# Report significant differences in the buildhistory repository since a specific revision
#
# Copyright (C) 2012-2013, 2016-2017 Intel Corporation
# Author: Paul Eggleton <paul.eggleton@linux.intel.com>
#
# SPDX-License-Identifier: GPL-2.0-only
#
# Note: requires GitPython 0.3.1+
#
# You can use this from the command line by running scripts/buildhistory-diff
#
import sys
import os.path
import difflib
import git
import re
import shlex
import hashlib
import collections
import bb.utils
import bb.tinfoil
# How to display fields
list_fields = ['DEPENDS', 'RPROVIDES', 'RDEPENDS', 'RRECOMMENDS', 'RSUGGESTS', 'RREPLACES', 'RCONFLICTS', 'FILES', 'FILELIST', 'USER_CLASSES', 'IMAGE_CLASSES', 'IMAGE_FEATURES', 'IMAGE_LINGUAS', 'IMAGE_INSTALL', 'BAD_RECOMMENDATIONS', 'PACKAGE_EXCLUDE']
list_order_fields = ['PACKAGES']
defaultval_map = {'PKG': 'PKG', 'PKGE': 'PE', 'PKGV': 'PV', 'PKGR': 'PR'}
numeric_fields = ['PKGSIZE', 'IMAGESIZE']
# Fields to monitor
monitor_fields = ['RPROVIDES', 'RDEPENDS', 'RRECOMMENDS', 'RREPLACES', 'RCONFLICTS', 'PACKAGES', 'FILELIST', 'PKGSIZE', 'IMAGESIZE', 'PKG']
ver_monitor_fields = ['PKGE', 'PKGV', 'PKGR']
# Percentage change to alert for numeric fields
monitor_numeric_threshold = 10
# Image files to monitor (note that image-info.txt is handled separately)
img_monitor_files = ['installed-package-names.txt', 'files-in-image.txt']
colours = {
'colour_default': '',
'colour_add': '',
'colour_remove': '',
}
def init_colours(use_colours):
global colours
if use_colours:
colours = {
'colour_default': '\033[0m',
'colour_add': '\033[1;32m',
'colour_remove': '\033[1;31m',
}
else:
colours = {
'colour_default': '',
'colour_add': '',
'colour_remove': '',
}
class ChangeRecord:
def __init__(self, path, fieldname, oldvalue, newvalue, monitored):
self.path = path
self.fieldname = fieldname
self.oldvalue = oldvalue
self.newvalue = newvalue
self.monitored = monitored
self.filechanges = None
def __str__(self):
return self._str_internal(True)
def _str_internal(self, outer):
if outer:
if '/image-files/' in self.path:
prefix = '%s: ' % self.path.split('/image-files/')[0]
else:
prefix = '%s: ' % self.path
else:
prefix = ''
def pkglist_combine(depver):
pkglist = []
for k,v in depver.items():
if v:
pkglist.append("%s (%s)" % (k,v))
else:
pkglist.append(k)
return pkglist
def detect_renamed_dirs(aitems, bitems):
adirs = set(map(os.path.dirname, aitems))
bdirs = set(map(os.path.dirname, bitems))
files_ab = [(name, sorted(os.path.basename(item) for item in aitems if os.path.dirname(item) == name)) \
for name in adirs - bdirs]
files_ba = [(name, sorted(os.path.basename(item) for item in bitems if os.path.dirname(item) == name)) \
for name in bdirs - adirs]
renamed_dirs = []
for dir1, files1 in files_ab:
rename = False
for dir2, files2 in files_ba:
if files1 == files2 and not rename:
renamed_dirs.append((dir1,dir2))
# Make sure that we don't use this (dir, files) pair again.
files_ba.remove((dir2,files2))
