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Explain iiab_var_value() bash function mechanics, in iiab-gen-iptables

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A Holt 2021-08-18 02:44:59 -04:00 committed by GitHub
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roles/network/templates/gateway/iiab-gen-iptables
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@ -41,9 +41,9 @@ IPTABLES_DATA=/etc/sysconfig/iptables
# https://github.com/iiab/maps/blob/master/osm-source/pages/viewer/scripts/iiab-install-map-region#L25-L34 # https://github.com/iiab/maps/blob/master/osm-source/pages/viewer/scripts/iiab-install-map-region#L25-L34
# https://github.com/iiab/iiab/blob/master/iiab-support READS AND WRITES, INCL NON-BOOLEAN (openvpn_handle) # https://github.com/iiab/iiab/blob/master/iiab-support READS AND WRITES, INCL NON-BOOLEAN (openvpn_handle)
# "awk '{print $2}'" almost works, but: (1) Fails to remove outer quotes. # "awk '{print $2}'" almost works, but: (1) Fails to remove outer quotes, and
# (2) Chops up Ansible vars containing multiple words w/o surrounding quotes. # (2) Chops up Ansible vars containing multiple words w/o surrounding quotes.
# SO: sed is used instead, to emulate Ansible's parsing of vars from .yml # So: sed is used instead, to emulate Ansible's parsing of vars from .yml
iiab_var_value() { iiab_var_value() {
v1=$(grep "^$1:\s" /opt/iiab/iiab/vars/default_vars.yml | sed "s/^$1:\s\+//; s/#.*//; s/\s*$//; s/^\(['\"]\)\(.*\)\1$/\2/") v1=$(grep "^$1:\s" /opt/iiab/iiab/vars/default_vars.yml | sed "s/^$1:\s\+//; s/#.*//; s/\s*$//; s/^\(['\"]\)\(.*\)\1$/\2/")
v2=$(grep "^$1:\s" /etc/iiab/local_vars.yml | sed "s/^$1:\s\+//; s/#.*//; s/\s*$//; s/^\(['\"]\)\(.*\)\1$/\2/") v2=$(grep "^$1:\s" /etc/iiab/local_vars.yml | sed "s/^$1:\s\+//; s/#.*//; s/\s*$//; s/^\(['\"]\)\(.*\)\1$/\2/")