730 lines
28 KiB
Python
730 lines
28 KiB
Python
import hashlib
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import logging
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import os
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import re
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import tempfile
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import pickle
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import bb.data
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import difflib
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import simplediff
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from bb.checksum import FileChecksumCache
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logger = logging.getLogger('BitBake.SigGen')
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def init(d):
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siggens = [obj for obj in globals().values()
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if type(obj) is type and issubclass(obj, SignatureGenerator)]
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desired = d.getVar("BB_SIGNATURE_HANDLER") or "noop"
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for sg in siggens:
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if desired == sg.name:
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return sg(d)
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break
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else:
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logger.error("Invalid signature generator '%s', using default 'noop'\n"
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"Available generators: %s", desired,
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', '.join(obj.name for obj in siggens))
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return SignatureGenerator(d)
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class SignatureGenerator(object):
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"""
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"""
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name = "noop"
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def __init__(self, data):
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self.basehash = {}
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self.taskhash = {}
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self.runtaskdeps = {}
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self.file_checksum_values = {}
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self.taints = {}
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def finalise(self, fn, d, varient):
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return
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def get_taskhash(self, fn, task, deps, dataCache):
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return "0"
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def writeout_file_checksum_cache(self):
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"""Write/update the file checksum cache onto disk"""
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return
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def stampfile(self, stampbase, file_name, taskname, extrainfo):
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return ("%s.%s.%s" % (stampbase, taskname, extrainfo)).rstrip('.')
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def stampcleanmask(self, stampbase, file_name, taskname, extrainfo):
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return ("%s.%s.%s" % (stampbase, taskname, extrainfo)).rstrip('.')
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def dump_sigtask(self, fn, task, stampbase, runtime):
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return
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def invalidate_task(self, task, d, fn):
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bb.build.del_stamp(task, d, fn)
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def dump_sigs(self, dataCache, options):
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return
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def get_taskdata(self):
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return (self.runtaskdeps, self.taskhash, self.file_checksum_values, self.taints, self.basehash)
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def set_taskdata(self, data):
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self.runtaskdeps, self.taskhash, self.file_checksum_values, self.taints, self.basehash = data
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def reset(self, data):
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self.__init__(data)
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class SignatureGeneratorBasic(SignatureGenerator):
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"""
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"""
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name = "basic"
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def __init__(self, data):
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self.basehash = {}
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self.taskhash = {}
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self.taskdeps = {}
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self.runtaskdeps = {}
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self.file_checksum_values = {}
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self.taints = {}
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self.gendeps = {}
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self.lookupcache = {}
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self.pkgnameextract = re.compile("(?P<fn>.*)\..*")
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self.basewhitelist = set((data.getVar("BB_HASHBASE_WHITELIST") or "").split())
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self.taskwhitelist = None
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self.init_rundepcheck(data)
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checksum_cache_file = data.getVar("BB_HASH_CHECKSUM_CACHE_FILE")
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if checksum_cache_file:
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self.checksum_cache = FileChecksumCache()
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self.checksum_cache.init_cache(data, checksum_cache_file)
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else:
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self.checksum_cache = None
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def init_rundepcheck(self, data):
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self.taskwhitelist = data.getVar("BB_HASHTASK_WHITELIST") or None
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if self.taskwhitelist:
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self.twl = re.compile(self.taskwhitelist)
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else:
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self.twl = None
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def _build_data(self, fn, d):
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ignore_mismatch = ((d.getVar("BB_HASH_IGNORE_MISMATCH") or '') == '1')
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tasklist, gendeps, lookupcache = bb.data.generate_dependencies(d)
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taskdeps = {}
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basehash = {}
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for task in tasklist:
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data = lookupcache[task]
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if data is None:
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bb.error("Task %s from %s seems to be empty?!" % (task, fn))
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data = ''
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gendeps[task] -= self.basewhitelist
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newdeps = gendeps[task]
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seen = set()
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while newdeps:
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nextdeps = newdeps