# If a dir has already been found to have a rename, stop and go no further.
rename = True
# remove files that belong to renamed dirs from aitems and bitems
for dir1, dir2 in renamed_dirs:
aitems = [item for item in aitems if os.path.dirname(item) not in (dir1, dir2)]
bitems = [item for item in bitems if os.path.dirname(item) not in (dir1, dir2)]
return renamed_dirs, aitems, bitems
if self.fieldname in list_fields or self.fieldname in list_order_fields:
renamed_dirs = []
changed_order = False
if self.fieldname in ['RPROVIDES', 'RDEPENDS', 'RRECOMMENDS', 'RSUGGESTS', 'RREPLACES', 'RCONFLICTS']:
(depvera, depverb) = compare_pkg_lists(self.oldvalue, self.newvalue)
aitems = pkglist_combine(depvera)
bitems = pkglist_combine(depverb)
else:
if self.fieldname == 'FILELIST':
aitems = shlex.split(self.oldvalue)
bitems = shlex.split(self.newvalue)
renamed_dirs, aitems, bitems = detect_renamed_dirs(aitems, bitems)
else:
aitems = self.oldvalue.split()
bitems = self.newvalue.split()
removed = list(set(aitems) - set(bitems))
added = list(set(bitems) - set(aitems))
if not removed and not added and self.fieldname in ['RPROVIDES', 'RDEPENDS', 'RRECOMMENDS', 'RSUGGESTS', 'RREPLACES', 'RCONFLICTS']:
depvera = bb.utils.explode_dep_versions2(self.oldvalue, sort=False)
depverb = bb.utils.explode_dep_versions2(self.newvalue, sort=False)
for i, j in zip(depvera.items(), depverb.items()):
if i[0] != j[0]:
changed_order = True
break
lines = []
if renamed_dirs:
for dfrom, dto in renamed_dirs:
lines.append('directory renamed {colour_remove}{}{colour_default} -> {colour_add}{}{colour_default}'.format(dfrom, dto, **colours))
if removed or added:
if removed and not bitems:
lines.append('removed all items "{colour_remove}{}{colour_default}"'.format(' '.join(removed), **colours))
else:
if removed:
lines.append('removed "{colour_remove}{value}{colour_default}"'.format(value=' '.join(removed), **colours))
if added:
lines.append('added "{colour_add}{value}{colour_default}"'.format(value=' '.join(added), **colours))
else:
lines.append('changed order')
if not (removed or added or changed_order):
out = ''
else:
out = '%s: %s' % (self.fieldname, ', '.join(lines))
elif self.fieldname in numeric_fields:
aval = int(self.oldvalue or 0)
bval = int(self.newvalue or 0)
if aval != 0:
percentchg = ((bval - aval) / float(aval)) * 100
else:
percentchg = 100
out = '{} changed from {colour_remove}{}{colour_default} to {colour_add}{}{colour_default} ({}{:.0f}%)'.format(self.fieldname, self.oldvalue or "''", self.newvalue or "''", '+' if percentchg > 0 else '', percentchg, **colours)
elif self.fieldname in defaultval_map:
out = '{} changed from {colour_remove}{}{colour_default} to {colour_add}{}{colour_default}'.format(self.fieldname, self.oldvalue, self.newvalue, **colours)
if self.fieldname == 'PKG' and '[default]' in self.newvalue:
out += ' - may indicate debian renaming failure'
elif self.fieldname in ['pkg_preinst', 'pkg_postinst', 'pkg_prerm', 'pkg_postrm']:
if self.oldvalue and self.newvalue:
out = '%s changed:\n ' % self.fieldname
elif self.newvalue:
out = '%s added:\n ' % self.fieldname
elif self.oldvalue:
out = '%s cleared:\n ' % self.fieldname
alines = self.oldvalue.splitlines()
blines = self.newvalue.splitlines()
diff = difflib.unified_diff(alines, blines, self.fieldname, self.fieldname, lineterm='')
out += '\n '.join(list(diff)[2:])
out += '\n --'
elif self.fieldname in img_monitor_files or '/image-files/' in self.path or self.fieldname == "sysroot":
if self.filechanges or (self.oldvalue and self.newvalue):
fieldname = self.fieldname
if '/image-files/' in self.path:
fieldname = os.path.join('/' + self.path.split('/image-files/')[1], self.fieldname)
