doesnt work without root or sudo

[ausfestivus]

Morning,

Attempted to use this new script on an Ubuntu 16.04.5 LTS VM and it was producing zero output for smokeping. Debugged it down to the use of the -T switch with traceroute and the fact that the user smokeping runs as is just a normal user. User smokeping cant sudo and traceroute isnt setuid root by default.

Some more detailed notes:

• running as normal user

  ubuntu@jump00:~$ /usr/local/bin/tcpping.new -C -x 5 220.233.82.46 5060
  220.233.82.46 : - - - - -
  ubuntu@jump00:~$ /usr/local/bin/tcpping -C -x 5 220.233.82.46 5060
  220.233.82.46 : 13.097 14.740 14.146 13.350 13.738

• running with sudo

  ubuntu@jump00:~$ sudo /usr/local/bin/tcpping.new -C -x 5 220.233.82.46 5060
  220.233.82.46 : 13.349 12.796 13.697 13.730 13.162
  ubuntu@jump00:~$ sudo /usr/local/bin/tcpping -C -x 5 220.233.82.46 5060
  220.233.82.46 : 13.541 13.498 13.544 13.676 13.818

ubuntu@jump00:~$ /usr/local/bin/tcpping.new -z -C -x 5 220.233.82.46 5060
traceroute -T -f 255 -m 255 -q 1 -w 3  -p 5060 220.233.82.46
traceroute -T -f 255 -m 255 -q 1 -w 3  -p 5060 220.233.82.46

ubuntu@jump00:~$ traceroute -T -f 255 -m 255 -q 1 -w 3  -p 5060 220.233.82.46
You do not have enough privileges to use this traceroute method.
socket: Operation not permitted

[deajan]

Indeed. I could add a -s option which launched traceroute with sudo. You can then add bob ALL=(ALL) NOPASSWD: /usr/bin/traceroute to your sudoers file in order to allow the command to be used without needing a password when sudoing.

Good for you ?

[notjames]

At the very least, perform a check that will show an error message if permissions disallow the runtime to work. For instance, I just had this happen to me and I had to run some debugging to see why iwas getting blank, but obvious output:

~/projects/src/tcpping$ tcpping 8.8.8.8 53

^C
~/projects/src/tcpping$ 

Just submitted a PR to error if sudo us required.

[deajan]

Issue resolved by @notjames