| 1 | bin = require('bin') |
| 2 | |
| 3 | |
| 4 | ------------------------------- |
| 5 | -- Some utilities |
| 6 | ------------------------------- |
| 7 | |
| 8 | --- |
| 9 | -- A debug printout-function |
| 10 | local function dbg(args) |
| 11 | |
| 12 | if type(args) == "table" then |
| 13 | local i = 1 |
| 14 | while args[i] do |
| 15 | print("###", args[i]) |
| 16 | i = i+1 |
| 17 | end |
| 18 | else |
| 19 | print("###", args) |
| 20 | end |
| 21 | end |
| 22 | --- |
| 23 | -- This is only meant to be used when errors occur |
| 24 | local function oops(err) |
| 25 | print("ERROR: ",err) |
| 26 | return nil, err |
| 27 | end |
| 28 | |
| 29 | local function save_HTML(javascript, filename) |
| 30 | |
| 31 | -- Read the HTML-skel file |
| 32 | local skel = require("htmlskel") |
| 33 | html = skel.getHTML(javascript); |
| 34 | |
| 35 | -- Open the output file |
| 36 | |
| 37 | local outfile = io.open(filename, "w") |
| 38 | if outfile == nil then |
| 39 | return oops(string.format("Could not write to file %s",tostring(filename))) |
| 40 | end |
| 41 | -- Write the data into it |
| 42 | outfile:write(html) |
| 43 | io.close(outfile) |
| 44 | |
| 45 | -- Done |
| 46 | return filename |
| 47 | |
| 48 | end |
| 49 | |
| 50 | local function save_TEXT(data,filename) |
| 51 | -- Open the output file |
| 52 | local outfile = io.open(filename, "w") |
| 53 | if outfile == nil then |
| 54 | return oops(string.format("Could not write to file %s",tostring(filename))) |
| 55 | end |
| 56 | |
| 57 | outfile:write(data) |
| 58 | io.close(outfile) |
| 59 | return filename |
| 60 | end |
| 61 | |
| 62 | local function save_BIN(data, filename) |
| 63 | -- Open the output file |
| 64 | |
| 65 | local outfile = io.open(filename, "wb") |
| 66 | if outfile == nil then |
| 67 | return oops(string.format("Could not write to file %s",tostring(filename))) |
| 68 | end |
| 69 | |
| 70 | -- Write the data into it |
| 71 | local i = 1 |
| 72 | while data[i] do |
| 73 | outfile:write(data[i]) |
| 74 | i = i+1 |
| 75 | end |
| 76 | |
| 77 | io.close(outfile) |
| 78 | return filename |
| 79 | end |
| 80 | |
| 81 | local function convert_ascii_dump_to_JS(infile) |
| 82 | local t = infile:read("*all") |
| 83 | |
| 84 | local output = "["; |
| 85 | for line in string.gmatch(t, "[^\n]+") do |
| 86 | if string.byte(line,1) ~= string.byte("+",1) then |
| 87 | output = output .. "'"..line.."',\n" |
| 88 | end |
| 89 | end |
| 90 | output = output .. "]" |
| 91 | return output |
| 92 | end |
| 93 | |
| 94 | local function convert_binary_dump_to_JS(infile, blockLen) |
| 95 | local bindata = infile:read("*all") |
| 96 | len = string.len(bindata) |
| 97 | |
| 98 | if len % blockLen ~= 0 then |
| 99 | return oops(("Bad data, length (%d) should be a multiple of blocklen (%d)"):format(len, blockLen)) |
| 100 | end |
| 101 | |
| 102 | local _,hex = bin.unpack(("H%d"):format(len),bindata) |
| 103 | |
| 104 | -- Now that we've converted binary data into hex, we doubled the size. |
| 105 | -- One byte, like 0xDE is now |
| 106 | -- the characters 'D' and 'E' : one byte each. |
| 107 | -- Thus: |
| 108 | blockLen = blockLen * 2 |
| 109 | |
| 110 | local js,i = "["; |
| 111 | for i = 1, string.len(hex),blockLen do |
