do's Introduction

do

Get things done.

Experiment in programming a programming language without all the features of other tools.

Think of the script files as dumb sequential if statements.

KEYWORD	USAGE
`SYNC <url>`	Use libcurl to fetch a remote script & exec
`IF <cmd> ...`	A command with a zero exit code
`NOT`	Negates the previous IF to a non-zero exit code
`DO <cmd> ...`	A command to execute, optionally if the above `[N]IF` met the criteria
`SET %VAR% <str>`	Create a variable to the contents of the next node, all later occurances are replaced.
`NRDP <nagios> <token> <service> <hostname> <state:int> <output>`	Send passive data via Nagios Remote Data Processor.

todo

handle superfluous indenting characters
parse nested indenting
fetch remote scripts
variables / facts
parse nagios state OK|WARN|CRIT to ints for NRDP
global prefil %FQDN% variable

Example usage:

SET %MODES% "RELATED,ESTABLISHED"

DO echo "beginning!"

IF NOT rpm -q iptables
    DO yum install iptables -y

IF NOT iptables -C INPUT -m state --state %MODES% -j ACCEPT
    DO iptables -A INPUT -m state --state %MODES% -j ACCEPT

IF NOT iptables -C INPUT -i lo -j ACCEPT
    DO iptables -A INPUT -i lo -j ACCEPT

SYNC http://localhost/test.do

echo -e 'IF true\n\tDO echo it must be so!' > test.do
make
./do-run ./test.do

Building

ubuntu:

apt install -y make gcc libcurl4-openssl-dev --no-install-recommends
make

centos:

yum install -y make gcc libcurl-devel
make

arm (from x86):

docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
docker run --rm -ti -v $(pwd):/mnt arm64v8/centos /bin/bash
# follow centos build process

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