elixir-desktop/libpe

Library and tasks to read and update Windows PE file resources

LibPE

Library and mix tasks to read and update Windows PE file resources. Based on https://docs.microsoft.com/en-us/windows/win32/debug/pe-format

Only tested/needed with .exe files so far.

Example Usage

To check an existing PE file (.exe)

  mix pe.checksum <filename.exe>

To update the checksum:

  mix pe.update <filename.exe>

To list all resources in a file:

  mix pe.dump <filename.exe>

To set an icon resource (and update the checksum):

  mix pe.update --set-icon <icon.png> <filename.exe>

Installation

To add LibPE to your build steps and make the tasks availabe add libpe to your list of dependencies in mix.exs:

def deps do
  [
    {:libpe, "~> 1.0.0", only: :dev, runtime: false}
  ]
end

libpe's Issues

Cannot set icon

Here's a very simple program:

#include<stdio.h>

int main() {
  printf("Press enter to quit...\n");
  getc(stdin);
  return 0;
}

which I'm compiling with mingw:

$ x86_64-w64-mingw32-gcc -o hello.exe hello.c

Running a few libpe commands works well:

$ mix pe.dump hello.exe
Dumping file: hello.exe
=======================
NO RESOURCE TABLE

$ mix pe.checksum hello.exe
hello.exe            checksum:   317689, should:   317689 ==> CORRECT!

but not setting the icon. First, this is how I created the icon:

$ curl -LO https://elixir-lang.org/images/logo/logo.png
$ magick logo.png -background none -resize 128x128 -density 128x128 logo.ico

And now setting the icon:

$ mix pe.update --set-icon logo.ico hello.exe
Updating file hello.exe
** (FunctionClauseError) no function clause matching in LibPE.ResourceTable.set_resource/5

    The following arguments were given to LibPE.ResourceTable.set_resource/5:

        # 1
        nil

        # 2
        3

        # 3
        <<0, 0, 1, 0, 1, 0, 128, 53, 0, 0, 1, 0, 32, 0, 120, 109, 0, 0, 22, 0, 0, 0, 40, 0, 0, 0, 128, 0, 0, 0, 106, 0, 0, 0, 1, 0, 32, 0, 0, 0, 0, 0, 0, 106, 0, 0, 175, 19, 0, 0, ...>>

        # 4
        0

        # 5
        1033

    Attempted function clauses (showing 1 out of 1):

        def set_resource(table = %LibPE.ResourceTable{entries: entries}, resource_type, data, codepage, language) when is_binary(data)

    lib/libpe/resource_table.ex:114: LibPE.ResourceTable.set_resource/5
    (elixir 1.14.0-dev) lib/enum.ex:2458: Enum."-reduce/3-lists^foldl/2-0-"/3
    lib/mix/tasks/update.ex:58: Mix.Tasks.Pe.Update.update_resources/2
    lib/mix/tasks/update.ex:39: anonymous fn/2 in Mix.Tasks.Pe.Update.run/1
    (elixir 1.14.0-dev) lib/enum.ex:968: Enum."-each/2-lists^foreach/1-0-"/2
    (mix 1.14.0-dev) lib/mix/task.ex:421: anonymous fn/3 in Mix.Task.run_task/4
    (mix 1.14.0-dev) lib/mix/cli.ex:84: Mix.CLI.run_task/2

I'm using the latest libpe:

$ mix deps
* libpe 1.1.2 (Hex package) (mix)