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Commit | Line | Data |
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2e163546 | 1 | local getopt = require('getopt') |
2 | local utils = require('utils') | |
3 | ||
4 | example = "script calculates many checksums (CRC) over the provided hex input" | |
5 | author = "Iceman" | |
6 | desc = | |
7 | [[ | |
8 | This script calculates many checksums (CRS) over the provided hex input. | |
9 | ||
10 | Arguments: | |
11 | -b data in hex | |
12 | -w width of the CRC algorithm. <optional> defaults to all known CRC presets. | |
13 | Examples : | |
14 | script run e -b 010203040506070809 | |
15 | script run e -b 010203040506070809 -w 16 | |
16 | ]] | |
17 | ||
18 | --- | |
19 | -- A debug printout-function | |
20 | function dbg(args) | |
21 | if DEBUG then | |
22 | print("###", args) | |
23 | end | |
24 | end | |
25 | --- | |
26 | -- This is only meant to be used when errors occur | |
27 | function oops(err) | |
28 | print("ERROR: ",err) | |
29 | return nil,err | |
30 | end | |
31 | --- | |
32 | -- Usage help | |
33 | function help() | |
34 | print(desc) | |
35 | print("Example usage") | |
36 | print(example) | |
37 | end | |
38 | --- | |
39 | -- The main entry point | |
40 | function main(args) | |
41 | ||
42 | local data = '01020304' | |
43 | local width = 0 | |
44 | ||
45 | -- Read the parameters | |
46 | for o, a in getopt.getopt(args, 'hb:w:') do | |
47 | if o == "h" then return help() end | |
48 | if o == "b" then data = utils.ConvertHexToa end | |
49 | if o == "w" then width = a end | |
50 | end | |
51 | ||
52 | print('Width of CRC: '..width..' bytes: '..data) | |
53 | print('') | |
54 | print('Model','CRC', 'CRC_Reverse') | |
55 | ||
56 | local lists = core.reveng_models(width) | |
57 | for _,i in pairs(lists) do | |
58 | local one = core.reveng_runmodel(i, data, 0,0) | |
59 | local two = core.reveng_runmodel(i, data, 1,0) | |
60 | ||
61 | print(i, one, two) | |
62 | end | |
63 | ||
64 | if 1 == 1 then | |
65 | return | |
66 | end | |
67 | end | |
68 | ||
69 | main(args) |