tree 3beb1752c633b1bd304202d4a1f5323a49cba254
parent 786f781a5fdf178c8c73a02e84dee6467e321b72
author Philipp Maier <pmaier@sysmocom.de> 1615321705 +0100
committer laforge <laforge@osmocom.org> 1615534537 +0000

utils: add is_hex function to check hex strings

since we have added pySim-shell.py that has a lot of locations where the
user can enter hexadecimal data there is an increased need for input
validation. Lets add a central is_hex function that verifies hex
strings.

Change-Id: Ia29a13c9215357dd2adf141f2ef222c823f8456d
Related: OS#4963