Free bsnmp software for linux

bsnmp is a miniSNMP daemon. For a couple of projects that involved controlling software on a couple of machines from a single controlling machine I decided to use SNMP. After looking at several available SNMP implementations I started to implement my own SNMP stuff, because what was available was not really what I needed (for several reasons). The result of this work is bsnmp.

bsnmp consists of the following pieces:
a library libbsnmp that includes ASN.1 handling, the SNMP protocol version V1 and V2C and a number of helper stuff to simplify writing of SNMP agents and clients.
the gensnmptree tool that generates the C- and H-files from an object hierarchy description (.def file).
the gensnmpdef tool that generates an initial .def file from a MIB. This requires the libsmi library.
bsnmpd - the SNMP daemon.
snmp_mibII - an implementation of the standard MIB-II sub-tree.
snmp_ntp - a partial implementation of the experimental NTP MIB.

The bsnmpd daemon implements just the bare minimum that is needed for such a daemon: the system group, parts of the SNMP group and a private tree that does the following:

handling of loadable modules. This allows loading/unloading parts of the tree at runtime or configuration time.
handling of communities. A table that allows loaded modules to create new communities at run-time (ILMI is a consumer of this). This table can be disabled for obvious reasons.
handling trap destinations for V1.
several configuration parameters like the protocol versions to handle, buffer sizes and so on.
tables that manage the UDP and local unix ports the daemon is listening on.
statistics and debugging
All real functionality is implemented via loadable modules and hence the daemon can be used for remote-control functions that have nothing to do with network management.

bsnmp-regex is a module for bsnmpd which allows creation of counters from log files, program output or other text data.
The counters use regular expressions to count the number of matches, or parse out specific text/numbers. The resulting data can then be queried or graphed with the usual SNMP tools.
Installation:
The simplest way to compile this package is:
1. `cd to the directory containing the packages source code and type `./configure to configure the package for your system. If youre using `csh on an old version of System V, you might need to type `sh ./configure instead to prevent `csh from trying to execute `configure itself.
Running `configure takes awhile. While running, it prints some messages telling which features it is checking for.
2. Type `make to compile the package.
3. Optionally, type `make check to run any self-tests that come with the package.
4. Type `make install to install the programs and any data files and documentation.
5. You can remove the program binaries and object files from the source code directory by typing `make clean. To also remove the files that `configure created (so you can compile the package for a different kind of computer), type `make distclean. There is also a `make maintainer-clean target, but that is intended mainly for the packages developers. If you use it, you may have to get all sorts of other programs in order to regenerate files that came with the distribution.
Enhancements:
- A crash which occurred when extra long lines were parsed was fixed.
- Other minor fixes were made.