ufw-tools/sup

#!/usr/bin/env bash
# Copyright (c) 2012 fbt <fbt@fleshless.org>
#
# About:
# A simple upload script for ZFH (http://zerofiles.org)

cfg_url_regex='^[A-Za-z]([A-Za-z0-9+.-]+)?://.+'
cfg_tmp_dir="/tmp/$USER/sup"; TEMPDIR="$cfg_tmp_dir"
cfg_script_url='https://zfh.so/upload'
cfg_screenshot_ext='png'

[[ -f $HOME/.suprc ]] && { source $HOME/.suprc; }

sup.msg() { echo "[sup] $1"; }
sup.err() { sup.msg "(error) $1" >&2; }

sup.usage() {
	echo "Usage: `basename $0` [-RsF] [-D num] [file/url]"
}

sup.env() {
	for i in "$cfg_tmp_dir"; do
		[[ -d "$i" ]] || { mkdir -p "$i"; }
	done
}

sup.upload() {
	curl -F file="@$file" \
		-F upload_mode='api' \
		-F flag_private="$flag_private" \
		-F secret="$secret" \
		-F submit="" \
		"$cfg_script_url" -sL -A 'zerofiles.org upload script' || { return 1; }

	[[ "$flag_rm" ]] && { rm "$file"; }

	return 0
}

sup.mktemp() {
	>"$1" || {
		sup.err "Cannot create $1!"
		return 1
	}

	echo "$1"
}

sup.scrot() {
	local tmp_file_name

	[[ "$scrot_exec" ]] || { scrot_exec=`which scrot`; }
	[[ "$scrot_exec" ]] || {
		sup.err "Please install scrot to use this function"
		return 1
	}

	[[ "$flag_scrot_fullscreen" ]] || { scrot_args+=( '-s' ); }
	[[ "$cfg_scrot_delay" ]] && { scrot_args+=( "-d $cfg_scrot_delay" ); }

	tmp_file_name="$(sup.mktemp "${cfg_tmp_dir}" "${cfg_screenshot_ext}")"

	scrot "${scrot_args[@]}" "${cfg_tmp_dir}/$tmp_file_name" || {
		sup.err "Failed to take a screenshot."
		return 1
	}

	echo "${cfg_tmp_dir}/$tmp_file_name"
}

sup.exclude() {
	[[ "$2" ]] && { echo "$1"; return 1; }
	return 0
}

sup.if_url() { echo "$1" | grep -oE "$cfg_url_regex" &>/dev/null; }

sup.mktemp() {
	local tmp_file_name tmp_file_name_extra="$2" tmp_dir="$1" 

	[[ -d "$tmp_dir" ]] || {
		sup.err "${tmp_dir} does not exist or is not a directory."
		return 1
	}

	until [[ ! -e "${tmp_dir}/${tmp_file_name}" ]]; do
		tmp_file_name="${RANDOM}${RANDOM}${tmp_file_name_extra}"
	done

	echo "${tmp_dir}/${tmp_file_name}"
}

main() {
	while [[ "$1" ]]; do
		case "$1" in
			-p|--private) flag_private='true';;
			-R|--remove-file) flag_rm='1';;
			
			-s|--screenshot) flag_scrot='1';;
			-F|--fullscreen) flag_scrot_fullscreen='1';;
			-D|--screenshot-delay) cfg_scrot_delay="$2"; shift;;
			
			-h|--help|--usage) sup.usage; return;;

			--) break;;

			*) args+=( "$1" );;
		esac
		shift
	done

	sup.env

	if [[ "$flag_scrot" ]]; then
		file="$(sup.scrot)" || { return 1; }
	else
		target="${args[0]}"; [[ "$target" ]] || { sup.usage; exit 1; }

		sup.if_url "$target" && {
			file=`sup.mktemp "$cfg_tmp_dir"`

			curl -s "$target" > "$file" || {
				sup.err "Could not download file."
				return 1
			}
		}
	fi

	sup.upload
}

main "$@"