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Yuma123 README
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==What is Yuma123==
The purpose of the Yuma123 project is to provide an opensource YANG API in C and cli (yangcli) and server (netconfd) YANG automation enabled appications.
Branching from the last BSD licensed branch of the Yuma project the code has evolved in the following direction:
- a more mainstream build system based on autoconf/automake was added
- a number of critical bugs have been fixed
- new IETF standards support was added (ietf-nacm, ietf-system, etc.)
- support was added for new YANG extensions
- added to debian.org repositories

==Option 1: Debian installation==
===Option 1.1: Install from the yuma123 Debian repository (latest packages)===
 apt-get -y install netconfd yangcli
 apt-get update
 apt-get -y upgrade
 apt-get -y install software-properties-common
 add-apt-repository -s "deb http://yuma123.org/repos/apt/debian stable main"
 apt-get -y install wget gnupg
 wget -O - http://yuma123.org/repos/yuma123.gpg.key | apt-key add -
 apt-get update
 apt-get -y install netconfd yangcli

===Option 1.2: Install from the official repository===
 apt-get update
 apt-get -y install netconfd yangcli

==Option 2: Compilation and installation from source==
 #Build and runtime dependencies resolution for Debian stretch. Replace with appropriate command line if you are not using Debian.
 sudo apt-get install git autoconf gcc libtool libxml2-dev libssh2-1-dev make libncurses5-dev zlib1g-dev libreadline-dev libssl-dev
 git clone git://git.code.sf.net/p/yuma123/git yuma123-git
 cd yuma123-git
 autoreconf -i -f
 ./configure CFLAGS='-g -O0' CXXFLAGS='-g -O0' --prefix=/usr
 make
 sudo make install

#Build and runtime dependencies resolution for Cent OS 8.
sudo dnf group install "Development Tools"
sudo dnf -y install epel-release
sudo dnf install ncurses-devel readline-devel libxml2-devel zlib-devel openssl-devel libssh2-devel
git clone git://git.code.sf.net/p/yuma123/git yuma123-git
cd yuma123-git
autoreconf -i -f
./configure CFLAGS='-g -O0' CXXFLAGS='-g -O0' --prefix=/usr
make
sudo make install
 
==Configure and start==

 echo '<config/>' > /tmp/startup-cfg.xml
 /usr/sbin/netconfd --module=helloworld --startup=/tmp/startup-cfg.xml --log-level="debug4" --superuser="$USER"

The server is now started with the example helloworld module.

Tell sshd to listen on port 830. Add the following 2 lines to /etc/ssh/sshd_config:

 Port 830
 Subsystem netconf "/usr/sbin/netconf-subsystem --ncxserver-sockname=830@/tmp/ncxserver.sock"

For Cent OS 8 with SELINUX in enforcing mode
 sudo dnf install policycoreutils-python-utils
 sudo semanage port -a -t ssh_port_t -p tcp 830

Then on Debian:
 sudo /etc/init.d/ssh restart
or on Cent OS 8
 sudo service sshd restart
 
You can verify everything is OK:

 yangcli --user="$USER" --server=localhost
...
 yangcli vladimir@localhost> xget /helloworld
 
 RPC Data Reply 2 for session 2:
 
 rpc-reply {
   data {
     helloworld {
       message 'Hello World!'
     }
   }
 }

or

 xget /