out = 'Changes to %s:\n ' % fieldname
else:
if outer:
prefix = 'Changes to %s ' % self.path
out = '(%s):\n ' % self.fieldname
if self.filechanges:
out += '\n '.join(['%s' % i for i in self.filechanges])
else:
alines = self.oldvalue.splitlines()
blines = self.newvalue.splitlines()
diff = difflib.unified_diff(alines, blines, fieldname, fieldname, lineterm='')
out += '\n '.join(list(diff))
out += '\n --'
else:
out = ''
else:
out = '{} changed from "{colour_remove}{}{colour_default}" to "{colour_add}{}{colour_default}"'.format(self.fieldname, self.oldvalue, self.newvalue, **colours)
return '%s%s' % (prefix, out) if out else ''
class FileChange:
changetype_add = 'A'
changetype_remove = 'R'
changetype_type = 'T'
changetype_perms = 'P'
changetype_ownergroup = 'O'
changetype_link = 'L'
def __init__(self, path, changetype, oldvalue = None, newvalue = None):
self.path = path
self.changetype = changetype
self.oldvalue = oldvalue
self.newvalue = newvalue
def _ftype_str(self, ftype):
if ftype == '-':
return 'file'
elif ftype == 'd':
return 'directory'
elif ftype == 'l':
return 'symlink'
elif ftype == 'c':
return 'char device'
elif ftype == 'b':
return 'block device'
elif ftype == 'p':
return 'fifo'
elif ftype == 's':
return 'socket'
else:
return 'unknown (%s)' % ftype
def __str__(self):
if self.changetype == self.changetype_add:
return '%s was added' % self.path
elif self.changetype == self.changetype_remove:
return '%s was removed' % self.path
elif self.changetype == self.changetype_type:
return '%s changed type from %s to %s' % (self.path, self._ftype_str(self.oldvalue), self._ftype_str(self.newvalue))
elif self.changetype == self.changetype_perms:
return '%s changed permissions from %s to %s' % (self.path, self.oldvalue, self.newvalue)
elif self.changetype == self.changetype_ownergroup:
return '%s changed owner/group from %s to %s' % (self.path, self.oldvalue, self.newvalue)
elif self.changetype == self.changetype_link:
return '%s changed symlink target from %s to %s' % (self.path, self.oldvalue, self.newvalue)
else:
return '%s changed (unknown)' % self.path
def blob_to_dict(blob):
alines = [line for line in blob.data_stream.read().decode('utf-8').splitlines()]
adict = {}
for line in alines:
splitv = [i.strip() for i in line.split('=',1)]
if len(splitv) > 1:
adict[splitv[0]] = splitv[1]
return adict
def file_list_to_dict(lines):
adict = {}
for line in lines:
# Leave the last few fields intact so we handle file names containing spaces
splitv = line.split(None,4)
# Grab the path and remove the leading .
path = splitv[4][1:].strip()
# Handle symlinks
if(' -> ' in path):
target = path.split(' -> ')[1]
path = path.split(' -> ')[0]
adict[path] = splitv[0:3] + [target]
else:
adict[path] = splitv[0:3]
return adict
def compare_file_lists(alines, blines, compare_ownership=True):
adict = file_list_to_dict(alines)
bdict = file_list_to_dict(blines)
filechanges = []
for path, splitv in adict.items():
newsplitv = bdict.pop(path, None)
if newsplitv:
# Check type
oldvalue = splitv[0][0]
newvalue = newsplitv[0][0]
if oldvalue != newvalue:
filechanges.append(FileChange(path, FileChange.changetype_type, oldvalue, newvalue))
# Check permissions
oldvalue = splitv[0][1:]
newvalue = newsplitv[0][1:]
if oldvalue != newvalue:
filechanges.append(FileChange(path, FileChange.changetype_perms, oldvalue, newvalue))
if compare_ownership:
# Check owner/group
oldvalue = '%s/%s' % (splitv[1], splitv[2])
newvalue = '%s/%s' % (newsplitv[1], newsplitv[2])
if oldvalue != newvalue:
filechanges.append(FileChange(path, FileChange.changetype_ownergroup, oldvalue, newvalue))
# Check symlink target
if newsplitv[0][0] == 'l':
if len(splitv) > 3:
oldvalue = splitv[3]
else:
oldvalue = None
