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Refactor conversion to hex

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This commit is contained in:
dteske 2016-02-12 01:12:44 +00:00
parent 4e81193026
commit 23f1e857eb
2 changed files with 14 additions and 26 deletions
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20
share/examples/jails/jib
View File

@ -214,25 +214,19 @@ derive_mac()
# unique value preventing conflict.
#
__iface_devid=$( ifconfig $__iface ether | awk '/ether/,$0=$2' )
__new_devid=${__iface_devid#??:??:??}
# :II:II:II => S:II:II:II
# ??:??:??:II:II:II
__new_devid=${__iface_devid#??:??:??} # => :II:II:II
# => :SS:SS:II:II:II
__num=$( set -- `echo -n "$__name" | sum` && echo $1 )
__new_devid=$( printf %x $(( $__num & 15 )) )$__new_devid
# S:II:II:II => :SS:II:II:II
__num=$(( $__num >> 4 ))
__new_devid=:$( printf %x $(( $__num & 15 )) )$__new_devid
# :SS:II:II:II => S:SS:II:II:II
__num=$(( $__num >> 4 ))
__new_devid=$( printf %x $(( $__num & 15 )) )$__new_devid
# S:SS:II:II:II => :SS:SS:II:II:II
__new_devid=:$( printf %x $(( $__num & 15 )) )$__new_devid
# :SS:SS:II:II:II => P:SS:SS:II:II:II
__new_devid=$( printf :%02x:%02x \
$(( $__num >> 8 & 255 )) $(( $__num & 255 )) )$__new_devid
# => P:SS:SS:II:II:II
case "$__iface_devid" in
?2:*) __new_devid=a$__new_devid __new_devid_b=e$__new_devid ;;
?[Ee]:*) __new_devid=2$__new_devid __new_devid_b=6$__new_devid ;;
*) __new_devid=2$__new_devid __new_devid_b=e$__new_devid
esac
# P:SS:SS:II:II:II => NP:SS:SS:II:II:II
# => NP:SS:SS:II:II:II
__new_devid=$( printf %x $(( $__mac_num & 15 )) )$__new_devid
__new_devid_b=$( printf %x $(( $__mac_num & 15 )) )$__new_devid_b

20
share/examples/jails/jng
View File

@ -216,25 +216,19 @@ derive_mac()
# unique value preventing conflict.
#
__iface_devid=$( ifconfig $__iface ether | awk '/ether/,$0=$2' )
__new_devid=${__iface_devid#??:??:??}
# :II:II:II => S:II:II:II
# ??:??:??:II:II:II
__new_devid=${__iface_devid#??:??:??} # => :II:II:II
# => :SS:SS:II:II:II
__num=$( set -- `echo -n "$__name" | sum` && echo $1 )
__new_devid=$( printf %x $(( $__num & 15 )) )$__new_devid
# S:II:II:II => :SS:II:II:II
__num=$(( $__num >> 4 ))
__new_devid=:$( printf %x $(( $__num & 15 )) )$__new_devid
# :SS:II:II:II => S:SS:II:II:II
__num=$(( $__num >> 4 ))
__new_devid=$( printf %x $(( $__num & 15 )) )$__new_devid
# S:SS:II:II:II => :SS:SS:II:II:II
__new_devid=:$( printf %x $(( $__num & 15 )) )$__new_devid
# :SS:SS:II:II:II => P:SS:SS:II:II:II
__new_devid=$( printf :%02x:%02x \
$(( $__num >> 8 & 255 )) $(( $__num & 255 )) )$__new_devid
# => P:SS:SS:II:II:II
case "$__iface_devid" in
?2:*) __new_devid=a$__new_devid __new_devid_b=e$__new_devid ;;
?[Ee]:*) __new_devid=2$__new_devid __new_devid_b=6$__new_devid ;;
*) __new_devid=2$__new_devid __new_devid_b=e$__new_devid
esac
# P:SS:SS:II:II:II => NP:SS:SS:II:II:II
# => NP:SS:SS:II:II:II
__new_devid=$( printf %x $(( $__mac_num & 15 )) )$__new_devid
__new_devid_b=$( printf %x $(( $__mac_num & 15 )) )$__new_devid_b