def __init__(self, cfg, url, logPrefix, extraPrefs="", quiet=False, leaveProfile=False):
"""Run Firefox once, detect bugs, and determine a 'level' based on the most severe unknown bug."""
profileDir = mkdtemp(prefix="domfuzz-rdf-profile")
createDOMFuzzProfile(profileDir)
writePrefs(profileDir, extraPrefs)
runBrowserArgs = [cfg.dirs.reftestScriptDir, cfg.dirs.utilityDir, profileDir]
assert logPrefix # :(
leakLogFile = logPrefix + "-leaks.txt"
runbrowserpy = [sys.executable, "-u", os.path.join(THIS_SCRIPT_DIRECTORY, "runbrowser.py")]
runbrowser = subprocess.Popen(
runbrowserpy + ["--leak-log-file=" + leakLogFile] + cfg.runBrowserOptions + runBrowserArgs + [url],
stdin=None,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, # Hmm, CrashInfo.fromRawCrashData expects them separate, but I like them together...
env=cfg.env,
close_fds=close_fds
)
alh = AmissLogHandler(cfg.knownPath, cfg.options.valgrind)
# Bug 718208
if extraPrefs.find("inflation") != -1:
alh.expectedToRenderInconsistently = True
statusLinePrefix = "RUNBROWSER INFO | runbrowser.py | runApp: exited with status "
status = -9000
# NB: not using 'for line in runbrowser.stdout' because that uses a hidden buffer
# see http://docs.python.org/library/stdtypes.html#file.next
while True:
line = runbrowser.stdout.readline()
if line != '':
line = alh.processLine(line)
if not quiet:
print line,
if line.startswith(statusLinePrefix):
status = int(line[len(statusLinePrefix):])
else:
break
lev = DOM_FINE
if alh.mallocFailure:
lev = max(lev, DOM_NEW_ASSERT_OR_CRASH)
if alh.fuzzerComplained or alh.sawChromeFailure:
lev = max(lev, DOM_FUZZER_COMPLAINED)
if alh.sawValgrindComplaint:
lev = max(lev, DOM_VG_AMISS)
if alh.sawNewNonfatalAssertion:
lev = max(lev, DOM_NEW_ASSERT_OR_CRASH)
# Leak stuff
if 'user_pref("layers.use-deprecated-textures", true);' in extraPrefs:
# Bug 933569
# Doing the change *here* only works because this is a small leak that shouldn't affect the reads in alh
alh.expectedToLeak = True
if 'user_pref("gfx.downloadable_fonts.disable_cache", true);' in extraPrefs:
# Bug 1258031
# This is a large leak. I don't remember what the comment above is about.
alh.expectedToLeak = True
if os.path.exists(leakLogFile) and status == 0 and detect_leaks.amiss(cfg.knownPath, leakLogFile, verbose=not quiet) and not alh.expectedToLeak:
alh.printAndLog(DOMI_MARKER + "Leak (trace-refcnt)")
alh.printAndLog("Leak details: " + os.path.basename(leakLogFile))
lev = max(lev, DOM_UNEXPECTED_LEAK)
else:
if alh.sawOMGLEAK and not alh.expectedToLeak:
lev = max(lev, DOM_UNEXPECTED_LEAK)
if leakLogFile:
# Remove the main leak log file, plus any plugin-process leak log files
for f in glob.glob(leakLogFile + "*"):
os.remove(f)
# Do various stuff based on how the process exited
if alh.timedOut:
if alh.expectedToHang or cfg.options.valgrind:
alh.printAndLog("%%% An expected hang")
else:
alh.printAndLog(DOMI_MARKER + "Unexpected hang")
lev = max(lev, DOM_UNEXPECTED_HANG)
elif status < 0 and os.name == 'posix':
signum = -status
signame = getSignalName(signum, "unknown signal")
print "DOMFUZZ INFO | domInteresting.py | Terminated by signal " + str(signum) + " (" + signame + ")"
elif status == 1:
alh.printAndLog("%%% Exited with status 1 (crash?)")
elif status == -2147483645 and sps.isWin:
alh.printAndLog("%%% Exited with status -2147483645 (plugin issue, bug 867263?)")
