Firmware2/buildroot/share/PlatformIO/scripts/signature.py
2022-08-06 18:50:49 -05:00

277 lines
8.4 KiB
Python

#
# signature.py
#
import schema
import subprocess,re,json,hashlib
from datetime import datetime
from pathlib import Path
#
# Return all macro names in a header as an array, so we can take
# the intersection with the preprocessor output, giving a decent
# reflection of all enabled options that (probably) came from the
# configuration files. We end up with the actual configured state,
# better than what the config files say. You can then use the
# resulting config.ini to produce more exact configuration files.
#
def extract_defines(filepath):
f = open(filepath, encoding="utf8").read().split("\n")
a = []
for line in f:
sline = line.strip()
if sline[:7] == "#define":
# Extract the key here (we don't care about the value)
kv = sline[8:].strip().split()
a.append(kv[0])
return a
# Compute the SHA256 hash of a file
def get_file_sha256sum(filepath):
sha256_hash = hashlib.sha256()
with open(filepath,"rb") as f:
# Read and update hash string value in blocks of 4K
for byte_block in iter(lambda: f.read(4096),b""):
sha256_hash.update(byte_block)
return sha256_hash.hexdigest()
#
# Compress a JSON file into a zip file
#
import zipfile
def compress_file(filepath, outpath):
with zipfile.ZipFile(outpath, 'w', compression=zipfile.ZIP_BZIP2, compresslevel=9) as zipf:
zipf.write(filepath, compress_type=zipfile.ZIP_BZIP2, compresslevel=9)
#
# Compute the build signature. The idea is to extract all defines in the configuration headers
# to build a unique reversible signature from this build so it can be included in the binary
# We can reverse the signature to get a 1:1 equivalent configuration file
#
def compute_build_signature(env):
if 'BUILD_SIGNATURE' in env:
return
# Definitions from these files will be kept
files_to_keep = [ 'Marlin/Configuration.h', 'Marlin/Configuration_adv.h' ]
build_path = Path(env['PROJECT_BUILD_DIR'], env['PIOENV'])
# Check if we can skip processing
hashes = ''
for header in files_to_keep:
hashes += get_file_sha256sum(header)[0:10]
marlin_json = build_path / 'marlin_config.json'
marlin_zip = build_path / 'mc.zip'
# Read existing config file
try:
with marlin_json.open() as infile:
conf = json.load(infile)
if conf['__INITIAL_HASH'] == hashes:
# Same configuration, skip recomputing the building signature
compress_file(marlin_json, marlin_zip)
return
except:
pass
# Get enabled config options based on preprocessor
from preprocessor import run_preprocessor
complete_cfg = run_preprocessor(env)
# Dumb #define extraction from the configuration files
conf_defines = {}
all_defines = []
for header in files_to_keep:
defines = extract_defines(header)
# To filter only the define we want
all_defines += defines
# To remember from which file it cames from
conf_defines[header.split('/')[-1]] = defines
r = re.compile(r"\(+(\s*-*\s*_.*)\)+")
# First step is to collect all valid macros
defines = {}
for line in complete_cfg:
# Split the define from the value
key_val = line[8:].strip().decode().split(' ')
key, value = key_val[0], ' '.join(key_val[1:])
# Ignore values starting with two underscore, since it's low level
if len(key) > 2 and key[0:2] == "__" :
continue
# Ignore values containing a parenthesis (likely a function macro)
if '(' in key and ')' in key:
continue
# Then filter dumb values
if r.match(value):
continue
defines[key] = value if len(value) else ""
#
# Continue to gather data for CONFIGURATION_EMBEDDING or CONFIG_EXPORT
#
if not ('CONFIGURATION_EMBEDDING' in defines or 'CONFIG_EXPORT' in defines):
return
# Second step is to filter useless macro
resolved_defines = {}
for key in defines:
# Remove all boards now
if key.startswith("BOARD_") and key != "BOARD_INFO_NAME":
continue
# Remove all keys ending by "_NAME" as it does not make a difference to the configuration
if key.endswith("_NAME") and key != "CUSTOM_MACHINE_NAME":
continue
# Remove all keys ending by "_T_DECLARED" as it's a copy of extraneous system stuff
if key.endswith("_T_DECLARED"):
continue
# Remove keys that are not in the #define list in the Configuration list
if key not in all_defines + [ 'DETAILED_BUILD_VERSION', 'STRING_DISTRIBUTION_DATE' ]:
continue
# Don't be that smart guy here
resolved_defines[key] = defines[key]
# Generate a build signature now
# We are making an object that's a bit more complex than a basic dictionary here
data = {}
data['__INITIAL_HASH'] = hashes
# First create a key for each header here
for header in conf_defines:
data[header] = {}
# Then populate the object where each key is going to (that's a O(N^2) algorithm here...)
for key in resolved_defines:
for header in conf_defines:
if key in conf_defines[header]:
data[header][key] = resolved_defines[key]
# Every python needs this toy
def tryint(key):
try:
return int(defines[key])
except:
return 0
config_dump = tryint('CONFIG_EXPORT')
#
# Produce an INI file if CONFIG_EXPORT == 2
#
if config_dump == 2:
print("Generating config.ini ...")
