46 lines
1.6 KiB
Bash
Executable File
46 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
|
|
set -e
|
|
|
|
# export these from another file, or set them here if you are lazy
|
|
# http_upload_url='https://example.com/up/'
|
|
# http_upload_hmac_key='this is your secret string'
|
|
|
|
[ -z "$http_upload_url" ] && echo "variable http_upload_url must be set, exiting..." 1>&2 && exit 1
|
|
[ -z "$http_upload_hmac_key" ] && echo "variable http_upload_hmac_key must be set, exiting..." 1>&2 && exit 1
|
|
[ -z "$http_upload_file_size_limit" ] && http_upload_file_size_limit=$((100 * 1024 * 1024)) # bytes, default to 100 * 1024 * 1024 = 100 MB
|
|
|
|
encrypt=0
|
|
[ $http_upload_encrypt -eq 1 2>/dev/null ] && encrypt=1 || true
|
|
[ "$1" == '-e' ] && encrypt=1 && shift
|
|
[ "$2" == '-e' ] && encrypt=1
|
|
|
|
file_to_upload="$1"
|
|
|
|
base_name="$(basename "$file_to_upload")"
|
|
|
|
tag=''
|
|
if [ $encrypt -eq 1 ]
|
|
then
|
|
iv_key="$(openssl rand -hex 48)"
|
|
orig_file_to_upload="$file_to_upload"
|
|
file_to_upload="$(mktemp)"
|
|
aesgcm "$iv_key" enc < "$orig_file_to_upload" > "$file_to_upload"
|
|
tag="#$iv_key"
|
|
fi
|
|
|
|
file_size="$(stat -c %s "$file_to_upload")"
|
|
|
|
[ $file_size -gt $http_upload_file_size_limit ] && echo "file size $file_size greater than limit of $http_upload_file_size_limit, exiting..." 1>&2 && exit 1
|
|
|
|
uuid="$(uuidgen 2>/dev/null || cat /proc/sys/kernel/random/uuid 2>/dev/null || cat /compat/linux/proc/sys/kernel/random/uuid)"
|
|
|
|
hmac_secret="$(echo -n "${uuid}/${base_name} $file_size" | openssl dgst -sha256 -hmac "$http_upload_hmac_key" -r | awk '{ print $1 }')"
|
|
|
|
get_url="${http_upload_url}${uuid}/${base_name}"
|
|
|
|
curl -f -T "$file_to_upload" "${get_url}?v=${hmac_secret}"
|
|
|
|
echo "${get_url}${tag}"
|
|
|
|
[ $encrypt -eq 1 ] && rm "$file_to_upload" || true
|