newvalue = newsplitv[3]
if oldvalue != newvalue:
filechanges.append(FileChange(path, FileChange.changetype_link, oldvalue, newvalue))
else:
filechanges.append(FileChange(path, FileChange.changetype_remove))
# Whatever is left over has been added
for path in bdict:
filechanges.append(FileChange(path, FileChange.changetype_add))
return filechanges
def compare_lists(alines, blines):
removed = list(set(alines) - set(blines))
added = list(set(blines) - set(alines))
filechanges = []
for pkg in removed:
filechanges.append(FileChange(pkg, FileChange.changetype_remove))
for pkg in added:
filechanges.append(FileChange(pkg, FileChange.changetype_add))
return filechanges
def compare_pkg_lists(astr, bstr):
depvera = bb.utils.explode_dep_versions2(astr)
depverb = bb.utils.explode_dep_versions2(bstr)
# Strip out changes where the version has increased
remove = []
for k in depvera:
if k in depverb:
dva = depvera[k]
dvb = depverb[k]
if dva and dvb and len(dva) == len(dvb):
# Since length is the same, sort so that prefixes (e.g. >=) will line up
dva.sort()
dvb.sort()
removeit = True
for dvai, dvbi in zip(dva, dvb):
if dvai != dvbi:
aiprefix = dvai.split(' ')[0]
biprefix = dvbi.split(' ')[0]
if aiprefix == biprefix and aiprefix in ['>=', '=']:
if bb.utils.vercmp(bb.utils.split_version(dvai), bb.utils.split_version(dvbi)) > 0:
removeit = False
break
else:
removeit = False
break
if removeit:
remove.append(k)
for k in remove:
depvera.pop(k)
depverb.pop(k)
return (depvera, depverb)
def compare_dict_blobs(path, ablob, bblob, report_all, report_ver):
adict = blob_to_dict(ablob)
bdict = blob_to_dict(bblob)
pkgname = os.path.basename(path)
defaultvals = {}
defaultvals['PKG'] = pkgname
defaultvals['PKGE'] = '0'
changes = []
keys = list(set(adict.keys()) | set(bdict.keys()) | set(defaultval_map.keys()))
for key in keys:
astr = adict.get(key, '')
bstr = bdict.get(key, '')
if key in ver_monitor_fields:
monitored = report_ver or astr or bstr
else:
monitored = key in monitor_fields
mapped_key = defaultval_map.get(key, '')
if mapped_key:
if not astr:
astr = '%s [default]' % adict.get(mapped_key, defaultvals.get(key, ''))
if not bstr:
bstr = '%s [default]' % bdict.get(mapped_key, defaultvals.get(key, ''))
if astr != bstr:
if (not report_all) and key in numeric_fields:
aval = int(astr or 0)
bval = int(bstr or 0)
if aval != 0:
percentchg = ((bval - aval) / float(aval)) * 100
else:
percentchg = 100
if abs(percentchg) < monitor_numeric_threshold:
continue
elif (not report_all) and key in list_fields:
if key == "FILELIST" and (path.endswith("-dbg") or path.endswith("-src")) and bstr.strip() != '':
continue
if key in ['RPROVIDES', 'RDEPENDS', 'RRECOMMENDS', 'RSUGGESTS', 'RREPLACES', 'RCONFLICTS']:
(depvera, depverb) = compare_pkg_lists(astr, bstr)
if depvera == depverb:
continue
if key == 'FILELIST':
alist = shlex.split(astr)
blist = shlex.split(bstr)
else:
alist = astr.split()
blist = bstr.split()
alist.sort()
blist.sort()
# We don't care about the removal of self-dependencies
if pkgname in alist and not pkgname in blist:
alist.remove(pkgname)
if ' '.join(alist) == ' '.join(blist):
continue
if key == 'PKGR' and not report_all:
vers = []
# strip leading 'r' and dots
for ver in (astr.split()[0], bstr.split()[0]):
if ver.startswith('r'):
ver = ver[1:]
vers.append(ver.replace('.', ''))
maxlen = max(len(vers[0]), len(vers[1]))
try:
# pad with '0' and convert to int
vers = [int(ver.ljust(maxlen, '0')) for ver in vers]
except ValueError:
pass
else:
# skip decrements and increments
if abs(vers[0] - vers[1]) == 1:
continue
chg = ChangeRecord(path, key, astr, bstr, monitored)
changes.append(chg)
return changes
def compare_siglists(a_blob, b_blob, taskdiff=False):
