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#!/usr/bin/python
import os
import re
import platform
import logging
import glob
from portage.output import bold, red, blue, yellow, green, nocolor
from stuff import scan
from collect import prepare_search_dirs, parse_revdep_config, collect_libraries_from_dir, collect_binaries_from_dir
from assign import assign_packages
from cache import save_cache
from settings import SETTINGS
def prepare_checks(files_to_check, libraries, bits):
''' Calls scanelf for all files_to_check, then returns found libraries and dependencies
'''
libs = [] # libs found by scanelf
dependencies = [] # list of lists of files (from file_to_check) that uses
# library (for dependencies[id] and libs[id] => id==id)
for line in scan(['-M', str(bits), '-nBF', '%F %n'], files_to_check, SETTINGS['CMD_MAX_ARGS']):
#call_program(['scanelf', '-M', str(bits), '-nBF', '%F %n',]+files_to_check).strip().split('\n'):
r = line.strip().split(' ')
if len(r) < 2: # no dependencies?
continue
deps = r[1].split(',')
for d in deps:
if d in libs:
i = libs.index(d)
dependencies[i].append(r[0])
else:
libs.append(d)
dependencies.append([r[0],])
return (libs, dependencies)
def extract_dependencies_from_la(la, libraries, to_check, logger):
broken = []
for f in la:
if not os.path.exists(f):
continue
for line in open(f, 'r').readlines():
line = line.strip()
if line.startswith('dependency_libs='):
m = re.match("dependency_libs='([^']+)'", line)
if m is not None:
for el in m.group(1).split(' '):
el = el.strip()
if len(el) < 1 or el.startswith('-'):
continue
if el in la or el in libraries:
pass
else:
if to_check:
_break = False
for tc in to_check:
if tc in el:
_break = True
break
if not _break:
continue
logger.info(yellow(' * ') + f + ' is broken (requires: ' + bold(el))
broken.append(f)
return broken
def find_broken(found_libs, system_libraries, to_check):
''' Search for broken libraries.
Check if system_libraries contains found_libs, where
system_libraries is list of obsolute pathes and found_libs
is list of library names.
'''
# join libraries and looking at it as string is way too faster than for-jumping
broken = []
sl = '|'.join(system_libraries)
if not to_check:
for f in found_libs:
if f+'|' not in sl:
broken.append(found_libs.index(f))
else:
for tc in to_check:
for f in found_libs:
if tc in f:# and f+'|' not in sl:
broken.append(found_libs.index(f))
return broken
def main_checks(found_libs, broken, dependencies, logger):
''' Checks for broken dependencies.
found_libs have to be the same as returned by prepare_checks
broken is list of libraries found by scanelf
dependencies is the value returned by prepare_checks
'''
broken_pathes = []
for b in broken:
f = found_libs[b]
logger.info('Broken files that requires: ' + bold(f))
for d in dependencies[b]:
logger.info(yellow(' * ') + d)
broken_pathes.append(d)
return broken_pathes
def analyse(logger=logging, libraries=None, la_libraries=None, libraries_links=None, binaries=None, _libs_to_check=set()):
"""Main program body. It will collect all info and determine the
pkgs needing rebuilding.
@param logger: logger used for logging messages, instance of logging.Logger
class. Can be logging (RootLogger).
@param _libs_to_check Libraries that need to be checked only
@rtype list: list of pkgs that need rebuilding
"""
if libraries and la_libraries and libraries_links and binaries:
logger.info(blue(' * ') + bold('Found a valid cache, skipping collecting phase'))
else:
#TODO: add partial cache (for ex. only libraries) when found for some reason
logger.warn(green(' * ') + bold('Collecting system binaries and libraries'))
bin_dirs, lib_dirs = prepare_search_dirs(logger)
masked_dirs, masked_files, ld = parse_revdep_config()
lib_dirs = lib_dirs.union(ld)
bin_dirs = bin_dirs.union(ld)
masked_dirs = masked_dirs.union(set(['/lib/modules', '/lib32/modules', '/lib64/modules',]))
logger.info(green(' * ') + bold('Collecting dynamic linking informations'))
libraries, la_libraries, libraries_links, symlink_pairs = collect_libraries_from_dir(lib_dirs, masked_dirs, logger)
binaries = collect_binaries_from_dir(bin_dirs, masked_dirs, logger)
if SETTINGS['USE_TMP_FILES']:
save_cache(to_save={'libraries':libraries, 'la_libraries':la_libraries, 'libraries_links':libraries_links, 'binaries':binaries})
logger.debug('Found '+ str(len(libraries)) + ' libraries (+' + str(len(libraries_links)) + ' symlinks) and ' + str(len(binaries)) + ' binaries')
logger.warn(green(' * ') + bold('Checking dynamic linking consistency'))
logger.debug('Search for ' + str(len(binaries)+len(libraries)) + ' within ' + str(len(libraries)+len(libraries_links)))
libs_and_bins = libraries+binaries
#l = []
#for line in call_program(['scanelf', '-M', '64', '-BF', '%F',] + libraries).strip().split('\n'):
#l.append(line)
#libraries = l
found_libs = []
dependencies = []
_bits, linkg = platform.architecture()
if _bits.startswith('32'):
bits = 32
elif _bits.startswith('64'):
bits = 64
for av_bits in glob.glob('/lib[0-9]*') or ('/lib32',):
bits = int(av_bits[4:])
_libraries = scan(['-M', str(bits), '-BF', '%F'], libraries+libraries_links, SETTINGS['CMD_MAX_ARGS'])
#call_program(['scanelf', '-M', str(bits), '-BF', '%F',] + libraries+libraries_links).strip().split('\n')
found_libs, dependencies = prepare_checks(libs_and_bins, _libraries, bits)
broken = find_broken(found_libs, _libraries, _libs_to_check)
broken_la = extract_dependencies_from_la(la_libraries, _libraries, _libs_to_check, logger)
bits /= 2
bits = int(bits)
broken_pathes = main_checks(found_libs, broken, dependencies, logger)
broken_pathes += broken_la
logger.warn(green(' * ') + bold('Assign files to packages'))
return assign_packages(broken_pathes, logger)
if __name__ == '__main__':
print "This script shouldn't be called directly"
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