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seen |= nextdeps
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newdeps = set()
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for dep in nextdeps:
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if dep in self.basewhitelist:
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continue
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gendeps[dep] -= self.basewhitelist
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newdeps |= gendeps[dep]
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newdeps -= seen
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alldeps = sorted(seen)
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for dep in alldeps:
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data = data + dep
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var = lookupcache[dep]
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if var is not None:
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data = data + str(var)
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datahash = hashlib.md5(data.encode("utf-8")).hexdigest()
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k = fn + "." + task
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if not ignore_mismatch and k in self.basehash and self.basehash[k] != datahash:
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bb.error("When reparsing %s, the basehash value changed from %s to %s. The metadata is not deterministic and this needs to be fixed." % (k, self.basehash[k], datahash))
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self.basehash[k] = datahash
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taskdeps[task] = alldeps
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self.taskdeps[fn] = taskdeps
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self.gendeps[fn] = gendeps
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self.lookupcache[fn] = lookupcache
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return taskdeps
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def finalise(self, fn, d, variant):
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mc = d.getVar("__BBMULTICONFIG", False) or ""
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if variant or mc:
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fn = bb.cache.realfn2virtual(fn, variant, mc)
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try:
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taskdeps = self._build_data(fn, d)
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except bb.parse.SkipRecipe:
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raise
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except:
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bb.warn("Error during finalise of %s" % fn)
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raise
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#Slow but can be useful for debugging mismatched basehashes
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#for task in self.taskdeps[fn]:
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# self.dump_sigtask(fn, task, d.getVar("STAMP"), False)
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for task in taskdeps:
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d.setVar("BB_BASEHASH_task-%s" % task, self.basehash[fn + "." + task])
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def rundep_check(self, fn, recipename, task, dep, depname, dataCache):
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# Return True if we should keep the dependency, False to drop it
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# We only manipulate the dependencies for packages not in the whitelist
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if self.twl and not self.twl.search(recipename):
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# then process the actual dependencies
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if self.twl.search(depname):
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return False
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return True
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def read_taint(self, fn, task, stampbase):
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taint = None
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try:
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with open(stampbase + '.' + task + '.taint', 'r') as taintf:
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taint = taintf.read()
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except IOError:
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pass
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return taint
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def get_taskhash(self, fn, task, deps, dataCache):
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k = fn + "." + task
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data = dataCache.basetaskhash[k]
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self.basehash[k] = data
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self.runtaskdeps[k] = []
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self.file_checksum_values[k] = []
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recipename = dataCache.pkg_fn[fn]
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for dep in sorted(deps, key=clean_basepath):
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depname = dataCache.pkg_fn[self.pkgnameextract.search(dep).group('fn')]
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if not self.rundep_check(fn, recipename, task, dep, depname, dataCache):
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continue
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if dep not in self.taskhash:
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bb.fatal("%s is not in taskhash, caller isn't calling in dependency order?", dep)
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data = data + self.taskhash[dep]
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self.runtaskdeps[k].append(dep)
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if task in dataCache.file_checksums[fn]:
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if self.checksum_cache:
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checksums = self.checksum_cache.get_checksums(dataCache.file_checksums[fn][task], recipename)
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else:
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checksums = bb.fetch2.get_file_checksums(dataCache.file_checksums[fn][task], recipename)
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for (f,cs) in checksums:
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self.file_checksum_values[k].append((f,cs))
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if cs:
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data = data + cs
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taskdep = dataCache.task_deps[fn]
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if 'nostamp' in taskdep and task in taskdep['nostamp']:
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# Nostamp tasks need an implicit taint so that they force any dependent tasks to run
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import uuid
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taint = str(uuid.uuid4())
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data = data + taint
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self.taints[k] = "nostamp:" + taint
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taint = self.read_taint(fn, task, dataCache.stamp[fn])
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if taint:
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data = data + taint
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self.taints[k] = taint
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logger.warning("%s is tainted from a forced run" % k)
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h = hashlib.md5(data.encode("utf-8")).hexdigest()
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self.taskhash[k] = h
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#d.setVar("BB_TASKHASH_task-%s" % task, taskhash[task])
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return h
