mirror of
https://github.com/espressif/esp-idf.git
synced 2025-11-04 09:01:40 +01:00
371 lines
18 KiB
Python
371 lines
18 KiB
Python
#!/usr/bin/env python
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#
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# Checks all public headers in IDF in the ci
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#
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# SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
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# SPDX-License-Identifier: Apache-2.0
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#
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from __future__ import print_function, unicode_literals
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import argparse
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import fnmatch
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import json
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import os
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import queue
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import re
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import subprocess
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import tempfile
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from io import open
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from threading import Event, Thread
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from typing import List, Optional, Set, Tuple, Union
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class HeaderFailed(Exception):
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"""Base header failure exeption"""
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pass
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class HeaderFailedSdkconfig(HeaderFailed):
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def __str__(self) -> str:
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return 'Sdkconfig Error'
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class HeaderFailedBuildError(HeaderFailed):
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def __str__(self) -> str:
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return 'Header Build Error'
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class HeaderFailedCppGuardMissing(HeaderFailed):
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def __str__(self) -> str:
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return 'Header Missing C++ Guard'
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class HeaderFailedContainsCode(HeaderFailed):
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def __str__(self) -> str:
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return 'Header Produced non-zero object'
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# Creates a temp file and returns both output as a string and a file name
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#
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def exec_cmd_to_temp_file(what: List, suffix: str='') -> Tuple[int, str, str, str, str]:
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out_file = tempfile.NamedTemporaryFile(suffix=suffix, delete=False)
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rc, out, err, cmd = exec_cmd(what, out_file)
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with open(out_file.name, 'r', encoding='utf-8') as f:
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out = f.read()
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return rc, out, err, out_file.name, cmd
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def exec_cmd(what: List, out_file: Union['tempfile._TemporaryFileWrapper[bytes]', int]=subprocess.PIPE) -> Tuple[int, str, str, str]:
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p = subprocess.Popen(what, stdin=subprocess.PIPE, stdout=out_file, stderr=subprocess.PIPE)
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output_b, err_b = p.communicate()
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rc = p.returncode
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output: str = output_b.decode('utf-8') if output_b is not None else ''
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err: str = err_b.decode('utf-8') if err_b is not None else ''
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return rc, output, err, ' '.join(what)
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class PublicHeaderChecker:
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# Intermediate results
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COMPILE_ERR_REF_CONFIG_HDR_FAILED = 1 # -> Cannot compile and failed with injected SDKCONFIG #error (header FAILs)
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COMPILE_ERR_ERROR_MACRO_HDR_OK = 2 # -> Cannot compile, but failed with "#error" directive (header seems OK)
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COMPILE_ERR_HDR_FAILED = 3 # -> Cannot compile with another issue, logged if verbose (header FAILs)
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PREPROC_OUT_ZERO_HDR_OK = 4 # -> Both preprocessors produce zero out (header file is OK)
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PREPROC_OUT_SAME_HRD_FAILED = 5 # -> Both preprocessors produce the same, non-zero output (header file FAILs)
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PREPROC_OUT_DIFFERENT_WITH_EXT_C_HDR_OK = 6 # -> Both preprocessors produce different, non-zero output with extern "C" (header seems OK)
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PREPROC_OUT_DIFFERENT_NO_EXT_C_HDR_FAILED = 7 # -> Both preprocessors produce different, non-zero output without extern "C" (header fails)
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def log(self, message: str, debug: bool=False) -> None:
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if self.verbose or debug:
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print(message)
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def __init__(self, verbose: bool=False, jobs: int=1, prefix: Optional[str]=None) -> None:
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self.gcc = '{}gcc'.format(prefix)
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self.gpp = '{}g++'.format(prefix)
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self.verbose = verbose
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self.jobs = jobs
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self.prefix = prefix
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self.extern_c = re.compile(r'extern "C"')
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self.error_macro = re.compile(r'#error')
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self.error_orphan_kconfig = re.compile(r'#error CONFIG_VARS_USED_WHILE_SDKCONFIG_NOT_INCLUDED')
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self.kconfig_macro = re.compile(r'\bCONFIG_[A-Z0-9_]+')
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self.assembly_nocode = r'^\s*(\.file|\.text|\.ident|\.option|\.attribute).*$'
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self.check_threads: List[Thread] = []
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self.job_queue: queue.Queue = queue.Queue()
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self.failed_queue: queue.Queue = queue.Queue()
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self.terminate = Event()
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def __enter__(self) -> 'PublicHeaderChecker':
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for i in range(self.jobs):
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t = Thread(target=self.check_headers, args=(i, ))
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self.check_threads.append(t)
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t.start()
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return self
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def __exit__(self, exc_type: str, exc_value: str, traceback: str) -> None:
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self.terminate.set()
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for t in self.check_threads:
