If you followed the instructions outlined in the first article, you are still limited by the USB cable and the sdb utility if you want to connect to your phone, so let’s install OpenSSH server so that we can connect remotely into it. You are supposed to be already connected via a WiFi network on your phone, if not, check out the previous article.
With Tizen, there is no such thing as easy-mode. There is no openssh rpm package in the 2.3.1 repository, so we have to go back to the 2.3 one and pull the required packages. Download the rpm and install it into your phone:
sdb root on sdb push openssh-server-5.3p1-1.2.armv7l.rpm /home sdb shell sh-4.1# rpm -ivh /home/openssh-server-5.3p1-1.2.armv7l.rpm --force --nodeps
if you try to start the SSH server now, either via service ssh start or systemctl start sshd, surprise, it won’t work. First option won’t work because there is no init script for sshd inside /etc/init.d and both won’t work because the ssh host keys aren’t setup automatically by the package, due to a missing utility inside the rpm. So, let’s do that manually:
sh-4.1# ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): /etc/ssh/ssh_host_rsa_key Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /etc/ssh/ssh_host_rsa_key. Your public key has been saved in /etc/ssh/ssh_host_rsa_key.pub. sh-4.1# ssh-keygen -t dsa Generating public/private dsa key pair. Enter file in which to save the key (/root/.ssh/id_dsa): /etc/ssh/ssh_host_dsa_key Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /etc/ssh/ssh_host_dsa_key. Your public key has been saved in /etc/ssh/ssh_host_dsa_key.pub.
When asked where to save the two keys, make sure you fill the correct path and file name, /etc/ssh/ssh_host_rsa_key and /etc/ssh/ssh_host_dsa_key. Also, put the code below inside a sshd.service file.
[Unit] Description=SSHD server Daemon After=syslog.target network.target Requires=connman.service [Service] ExecStartPre=/bin/mkdir -p /var/run/sshd ExecStart=/usr/sbin/sshd -D ExecReload=/bin/kill -HUP $MAINPID [Install] WantedBy=multi-user.target
Again, this systemd unit is chained correctly to start after conman, that starts after wlan-1 and wlan-2. Install the unit file into your phone, enable and start it.
sdb root on sdb push sshd.service /etc/systemd/system/ sdb shell sh-4.1# systemctl enable sshd sh-4.1# systemctl start sshd
The OpenSSH server should start and run correctly now. You can check the IP address to which you need to connect from the ifconfig command.
sh-4.1# ifconfig wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.0.9 netmask 255.255.255.0 broadcast 192.168.0.255
Fire up your favorite SSH client and connect to that IP, username is root, there is no password and you should be greeted by Tizen OS. If you issue a uname command, you should see something similar to this:
sh-4.1# uname -a Linux TRATS2 3.0.101-trats2_defconfig #1-Tizen SMP PREEMPT Mon Sep 21 04:09:05 UTC 2015 armv7l GNU/Linux
If you want to check out the process list, you will notice lots of unneeded junk (well, needed for a phone, not for a home development server, and that’s what your RD-PQ is going to be. But that, in the next article.
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