[COMMON] Fix ${!name} bashisms
pointed out by checkbashisms.
Note this kind of indirections can only be replaced directly in POSIX
by commands using eval.
Security risks must be evaluated for each context where eval is called.
For a safe use, the context must ensure that only a limited number of
possible constrainted values are passed to eval.
https://mywiki.wooledge.org/Bashism#Parameter_Expansions
https://mywiki.wooledge.org/BashFAQ/006#Indirection
Issue-ID: OOM-264
Signed-off-by: Guillaume Lambert <guillaume.lambert@orange.com>
Change-Id: Id27f3ffd1ddb092a9c038d3a45d9e3278720eb62
diff --git a/kubernetes/common/mariadb-init/resources/config/db_init.sh b/kubernetes/common/mariadb-init/resources/config/db_init.sh
index fa4b007..f130bb5 100755
--- a/kubernetes/common/mariadb-init/resources/config/db_init.sh
+++ b/kubernetes/common/mariadb-init/resources/config/db_init.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+
{{/*
# Copyright © 2019 Orange
# Copyright © 2020 Samsung Electronics
@@ -22,8 +23,15 @@
while read DB ; do
USER_VAR="MYSQL_USER_${DB^^}"
PASS_VAR="MYSQL_PASSWORD_${DB^^}"
- USER=${!USER_VAR}
- PASS=`echo -n ${!PASS_VAR} | sed -e "s/'/''/g"`
+{{/*
+ # USER=${!USER_VAR}
+ # PASS=`echo -n ${!PASS_VAR} | sed -e "s/'/''/g"`
+ # eval replacement of the bashism equivalents above might present a security issue here
+ # since it reads content from DB values filled by helm at the end of the script.
+ # These possible values has to be constrainted and/or limited by helm for a safe use of eval.
+*/}}
+ eval USER=\$$USER_VAR
+ PASS=$(eval echo -n \$$PASS_VAR | sed -e "s/'/''/g")
MYSQL_OPTS=( -h ${DB_HOST} -P ${DB_PORT} -uroot -p${MYSQL_ROOT_PASSWORD} )
echo "Creating database ${DB} and user ${USER}..."