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t.join()
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# thread function process incoming header file from a queue
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def check_headers(self, num: int) -> None:
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while not self.terminate.is_set():
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if not self.job_queue.empty():
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task = self.job_queue.get()
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if task is None:
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self.terminate.set()
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else:
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try:
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self.check_one_header(task, num)
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except HeaderFailed as e:
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self.failed_queue.put('{}: Failed! {}'.format(task, e))
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except Exception as e:
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# Makes sure any unexpected exceptions causes the program to terminate
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self.failed_queue.put('{}: Failed! {}'.format(task, e))
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self.terminate.set()
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raise
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def get_failed(self) -> List:
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return list(self.failed_queue.queue)
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def join(self) -> None:
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for t in self.check_threads:
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while t.is_alive() and not self.terminate.is_set():
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t.join(1) # joins with timeout to respond to keyboard interrupt
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# Checks one header calling:
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# - preprocess_one_header() to test and compare preprocessor outputs
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# - check_no_code() to test if header contains some executable code
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# Procedure
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# 1) Preprocess the include file with C preprocessor and with CPP preprocessor
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# - Pass the test if the preprocessor outputs are the same and whitespaces only (#define only header)
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# - Fail the test if the preprocessor outputs are the same (but with some code)
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# - If outputs different, continue with 2)
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# 2) Strip out all include directives to generate "temp.h"
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# 3) Preprocess the temp.h the same way in (1)
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# - Pass the test if the preprocessor outputs are the same and whitespaces only (#include only header)
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# - Fail the test if the preprocessor outputs are the same (but with some code)
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# - If outputs different, pass the test
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# 4) If header passed the steps 1) and 3) test that it produced zero assembly code
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def check_one_header(self, header: str, num: int) -> None:
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res = self.preprocess_one_header(header, num)
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if res == self.COMPILE_ERR_REF_CONFIG_HDR_FAILED:
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raise HeaderFailedSdkconfig()
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elif res == self.COMPILE_ERR_ERROR_MACRO_HDR_OK:
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return self.compile_one_header(header)
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elif res == self.COMPILE_ERR_HDR_FAILED:
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raise HeaderFailedBuildError()
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elif res == self.PREPROC_OUT_ZERO_HDR_OK:
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return self.compile_one_header(header)
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elif res == self.PREPROC_OUT_SAME_HRD_FAILED:
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raise HeaderFailedCppGuardMissing()
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else:
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self.compile_one_header(header)
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temp_header = None
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try:
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_, _, _, temp_header, _ = exec_cmd_to_temp_file(['sed', '/#include/d; /#error/d', header], suffix='.h')
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res = self.preprocess_one_header(temp_header, num, ignore_sdkconfig_issue=True)
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if res == self.PREPROC_OUT_SAME_HRD_FAILED:
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raise HeaderFailedCppGuardMissing()
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elif res == self.PREPROC_OUT_DIFFERENT_NO_EXT_C_HDR_FAILED:
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raise HeaderFailedCppGuardMissing()
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finally:
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if temp_header:
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os.unlink(temp_header)
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def compile_one_header(self, header: str) -> None:
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rc, out, err, cmd = exec_cmd([self.gcc, '-S', '-o-', '-include', header, self.main_c] + self.include_dir_flags)
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if rc == 0:
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if not re.sub(self.assembly_nocode, '', out, flags=re.M).isspace():
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raise HeaderFailedContainsCode()
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return # Header OK: produced zero code
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self.log('{}: FAILED: compilation issue'.format(header), True)
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self.log(err, True)
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self.log('\nCompilation command failed:\n{}\n'.format(cmd), True)
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raise HeaderFailedBuildError()
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def preprocess_one_header(self, header: str, num: int, ignore_sdkconfig_issue: bool=False) -> int:
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all_compilation_flags = ['-w', '-P', '-E', '-DESP_PLATFORM', '-include', header, self.main_c] + self.include_dir_flags
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if not ignore_sdkconfig_issue:
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# just strip commnets to check for CONFIG_... macros
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rc, out, err, _ = exec_cmd([self.gcc, '-fpreprocessed', '-dD', '-P', '-E', header] + self.include_dir_flags)
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if re.search(self.kconfig_macro, out):
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# enable defined #error if sdkconfig.h not included
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all_compilation_flags.append('-DIDF_CHECK_SDKCONFIG_INCLUDED')
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try:
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# compile with C++, check for errors, outputs for a temp file
