84 lines
1.8 KiB
Text
84 lines
1.8 KiB
Text
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#!/usr/bin/env bash
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# our tiny drop in fake version of curl
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# needs to support
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# curl -V
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# curl -L -s --user-agent foo --write-out "%{http_code}" -o <path> -- uri
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SOURCE_FILE=fake-curls
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REPEAT_FILE=already-served
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POSITIONAL_ARGS=()
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while [[ $# -gt 0 ]]; do
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case $1 in
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-V)
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VERSIONINFO=YES
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shift # past argument
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;;
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-L|-s|--)
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shift # past argument
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;;
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-o|--extension)
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OUTPUT="$2"
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shift # past argument
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shift # past value
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;;
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--user-agent|--write-out)
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shift # past argument
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shift # past value
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;;
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-*|--*)
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echo "Unknown option $1"
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exit 1
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;;
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*)
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POSITIONAL_ARGS+=("$1") # save positional arg
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shift # past argument
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;;
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esac
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done
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set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters
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if [ "$VERSIONINFO" = "YES" ]; then
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echo "curl 0.0.0 (dune-fake)"
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exit 0
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fi
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# read the offset from the URL
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PORT_OFFSET=$(echo "$POSITIONAL_ARGS" | grep -Eo ':[0-9]+' | grep -o '[0-9]*')
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POSSIBLE_FILES=$(wc -l < "$SOURCE_FILE")
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write_out() {
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# --write_out "${http_code}" does not write a newline
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echo -n \"$1\"
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}
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>&2 echo '$POSSIBLE_FILES' \""$POSSIBLE_FILES"\" '$PORT_OFFSET' \""$PORT_OFFSET"\"
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if [ ! -f "$REPEAT_FILE" ]; then
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file_already_served=false
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else
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if grep "^$PORT_OFFSET\$" "$REPEAT_FILE" 2>/dev/null 1>&2 ; then
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file_already_served=true
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else
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file_already_served=false
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fi
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fi
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>&2 echo File already served: $file_already_served
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if [ $PORT_OFFSET -gt $POSSIBLE_FILES ] || [ $file_already_served = true ]; then
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>&2 echo "Failing the download"
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write_out 404
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else
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>&2 echo "Succeeding the download"
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# read the line signified by the port from the file
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INPUT=$(head -n "$PORT_OFFSET" "$SOURCE_FILE" | tail -n 1)
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echo "$PORT_OFFSET" >> "$REPEAT_FILE"
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cp "$INPUT" "$OUTPUT"
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write_out 200
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fi
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