# FIXME collapse down a recipe's tasks?
alines = a_blob.data_stream.read().decode('utf-8').splitlines()
blines = b_blob.data_stream.read().decode('utf-8').splitlines()
keys = []
pnmap = {}
def readsigs(lines):
sigs = {}
for line in lines:
linesplit = line.split()
if len(linesplit) > 2:
sigs[linesplit[0]] = linesplit[2]
if not linesplit[0] in keys:
keys.append(linesplit[0])
pnmap[linesplit[1]] = linesplit[0].rsplit('.', 1)[0]
return sigs
adict = readsigs(alines)
bdict = readsigs(blines)
out = []
changecount = 0
addcount = 0
removecount = 0
if taskdiff:
with bb.tinfoil.Tinfoil() as tinfoil:
tinfoil.prepare(config_only=True)
changes = collections.OrderedDict()
def compare_hashfiles(pn, taskname, hash1, hash2):
hashes = [hash1, hash2]
hashfiles = bb.siggen.find_siginfo(pn, taskname, hashes, tinfoil.config_data)
if not taskname:
(pn, taskname) = pn.rsplit('.', 1)
pn = pnmap.get(pn, pn)
desc = '%s.%s' % (pn, taskname)
if len(hashfiles) == 0:
out.append("Unable to find matching sigdata for %s with hashes %s or %s" % (desc, hash1, hash2))
elif not hash1 in hashfiles:
out.append("Unable to find matching sigdata for %s with hash %s" % (desc, hash1))
elif not hash2 in hashfiles:
out.append("Unable to find matching sigdata for %s with hash %s" % (desc, hash2))
else:
out2 = bb.siggen.compare_sigfiles(hashfiles[hash1], hashfiles[hash2], recursecb, collapsed=True)
for line in out2:
m = hashlib.sha256()
m.update(line.encode('utf-8'))
entry = changes.get(m.hexdigest(), (line, []))
if desc not in entry[1]:
changes[m.hexdigest()] = (line, entry[1] + [desc])
# Define recursion callback
def recursecb(key, hash1, hash2):
compare_hashfiles(key, None, hash1, hash2)
return []
for key in keys:
siga = adict.get(key, None)
sigb = bdict.get(key, None)
if siga is not None and sigb is not None and siga != sigb:
changecount += 1
(pn, taskname) = key.rsplit('.', 1)
compare_hashfiles(pn, taskname, siga, sigb)
elif siga is None:
addcount += 1
elif sigb is None:
removecount += 1
for key, item in changes.items():
line, tasks = item
if len(tasks) == 1:
desc = tasks[0]
elif len(tasks) == 2:
desc = '%s and %s' % (tasks[0], tasks[1])
else:
desc = '%s and %d others' % (tasks[-1], len(tasks)-1)
out.append('%s: %s' % (desc, line))
else:
for key in keys:
siga = adict.get(key, None)
sigb = bdict.get(key, None)
if siga is not None and sigb is not None and siga != sigb:
out.append('%s changed from %s to %s' % (key, siga, sigb))
changecount += 1
elif siga is None:
out.append('%s was added' % key)
addcount += 1
elif sigb is None:
out.append('%s was removed' % key)
removecount += 1
out.append('Summary: %d tasks added, %d tasks removed, %d tasks modified (%.1f%%)' % (addcount, removecount, changecount, (changecount / float(len(bdict)) * 100)))
return '\n'.join(out)
def process_changes(repopath, revision1, revision2='HEAD', report_all=False, report_ver=False,
sigs=False, sigsdiff=False, exclude_path=None):
repo = git.Repo(repopath)
assert repo.bare == False
commit = repo.commit(revision1)
diff = commit.diff(revision2)
changes = []
if sigs or sigsdiff:
for d in diff.iter_change_type('M'):
if d.a_blob.path == 'siglist.txt':
changes.append(compare_siglists(d.a_blob, d.b_blob, taskdiff=sigsdiff))
return changes
for d in diff.iter_change_type('M'):
path = os.path.dirname(d.a_blob.path)
