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--[[
Copyright (c) 2022, Vsevolod Stakhov <vsevolod@rspamd.com>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
local l = require 'lpeg'
local lua_util = require "lua_util"
local N = "lua_content"
local vcard_grammar
-- XXX: Currently it is a copy of ical grammar
local function gen_grammar()
if not vcard_grammar then
local wsp = l.S(" \t\v\f")
local crlf = (l.P"\r"^-1 * l.P"\n") + l.P"\r"
local eol = (crlf * #crlf) + (crlf - (crlf^-1 * wsp))
local name = l.C((l.P(1) - (l.P":"))^1) / function(v) return (v:gsub("[\n\r]+%s","")) end
local value = l.C((l.P(1) - eol)^0) / function(v) return (v:gsub("[\n\r]+%s","")) end
vcard_grammar = name * ":" * wsp^0 * value * eol^-1
end
return vcard_grammar
end
local exports = {}
local function process_vcard(input, mpart, task)
local control={n='\n', r=''}
local rspamd_url = require "rspamd_url"
local escaper = l.Ct((gen_grammar() / function(key, value)
value = value:gsub("\\(.)", control)
key = key:lower()
local local_urls = rspamd_url.all(task:get_mempool(), value)
if local_urls and #local_urls > 0 then
for _,u in ipairs(local_urls) do
lua_util.debugm(N, task, 'vcard: found URL in vcard %s',
tostring(u))
task:inject_url(u, mpart)
end
end
lua_util.debugm(N, task, 'vcard: vcard key %s = "%s"',
key, value)
return {key, value}
end)^1)
local elts = escaper:match(input)
if not elts then
return nil
end
return {
tag = 'vcard',
extract_text = function() return nil end, -- NYI
elts = elts
}
end
--[[[
-- @function vcard.process(input)
-- Returns all values from vcard as a plain text. Names are completely ignored.
--]]
exports.process = process_vcard
return exports
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