config_ini = build_path / 'config.ini'
with config_ini.open('w') as outfile:
ignore = ('CONFIGURATION_H_VERSION', 'CONFIGURATION_ADV_H_VERSION', 'CONFIG_EXPORT')
filegrp = { 'Configuration.h':'config:basic', 'Configuration_adv.h':'config:advanced' }
vers = defines["CONFIGURATION_H_VERSION"]
dt_string = datetime.now().strftime("%Y-%m-%d at %H:%M:%S")
ini_fmt = '{0:40}{1}\n'
outfile.write(
'#\n'
+ '# Marlin Firmware\n'
+ '# config.ini - Options to apply before the build\n'
+ '#\n'
+ f'# Generated by Marlin build on {dt_string}\n'
+ '#\n'
+ '\n'
+ '[config:base]\n'
+ ini_fmt.format('ini_use_config', ' = all')
+ ini_fmt.format('ini_config_vers', f' = {vers}')
)
# Loop through the data array of arrays
for header in data:
if header.startswith('__'):
continue
outfile.write('\n[' + filegrp[header] + ']\n')
for key in sorted(data[header]):
if key not in ignore:
val = 'on' if data[header][key] == '' else data[header][key]
outfile.write(ini_fmt.format(key.lower(), ' = ' + val))
#
# Produce a schema.json file if CONFIG_EXPORT == 3
#
if config_dump >= 3:
try:
conf_schema = schema.extract()
except Exception as exc:
print("Error: " + str(exc))
conf_schema = None
if conf_schema:
#
# Produce a schema.json file if CONFIG_EXPORT == 3
#
if config_dump in (3, 13):
print("Generating schema.json ...")
schema.dump_json(conf_schema, build_path / 'schema.json')
if config_dump == 13:
schema.group_options(conf_schema)
schema.dump_json(conf_schema, build_path / 'schema_grouped.json')
#
# Produce a schema.yml file if CONFIG_EXPORT == 4
#
elif config_dump == 4:
print("Generating schema.yml ...")
try:
import yaml
except ImportError:
env.Execute(env.VerboseAction(
'$PYTHONEXE -m pip install "pyyaml"',
"Installing YAML for schema.yml export",
))
import yaml
schema.dump_yaml(conf_schema, build_path / 'schema.yml')
# Append the source code version and date
data['VERSION'] = {}
data['VERSION']['DETAILED_BUILD_VERSION'] = resolved_defines['DETAILED_BUILD_VERSION']
data['VERSION']['STRING_DISTRIBUTION_DATE'] = resolved_defines['STRING_DISTRIBUTION_DATE']
try:
curver = subprocess.check_output(["git", "describe", "--match=NeVeRmAtCh", "--always"]).strip()
data['VERSION']['GIT_REF'] = curver.decode()
except:
pass
#
# Produce a JSON file for CONFIGURATION_EMBEDDING or CONFIG_EXPORT == 1
#
if config_dump == 1 or 'CONFIGURATION_EMBEDDING' in defines:
with marlin_json.open('w') as outfile:
json.dump(data, outfile, separators=(',', ':'))
#
# The rest only applies to CONFIGURATION_EMBEDDING
#
if not 'CONFIGURATION_EMBEDDING' in defines:
return
# Compress the JSON file as much as we can
compress_file(marlin_json, marlin_zip)
# Generate a C source file for storing this array
with open('Marlin/src/mczip.h','wb') as result_file:
result_file.write(
b'#ifndef NO_CONFIGURATION_EMBEDDING_WARNING\n'
+ b' #warning "Generated file \'mc.zip\' is embedded (Define NO_CONFIGURATION_EMBEDDING_WARNING to suppress this warning.)"\n'
+ b'#endif\n'
+ b'const unsigned char mc_zip[] PROGMEM = {\n '
)
count = 0
for b in (build_path / 'mc.zip').open('rb').read():
result_file.write(b' 0x%02X,' % b)
count += 1
if count % 16 == 0:
result_file.write(b'\n ')
if count % 16:
result_file.write(b'\n')
result_file.write(b'};\n')