if path.startswith('packages/'):
filename = os.path.basename(d.a_blob.path)
if filename == 'latest':
changes.extend(compare_dict_blobs(path, d.a_blob, d.b_blob, report_all, report_ver))
elif filename.startswith('latest.'):
chg = ChangeRecord(path, filename, d.a_blob.data_stream.read().decode('utf-8'), d.b_blob.data_stream.read().decode('utf-8'), True)
changes.append(chg)
elif filename == 'sysroot':
alines = d.a_blob.data_stream.read().decode('utf-8').splitlines()
blines = d.b_blob.data_stream.read().decode('utf-8').splitlines()
filechanges = compare_file_lists(alines,blines, compare_ownership=False)
if filechanges:
chg = ChangeRecord(path, filename, None, None, True)
chg.filechanges = filechanges
changes.append(chg)
elif path.startswith('images/'):
filename = os.path.basename(d.a_blob.path)
if filename in img_monitor_files:
if filename == 'files-in-image.txt':
alines = d.a_blob.data_stream.read().decode('utf-8').splitlines()
blines = d.b_blob.data_stream.read().decode('utf-8').splitlines()
filechanges = compare_file_lists(alines,blines)
if filechanges:
chg = ChangeRecord(path, filename, None, None, True)
chg.filechanges = filechanges
changes.append(chg)
elif filename == 'installed-package-names.txt':
alines = d.a_blob.data_stream.read().decode('utf-8').splitlines()
blines = d.b_blob.data_stream.read().decode('utf-8').splitlines()
filechanges = compare_lists(alines,blines)
if filechanges:
chg = ChangeRecord(path, filename, None, None, True)
chg.filechanges = filechanges
changes.append(chg)
else:
chg = ChangeRecord(path, filename, d.a_blob.data_stream.read().decode('utf-8'), d.b_blob.data_stream.read().decode('utf-8'), True)
changes.append(chg)
elif filename == 'image-info.txt':
changes.extend(compare_dict_blobs(path, d.a_blob, d.b_blob, report_all, report_ver))
elif '/image-files/' in path:
chg = ChangeRecord(path, filename, d.a_blob.data_stream.read().decode('utf-8'), d.b_blob.data_stream.read().decode('utf-8'), True)
changes.append(chg)
# Look for added preinst/postinst/prerm/postrm
# (without reporting newly added recipes)
addedpkgs = []
addedchanges = []
for d in diff.iter_change_type('A'):
path = os.path.dirname(d.b_blob.path)
if path.startswith('packages/'):
filename = os.path.basename(d.b_blob.path)
if filename == 'latest':
addedpkgs.append(path)
elif filename.startswith('latest.'):
chg = ChangeRecord(path, filename[7:], '', d.b_blob.data_stream.read().decode('utf-8'), True)
addedchanges.append(chg)
for chg in addedchanges:
found = False
for pkg in addedpkgs:
if chg.path.startswith(pkg):
found = True
break
if not found:
changes.append(chg)
# Look for cleared preinst/postinst/prerm/postrm
for d in diff.iter_change_type('D'):
path = os.path.dirname(d.a_blob.path)
if path.startswith('packages/'):
filename = os.path.basename(d.a_blob.path)
if filename != 'latest' and filename.startswith('latest.'):
chg = ChangeRecord(path, filename[7:], d.a_blob.data_stream.read().decode('utf-8'), '', True)
changes.append(chg)
# filter out unwanted paths
if exclude_path:
for chg in changes:
if chg.filechanges:
fchgs = []
for fchg in chg.filechanges:
for epath in exclude_path:
if fchg.path.startswith(epath):
break
else:
fchgs.append(fchg)
chg.filechanges = fchgs
if report_all:
return changes
else:
return [chg for chg in changes if chg.monitored]