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Diffstat (limited to 'contrib/gitian/symbol-check.py')
| -rwxr-xr-x | contrib/gitian/symbol-check.py | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/contrib/gitian/symbol-check.py b/contrib/gitian/symbol-check.py deleted file mode 100755 index 6808e77da..000000000 --- a/contrib/gitian/symbol-check.py +++ /dev/null @@ -1,163 +0,0 @@ -#!/usr/bin/env python3 -# Copyright (c) 2014 Wladimir J. van der Laan -# Distributed under the MIT software license, see the accompanying -# file COPYING or http://www.opensource.org/licenses/mit-license.php. -''' -A script to check that the (Linux) executables produced by gitian only contain -allowed gcc, glibc and libstdc++ version symbols. This makes sure they are -still compatible with the minimum supported Linux distribution versions. - -Example usage: - - find ../gitian-builder/build -type f -executable | xargs python contrib/devtools/symbol-check.py -''' -import subprocess -import re -import sys -import os - -# Debian 6.0.9 (Squeeze) has: -# -# - g++ version 4.4.5 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=g%2B%2B) -# - libc version 2.11.3 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=libc6) -# - libstdc++ version 4.4.5 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=libstdc%2B%2B6) -# -# Ubuntu 10.04.4 (Lucid Lynx) has: -# -# - g++ version 4.4.3 (http://packages.ubuntu.com/search?keywords=g%2B%2B&searchon=names&suite=lucid§ion=all) -# - libc version 2.11.1 (http://packages.ubuntu.com/search?keywords=libc6&searchon=names&suite=lucid§ion=all) -# - libstdc++ version 4.4.3 (http://packages.ubuntu.com/search?suite=lucid§ion=all&arch=any&keywords=libstdc%2B%2B&searchon=names) -# -# Taking the minimum of these as our target. -# -# According to GNU ABI document (http://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html) this corresponds to: -# GCC 4.4.0: GCC_4.4.0 -# GCC 4.4.2: GLIBCXX_3.4.13, CXXABI_1.3.3 -# (glibc) GLIBC_2_11 -# -MAX_VERSIONS = { -'GCC': (4,4,0), -'CXXABI': (1,3,3), -'GLIBCXX': (3,4,13), -'GLIBC': (2,11) -} -# See here for a description of _IO_stdin_used: -# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=634261#109 - -# Ignore symbols that are exported as part of every executable -IGNORE_EXPORTS = { -'_edata', '_end', '_init', '__bss_start', '_fini', '_IO_stdin_used', 'stdin', 'stdout', 'stderr' -} -READELF_CMD = os.getenv('READELF', '/usr/bin/readelf') -CPPFILT_CMD = os.getenv('CPPFILT', '/usr/bin/c++filt') -# Allowed NEEDED libraries -ALLOWED_LIBRARIES = { -# bitcoind and bitcoin-qt -'libgcc_s.so.1', # GCC base support -'libc.so.6', # C library -'libpthread.so.0', # threading -'libanl.so.1', # DNS resolve -'libm.so.6', # math library -'librt.so.1', # real-time (clock) -'ld-linux-x86-64.so.2', # 64-bit dynamic linker -'ld-linux.so.2', # 32-bit dynamic linker -# bitcoin-qt only -'libX11-xcb.so.1', # part of X11 -'libX11.so.6', # part of X11 -'libxcb.so.1', # part of X11 -'libfontconfig.so.1', # font support -'libfreetype.so.6', # font parsing -'libdl.so.2' # programming interface to dynamic linker -} - -class CPPFilt(object): - ''' - Demangle C++ symbol names. - - Use a pipe to the 'c++filt' command. - ''' - def __init__(self): - self.proc = subprocess.Popen(CPPFILT_CMD, stdin=subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines=True) - - def __call__(self, mangled): - self.proc.stdin.write(mangled + '\n') - self.proc.stdin.flush() - return self.proc.stdout.readline().rstrip() - - def close(self): - self.proc.stdin.close() - self.proc.stdout.close() - self.proc.wait() - -def read_symbols(executable, imports=True): - ''' - Parse an ELF executable and return a list of (symbol,version) tuples - for dynamic, imported symbols. - ''' - p = subprocess.Popen([READELF_CMD, '--dyn-syms', '-W', executable], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE, universal_newlines=True) - (stdout, stderr) = p.communicate() - if p.returncode: - raise IOError('Could not read symbols for %s: %s' % (executable, stderr.strip())) - syms = [] - for line in stdout.splitlines(): - line = line.split() - if len(line)>7 and re.match('[0-9]+:$', line[0]): - (sym, _, version) = line[7].partition('@') - is_import = line[6] == 'UND' - if version.startswith('@'): - version = version[1:] - if is_import == imports: - syms.append((sym, version)) - return syms - -def check_version(max_versions, version): - if '_' in version: - (lib, _, ver) = version.rpartition('_') - else: - lib = version - ver = '0' - ver = tuple([int(x) for x in ver.split('.')]) - if not lib in max_versions: - return False - return ver <= max_versions[lib] - -def read_libraries(filename): - p = subprocess.Popen([READELF_CMD, '-d', '-W', filename], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE, universal_newlines=True) - (stdout, stderr) = p.communicate() - if p.returncode: - raise IOError('Error opening file') - libraries = [] - for line in stdout.splitlines(): - tokens = line.split() - if len(tokens)>2 and tokens[1] == '(NEEDED)': - match = re.match('^Shared library: \[(.*)\]$', ' '.join(tokens[2:])) - if match: - libraries.append(match.group(1)) - else: - raise ValueError('Unparseable (NEEDED) specification') - return libraries - -if __name__ == '__main__': - cppfilt = CPPFilt() - retval = 0 - for filename in sys.argv[1:]: - # Check imported symbols - for sym,version in read_symbols(filename, True): - if version and not check_version(MAX_VERSIONS, version): - print('%s: symbol %s from unsupported version %s' % (filename, cppfilt(sym), version)) - retval = 1 - # Check exported symbols - for sym,version in read_symbols(filename, False): - if sym in IGNORE_EXPORTS: - continue - print('%s: export of symbol %s not allowed' % (filename, cppfilt(sym))) - retval = 1 - # Check dependency libraries - for library_name in read_libraries(filename): - if library_name not in ALLOWED_LIBRARIES: - print('%s: NEEDED library %s is not allowed' % (filename, library_name)) - retval = 1 - - sys.exit(retval) - - |