This addresses a situation when a boolean type is represented by
an integer and performing a left shift on a boolean causes
an integer overflow.
This fixes the following runtime error:
"left shift of 1 by 31 places cannot be represented in type 'int'"
- Remove application_encrypt/application_decrypt
- Make mesh_crypto_privacy_counter private, add mesh_crypto_pecb
- Make *_nonce functions private and align their implementation to be
more consistent
- Refactor network_encrypt/network_decrypt to use *_nonce functions and
rename them to packet_encrypt/packet_decrypt
- Refactor packet_encode/packet_decode
Friendship support re-written such that it can now support multiple
nodes (on multiple mesh networks) as friends to remote Low Power Nodes
(LPNs). Validated to properly respond to Friend Requests when enabled,
and a hard coded Friend Queue size of 32 (FRND_CACHE_MAX).
One time test at startup to ensure either kernel version v4.9 or later,
*or* that required AES-CCM support has been back-ported. If support not
there, daemon will run without providing D-Bus service or attaching to
controllers (prevents systemd thrashing).
This consolidates definitions of commonly used constant values
into a single header file. The constant values are based on mesh
specification, plus a few internal utility constants (masks, etc.)
Also, removes redundant redefinition maximum message length.
Provisioning packets are defined in the specification
as packed big endian structures. Instead of specifying
an octet array, we now use struct matching the spec.
Relay is now a cooperation between all the nodes on the daemon.
If any one or more nodes have relay enabled and a received packet
is addressed to a Group, or a non-present Unicast address, then the
packet's TTL is decremented and it is resent.
