init

.luacheckrc

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+unused_args = false
+
+read_globals = {
+	"minetest",
+	"ItemStack"
+}

LICENSE

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+MIT License
+
+Copyright (c) 2020 FaceDeer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+## Bulletin boards
+
+This mod adds global bulletin boards to Minetest. These are boards where players can post short notes for other players to see, at a nominal cost.
+
+| ![](screenshot.png) | ![](screenshot_bulletin.png) |
+
+Each board can hold up to 56 bulletins (in an 8 by 7 grid), with each bulletin having a title and an icon that can be set by the player posting it. Once the bulletin board nears capacity, older bulletins will start being culled from the board to make room for new bulletins. They will be culled by preference starting with the bulletins belonging to the players who have the most bulletins currently posted, followed by the oldest bulletin belonging to those players.
+
+So for example, if Alice has 1 bulletin on the board, Bob has 2 bulletins on the board, and Collin has 2 bulletins on the board, then when it comes time to cull a bulletin the oldest one belonging to either Bob or Collin will be culled. If that happens to be Bob's, then next time it's time to cull Alice will have 1, Bob will have 1, and Collin will have 2, so the oldest of Collin's bulletins will be culled. This ordering is done to try to balance things out fairly - players that hog the board with multiple bulletins will have their bulletins culled more often, but everyone's single most recent bulletin will stick around as long as possible.
+
+Bulletin boards can have a cost associated with posting. If the player has the cost (an item stack) in their inventory, they can post and the cost will be automatically deducted.
+
+Boards are "global", in the sense that all instances of a given type of board will have the same content regardless of where they are in the world. This can make them useful as a means of communication over distance as well as time, serving as a sort of public post office.