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def writeout_file_checksum_cache(self):
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"""Write/update the file checksum cache onto disk"""
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if self.checksum_cache:
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self.checksum_cache.save_extras()
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self.checksum_cache.save_merge()
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else:
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bb.fetch2.fetcher_parse_save()
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bb.fetch2.fetcher_parse_done()
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def dump_sigtask(self, fn, task, stampbase, runtime):
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k = fn + "." + task
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referencestamp = stampbase
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if isinstance(runtime, str) and runtime.startswith("customfile"):
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sigfile = stampbase
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referencestamp = runtime[11:]
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elif runtime and k in self.taskhash:
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sigfile = stampbase + "." + task + ".sigdata" + "." + self.taskhash[k]
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else:
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sigfile = stampbase + "." + task + ".sigbasedata" + "." + self.basehash[k]
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bb.utils.mkdirhier(os.path.dirname(sigfile))
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data = {}
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data['task'] = task
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data['basewhitelist'] = self.basewhitelist
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data['taskwhitelist'] = self.taskwhitelist
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data['taskdeps'] = self.taskdeps[fn][task]
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data['basehash'] = self.basehash[k]
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data['gendeps'] = {}
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data['varvals'] = {}
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data['varvals'][task] = self.lookupcache[fn][task]
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for dep in self.taskdeps[fn][task]:
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if dep in self.basewhitelist:
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continue
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data['gendeps'][dep] = self.gendeps[fn][dep]
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data['varvals'][dep] = self.lookupcache[fn][dep]
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if runtime and k in self.taskhash:
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data['runtaskdeps'] = self.runtaskdeps[k]
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data['file_checksum_values'] = [(os.path.basename(f), cs) for f,cs in self.file_checksum_values[k]]
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data['runtaskhashes'] = {}
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for dep in data['runtaskdeps']:
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data['runtaskhashes'][dep] = self.taskhash[dep]
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data['taskhash'] = self.taskhash[k]
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taint = self.read_taint(fn, task, referencestamp)
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if taint:
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data['taint'] = taint
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if runtime and k in self.taints:
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if 'nostamp:' in self.taints[k]:
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data['taint'] = self.taints[k]
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computed_basehash = calc_basehash(data)
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if computed_basehash != self.basehash[k]:
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bb.error("Basehash mismatch %s versus %s for %s" % (computed_basehash, self.basehash[k], k))
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if runtime and k in self.taskhash:
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computed_taskhash = calc_taskhash(data)
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if computed_taskhash != self.taskhash[k]:
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bb.error("Taskhash mismatch %s versus %s for %s" % (computed_taskhash, self.taskhash[k], k))
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sigfile = sigfile.replace(self.taskhash[k], computed_taskhash)
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fd, tmpfile = tempfile.mkstemp(dir=os.path.dirname(sigfile), prefix="sigtask.")
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try:
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with os.fdopen(fd, "wb") as stream:
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p = pickle.dump(data, stream, -1)
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stream.flush()
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os.chmod(tmpfile, 0o664)
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os.rename(tmpfile, sigfile)
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except (OSError, IOError) as err:
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try:
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os.unlink(tmpfile)
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except OSError:
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pass
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raise err
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def dump_sigfn(self, fn, dataCaches, options):
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if fn in self.taskdeps:
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for task in self.taskdeps[fn]:
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tid = fn + ":" + task
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(mc, _, _) = bb.runqueue.split_tid(tid)
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k = fn + "." + task
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if k not in self.taskhash:
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continue
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if dataCaches[mc].basetaskhash[k] != self.basehash[k]:
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bb.error("Bitbake's cached basehash does not match the one we just generated (%s)!" % k)
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bb.error("The mismatched hashes were %s and %s" % (dataCaches[mc].basetaskhash[k], self.basehash[k]))
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self.dump_sigtask(fn, task, dataCaches[mc].stamp[fn], True)
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class SignatureGeneratorBasicHash(SignatureGeneratorBasic):
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name = "basichash"
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def stampfile(self, stampbase, fn, taskname, extrainfo, clean=False):
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if taskname != "do_setscene" and taskname.endswith("_setscene"):
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k = fn + "." + taskname[:-9]
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else:
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k = fn + "." + taskname
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if clean:
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h = "*"
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elif k in self.taskhash:
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h = self.taskhash[k]
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else:
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# If k is not in basehash, then error
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h = self.basehash[k]
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return ("%s.%s.%s.%s" % (stampbase, taskname, h, extrainfo)).rstrip('.')