elif status != 0:
alh.printAndLog(DOMI_MARKER + "Abnormal exit (status %d)" % status)
lev = max(lev, DOM_ABNORMAL_EXIT)
# Always look for crash information in stderr.
linesWithoutLineBreaks = [s.rstrip() for s in alh.fullLog]
linesWithoutLineBreaks = fileManipulation.truncateMid(linesWithoutLineBreaks, 5000, ["..."])
crashInfo = CrashInfo.CrashInfo.fromRawCrashData([], linesWithoutLineBreaks, cfg.pc)
# If the program crashed but we didn't find crash info in stderr (breakpad/asan),
# poll for a core file (to feed to gdb) or log from the Mac crash reporter.
if isinstance(crashInfo, CrashInfo.NoCrashInfo) and status < 0 and os.name == 'posix':
signum = -status
if signum != signal.SIGKILL and signum != signal.SIGTERM:
wantStack = True
assert alh.theapp
crashLog = sps.grabCrashLog(alh.theapp, alh.pid, logPrefix, wantStack)
if crashLog:
with open(crashLog) as f:
auxCrashData = f.readlines()
crashInfo = CrashInfo.CrashInfo.fromRawCrashData([], linesWithoutLineBreaks, cfg.pc, auxCrashData=auxCrashData)
else:
alh.printAndLog(DOMI_MARKER + "The browser crashed, but did not leave behind any crash information!")
lev = max(lev, DOM_NEW_ASSERT_OR_CRASH)
createCollector.printCrashInfo(crashInfo)
if not isinstance(crashInfo, CrashInfo.NoCrashInfo):
lev = max(lev, DOM_NEW_ASSERT_OR_CRASH)
match = cfg.collector.search(crashInfo)
if match[0] is not None:
createCollector.printMatchingSignature(match)
lev = DOM_FINE
if lev > DOM_FINE:
with open(logPrefix + "-output.txt", "w") as outlog:
outlog.writelines(alh.fullLog)
subprocess.call(["gzip", logPrefix + "-output.txt"])
with open(logPrefix + "-summary.txt", "w") as summaryLogFile:
summaryLogFile.writelines(alh.summaryLog)
if lev == DOM_FINE:
removeIfExists(logPrefix + "-core.gz")
removeIfExists(logPrefix + "-crash.txt")
if not leaveProfile:
shutil.rmtree(profileDir)
print "DOMFUZZ INFO | domInteresting.py | " + str(lev)
self.level = lev
self.lines = alh.fullLog
self.crashInfo = crashInfo
def levelAndLines(url, logPrefix=None, extraPrefs="", quiet=False, leaveProfile=False):
"""Run Firefox using the profile created above, detecting bugs and stuff."""
profileDir = mkdtemp(prefix="domfuzz-rdf-profile")
createDOMFuzzProfile(profileDir)
writePrefs(profileDir, extraPrefs)
runBrowserArgs = [dirs.reftestScriptDir, dirs.utilityDir, profileDir]
assert logPrefix # :(
leakLogFile = logPrefix + "-leaks.txt"
runbrowser = subprocess.Popen(
runbrowserpy + ["--leak-log-file=" + leakLogFile] + runBrowserOptions + runBrowserArgs + [url],
stdin=None,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
env=env,
close_fds=close_fds
)
alh = AmissLogHandler(knownPath)
alh.valgrind = options.valgrind
# Bug 718208
if extraPrefs.find("inflation") != -1:
alh.expectedToRenderInconsistently = True
statusLinePrefix = "RUNBROWSER INFO | runbrowser.py | runApp: exited with status "
status = -9000
# NB: not using 'for line in runbrowser.stdout' because that uses a hidden buffer
# see http://docs.python.org/library/stdtypes.html#file.next
while True:
line = runbrowser.stdout.readline()
if line != '':
line = alh.processLine(line)
if not quiet:
print line,
if line.startswith(statusLinePrefix):
status = int(line[len(statusLinePrefix):])
else:
break
lev = DOM_FINE
if status < 0 and os.name == 'posix':
# The program was terminated by a signal, which usually indicates a crash.
signum = -status
if signum != signal.SIGKILL and signum != signal.SIGTERM and not alh.crashWatcher.crashProcessor:
# We did not detect a breakpad/ASan crash in the output, but it looks like the process crashed.
# Look for a core file (to feed to gdb) or log from the Mac crash reporter.
wantStack = True
assert alh.theapp
crashLog = sps.grabCrashLog(alh.theapp, alh.pid, logPrefix, wantStack)
if crashLog:
alh.crashWatcher.readCrashLog(crashLog)
else:
alh.printAndLog("@@@ The browser crashed, but did not leave behind any crash information!")