init.lua

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+-- TODO:
+-- There's potential race conditions in here if two players have the board open
+-- and a culling happens or they otherwise diddle around with it. For now just
+-- make sure it doesn't crash
+
+local S = minetest.get_translator(minetest.get_current_modname())
+
+local bulletin_max = 7*8
+
+local culling_interval = 86400 -- one day in seconds
+local culling_min = bulletin_max - 12 -- won't cull if there are this many or fewer bulletins
+local adminpriv = minetest.settings:get("bulletin_boards.adminpriv") or "server"
+
+local bulletin_boards = {}
+bulletin_boards.player_state = {}
+bulletin_boards.board_def = {}
+
+local path = minetest.get_worldpath() .. "/bulletin_boards.lua"
+local f, _ = loadfile(path);
+if f then
+	bulletin_boards.global_boards = f()
+else
+	bulletin_boards.global_boards = {}
+end
+
+local function save_boards()
+	local file, e = io.open(path, "w");
+	if not file then
+		return error(e);
+	end
+	file:write(minetest.serialize(bulletin_boards.global_boards))
+	file:close()
+end
+
+local max_text_size = 5000 -- half a book
+local max_title_size = 60
+local short_title_size = 12
+
+-- gets the bulletins currently on a board
+-- and other persisted data
+local function get_board(name)
+	local board = bulletin_boards.global_boards[name]
+	if board then
+		return board
+	end
+	board = {}
+	board.last_culled = minetest.get_gametime()
+	bulletin_boards.global_boards[name] = board
+	return board
+end
+
+-- for incrementing through the bulletins on a board
+local function find_next(board, start_index)
+	local index = start_index + 1
+	while index ~= start_index do
+		if board[index] then
+			return index
+		end
+		index = index + 1
+		if index > bulletin_max then
+			index = 1
+		end
+	end
+	return index
+end
+local function find_prev(board, start_index)
+	local index = start_index - 1
+	while index ~= start_index do
+		if board[index] then
+			return index
+		end
+		index = index - 1
+		if index < 1 then
+			index = bulletin_max
+		end
+	end
+	return index
+end
+
+-- Groups bulletins by count-per-player, then picks the oldest bulletin from the group with the highest count.
+
+-- eg, if A has 1 bulletin, B has 2 bulletins, and C has 2 bulletins, then this will pick the oldest
+-- bulletin from (B and C)'s bulletins. Returns index and timestamp, or nil if there's nothing.
+local function find_most_cullable(board_name)
+	local board = get_board(board_name)
+	local player_count = {}
+	local max_count = 0
+	local total = 0
+	for i = 1, bulletin_max do
+		 local bulletin = board[i]
+		 if bulletin then
+			total = total + 1
+			local player_name = bulletin.owner
+			local count = (player_count[player_name] or 0) + 1
+			max_count = math.max(count, max_count)
+			player_count[player_name] = count
+		 end
+	end
+
+	if total <= culling_min then
+		return
+	end
+
+	local max_players = {}
+	for player_name, count in pairs(player_count) do
+		if count == max_count then
+			max_players[player_name] = true
+		end
+	end
+
+	local most_cullable_index
+	local most_cullable_timestamp
+	for i = 1, bulletin_max do
+		local bulletin = board[i]
+		if bulletin and max_players[bulletin.owner] then
+			if bulletin.timestamp <= (most_cullable_timestamp or bulletin.timestamp) then
+				most_cullable_timestamp = bulletin.timestamp
+				most_cullable_index = i
+			end
+		end
+	end
+
+	return most_cullable_index, most_cullable_timestamp
+end
+
+-- safe way to get the description string of an item, in case it's not registered
+local function get_item_desc(stack)
+	local stack_def = stack:get_definition()
+	if stack_def then
+		return stack_def.description
+	end
+	return stack:get_name()
+end
+
+-- shows the base board to a player
+local function show_board(player_name, board_name)
+	local formspec = {}
+	local board = get_board(board_name)
+	local current_time = minetest.get_gametime()