| 112 | js = js .."'" ..string.sub(hex,i,i+blockLen -1).."',\n" |
| 113 | end |
| 114 | js = js .. "]" |
| 115 | return js |
| 116 | end |
| 117 | |
| 118 | local function convert_ascii_dump_to_BIN(infile) |
| 119 | local t = infile:read("*all") |
| 120 | |
| 121 | local output = {}; |
| 122 | for line in string.gmatch(t, "[^\n]+") do |
| 123 | if string.byte(line) ~= string.byte("+") then |
| 124 | for c in (line or ''):gmatch('..') do |
| 125 | output[#output+1] = string.char( tonumber(c,16) ) |
| 126 | end |
| 127 | end |
| 128 | end |
| 129 | return output |
| 130 | end |
| 131 | |
| 132 | |
| 133 | --- |
| 134 | -- Converts a .eml-file into a HTML/Javascript file. |
| 135 | -- @param input the file to convert |
| 136 | -- @param output the file to write to |
| 137 | -- @return the name of the new file. |
| 138 | local function convert_eml_to_html(input, output) |
| 139 | input = input or 'dumpdata.eml' |
| 140 | output = output or input .. 'html' |
| 141 | |
| 142 | local infile = io.open(input, "r") |
| 143 | if infile == nil then |
| 144 | return oops(string.format("Could not read file %s",tostring(input))) |
| 145 | end |
| 146 | |
| 147 | -- Read file, get JS |
| 148 | local javascript = convert_ascii_dump_to_JS(infile) |
| 149 | io.close(infile) |
| 150 | return save_HTML(javascript, output ) |
| 151 | end |
| 152 | |
| 153 | --- Converts a binary dump into HTML/Javascript file |
| 154 | -- @param input the file containing the dump (defaults to dumpdata.bin) |
| 155 | -- @param output the file to write to |
| 156 | -- @param blockLen, the length of each block. Defaults to 16 bytes |
| 157 | local function convert_bin_to_html(input, output, blockLen) |
| 158 | input = input or 'dumpdata.bin' |
| 159 | blockLen = blockLen or 16 |
| 160 | output = output or input .. 'html' |
| 161 | |
| 162 | local infile = io.open(input, "rb") |
| 163 | if infile == nil then |
| 164 | return oops(string.format("Could not read file %s",tostring(input))) |
| 165 | end |
| 166 | -- Read file, get JS |
| 167 | local javascript = convert_binary_dump_to_JS(infile, blockLen) |
| 168 | io.close(infile) |
| 169 | |
| 170 | return save_HTML(javascript, output ) |
| 171 | end |
| 172 | |
| 173 | --- Converts a eml dump into a binary file |
| 174 | -- @param input the file containing the eml-dump (defaults to dumpdata.eml) |
| 175 | -- @param output the file to write to ( defaults to dumpdata.bin) |
| 176 | local function convert_eml_to_bin(input, output) |
| 177 | input = input or 'dumpdata.eml' |
| 178 | output = output or 'dumpdata.bin' |
| 179 | |
| 180 | local infile = io.open(input, "rb") |
| 181 | if infile == nil then |
| 182 | return oops(string.format("Could not read file %s",tostring(input))) |
| 183 | end |
| 184 | -- Read file, get BIN |
| 185 | local data = convert_ascii_dump_to_BIN(infile) |
| 186 | io.close(infile) |
| 187 | |
| 188 | return save_BIN(data, output ) |
| 189 | end |
| 190 | |
| 191 | |
| 192 | return { |
| 193 | convert_bin_to_html = convert_bin_to_html, |
| 194 | convert_eml_to_html = convert_eml_to_html, |
| 195 | convert_eml_to_bin = convert_eml_to_bin, |
| 196 | SaveAsBinary = save_BIN, |
| 197 | SaveAsText = save_TEXT, |
| 198 | } |