#
# SPDX-License-Identifier: GPL-2.0-only
#
import hashlib
import logging
import os
import re
import tempfile
import pickle
import bb.data
import difflib
import simplediff
from bb.checksum import FileChecksumCache
logger = logging.getLogger('BitBake.SigGen')
def init(d):
siggens = [obj for obj in globals().values()
if type(obj) is type and issubclass(obj, SignatureGenerator)]
desired = d.getVar("BB_SIGNATURE_HANDLER") or "noop"
for sg in siggens:
if desired == sg.name:
return sg(d)
break
else:
logger.error("Invalid signature generator '%s', using default 'noop'\n"
"Available generators: %s", desired,
', '.join(obj.name for obj in siggens))
return SignatureGenerator(d)
class SignatureGenerator(object):
"""
"""
name = "noop"
def __init__(self, data):
self.basehash = {}
self.taskhash = {}
self.runtaskdeps = {}
self.file_checksum_values = {}
self.taints = {}
def finalise(self, fn, d, varient):
return
def get_unihash(self, task):
return self.taskhash[task]
def get_taskhash(self, fn, task, deps, dataCache):
return "0"
def writeout_file_checksum_cache(self):
"""Write/update the file checksum cache onto disk"""
return
def stampfile(self, stampbase, file_name, taskname, extrainfo):
return ("%s.%s.%s" % (stampbase, taskname, extrainfo)).rstrip('.')
def stampcleanmask(self, stampbase, file_name, taskname, extrainfo):
return ("%s.%s.%s" % (stampbase, taskname, extrainfo)).rstrip('.')
def dump_sigtask(self, fn, task, stampbase, runtime):
return
def invalidate_task(self, task, d, fn):
bb.build.del_stamp(task, d, fn)
def dump_sigs(self, dataCache, options):
return
def get_taskdata(self):
return (self.runtaskdeps, self.taskhash, self.file_checksum_values, self.taints, self.basehash)
def set_taskdata(self, data):
self.runtaskdeps, self.taskhash, self.file_checksum_values, self.taints, self.basehash = data
def reset(self, data):
self.__init__(data)
class SignatureGeneratorBasic(SignatureGenerator):
"""
"""
name = "basic"
def __init__(self, data):
self.basehash = {}
self.taskhash = {}
self.taskdeps = {}
self.runtaskdeps = {}
self.file_checksum_values = {}
self.taints = {}
self.gendeps = {}
self.lookupcache = {}
self.pkgnameextract = re.compile(r"(?P<fn>.*)\..*")
self.basewhitelist = set((data.getVar("BB_HASHBASE_WHITELIST") or "").split())
self.taskwhitelist = None
self.init_rundepcheck(data)
checksum_cache_file = data.getVar("BB_HASH_CHECKSUM_CACHE_FILE")
if checksum_cache_file:
self.checksum_cache = FileChecksumCache()
self.checksum_cache.init_cache(data, checksum_cache_file)
else:
self.checksum_cache = None
def init_rundepcheck(self, data):
self.taskwhitelist = data.getVar("BB_HASHTASK_WHITELIST") or None
if self.taskwhitelist:
self.twl = re.compile(self.taskwhitelist)
else:
self.twl = None
def _build_data(self, fn, d):
ignore_mismatch = ((d.getVar("BB_HASH_IGNORE_MISMATCH") or '') == '1')
tasklist, gendeps, lookupcache = bb.data.generate_dependencies(d)
taskdeps, basehash = bb.data.generate_dependency_hash(tasklist, gendeps, lookupcache, self.basewhitelist, fn)
for task in tasklist:
k = fn + "." + task
if not ignore_mismatch and k in self.basehash and self.basehash[k] != basehash[k]:
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], basehash[k]))
bb.error("The following commands may help:")
cmd = "$ bitbake %s -c%s" % (d.getVar('PN'), task)