+
+	local intervals = (current_time - board.last_culled)/culling_interval
+	local cull_count, remaining_cull_time = math.modf(intervals)
+	while cull_count > 0 do
+		local cull_index = find_most_cullable(board_name)
+		if cull_index then
+			board[cull_index] = nil
+			cull_count = cull_count - 1
+		else
+			cull_count = 0
+		end
+	end
+	board.last_culled = current_time - math.floor(culling_interval * remaining_cull_time)
+
+	local def = bulletin_boards.board_def[board_name]
+	local desc = minetest.formspec_escape(def.desc)
+	local tip
+	if def.cost then
+		local stack = ItemStack(def.cost)
+		tip = S("Post your bulletin here for the cost of @1 @2", stack:get_count(), get_item_desc(stack))
+		desc = desc .. S(", Cost: @1 @2", stack:get_count(), get_item_desc(stack))
+	else
+		tip = S("Post your bulletin here")
+	end
+
+	formspec[#formspec+1] = "size[8,8.5]"
+	.. "container[0,0]"
+	.. "label[0.0,-0.25;"..desc.."]"
+	.. "container_end[]"
+	.. "container[0,0.5]"
+	local i = 0
+	for y = 0, 6 do
+		for x = 0, 7 do
+			i = i + 1
+			local bulletin = board[i] or {}
+			local short_title = bulletin.title or ""
+			--Don't bother triming the title if the trailing dots would make it longer
+			if #short_title > short_title_size + 3 then
+				short_title = short_title:sub(1, short_title_size) .. "..."
+			end
+			local img = bulletin.icon or ""
+
+			formspec[#formspec+1] =
+				"image_button["..x..",".. y*1.2 ..";1,1;"..img..";button_"..i..";]"
+				.."label["..x..","..y*1.2-0.35 ..";"..minetest.formspec_escape(short_title).."]"
+			if bulletin.title and bulletin.owner and bulletin.timestamp then
+				local days_ago = math.floor((current_time-bulletin.timestamp)/86400)
+				formspec[#formspec+1] = "tooltip[button_"..i..";"
+					..S("@1\nPosted by @2\n@3 days ago", minetest.formspec_escape(bulletin.title), bulletin.owner, days_ago).."]"
+			else
+				formspec[#formspec+1] = "tooltip[button_"..i..";"..tip.."]"
+			end
+		end
+	end
+	formspec[#formspec+1] = "container_end[]"
+
+	bulletin_boards.player_state[player_name] = {board=board_name}
+	minetest.show_formspec(player_name, "bulletin_boards:board", table.concat(formspec))
+end
+
+-- shows a specific bulletin on a board
+local function show_bulletin(player, board_name, index)
+	local board = get_board(board_name)
+	local def = bulletin_boards.board_def[board_name]
+	local icons = def.icons
+	local bulletin = board[index] or {}
+	local player_name = player:get_player_name()
+	bulletin_boards.player_state[player_name] = {board=board_name, index=index}
+
+	local tip
+	local has_cost
+	if def.cost then
+		local stack = ItemStack(def.cost)
+		local player_inventory = minetest.get_inventory({type="player", name=player_name})
+		tip = S("Post bulletin with this icon at the cost of @1 @2", stack:get_count(), get_item_desc(stack))
+		has_cost = player_inventory:contains_item("main", stack)
+	else
+		tip = S("Post bulletin with this icon")
+		has_cost = true
+	end
+
+	local admin = minetest.check_player_privs(player, adminpriv)
+
+	local formspec = {"size[8,8]"
+		.."button[0.2,0;1,1;prev;"..S("Prev").."]"
+		.."button[6.65,0;1,1;next;"..S("Next").."]"}
+	local esc = minetest.formspec_escape
+	if ((bulletin.owner == nil or bulletin.owner == player_name) and has_cost) or admin then
+		formspec[#formspec+1] =
+			"field[1.5,0.75;5.5,0;title;"..S("Title:")..";"..esc(bulletin.title or "").."]"
+			.."textarea[0.5,1.15;7.5,7;text;"..S("Contents:")..";"..esc(bulletin.text or "").."]"
+			.."label[0.3,7;"..S("Post:").."]"
+		for i, icon in ipairs(icons) do
+			formspec[#formspec+1] = "image_button[".. i*0.75-0.5 ..",7.35;1,1;"..icon..";save_"..i..";]"
+			.."tooltip[save_"..i..";"..tip.."]"
+		end
+		formspec[#formspec+1] = "image_button[".. (#icons+1)*0.75-0.25 ..",7.35;1,1;bulletin_boards_delete.png;delete;]"
+			.."tooltip[delete;"..S("Delete this bulletin").."]"
+			.."label["..(#icons+1)*0.75-0.25 ..",7;"..S("Delete:").."]"
