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#!/usr/bin/env python3
# Copyright (c) 2020-2021 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
'''
Test script for symbol-check.py
'''
import os
import subprocess
from typing import List
import unittest
from utils import determine_wellknown_cmd
def call_symbol_check(cc: List[str], source, executable, options):
# This should behave the same as AC_TRY_LINK, so arrange well-known flags
# in the same order as autoconf would.
#
# See the definitions for ac_link in autoconf's lib/autoconf/c.m4 file for
# reference.
env_flags: List[str] = []
for var in ['CFLAGS', 'CPPFLAGS', 'LDFLAGS']:
env_flags += filter(None, os.environ.get(var, '').split(' '))
subprocess.run([*cc,source,'-o',executable] + env_flags + options, check=True)
p = subprocess.run(['./contrib/devtools/symbol-check.py',executable], stdout=subprocess.PIPE, universal_newlines=True)
os.remove(source)
os.remove(executable)
return (p.returncode, p.stdout.rstrip())
def get_machine(cc: List[str]):
p = subprocess.run([*cc,'-dumpmachine'], stdout=subprocess.PIPE, universal_newlines=True)
return p.stdout.rstrip()
class TestSymbolChecks(unittest.TestCase):
def test_ELF(self):
source = 'test1.c'
executable = 'test1'
cc = determine_wellknown_cmd('CC', 'gcc')
# there's no way to do this test for RISC-V at the moment; we build for
# RISC-V in a glibc 2.27 environment and we allow all symbols from 2.27.
if 'riscv' in get_machine(cc):
self.skipTest("test not available for RISC-V")
# nextup was introduced in GLIBC 2.24, so is newer than our supported
# glibc (2.18), and available in our release build environment (2.24).
with open(source, 'w', encoding="utf8") as f:
f.write('''
#define _GNU_SOURCE
#include <math.h>
double nextup(double x);
int main()
{
nextup(3.14);
return 0;
}
''')
self.assertEqual(call_symbol_check(cc, source, executable, ['-lm']),
(1, executable + ': symbol nextup from unsupported version GLIBC_2.24(3)\n' +
executable + ': failed IMPORTED_SYMBOLS'))
# -lutil is part of the libc6 package so a safe bet that it's installed
# it's also out of context enough that it's unlikely to ever become a real dependency
source = 'test2.c'
executable = 'test2'
with open(source, 'w', encoding="utf8") as f:
f.write('''
#include <utmp.h>
int main()
{
login(0);
return 0;
}
''')
self.assertEqual(call_symbol_check(cc, source, executable, ['-lutil']),
(1, executable + ': libutil.so.1 is not in ALLOWED_LIBRARIES!\n' +
executable + ': failed LIBRARY_DEPENDENCIES'))
# finally, check a simple conforming binary
source = 'test3.c'
executable = 'test3'
with open(source, 'w', encoding="utf8") as f:
f.write('''
#include <stdio.h>
int main()
{
printf("42");
return 0;
}
''')
self.assertEqual(call_symbol_check(cc, source, executable, []),
(0, ''))
def test_MACHO(self):
source = 'test1.c'
executable = 'test1'
cc = determine_wellknown_cmd('CC', 'clang')
with open(source, 'w', encoding="utf8") as f:
f.write('''
#include <expat.h>
int main()
{
XML_ExpatVersion();
return 0;
}
''')
self.assertEqual(call_symbol_check(cc, source, executable, ['-lexpat', '-Wl,-platform_version','-Wl,macos', '-Wl,11.4', '-Wl,11.4']),
(1, 'libexpat.1.dylib is not in ALLOWED_LIBRARIES!\n' +
f'{executable}: failed DYNAMIC_LIBRARIES MIN_OS SDK'))
source = 'test2.c'
executable = 'test2'
with open(source, 'w', encoding="utf8") as f:
f.write('''
#include <CoreGraphics/CoreGraphics.h>
int main()
{
CGMainDisplayID();
return 0;
}
''')
self.assertEqual(call_symbol_check(cc, source, executable, ['-framework', 'CoreGraphics', '-Wl,-platform_version','-Wl,macos', '-Wl,11.4', '-Wl,11.4']),
(1, f'{executable}: failed MIN_OS SDK'))
source = 'test3.c'
executable = 'test3'
with open(source, 'w', encoding="utf8") as f:
f.write('''
int main()
{
return 0;
}
''')
self.assertEqual(call_symbol_check(cc, source, executable, ['-Wl,-platform_version','-Wl,macos', '-Wl,10.15', '-Wl,11.4']),
(1, f'{executable}: failed SDK'))
def test_PE(self):
source = 'test1.c'
executable = 'test1.exe'
cc = determine_wellknown_cmd('CC', 'x86_64-w64-mingw32-gcc')
with open(source, 'w', encoding="utf8") as f:
f.write('''
#include <pdh.h>
int main()
{
PdhConnectMachineA(NULL);
return 0;
}
''')
self.assertEqual(call_symbol_check(cc, source, executable, ['-lpdh', '-Wl,--major-subsystem-version', '-Wl,6', '-Wl,--minor-subsystem-version', '-Wl,1']),
(1, 'pdh.dll is not in ALLOWED_LIBRARIES!\n' +
executable + ': failed DYNAMIC_LIBRARIES'))
source = 'test2.c'
executable = 'test2.exe'
with open(source, 'w', encoding="utf8") as f:
f.write('''
int main()
{
return 0;
}
''')
self.assertEqual(call_symbol_check(cc, source, executable, ['-Wl,--major-subsystem-version', '-Wl,9', '-Wl,--minor-subsystem-version', '-Wl,9']),
(1, executable + ': failed SUBSYSTEM_VERSION'))
source = 'test3.c'
executable = 'test3.exe'
with open(source, 'w', encoding="utf8") as f:
f.write('''
#include <combaseapi.h>
int main()
{
CoFreeUnusedLibrariesEx(0,0);
return 0;
}
''')
self.assertEqual(call_symbol_check(cc, source, executable, ['-lole32', '-Wl,--major-subsystem-version', '-Wl,6', '-Wl,--minor-subsystem-version', '-Wl,1']),
(0, ''))
if __name__ == '__main__':
unittest.main()
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