# Make sure sigdata is dumped before run printdiff
bb.error("%s -Snone" % cmd)
bb.error("Then:")
bb.error("%s -Sprintdiff\n" % cmd)
self.basehash[k] = basehash[k]
self.taskdeps[fn] = taskdeps
self.gendeps[fn] = gendeps
self.lookupcache[fn] = lookupcache
return taskdeps
def finalise(self, fn, d, variant):
mc = d.getVar("__BBMULTICONFIG", False) or ""
if variant or mc:
fn = bb.cache.realfn2virtual(fn, variant, mc)
try:
taskdeps = self._build_data(fn, d)
except bb.parse.SkipRecipe:
raise
except:
bb.warn("Error during finalise of %s" % fn)
raise
#Slow but can be useful for debugging mismatched basehashes
#for task in self.taskdeps[fn]:
# self.dump_sigtask(fn, task, d.getVar("STAMP"), False)
for task in taskdeps:
d.setVar("BB_BASEHASH_task-%s" % task, self.basehash[fn + "." + task])
def rundep_check(self, fn, recipename, task, dep, depname, dataCache):
# Return True if we should keep the dependency, False to drop it
# We only manipulate the dependencies for packages not in the whitelist
if self.twl and not self.twl.search(recipename):
# then process the actual dependencies
if self.twl.search(depname):
return False
return True
def read_taint(self, fn, task, stampbase):
taint = None
try:
with open(stampbase + '.' + task + '.taint', 'r') as taintf:
taint = taintf.read()
except IOError:
pass
return taint
def get_taskhash(self, fn, task, deps, dataCache):
mc = ''
if fn.startswith('multiconfig:'):
mc = fn.split(':')[1]
k = fn + "." + task
data = dataCache.basetaskhash[k]
self.basehash[k] = data
self.runtaskdeps[k] = []
self.file_checksum_values[k] = []
recipename = dataCache.pkg_fn[fn]
for dep in sorted(deps, key=clean_basepath):
pkgname = self.pkgnameextract.search(dep).group('fn')
if mc:
depmc = pkgname.split(':')[1]
if mc != depmc:
continue
if dep.startswith("multiconfig:") and not mc:
continue
depname = dataCache.pkg_fn[pkgname]
if not self.rundep_check(fn, recipename, task, dep, depname, dataCache):
continue
if dep not in self.taskhash:
bb.fatal("%s is not in taskhash, caller isn't calling in dependency order?" % dep)
data = data + self.get_unihash(dep)
self.runtaskdeps[k].append(dep)
if task in dataCache.file_checksums[fn]:
if self.checksum_cache:
checksums = self.checksum_cache.get_checksums(dataCache.file_checksums[fn][task], recipename)
else:
checksums = bb.fetch2.get_file_checksums(dataCache.file_checksums[fn][task], recipename)
for (f,cs) in checksums:
self.file_checksum_values[k].append((f,cs))
if cs:
data = data + cs
taskdep = dataCache.task_deps[fn]
if 'nostamp' in taskdep and task in taskdep['nostamp']:
# Nostamp tasks need an implicit taint so that they force any dependent tasks to run
import uuid
taint = str(uuid.uuid4())
data = data + taint
self.taints[k] = "nostamp:" + taint
taint = self.read_taint(fn, task, dataCache.stamp[fn])
if taint:
data = data + taint
self.taints[k] = taint
logger.warning("%s is tainted from a forced run" % k)
h = hashlib.sha256(data.encode("utf-8")).hexdigest()
self.taskhash[k] = h
#d.setVar("BB_TASKHASH_task-%s" % task, taskhash[task])
return h
def writeout_file_checksum_cache(self):
"""Write/update the file checksum cache onto disk"""
if self.checksum_cache:
self.checksum_cache.save_extras()
self.checksum_cache.save_merge()
else:
bb.fetch2.fetcher_parse_save()