+	elseif bulletin.owner then
+		formspec[#formspec+1] =
+			"label[1.4,0.5;"..S("Posted by @1", bulletin.owner).."]"
+			.."tablecolumns[color;text]"
+			.."tableoptions[background=#00000000;highlight=#00000000;border=false]"
+			.."table[1.35,0.25;5,0.5;title;#FFFF00,"..esc(bulletin.title or "").."]"
+			.."textarea[0.5,1.5;7.5,7;;"..esc(bulletin.text or "")..";]"
+			.."button[2.5,7.5;3,1;back;" .. S("Back to Board") .. "]"
+		if bulletin.owner == player_name then
+			formspec[#formspec+1] = "image_button[".. (#icons+1)*0.75-0.25 ..",7.35;1,1;bulletin_boards_delete.png;delete;]"
+				.."tooltip[delete;"..S("Delete this bulletin").."]"
+				.."label["..(#icons+1)*0.75-0.25 ..",7;"..S("Delete:").."]"
+		end
+	else
+		return
+	end
+
+	minetest.show_formspec(player_name, "bulletin_boards:bulletin", table.concat(formspec))
+end
+
+-- interpret clicks on the base board
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "bulletin_boards:board" then return end
+	local player_name = player:get_player_name()
+	for field, _ in pairs(fields) do
+		if field:sub(1, #"button_") == "button_" then
+			local i = tonumber(field:sub(#"button_"+1))
+			local state = bulletin_boards.player_state[player_name]
+			if state then
+				show_bulletin(player, state.board, i)
+			end
+			return
+		end
+	end
+end)
+
+-- interpret clicks on the bulletin
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "bulletin_boards:bulletin" then return end
+	local player_name = player:get_player_name()
+	local state = bulletin_boards.player_state[player_name]
+	if not state then return end
+	local board = get_board(state.board)
+	local def = bulletin_boards.board_def[state.board]
+	if not board then return end
+
+	-- no security needed on these actions
+	if fields.back then
+		bulletin_boards.player_state[player_name] = nil
+		show_board(player_name, state.board)
+	end
+
+	if fields.prev then
+		local next_index = find_prev(board, state.index)
+		show_bulletin(player, state.board, next_index)
+		return
+	end
+	if fields.next then
+		local next_index = find_next(board, state.index)
+		show_bulletin(player, state.board, next_index)
+		return
+	end
+
+	if fields.quit then
+		minetest.after(0.1, show_board, player_name, state.board)
+	end
+
+	-- check if the player's allowed to do the stuff after this
+	local admin = minetest.check_player_privs(player, adminpriv)
+	local current_bulletin = board[state.index]
+	if not admin and (current_bulletin and current_bulletin.owner ~= player_name) then
+		-- someone's done something funny. Don't be accusatory, though - could be a race condition
+		return
+	end
+
+	if fields.delete then
+		board[state.index] = nil
+		fields.title = ""
+		save_boards()
+	end
+
+	local player_inventory = minetest.get_inventory({type="player", name=player_name})
+	local has_cost = true
+	if def.cost then
+		has_cost = player_inventory:contains_item("main", def.cost)
+	end
+
+	if fields.text ~= "" and (has_cost or admin) then
+		for field, _ in pairs(fields) do
+			if field:sub(1, #"save_") == "save_" then
+				local i = tonumber(field:sub(#"save_"+1))
+				local bulletin = {}
+				bulletin.owner = player_name
+				bulletin.title = fields.title:sub(1, max_title_size)
+				bulletin.text = fields.text:sub(1, max_text_size)
+				bulletin.icon = def.icons[i]
+				bulletin.timestamp = minetest.get_gametime()
+				board[state.index] = bulletin
+				if not admin and def.cost then
+					player_inventory:remove_item("main", def.cost)
+				end
+				save_boards()
+				break
+			end
+		end
+	end
+
+	bulletin_boards.player_state[player_name] = nil
+	show_board(player_name, state.board)
+end)
+
+-- default icon set
+local base_icons = {
+	"bulletin_boards_document_comment_above.png",
+	"bulletin_boards_document_back.png",
+	"bulletin_boards_document_next.png",
+	"bulletin_boards_document_image.png",
+	"bulletin_boards_document_signature.png",
