29 lines
1.2 KiB
Bash
29 lines
1.2 KiB
Bash
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#!/bin/sh
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set -e
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# export these from another file, or set them here if you are lazy
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# http_upload_url='https://example.com/up/'
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# http_upload_hmac_key='this is your secret string'
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[ -z "$http_upload_url" ] && echo "variable http_upload_url must be set, exiting..." 1>&2 && exit 1
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[ -z "$http_upload_hmac_key" ] && echo "variable http_upload_hmac_key must be set, exiting..." 1>&2 && exit 1
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[ -z "$http_upload_file_size_limit" ] && http_upload_file_size_limit=$((100 * 1024 * 1024)) # bytes, default to 100 * 1024 * 1024 = 100 MB
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file_to_upload="$1"
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base_name="$(basename "$file_to_upload")"
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file_size="$(stat -c %s "$file_to_upload")"
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[ $file_size -gt $http_upload_file_size_limit ] && echo "file size $file_size greater than limit of $http_upload_file_size_limit, exiting..." 1>&2 && exit 1
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uuid="$(uuidgen 2>/dev/null || cat /proc/sys/kernel/random/uuid 2>/dev/null || cat /compat/linux/proc/sys/kernel/random/uuid)"
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hmac_secret="$(echo -n "${uuid}/${base_name} $file_size" | openssl dgst -sha256 -hmac "$http_upload_hmac_key" -r | awk '{ print $1 }')"
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get_url="${http_upload_url}${uuid}/${base_name}"
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curl -f -T "$file_to_upload" "${get_url}?v=${hmac_secret}"
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echo "$get_url"
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