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def stampcleanmask(self, stampbase, fn, taskname, extrainfo):
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return self.stampfile(stampbase, fn, taskname, extrainfo, clean=True)
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def invalidate_task(self, task, d, fn):
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bb.note("Tainting hash to force rebuild of task %s, %s" % (fn, task))
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bb.build.write_taint(task, d, fn)
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def dump_this_task(outfile, d):
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import bb.parse
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fn = d.getVar("BB_FILENAME")
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task = "do_" + d.getVar("BB_CURRENTTASK")
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referencestamp = bb.build.stamp_internal(task, d, None, True)
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bb.parse.siggen.dump_sigtask(fn, task, outfile, "customfile:" + referencestamp)
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def init_colors(enable_color):
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"""Initialise colour dict for passing to compare_sigfiles()"""
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# First set up the colours
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colors = {'color_title': '\033[1;37;40m',
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'color_default': '\033[0;37;40m',
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'color_add': '\033[1;32;40m',
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'color_remove': '\033[1;31;40m',
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}
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# Leave all keys present but clear the values
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if not enable_color:
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for k in colors.keys():
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colors[k] = ''
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return colors
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def worddiff_str(oldstr, newstr, colors=None):
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if not colors:
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colors = init_colors(False)
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diff = simplediff.diff(oldstr.split(' '), newstr.split(' '))
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ret = []
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for change, value in diff:
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value = ' '.join(value)
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if change == '=':
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ret.append(value)
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elif change == '+':
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item = '{color_add}{{+{value}+}}{color_default}'.format(value=value, **colors)
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ret.append(item)
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elif change == '-':
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item = '{color_remove}[-{value}-]{color_default}'.format(value=value, **colors)
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ret.append(item)
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whitespace_note = ''
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if oldstr != newstr and ' '.join(oldstr.split()) == ' '.join(newstr.split()):
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whitespace_note = ' (whitespace changed)'
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return '"%s"%s' % (' '.join(ret), whitespace_note)
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def list_inline_diff(oldlist, newlist, colors=None):
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if not colors:
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colors = init_colors(False)
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diff = simplediff.diff(oldlist, newlist)
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ret = []
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for change, value in diff:
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value = ' '.join(value)
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if change == '=':
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ret.append("'%s'" % value)
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elif change == '+':
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item = '{color_add}+{value}{color_default}'.format(value=value, **colors)
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ret.append(item)
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elif change == '-':
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item = '{color_remove}-{value}{color_default}'.format(value=value, **colors)
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ret.append(item)
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return '[%s]' % (', '.join(ret))
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def clean_basepath(a):
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mc = None
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if a.startswith("multiconfig:"):
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_, mc, a = a.split(":", 2)
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b = a.rsplit("/", 2)[1] + '/' + a.rsplit("/", 2)[2]
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if a.startswith("virtual:"):
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b = b + ":" + a.rsplit(":", 1)[0]
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if mc:
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b = b + ":multiconfig:" + mc
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return b
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def clean_basepaths(a):
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b = {}
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for x in a:
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b[clean_basepath(x)] = a[x]
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return b
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def clean_basepaths_list(a):
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b = []
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for x in a:
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b.append(clean_basepath(x))
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return b
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def compare_sigfiles(a, b, recursecb=None, color=False, collapsed=False):
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output = []
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colors = init_colors(color)
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def color_format(formatstr, **values):
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"""
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Return colour formatted string.