+	"bulletin_boards_to_do_list.png",
+	"bulletin_boards_documents_email.png",
+	"bulletin_boards_receipt_invoice.png",
+}
+
+-- generates a random jumble of icons to superimpose on a bulletin board texture
+-- rez is the "working" canvas size. 32-pixel icons get scattered on that canvas
+-- before it is scaled down to 16 pixels
+local function generate_random_board(rez, count, icons)
+	icons = icons or base_icons
+	local tex = {"([combine:"..rez.."x"..rez}
+	for _ = 1, count do
+		tex[#tex+1] = ":"..math.random(1,rez-32)..","..math.random(1,rez-32)
+			.."="..icons[math.random(1,#icons)]
+	end
+	tex[#tex+1] = "^[resize:16x16)"
+	return table.concat(tex)
+end
+
+local function register_board(board_name, board_def)
+	bulletin_boards.board_def[board_name] = board_def
+	local background = board_def.background or "bulletin_boards_corkboard.png"
+	local foreground = board_def.foreground or "bulletin_boards_frame.png"
+	local tile = background.."^"..generate_random_board(98, 7, board_def.icons).."^"..foreground
+	local bulletin_board_def = {
+		description = board_def.desc,
+		groups = {choppy=1, axey=1, handy=1},
+		_mcl_hardness = 0.8,
+		_mcl_blast_resistance = 1,
+		tiles = {tile},
+		inventory_image = tile,
+		paramtype = "light",
+		paramtype2 = "wallmounted",
+		sunlight_propagates = true,
+		drawtype = "nodebox",
+		node_box = {
+			type = "wallmounted",
+			wall_top    = {-0.5, 0.4375, -0.5, 0.5, 0.5, 0.5},
+			wall_bottom = {-0.5, -0.5, -0.5, 0.5, -0.4375, 0.5},
+			wall_side   = {-0.5, -0.5, -0.5, -0.4375, 0.5, 0.5},
+		},
+
+		on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+			local player_name = clicker:get_player_name()
+			show_board(player_name, board_name)
+		end,
+
+		on_construct = function(pos)
+			local meta = minetest.get_meta(pos)
+			meta:set_string("infotext", board_def.desc or "")
+		end,
+	}
+
+	minetest.register_node(board_name, bulletin_board_def)
+end
+
+if minetest.get_modpath("default") then
+
+register_board("bulletin_boards:bulletin_board_basic", {
+	desc = S("Public Bulletin Board"),
+	-- cost = "default:paper",
+	icons = base_icons,
+})
+minetest.register_craft({
+	output = "bulletin_boards:bulletin_board_basic",
+	recipe = {
+		{'group:wood', 'group:wood', 'group:wood'},
+		{'group:wood', 'default:paper', 'group:wood'},
+		{'group:wood', 'group:wood', 'group:wood'},
+	},
+})
+
+register_board("bulletin_boards:bulletin_board_copper", {
+	desc = S("Copper Board"),
+	-- cost = "default:copper_ingot",
+	foreground = "bulletin_boards_frame_copper.png",
+	icons = base_icons,
+})
+minetest.register_craft({
+	output = "bulletin_boards:bulletin_board_copper",
+	recipe = {
+		{"default:copper_ingot", "default:copper_ingot", "default:copper_ingot"},
+		{"default:copper_ingot", 'default:paper', "default:copper_ingot"},
+		{"default:copper_ingot", "default:copper_ingot", "default:copper_ingot"},
+	},
+})
+end
+
+
+if minetest.get_modpath("mcl_core") then
+	register_board("bulletin_boards:wood", {
+		desc = S("Public Bulletin Board"),
+		-- cost = "mcl_core:paper",
+		icons = base_icons,
+	})
+	minetest.register_craft({
+		output = "bulletin_boards:wood",
+		recipe = {
+			{'group:wood', 'group:wood', 'group:wood'},
+			{'group:wood', 'mcl_core:paper', 'group:wood'},
+			{'group:wood', 'group:wood', 'group:wood'},
+		},
+	})
+
+	if minetest.get_modpath("mcl_copper") then
+		register_board("bulletin_boards:copper", {
+			desc = S("Copper Board"),
+			-- cost = "mcl_copper:copper_ingot",
+			foreground = "bulletin_boards_frame_copper.png",
+			icons = base_icons,
+		})
+		minetest.register_craft({
+			output = "bulletin_boards:copper",
+			recipe = {
+				{"mcl_copper:copper_ingot", "mcl_copper:copper_ingot", "mcl_copper:copper_ingot"},
+				{"mcl_copper:copper_ingot", 'mcl_core:paper', "mcl_copper:copper_ingot"},
+				{"mcl_copper:copper_ingot", "mcl_copper:copper_ingot", "mcl_copper:copper_ingot"},
+			},
+		})
+	end
+end