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rc, cpp_out, err, cpp_out_file, cmd = exec_cmd_to_temp_file([self.gpp, '--std=c++17'] + all_compilation_flags)
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if rc != 0:
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if re.search(self.error_macro, err):
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if re.search(self.error_orphan_kconfig, err):
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self.log('{}: CONFIG_VARS_USED_WHILE_SDKCONFIG_NOT_INCLUDED'.format(header), True)
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return self.COMPILE_ERR_REF_CONFIG_HDR_FAILED
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self.log('{}: Error directive failure: OK'.format(header))
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return self.COMPILE_ERR_ERROR_MACRO_HDR_OK
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self.log('{}: FAILED: compilation issue'.format(header), True)
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self.log(err, True)
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self.log('\nCompilation command failed:\n{}\n'.format(cmd), True)
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return self.COMPILE_ERR_HDR_FAILED
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# compile with C compiler, outputs to another temp file
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rc, _, err, c99_out_file, _ = exec_cmd_to_temp_file([self.gcc, '--std=c99'] + all_compilation_flags)
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if rc != 0:
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self.log('{} FAILED should never happen'.format(header))
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return self.COMPILE_ERR_HDR_FAILED
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# diff the two outputs
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rc, diff, err, _ = exec_cmd(['diff', c99_out_file, cpp_out_file])
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if not diff or diff.isspace():
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if not cpp_out or cpp_out.isspace():
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self.log('{} The same, but empty out - OK'.format(header))
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return self.PREPROC_OUT_ZERO_HDR_OK
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self.log('{} FAILED C and C++ preprocessor output is the same!'.format(header), True)
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return self.PREPROC_OUT_SAME_HRD_FAILED
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if re.search(self.extern_c, diff):
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self.log('{} extern C present - OK'.format(header))
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return self.PREPROC_OUT_DIFFERENT_WITH_EXT_C_HDR_OK
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self.log('{} Different but no extern C - FAILED'.format(header), True)
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return self.PREPROC_OUT_DIFFERENT_NO_EXT_C_HDR_FAILED
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finally:
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os.unlink(cpp_out_file)
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try:
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os.unlink(c99_out_file)
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except Exception:
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pass
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# Get compilation data from an example to list all public header files
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def list_public_headers(self, ignore_dirs: List, ignore_files: Union[List, Set], only_dir: str=None) -> None:
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idf_path = os.getenv('IDF_PATH')
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if idf_path is None:
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raise RuntimeError("Environment variable 'IDF_PATH' wasn't set.")
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project_dir = os.path.join(idf_path, 'examples', 'get-started', 'blink')
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build_dir = tempfile.mkdtemp()
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sdkconfig = os.path.join(build_dir, 'sdkconfig')
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try:
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os.unlink(os.path.join(project_dir, 'sdkconfig'))
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except FileNotFoundError:
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pass
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subprocess.check_call(['idf.py', '-B', build_dir, f'-DSDKCONFIG={sdkconfig}', 'reconfigure'], cwd=project_dir)
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build_commands_json = os.path.join(build_dir, 'compile_commands.json')
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with open(build_commands_json, 'r', encoding='utf-8') as f:
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build_command = json.load(f)[0]['command'].split()
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include_dir_flags = []
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include_dirs = []
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# process compilation flags (includes and defines)
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for item in build_command:
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if item.startswith('-I'):
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include_dir_flags.append(item)
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if 'components' in item:
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include_dirs.append(item[2:]) # Removing the leading "-I"
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if item.startswith('-D'):
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include_dir_flags.append(item.replace('\\','')) # removes escaped quotes, eg: -DMBEDTLS_CONFIG_FILE=\\\"mbedtls/esp_config.h\\\"
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include_dir_flags.append('-I' + os.path.join(build_dir, 'config'))
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include_dir_flags.append('-DCI_HEADER_CHECK')
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sdkconfig_h = os.path.join(build_dir, 'config', 'sdkconfig.h')
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# prepares a main_c file for easier sdkconfig checks and avoid compilers warning when compiling headers directly
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with open(sdkconfig_h, 'a') as f:
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f.write('#define IDF_SDKCONFIG_INCLUDED')
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main_c = os.path.join(build_dir, 'compile.c')
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with open(main_c, 'w') as f:
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f.write('#if defined(IDF_CHECK_SDKCONFIG_INCLUDED) && ! defined(IDF_SDKCONFIG_INCLUDED)\n'
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'#error CONFIG_VARS_USED_WHILE_SDKCONFIG_NOT_INCLUDED\n'
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'#endif')
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# processes public include dirs, removing ignored files
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all_include_files = []
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files_to_check = []
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for d in include_dirs:
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if only_dir is not None and not os.path.relpath(d, idf_path).startswith(only_dir):
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self.log('{} - directory ignored (not in "{}")'.format(d, only_dir))
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continue
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if os.path.relpath(d, idf_path).startswith(tuple(ignore_dirs)):
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self.log('{} - directory ignored'.format(d))
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continue
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for root, dirnames, filenames in os.walk(d):