bb.fetch2.fetcher_parse_done()
def dump_sigtask(self, fn, task, stampbase, runtime):
k = fn + "." + task
referencestamp = stampbase
if isinstance(runtime, str) and runtime.startswith("customfile"):
sigfile = stampbase
referencestamp = runtime[11:]
elif runtime and k in self.taskhash:
sigfile = stampbase + "." + task + ".sigdata" + "." + self.taskhash[k]
else:
sigfile = stampbase + "." + task + ".sigbasedata" + "." + self.basehash[k]
bb.utils.mkdirhier(os.path.dirname(sigfile))
data = {}
data['task'] = task
data['basewhitelist'] = self.basewhitelist
data['taskwhitelist'] = self.taskwhitelist
data['taskdeps'] = self.taskdeps[fn][task]
data['basehash'] = self.basehash[k]
data['gendeps'] = {}
data['varvals'] = {}
data['varvals'][task] = self.lookupcache[fn][task]
for dep in self.taskdeps[fn][task]:
if dep in self.basewhitelist:
continue
data['gendeps'][dep] = self.gendeps[fn][dep]
data['varvals'][dep] = self.lookupcache[fn][dep]
if runtime and k in self.taskhash:
data['runtaskdeps'] = self.runtaskdeps[k]
data['file_checksum_values'] = [(os.path.basename(f), cs) for f,cs in self.file_checksum_values[k]]
data['runtaskhashes'] = {}
for dep in data['runtaskdeps']:
data['runtaskhashes'][dep] = self.get_unihash(dep)
data['taskhash'] = self.taskhash[k]
taint = self.read_taint(fn, task, referencestamp)
if taint:
data['taint'] = taint
if runtime and k in self.taints:
if 'nostamp:' in self.taints[k]:
data['taint'] = self.taints[k]
computed_basehash = calc_basehash(data)
if computed_basehash != self.basehash[k]:
bb.error("Basehash mismatch %s versus %s for %s" % (computed_basehash, self.basehash[k], k))
if runtime and k in self.taskhash:
computed_taskhash = calc_taskhash(data)
if computed_taskhash != self.taskhash[k]:
bb.error("Taskhash mismatch %s versus %s for %s" % (computed_taskhash, self.taskhash[k], k))
sigfile = sigfile.replace(self.taskhash[k], computed_taskhash)
fd, tmpfile = tempfile.mkstemp(dir=os.path.dirname(sigfile), prefix="sigtask.")
try:
with os.fdopen(fd, "wb") as stream:
p = pickle.dump(data, stream, -1)
stream.flush()
os.chmod(tmpfile, 0o664)
os.rename(tmpfile, sigfile)
except (OSError, IOError) as err:
try:
os.unlink(tmpfile)
except OSError:
pass
raise err
def dump_sigfn(self, fn, dataCaches, options):
if fn in self.taskdeps:
for task in self.taskdeps[fn]:
tid = fn + ":" + task
(mc, _, _) = bb.runqueue.split_tid(tid)
k = fn + "." + task
if k not in self.taskhash:
continue
if dataCaches[mc].basetaskhash[k] != self.basehash[k]:
bb.error("Bitbake's cached basehash does not match the one we just generated (%s)!" % k)
bb.error("The mismatched hashes were %s and %s" % (dataCaches[mc].basetaskhash[k], self.basehash[k]))
self.dump_sigtask(fn, task, dataCaches[mc].stamp[fn], True)
class SignatureGeneratorBasicHash(SignatureGeneratorBasic):
name = "basichash"
def get_stampfile_hash(self, task):
if task in self.taskhash:
return self.taskhash[task]
# If task is not in basehash, then error
return self.basehash[task]
def stampfile(self, stampbase, fn, taskname, extrainfo, clean=False):
if taskname != "do_setscene" and taskname.endswith("_setscene"):
k = fn + "." + taskname[:-9]
else:
k = fn + "." + taskname
if clean:
h = "*"
else:
h = self.get_stampfile_hash(k)
return ("%s.%s.%s.%s" % (stampbase, taskname, h, extrainfo)).rstrip('.')
