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31 lines
935 B
Bash
31 lines
935 B
Bash
#!/bin/bash
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# Display help message
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if [[ "$1" == "-h" || "$1" == "--help" ]]; then
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echo "usage: $(basename $0) <input_string>"
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echo "Outputs a randomly generated IP address and port number based on the MD5 hash of the input string."
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echo ""
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exit 0
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fi
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# Check that input string is provided
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if [ -z "$1" ]; then
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echo "error: input string not provided."
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echo "usage: $(basename $0) <input_string>"
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echo ""
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exit 1
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fi
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input_str="$1"
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# Hash the input string using MD5 and extract the first 4 bytes
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hash_bytes="$(echo -n $input_str | md5sum | cut -d' ' -f1 | head -c 8)"
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# Create an IP address in the 127.0.0.0/8 range using the first 3 bytes of the hash
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ip="127.$(printf '%d.%d.%d' 0x${hash_bytes:0:2} 0x${hash_bytes:2:2} 0x${hash_bytes:4:2})"
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# Use the last 2 bytes of the hash to generate a port number in the range 1024-65535
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port="$((0x${hash_bytes:6:2} % (65535 - 1024) + 1024))"
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echo "$ip:$port"
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