MFC r310957,r310958,r310960:

r310957:

Use strlcpy when copying `com` to pdu->community to avoid potential
buffer overruns

CID: 1006823, 1006824

r310958:

Initialize ret to SNMPD_INPUT_OK at the top of snmp_input_start(..) to
avoid returning an uninitialized value

There are some really complicated, snakey if-statements combined with
switch statements that could result in an invalid value being returned
as `ret`

CID: 1006551

r310960:

Similar to r310954, set .len to 0 on malloc failure and to `len` only
on success

MFstable/11 r310904:

MFC r310662,r310663:

r310662:

style(9): snmp_send_packet(..): fix whitespace

r310663:

style(9): ip_get(..): clean up whitespace

MFstable/11 r310901:

MFC r310648:

style(9): clean up trailing whitespace

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

In bsnmpd(1) add support for SNMPv3 message processing model, including message authentication, packet encryption & view-based access control (RFC 3412, 3414, 3415).

Sponsored by: The FreeBSD Foundation
Reviewed by: philip@ (mostly)
Approved by: philip@

This commit was generated by cvs2svn to compensate for changes in r156066,
which included commits to RCS files with non-trunk default branches.

Virgin import of bsnmpd 1.12

Vendor patch: string_get_max() function to return strings with a maximum
SNMP string length.

Virgin import of bsnmpd 1.7

Virgin import of bsnmpd 1.5a

Virgin import of bsnmp 1.4