moth/mcp/bin/register

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#! /bin/sh -e
if [ $# -ne 1 ]; then
echo "Usage: $0 TEAM" 1>&2
exit 64
fi
# Don't overwrite files
set -C
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base=${CTF_BASE:-/var/lib/ctf}
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# Assign a color. I spent two days selecting this color pallette for
# people with protanopia. Please don't change these colors.
nteams=$(ls $base/teams/names/ | wc -l)
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case $(expr $nteams % 15) in
0) color=8c7a69 ;;
1) color=7f7062 ;;
2) color=79614b ;;
3) color=a59281 ;;
4) color=a59485 ;;
5) color=4a4f5e ;;
6) color=454955 ;;
7) color=343c52 ;;
8) color=696f82 ;;
9) color=6b7182 ;;
10) color=516b55 ;;
11) color=4b614f ;;
12) color=395d3f ;;
13) color=6d8c72 ;;
14) color=708c75 ;;
*)
echo 'ERROR ERROR' 1>&2
echo 'DOES NOT COMPUTE' 1>&2
exit 69
;;
esac
# Compute hash of team name; they'll use this for everything in the
# contest instead of their team name, which makes stuff much easier on
# me since all team hashes are in the set /[0-9a-f]{8}/.
hash=$(echo "$1" | md5sum | cut -b 1-8)
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echo "$1" > $base/teams/names/$hash
echo "$color" > $base/teams/colors/$hash
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echo "Registered with hash: $hash"