def stampcleanmask(self, stampbase, fn, taskname, extrainfo):
return self.stampfile(stampbase, fn, taskname, extrainfo, clean=True)
def invalidate_task(self, task, d, fn):
bb.note("Tainting hash to force rebuild of task %s, %s" % (fn, task))
bb.build.write_taint(task, d, fn)
def dump_this_task(outfile, d):
import bb.parse
fn = d.getVar("BB_FILENAME")
task = "do_" + d.getVar("BB_CURRENTTASK")
referencestamp = bb.build.stamp_internal(task, d, None, True)
bb.parse.siggen.dump_sigtask(fn, task, outfile, "customfile:" + referencestamp)
def init_colors(enable_color):
"""Initialise colour dict for passing to compare_sigfiles()"""
# First set up the colours
colors = {'color_title': '\033[1m',
'color_default': '\033[0m',
'color_add': '\033[0;32m',
'color_remove': '\033[0;31m',
}
# Leave all keys present but clear the values
if not enable_color:
for k in colors.keys():
colors[k] = ''
return colors
def worddiff_str(oldstr, newstr, colors=None):
if not colors:
colors = init_colors(False)
diff = simplediff.diff(oldstr.split(' '), newstr.split(' '))
ret = []
for change, value in diff:
value = ' '.join(value)
if change == '=':
ret.append(value)
elif change == '+':
item = '{color_add}{{+{value}+}}{color_default}'.format(value=value, **colors)
ret.append(item)
elif change == '-':
item = '{color_remove}[-{value}-]{color_default}'.format(value=value, **colors)
ret.append(item)
whitespace_note = ''
if oldstr != newstr and ' '.join(oldstr.split()) == ' '.join(newstr.split()):
whitespace_note = ' (whitespace changed)'
return '"%s"%s' % (' '.join(ret), whitespace_note)
def list_inline_diff(oldlist, newlist, colors=None):
if not colors:
colors = init_colors(False)
diff = simplediff.diff(oldlist, newlist)
ret = []
for change, value in diff:
value = ' '.join(value)
if change == '=':
ret.append("'%s'" % value)
elif change == '+':
item = '{color_add}+{value}{color_default}'.format(value=value, **colors)
ret.append(item)
elif change == '-':
item = '{color_remove}-{value}{color_default}'.format(value=value, **colors)
ret.append(item)
return '[%s]' % (', '.join(ret))
def clean_basepath(a):
mc = None
if a.startswith("multiconfig:"):
_, mc, a = a.split(":", 2)
b = a.rsplit("/", 2)[1] + '/' + a.rsplit("/", 2)[2]
if a.startswith("virtual:"):
b = b + ":" + a.rsplit(":", 1)[0]
if mc:
b = b + ":multiconfig:" + mc
return b
def clean_basepaths(a):
b = {}
for x in a:
b[clean_basepath(x)] = a[x]
return b
def clean_basepaths_list(a):
b = []
for x in a:
b.append(clean_basepath(x))
return b
def compare_sigfiles(a, b, recursecb=None, color=False, collapsed=False):
output = []
colors = init_colors(color)
def color_format(formatstr, **values):
"""
Return colour formatted string.
NOTE: call with the format string, not an already formatted string
containing values (otherwise you could have trouble with { and }
characters)
"""
if not formatstr.endswith('{color_default}'):
formatstr += '{color_default}'
# In newer python 3 versions you can pass both of these directly,
# but we only require 3.4 at the moment
formatparams = {}
formatparams.update(colors)
formatparams.update(values)
return formatstr.format(**formatparams)
with open(a, 'rb') as f:
p1 = pickle.Unpickler(f)
a_data = p1.load()
with open(b, 'rb') as f:
p2 = pickle.Unpickler(f)
b_data = p2.load()
def dict_diff(a, b, whitelist=set()):
sa = set(a.keys())
sb = set(b.keys())
common = sa & sb
changed = set()
for i in common:
if a[i] != b[i] and i not in whitelist:
changed.add(i)
added = sb - sa
removed = sa - sb
return changed, added, removed
def file_checksums_diff(a, b):
from collections import Counter
# 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:
if a_taint.startswith('nostamp:'):
a_taint = a_taint.replace('nostamp:', 'nostamp(uuid4):')
if b_taint.startswith('nostamp:'):
b_taint = b_taint.replace('nostamp:', 'nostamp(uuid4):')
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.sha256(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.sha256(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:
if a_data['taint'].startswith('nostamp:'):
msg = a_data['taint'].replace('nostamp:', 'nostamp(uuid4):')
else:
msg = a_data['taint']
output.append("Tainted (by forced/invalidated task): %s" % msg)
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