Proton/default_pfx.py

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#!/usr/bin/env python3
# usage: default_pfx.py path/to/default_pfx_dir path/to/dist
"Helper module for building the default prefix"
import os
import subprocess
def file_is_wine_builtin_dll(path):
if not os.path.exists(path):
return False
try:
sfile = open(path, "rb")
sfile.seek(0x40)
tag = sfile.read(20)
return tag.startswith((b"Wine placeholder DLL", b"Wine builtin DLL"))
except IOError:
return False
def little_endian_bytes_to_uint(b):
result = 0
multiplier = 1
for i in b:
result += i * multiplier
multiplier <<= 8
return result
def dll_bitness(path):
if not os.path.exists(path):
return 0
try:
sfile = open(path, "rb")
sfile.seek(0x3c)
ntheader_ofs = little_endian_bytes_to_uint(sfile.read(4))
sfile.seek(0x18 + ntheader_ofs)
magic = sfile.read(2)
if magic == bytes((11, 1)):
return 32
if magic == bytes((11, 2)):
return 64
return 0
except IOError:
return 0
def make_relative_symlink(target, linkname):
target = os.path.abspath(target)
linkname = os.path.abspath(linkname)
rel = os.path.relpath(target, os.path.dirname(linkname))
os.symlink(rel, linkname)
def setup_dll_symlinks(default_pfx_dir, dist_dir):
skip_dlls = [ 'amd_ags_x64.dll' ]
for walk_dir, dirs, files in os.walk(default_pfx_dir):
for file_ in files:
filename = os.path.join(walk_dir, file_)
if file_ in skip_dlls:
continue
if os.path.isfile(filename) and file_is_wine_builtin_dll(filename):
bitness = dll_bitness(filename)
if bitness == 32:
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libdir = os.path.join(dist_dir, 'lib/wine/i386-windows')
elif bitness == 64:
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libdir = os.path.join(dist_dir, 'lib64/wine/x86_64-windows')
else:
continue
if os.path.exists(os.path.join(libdir, file_)):
target = os.path.join(libdir, file_)
else:
continue
os.unlink(filename)
make_relative_symlink(target, filename)
def make_default_pfx(default_pfx_dir, dist_dir, runtime):
local_env = dict(os.environ)
ld_path = dist_dir + "/lib64:" + dist_dir + "/lib"
if runtime is None:
local_env["LD_LIBRARY_PATH"] = ld_path
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local_env["WINEPREFIX"] = default_pfx_dir
local_env["WINEDEBUG"] = "-all"
runtime_args = []
else:
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#the runtime clears the environment, so we pass it in on the CL via env
runtime_args = runtime + ["env",
"LD_LIBRARY_PATH=" + ld_path,
"WINEPREFIX=" + default_pfx_dir,
"WINEDEBUG=-all"]
subprocess.run(runtime_args + ["/bin/bash", "-c",
os.path.join(dist_dir, 'bin', 'wine') + " wineboot && " +
os.path.join(dist_dir, 'bin', 'wineserver') + " -w"],
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env=local_env, check=True)
setup_dll_symlinks(default_pfx_dir, dist_dir)
if __name__ == '__main__':
import sys
if len(sys.argv) > 3:
make_default_pfx(sys.argv[1], sys.argv[2], sys.argv[3:])
else:
make_default_pfx(sys.argv[1], sys.argv[2], None)