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NOTE: call with the format string, not an already formatted string
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containing values (otherwise you could have trouble with { and }
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characters)
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"""
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if not formatstr.endswith('{color_default}'):
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formatstr += '{color_default}'
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# In newer python 3 versions you can pass both of these directly,
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# but we only require 3.4 at the moment
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formatparams = {}
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formatparams.update(colors)
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formatparams.update(values)
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return formatstr.format(**formatparams)
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with open(a, 'rb') as f:
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p1 = pickle.Unpickler(f)
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a_data = p1.load()
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with open(b, 'rb') as f:
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p2 = pickle.Unpickler(f)
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b_data = p2.load()
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def dict_diff(a, b, whitelist=set()):
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sa = set(a.keys())
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sb = set(b.keys())
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common = sa & sb
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changed = set()
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for i in common:
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if a[i] != b[i] and i not in whitelist:
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changed.add(i)
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added = sb - sa
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removed = sa - sb
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return changed, added, removed
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def file_checksums_diff(a, b):
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from collections import Counter
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# Handle old siginfo format
|
|
if isinstance(a, dict):
|
|
a = [(os.path.basename(f), cs) for f, cs in a.items()]
|
|
if isinstance(b, dict):
|
|
b = [(os.path.basename(f), cs) for f, cs in b.items()]
|
|
# Compare lists, ensuring we can handle duplicate filenames if they exist
|
|
removedcount = Counter(a)
|
|
removedcount.subtract(b)
|
|
addedcount = Counter(b)
|
|
addedcount.subtract(a)
|
|
added = []
|
|
for x in b:
|
|
if addedcount[x] > 0:
|
|
addedcount[x] -= 1
|
|
added.append(x)
|
|
removed = []
|
|
changed = []
|
|
for x in a:
|
|
if removedcount[x] > 0:
|
|
removedcount[x] -= 1
|
|
for y in added:
|
|
if y[0] == x[0]:
|
|
changed.append((x[0], x[1], y[1]))
|
|
added.remove(y)
|
|
break
|
|
else:
|
|
removed.append(x)
|
|
added = [x[0] for x in added]
|
|
removed = [x[0] for x in removed]
|
|
return changed, added, removed
|
|
|
|
if 'basewhitelist' in a_data and a_data['basewhitelist'] != b_data['basewhitelist']:
|
|
output.append(color_format("{color_title}basewhitelist changed{color_default} from '%s' to '%s'") % (a_data['basewhitelist'], b_data['basewhitelist']))
|
|
if a_data['basewhitelist'] and b_data['basewhitelist']:
|
|
output.append("changed items: %s" % a_data['basewhitelist'].symmetric_difference(b_data['basewhitelist']))
|
|
|
|
if 'taskwhitelist' in a_data and a_data['taskwhitelist'] != b_data['taskwhitelist']:
|
|
output.append(color_format("{color_title}taskwhitelist changed{color_default} from '%s' to '%s'") % (a_data['taskwhitelist'], b_data['taskwhitelist']))
|
|
if a_data['taskwhitelist'] and b_data['taskwhitelist']:
|
|
output.append("changed items: %s" % a_data['taskwhitelist'].symmetric_difference(b_data['taskwhitelist']))
|
|
|
|
if a_data['taskdeps'] != b_data['taskdeps']:
|
|
output.append(color_format("{color_title}Task dependencies changed{color_default} from:\n%s\nto:\n%s") % (sorted(a_data['taskdeps']), sorted(b_data['taskdeps'])))
|
|
|
|
if a_data['basehash'] != b_data['basehash'] and not collapsed:
|
|
output.append(color_format("{color_title}basehash changed{color_default} from %s to %s") % (a_data['basehash'], b_data['basehash']))
|
|
|
|
changed, added, removed = dict_diff(a_data['gendeps'], b_data['gendeps'], a_data['basewhitelist'] & b_data['basewhitelist'])
|
|
if changed:
|
|
for dep in changed:
|
|
output.append(color_format("{color_title}List of dependencies for variable %s changed from '{color_default}%s{color_title}' to '{color_default}%s{color_title}'") % (dep, a_data['gendeps'][dep], b_data['gendeps'][dep]))