locale/bulletin_boards.de.tr

@@ -0,0 +1,18 @@
+# textdomain: bulletin_boards
+Post your bulletin here for the cost of @1 @2=Schlage deinen Eintrag für @1 @2 an
+, Cost: @1 @2=, kostet: @1 @2
+Post your bulletin here=Schlage deinen Eintrag hier an
+@1@nPosted by @2@n@3 days ago=@1@nGepostet von @2@nvor @3 Tagen
+Post bulletin with this icon at the cost of @1 @2=Schlägt den Eintrag mit diesem Bild für @1 @2 an
+Post bulletin with this icon=Eintrag mit diesem Bild anschlagens
+Prev=Vorher
+Next=Nächste
+Title:=Titel:
+Contents:=Inhalt:
+Post:=Anschlagen:
+Delete this bulletin=Lösche diesen Eintrag
+Delete:=Löschen:
+Posted by @1=Angeschlagen von @1
+Back to Board=Zurück zum Brett
+Public Bulletin Board=Öffentliche Anschlagtafel
+Copper Board=Kupfernes Brett

locale/bulletin_boards.es.tr

@@ -0,0 +1,18 @@
+# textdomain: bulletin_boards
+Post your bulletin here for the cost of @1 @2=Publica tu boletín aqui al precio de @1 @2
+, Cost: @1 @2=, Precio: @1 @2
+Post your bulletin here=Publica tu boletín aqui
+@1@nPosted by @2@n@3 days ago=@1@nPublicado por @2 hace @n@3 días
+Post bulletin with this icon at the cost of @1 @2=Publicar este boletín con este ícono al precio de @1 @2
+Post bulletin with this icon=Publicar un boletín con este ícono
+Prev=Prev
+Next=Sig
+Title:=Título:
+Contents:=Contenidos:
+Post:=Publicar:
+Delete this bulletin=Borrar este boletín
+Delete:=Borrar:
+Posted by @1=Publicado por @1
+Back to Board=Volver al tablón
+Public Bulletin Board=Tablón publico de anuncios
+Copper Board=Tablón de Cobre

locale/template.txt

@@ -0,0 +1,18 @@
+# textdomain: bulletin_boards
+Post your bulletin here for the cost of @1 @2=
+, Cost: @1 @2=
+Post your bulletin here=
+@1@nPosted by @2@n@3 days ago=
+Post bulletin with this icon at the cost of @1 @2=
+Post bulletin with this icon=
+Prev=
+Next=
+Title:=
+Contents:=
+Post:=
+Delete this bulletin=
+Delete:=
+Posted by @1=
+Back to Board=
+Public Bulletin Board=
+Copper Board=

mod.conf

@@ -0,0 +1,7 @@
+name = bulletin_boards
+description = Allows creation of global bulletin boards where players can post public messages
+optional_depends = default, mcl_core, mcl_copper
+
+release = 30339
+author = FaceDeer
+title = Global Bulletin Boards

settingtypes.txt

@@ -0,0 +1,4 @@
+# Adminpriv
+# Set this to the priv you want to have moderation rights on bulletin boards
+# Optional, default is "server"
+bulletin_boards.adminpriv (Adminpriv) string server

textures/license.txt

@@ -0,0 +1,17 @@
+bulletin_boards_corkboard.png and bulletin_boards_frame.png - by FaceDeer, released under the CC-0 public domain license
+
+bulletin_boards_delete.png - from https://commons.wikimedia.org/wiki/File:Symbol_delete_vote_darkened.svg under the public domain
+
+The following are from the "Farm-Fresh Web Icons" set, May 5 2014, from http://www.fatcow.com/free-icons by FatCow under the CC-BY-SA 3.0 unported license:
+bulletin_boards_document_back.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_document_back.png
+bulletin_boards_document_comment_above.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_document_comment_above.png
+bulletin_boards_document_image.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_document_image.png
+bulletin_boards_document_next.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_document_next.png
+bulletin_boards_document_notes.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_document_notes.png
+bulletin_boards_document_quote.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_document_quote.png
+bulletin_boards_document_signature.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_document_signature.png
+bulletin_boards_documents_email.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_documents_email.png
+bulletin_boards_receipt_invoice.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_receipt_invoice.png
+bulletin_boards_to_do_list.png - https://commons.wikimedia.org/wiki/File:Farm-Fresh_to_do_list.png
+
+The Farm-Fresh Web Icons were found via found from https://commons.wikimedia.org/wiki/Category:Document_icons if you want more of them