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-rw-r--r--lualib/lua_magic/patterns.lua471
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diff --git a/lualib/lua_magic/patterns.lua b/lualib/lua_magic/patterns.lua
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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.
+]]--
+
+--[[[
+-- @module lua_magic/patterns
+-- This module contains most common patterns
+--]]
+
+local heuristics = require "lua_magic/heuristics"
+
+local patterns = {
+ pdf = {
+ -- These are alternatives
+ matches = {
+ {
+ string = [[%PDF-[12]\.\d]],
+ position = { '<=', 1024 },
+ weight = 60,
+ heuristic = heuristics.pdf_format_heuristic
+ },
+ {
+ string = [[%FDF-[12]\.\d]],
+ position = { '<=', 1024 },
+ weight = 60,
+ heuristic = heuristics.pdf_format_heuristic
+ },
+ },
+ },
+ ps = {
+ matches = {
+ {
+ string = [[%!PS-Adobe]],
+ relative_position = 0,
+ weight = 60,
+ },
+ },
+ },
+ -- RTF document
+ rtf = {
+ matches = {
+ {
+ string = [[^{\\rt]],
+ position = 4,
+ weight = 60,
+ }
+ }
+ },
+ chm = {
+ matches = {
+ {
+ string = [[ITSF]],
+ relative_position = 0,
+ weight = 60,
+ }
+ }
+ },
+ djvu = {
+ matches = {
+ {
+ string = [[AT&TFORM]],
+ relative_position = 0,
+ weight = 60,
+ },
+ {
+ string = [[DJVM]],
+ relative_position = 0x0c,
+ weight = 60,
+ }
+ }
+ },
+ -- MS Office format, needs heuristic
+ ole = {
+ matches = {
+ {
+ hex = [[d0cf11e0a1b11ae1]],
+ relative_position = 0,
+ weight = 60,
+ heuristic = heuristics.ole_format_heuristic
+ }
+ }
+ },
+ -- MS Exe file
+ exe = {
+ matches = {
+ {
+ string = [[MZ]],
+ relative_position = 0,
+ weight = 15,
+ },
+ -- PE part
+ {
+ string = [[PE\x{00}\x{00}]],
+ position = { '>=', 0x3c + 4 },
+ weight = 15,
+ heuristic = heuristics.pe_part_heuristic,
+ }
+ }
+ },
+ elf = {
+ matches = {
+ {
+ hex = [[7f454c46]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ lnk = {
+ matches = {
+ {
+ hex = [[4C0000000114020000000000C000000000000046]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ bat = {
+ matches = {
+ {
+ string = [[(?i)@\s*ECHO\s+OFF]],
+ position = { '>=', 0 },
+ weight = 60,
+ },
+ }
+ },
+ class = {
+ -- Technically, this also matches MachO files, but I don't care about
+ -- Apple and their mental health problems here: just consider Java files,
+ -- Mach object files and all other cafe babes as bad and block them!
+ matches = {
+ {
+ hex = [[cafebabe]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ ics = {
+ matches = {
+ {
+ string = [[BEGIN:VCALENDAR]],
+ weight = 60,
+ relative_position = 0,
+ }
+ }
+ },
+ vcf = {
+ matches = {
+ {
+ string = [[BEGIN:VCARD]],
+ weight = 60,
+ relative_position = 0,
+ }
+ }
+ },
+ -- Archives
+ arj = {
+ matches = {
+ {
+ hex = '60EA',
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ ace = {
+ matches = {
+ {
+ string = [[\*\*ACE\*\*]],
+ position = 14,
+ weight = 60,
+ },
+ }
+ },
+ cab = {
+ matches = {
+ {
+ hex = [[4d53434600000000]], -- Can be anywhere for SFX :(
+ position = { '>=', 8 },
+ weight = 60,
+ },
+ }
+ },
+ tar = {
+ matches = {
+ {
+ string = [[ustar]],
+ relative_position = 257,
+ weight = 60,
+ },
+ }
+ },
+ bz2 = {
+ matches = {
+ {
+ string = "^BZ[h0]",
+ position = 3,
+ weight = 60,
+ },
+ }
+ },
+ lz4 = {
+ matches = {
+ {
+ hex = "04224d18",
+ relative_position = 0,
+ weight = 60,