lev = max(lev, DOM_NEW_ASSERT_OR_CRASH)
if alh.newAssertionFailure:
lev = max(lev, DOM_NEW_ASSERT_OR_CRASH)
if alh.mallocFailure:
lev = max(lev, DOM_MALLOC_ERROR)
if alh.fuzzerComplained or alh.sawChromeFailure:
lev = max(lev, DOM_FUZZER_COMPLAINED)
if alh.sawValgrindComplaint:
lev = max(lev, DOM_VG_AMISS)
if alh.timedOut:
if alh.expectedToHang or options.valgrind:
alh.printAndLog("%%% An expected hang")
else:
alh.printAndLog("@@@ Unexpected hang")
lev = max(lev, DOM_TIMED_OUT_UNEXPECTEDLY)
elif alh.crashWatcher.crashProcessor:
if alh.crashWatcher.crashIsKnown:
alh.printAndLog("%%% Known crash (from " + alh.crashWatcher.crashProcessor + ")" + alh.crashWatcher.crashSignature)
else:
alh.printAndLog("@@@ New crash (from " + alh.crashWatcher.crashProcessor + ")" + alh.crashWatcher.crashSignature)
lev = max(lev, DOM_NEW_ASSERT_OR_CRASH)
elif options.valgrind and status == VALGRIND_ERROR_EXIT_CODE:
# Disabled due to leaks in the glxtest process that Firefox forks on Linux.
# (Second part of the workaround for bug 658840.)
# (We detect Valgrind warnings as they happen, instead.)
#alh.printAndLog("@@@ Valgrind complained via exit code")
#lev = max(lev, DOM_VG_AMISS)
pass
elif status < 0 and os.name == 'posix':
signame = getSignalName(signum, "unknown signal")
print "DOMFUZZ INFO | domInteresting.py | Terminated by signal " + str(signum) + " (" + signame + ")"
elif status == 1:
alh.printAndLog("%%% Exited with status 1 (OOM or plugin crash?)")
elif status == -2147483645 and sps.isWin:
alh.printAndLog("%%% Exited with status -2147483645 (plugin issue, bug 867263?)")
elif status != 0 and not (sps.isWin and alh.sawFatalAssertion):
alh.printAndLog("@@@ Abnormal exit (status %d)" % status)
lev = max(lev, DOM_ABNORMAL_EXIT)
if 'user_pref("layers.use-deprecated-textures", true);' in extraPrefs:
# Bug 933569
# Doing the change *here* only works because this is a small leak that shouldn't affect the reads in alh
alh.expectedToLeak = True
if os.path.exists(leakLogFile) and status == 0 and detect_leaks.amiss(knownPath, leakLogFile, verbose=not quiet) and not alh.expectedToLeak:
alh.printAndLog("@@@ Unexpected leak or leak pattern")
alh.printAndLog("Leak details: " + os.path.basename(leakLogFile))
lev = max(lev, DOM_NEW_LEAK)
else:
if alh.sawOMGLEAK and not alh.expectedToLeak:
lev = max(lev, DOM_NEW_LEAK)
if leakLogFile:
# Remove the main leak log file, plus any plugin-process leak log files
for f in glob.glob(leakLogFile + "*"):
os.remove(f)
if (lev > DOM_FINE) and logPrefix:
with open(logPrefix + "-output.txt", "w") as outlog:
outlog.writelines(alh.fullLogHead)
subprocess.call(["gzip", logPrefix + "-output.txt"])
with open(logPrefix + "-summary.txt", "w") as summaryLogFile:
summaryLogFile.writelines(alh.summaryLog)
if (lev == DOM_FINE) and logPrefix:
removeIfExists(logPrefix + "-core.gz")
removeIfExists(logPrefix + "-crash.txt")
if not leaveProfile:
shutil.rmtree(profileDir)
print "DOMFUZZ INFO | domInteresting.py | " + str(lev)
return (lev, alh.FRClines)
