29 lines
532 B
Bash
Executable File
29 lines
532 B
Bash
Executable File
#!/bin/bash
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TEMP=$(mktemp)
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OUTPUT="$1"
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die() {
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echo "error: $@"
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[ -f "$TEMP" ] && rm "$TEMP"
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exit 1
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}
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[ -z "$OUTPUT" ] && {
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echo "usage: $0 OUTPUT"
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exit
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}
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curl -s "https://www.cloudflare.com/ips-v4" --output "$TEMP" || die "downloading failed"
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[ -s "$TEMP" ] || die "temp file is empty"
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sed -i 's/^/allow /g' "$TEMP"
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sed -i 's/$/;/g' "$TEMP"
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echo -e "satisfy all;\n$(cat "$TEMP")" > "$TEMP"
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echo "deny all;" >> "$TEMP"
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[ -f "$OUTPUT" ] && {
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rm "$OUTPUT" || die "failed to remove old file $OUTPUT"
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}
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mv "$TEMP" "$OUTPUT"
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