[collectd-changes] collectd, the system statistics collection daemon: Changes to 'master'

[Florian Forster]

 configure.in          |   84 +++++
 src/Makefile.am       |    6 +
 src/collectd.conf.pod |   39 +++
 src/network.c         |  905 ++++++++++++++++++++++++++++++++++++++++---------
 src/network.h         |    7 +
 5 files changed, 888 insertions(+), 153 deletions(-)

New commits:
commit 6c4006c26484b1b28d59d4e65623b96ac0767919
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sat Apr 11 01:08:40 2009 +0200

    network plugin: Implement signing and encryption of network traffic.
    
    The patch adds shared secret signing and encryption of network traffic.
    Currently, there are three “security levels”:
    
     - Encrypt
       Encrypt outgoing data and only accept encrypted data when receiving.
    
     - Sign
       Outgoing data is signed; signed and encrypted data is accepted when
       receiving.
    
     - None
       Send without any cryptography and accept anything when receiving.
    
    The security level and shared secret can be set per-socket, so that
    forwarding instances can re-encrypt and similar goodies.
    
    The libgcrypt library is used to calculate hashes, encrypt and decrypt,
    see <http://www.gnu.org/software/libgcrypt/>. I tested compiling the
    `network' plugin without libgcrypt afterwards, but haven't tested this
    much yet.
    
    Algorithms used are SHA-256 for signing and AES-256 in ECB mode /
    SHA-224 when encrypting. Also, SHA-256 is used to get the 32 byte key
    for AES-256 from the user-supplied secret.