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for filename in fnmatch.filter(filenames, '*.h'):
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all_include_files.append(os.path.join(root, filename))
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self.main_c = main_c
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self.include_dir_flags = include_dir_flags
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ignore_files = set(ignore_files)
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# processes public include files, removing ignored files
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for file_name in all_include_files:
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rel_path_file = os.path.relpath(file_name, idf_path)
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if any([os.path.commonprefix([d, rel_path_file]) == d for d in ignore_dirs]):
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self.log('{} - file ignored (inside ignore dir)'.format(file_name))
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continue
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if rel_path_file in ignore_files:
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self.log('{} - file ignored'.format(file_name))
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continue
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files_to_check.append(file_name)
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# removes duplicates and places headers to a work queue
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for file_name in set(files_to_check):
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self.job_queue.put(file_name)
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self.job_queue.put(None) # to indicate the last job
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def check_all_headers() -> None:
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parser = argparse.ArgumentParser('Public header checker file', formatter_class=argparse.RawDescriptionHelpFormatter, epilog='''\
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Tips for fixing failures reported by this script
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------------------------------------------------
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This checker validates all public headers to detect these types of issues:
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1) "Sdkconfig Error": Using SDK config macros without including "sdkconfig.h"
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* Check if the failing include file or any other included file uses "CONFIG_..." prefixed macros
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2) "Header Build Error": Header itself is not compilable (missing includes, macros, types)
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* Check that all referenced macros, types are available (defined or included)
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* Check that all included header files are available (included in paths)
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* Check for possible compilation issues
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* Try to compile only the offending header file
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3) "Header Missing C++ Guard": Preprocessing the header by C and C++ should produce different output
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* Check if the "#ifdef __cplusplus" header sentinels are present
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4) "Header Produced non-zero object": Header contains some object, a definition
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* Check if no definition is present in the offending header file
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Notes:
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* The script validates *all* header files (recursively) in public folders for all components.
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* The script locates include paths from running a default build of "examples/get-started/blink'
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* The script does not support any other targets than esp32
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General tips:
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* Use "-d" argument to make the script check only the offending header file
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* Use "-v" argument to produce more verbose output
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* Copy, paste and execute the compilation commands to reproduce build errors (script prints out
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the entire compilation command line with absolute paths)
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''')
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parser.add_argument('--verbose', '-v', help='enables verbose mode', action='store_true')
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parser.add_argument('--jobs', '-j', help='number of jobs to run checker', default=1, type=int)
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parser.add_argument('--prefix', '-p', help='compiler prefix', default='xtensa-esp32-elf-', type=str)
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parser.add_argument('--exclude-file', '-e', help='exception file', default='check_public_headers_exceptions.txt', type=str)
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parser.add_argument('--only-dir', '-d', help='reduce the analysis to this directory only', default=None, type=str)
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args = parser.parse_args()
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# process excluded files and dirs
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exclude_file = os.path.join(os.path.dirname(__file__), args.exclude_file)
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with open(exclude_file, 'r', encoding='utf-8') as f:
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lines = [line.rstrip() for line in f]
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ignore_files = []
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ignore_dirs = []
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for line in lines:
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if not line or line.isspace() or line.startswith('#'):
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continue
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if os.path.isdir(line):
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ignore_dirs.append(line)
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else:
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ignore_files.append(line)
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# start header check
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with PublicHeaderChecker(args.verbose, args.jobs, args.prefix) as header_check:
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header_check.list_public_headers(ignore_dirs, ignore_files, only_dir=args.only_dir)
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try:
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header_check.join()
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failures = header_check.get_failed()
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if len(failures) > 0:
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for failed in failures:
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print(failed)
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print(parser.epilog)
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exit(1)
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print('No errors found')
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except KeyboardInterrupt:
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print('Keyboard interrupt')
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if __name__ == '__main__':
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check_all_headers()
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