+ },
+ {
+ hex = "03214c18",
+ relative_position = 0,
+ weight = 60,
+ },
+ {
+ hex = "02214c18",
+ relative_position = 0,
+ weight = 60,
+ },
+ {
+ -- MozLZ4
+ hex = '6d6f7a4c7a343000',
+ relative_position = 0,
+ weight = 60,
+ }
+ }
+ },
+ zst = {
+ matches = {
+ {
+ string = [[^[\x{22}-\x{40}]\x{B5}\x{2F}\x{FD}]],
+ position = 4,
+ weight = 60,
+ },
+ }
+ },
+ zoo = {
+ matches = {
+ {
+ hex = [[dca7c4fd]],
+ relative_position = 20,
+ weight = 60,
+ },
+ }
+ },
+ xar = {
+ matches = {
+ {
+ string = [[xar!]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ iso = {
+ matches = {
+ {
+ string = [[\x{01}CD001\x{01}]],
+ position = { '>=', 0x8000 + 7 }, -- first 32k is unused
+ weight = 60,
+ },
+ }
+ },
+ egg = {
+ -- ALZip egg
+ matches = {
+ {
+ string = [[EGGA]],
+ weight = 60,
+ relative_position = 0,
+ },
+ }
+ },
+ alz = {
+ -- ALZip alz
+ matches = {
+ {
+ string = [[ALZ\x{01}]],
+ weight = 60,
+ relative_position = 0,
+ },
+ }
+ },
+ -- Apple is a 'special' child: this needs to be matched at the data tail...
+ dmg = {
+ matches = {
+ {
+ string = [[koly\x{00}\x{00}\x{00}\x{04}]],
+ position = -512 + 8,
+ weight = 61,
+ tail = 512,
+ },
+ }
+ },
+ szdd = {
+ matches = {
+ {
+ hex = [[535a4444]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ xz = {
+ matches = {
+ {
+ hex = [[FD377A585A00]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ -- Images
+ psd = {
+ matches = {
+ {
+ string = [[8BPS]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ ico = {
+ matches = {
+ {
+ hex = [[00000100]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ pcx = {
+ matches = {
+ {
+ hex = [[0A050108]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ pic = {
+ matches = {
+ {
+ hex = [[FF80C9C71A00]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ swf = {
+ matches = {
+ {
+ hex = [[5a5753]], -- LZMA
+ relative_position = 0,
+ weight = 60,
+ },
+ {
+ hex = [[435753]], -- Zlib
+ relative_position = 0,
+ weight = 60,
+ },
+ {
+ hex = [[465753]], -- Uncompressed
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ tiff = {
+ matches = {
+ {
+ hex = [[49492a00]], -- LE encoded
+ relative_position = 0,
+ weight = 60,
+ },
+ {
+ hex = [[4d4d]], -- BE tiff
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ -- Other
+ pgp = {
+ matches = {
+ {
+ hex = [[A803504750]],
+ relative_position = 0,
+ weight = 60,
+ },
+ {
+ hex = [[2D424547494E20504750204D4553534147452D]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ uue = {
+ matches = {
+ {
+ hex = [[626567696e20]],
+ relative_position = 0,
+ weight = 60,
+ },
+ }
+ },
+ dwg = {
+ matches = {
+ {
+ string = '^AC10[12][2-9]',
+ position = 6,
+ weight = 60,
+ }
+ }
+ },
+ jpg = {
+ matches = {
+ { -- JPEG2000
+ hex = [[0000000c6a5020200d0a870a]],
+ relative_position = 0,
+ weight = 60,
+ },
+ {
+ string = [[^\x{ff}\x{d8}\x{ff}]],
+ weight = 60,
+ position = 3,
+ },
+ },
+ },
+ png = {
+ matches = {
+ {
+ string = [[^\x{89}PNG\x{0d}\x{0a}\x{1a}\x{0a}]],
+ position = 8,
+ weight = 60,
+ },
+ }
+ },
+ gif = {
+ matches = {
+ {
+ string = [[^GIF8\d]],
+ position = 5,
+ weight = 60,
+ },
+ }
+ },
+ bmp = {
+ matches = {
+ {
+ string = [[^BM...\x{00}\x{00}\x{00}\x{00}]],
+ position = 9,
+ weight = 60,
+ },
+ }
+ },
+}
+
+return patterns
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 17:19:38 +0000