. This
also applies to DNSSEC-generated queries.
Finally, some of the oldest and gnarliest code in dnsmasq has had
a significant clean-up. It's far from perfect, but it _is_ better.
We want to sort such that the most recent/relevant tag is first
and gets used to set the compiled-in version.
The solution is far from general, but works for the tag formats
used by dnsmasq. v2.84 sorts before v2.83, but v2.83 sorts
before v2.83rc1 and 2.83rc1 sorts before v2.83test1
Unlike COPTS=-DHAVE_DNSSEC, allow usage of just sha256 function from
nettle, but keep DNSSEC disabled at build time. Skips use of internal
hash implementation without support for validation built-in.
Use the SHA-256 hash function to verify that DNS answers
received are for the questions originally asked. This replaces
the slightly insecure SHA-1 (when compiled with DNSSEC) or
the very insecure CRC32 (otherwise). Refer: CERT VU#434904.
If arg2 of pkg-wrapper is "--copy", then arg1 is NOT the name of
the package manager (--copy doesn't invoke it) it's a secondary
config string that inhibts the copy if found. This patch allows that
to be the empty string, for unconditional copy, and modifies the
ubus linker config to use it. It worked by coincidence before, because
there was no config string called "pkg-config".
TODO
hostname handling.
update DHCP6 configs from dns
parse domain=<domain>,<IPv6 range>
pretty-print counted string options.
DECLINE messages
lease-script fro DHCPv6
Simon Kelley