|
|
if a_data['gendeps'][dep] and b_data['gendeps'][dep]:
|
|
output.append("changed items: %s" % a_data['gendeps'][dep].symmetric_difference(b_data['gendeps'][dep]))
|
|
if added:
|
|
for dep in added:
|
|
output.append(color_format("{color_title}Dependency on variable %s was added") % (dep))
|
|
if removed:
|
|
for dep in removed:
|
|
output.append(color_format("{color_title}Dependency on Variable %s was removed") % (dep))
|
|
|
|
|
|
changed, added, removed = dict_diff(a_data['varvals'], b_data['varvals'])
|
|
if changed:
|
|
for dep in changed:
|
|
oldval = a_data['varvals'][dep]
|
|
newval = b_data['varvals'][dep]
|
|
if newval and oldval and ('\n' in oldval or '\n' in newval):
|
|
diff = difflib.unified_diff(oldval.splitlines(), newval.splitlines(), lineterm='')
|
|
# Cut off the first two lines, since we aren't interested in
|
|
# the old/new filename (they are blank anyway in this case)
|
|
difflines = list(diff)[2:]
|
|
if color:
|
|
# Add colour to diff output
|
|
for i, line in enumerate(difflines):
|
|
if line.startswith('+'):
|
|
line = color_format('{color_add}{line}', line=line)
|
|
difflines[i] = line
|
|
elif line.startswith('-'):
|
|
line = color_format('{color_remove}{line}', line=line)
|
|
difflines[i] = line
|
|
output.append(color_format("{color_title}Variable {var} value changed:{color_default}\n{diff}", var=dep, diff='\n'.join(difflines)))
|
|
elif newval and oldval and (' ' in oldval or ' ' in newval):
|
|
output.append(color_format("{color_title}Variable {var} value changed:{color_default}\n{diff}", var=dep, diff=worddiff_str(oldval, newval, colors)))
|
|
else:
|
|
output.append(color_format("{color_title}Variable {var} value changed from '{color_default}{oldval}{color_title}' to '{color_default}{newval}{color_title}'{color_default}", var=dep, oldval=oldval, newval=newval))
|
|
|
|
if not 'file_checksum_values' in a_data:
|
|
a_data['file_checksum_values'] = {}
|
|
if not 'file_checksum_values' in b_data:
|
|
b_data['file_checksum_values'] = {}
|
|
|
|
changed, added, removed = file_checksums_diff(a_data['file_checksum_values'], b_data['file_checksum_values'])
|
|
if changed:
|
|
for f, old, new in changed:
|
|
output.append(color_format("{color_title}Checksum for file %s changed{color_default} from %s to %s") % (f, old, new))
|
|
if added:
|
|
for f in added:
|
|
output.append(color_format("{color_title}Dependency on checksum of file %s was added") % (f))
|
|
if removed:
|
|
for f in removed:
|
|
output.append(color_format("{color_title}Dependency on checksum of file %s was removed") % (f))
|
|
|
|
if not 'runtaskdeps' in a_data:
|
|
a_data['runtaskdeps'] = {}
|
|
if not 'runtaskdeps' in b_data:
|
|
b_data['runtaskdeps'] = {}
|
|
|
|
if not collapsed:
|
|
if len(a_data['runtaskdeps']) != len(b_data['runtaskdeps']):
|
|
changed = ["Number of task dependencies changed"]
|
|
else:
|
|
changed = []
|
|
for idx, task in enumerate(a_data['runtaskdeps']):
|
|
a = a_data['runtaskdeps'][idx]
|
|
b = b_data['runtaskdeps'][idx]
|
|
if a_data['runtaskhashes'][a] != b_data['runtaskhashes'][b] and not collapsed:
|
|
changed.append("%s with hash %s\n changed to\n%s with hash %s" % (clean_basepath(a), a_data['runtaskhashes'][a], clean_basepath(b), b_data['runtaskhashes'][b]))
|
|
|
|
if changed:
|
|
clean_a = clean_basepaths_list(a_data['runtaskdeps'])
|
|
clean_b = clean_basepaths_list(b_data['runtaskdeps'])
|
|
if clean_a != clean_b:
|
|
output.append(color_format("{color_title}runtaskdeps changed:{color_default}\n%s") % list_inline_diff(clean_a, clean_b, colors))
|
|
else:
|
|
output.append(color_format("{color_title}runtaskdeps changed:"))
|
|
output.append("\n".join(changed))
|
|
|
|
|
|
if 'runtaskhashes' in a_data and 'runtaskhashes' in b_data:
|
|
a = a_data['runtaskhashes']
|
|
b = b_data['runtaskhashes']
|
|
changed, added, removed = dict_diff(a, b)
|
|
if added:
|
|
for dep in added:
|
|
bdep_found = False
|
|
if removed:
|
|
for bdep in removed:
|
|
if b[dep] == a[bdep]:
|
|
#output.append("Dependency on task %s was replaced by %s with same hash" % (dep, bdep))
|
|
bdep_found = True
|
|
if not bdep_found:
|
|
output.append(color_format("{color_title}Dependency on task %s was added{color_default} with hash %s") % (clean_basepath(dep), b[dep]))
|
|
if removed:
|
|
for dep in removed:
|
|
adep_found = False
|
|
if added:
|
|
for adep in added:
|
|
if b[adep] == a[dep]:
|
|
#output.append("Dependency on task %s was replaced by %s with same hash" % (adep, dep))
|
|
adep_found = True
|
|
if not adep_found:
|
|
output.append(color_format("{color_title}Dependency on task %s was removed{color_default} with hash %s") % (clean_basepath(dep), a[dep]))
|
|
if changed:
|
|
for dep in changed:
|
|
if not collapsed:
|
|
output.append(color_format("{color_title}Hash for dependent task %s changed{color_default} from %s to %s") % (clean_basepath(dep), a[dep], b[dep]))
|
|
if callable(recursecb):
|
|
recout = recursecb(dep, a[dep], b[dep])
|
|
if recout:
|
|
if collapsed:
|
|
output.extend(recout)
|
|
else:
|
|
# If a dependent hash changed, might as well print the line above and then defer to the changes in
|
|
# that hash since in all likelyhood, they're the same changes this task also saw.
|
|
output = [output[-1]] + recout
|
|
|
|
a_taint = a_data.get('taint', None)
|
|
b_taint = b_data.get('taint', None)
|
|
if a_taint != b_taint:
|
|
output.append(color_format("{color_title}Taint (by forced/invalidated task) changed{color_default} from %s to %s") % (a_taint, b_taint))
|
|
|
|
return output
|
|
|
|
|
|
def calc_basehash(sigdata):
|
|
task = sigdata['task']
|
|
basedata = sigdata['varvals'][task]
|
|
|
|
if basedata is None:
|
|
basedata = ''
|
|
|
|
alldeps = sigdata['taskdeps']
|
|
for dep in alldeps:
|
|
basedata = basedata + dep
|
|
val = sigdata['varvals'][dep]
|
|
if val is not None:
|
|
basedata = basedata + str(val)
|
|
|
|
return hashlib.md5(basedata.encode("utf-8")).hexdigest()
|
|
|
|
def calc_taskhash(sigdata):
|
|
data = sigdata['basehash']
|
|
|
|
for dep in sigdata['runtaskdeps']:
|
|
data = data + sigdata['runtaskhashes'][dep]
|
|
|
|
for c in sigdata['file_checksum_values']:
|
|
if c[1]:
|
|
data = data + c[1]
|
|
|
|
if 'taint' in sigdata:
|
|
if 'nostamp:' in sigdata['taint']:
|
|
data = data + sigdata['taint'][8:]
|
|
else:
|
|
data = data + sigdata['taint']
|
|
|
|
return hashlib.md5(data.encode("utf-8")).hexdigest()
|
|
|
|
|
|
def dump_sigfile(a):
|
|
output = []
|
|
|
|
with open(a, 'rb') as f:
|
|
p1 = pickle.Unpickler(f)
|
|
a_data = p1.load()
|
|
|
|
output.append("basewhitelist: %s" % (a_data['basewhitelist']))
|
|
|
|
output.append("taskwhitelist: %s" % (a_data['taskwhitelist']))
|
|
|
|
output.append("Task dependencies: %s" % (sorted(a_data['taskdeps'])))
|
|
|
|
output.append("basehash: %s" % (a_data['basehash']))
|
|
|
|
for dep in a_data['gendeps']:
|
|
output.append("List of dependencies for variable %s is %s" % (dep, a_data['gendeps'][dep]))
|
|
|
|
for dep in a_data['varvals']:
|
|
output.append("Variable %s value is %s" % (dep, a_data['varvals'][dep]))
|
|
|
|
if 'runtaskdeps' in a_data:
|
|
output.append("Tasks this task depends on: %s" % (a_data['runtaskdeps']))
|
|
|
|
if 'file_checksum_values' in a_data:
|
|
output.append("This task depends on the checksums of files: %s" % (a_data['file_checksum_values']))
|
|
|
|
if 'runtaskhashes' in a_data:
|
|
for dep in a_data['runtaskhashes']:
|
|
output.append("Hash for dependent task %s is %s" % (dep, a_data['runtaskhashes'][dep]))
|
|
|
|
if 'taint' in a_data:
|
|
output.append("Tainted (by forced/invalidated task): %s" % a_data['taint'])
|
|
|
|
if 'task' in a_data:
|
|
computed_basehash = calc_basehash(a_data)
|
|
output.append("Computed base hash is %s and from file %s" % (computed_basehash, a_data['basehash']))
|
|
else:
|
|
output.append("Unable to compute base hash")
|
|
|
|
computed_taskhash = calc_taskhash(a_data)
|
|
output.append("Computed task hash is %s" % computed_taskhash)
|
|
|
|
return output
|