def guess_plugin(self, plugin_name):
"""Check for the existence of the named plugin"""
path_nodes, version_nodes, all_versions = \
wadt.loadTables(wac.getDbPath(self.app_name, plugin_name), False)
self.error_page_fingerprint = wafu.identify_error_page(self.url)
for file in wafu.pick_indicator_files(version_nodes, all_versions):
try:
#TODO: factor out construction of path to plugin files...
#not all plugin dirs can be found simple appending
url = self.url + plugin_name + file
#self.logger.logExtraInfo(" Trying " + url + "...")
data = wafu.urlread_spoof_ua(url)
#Check for custom 404
if wafu.compare_to_error_page(self.error_page_fingerprint, data):
return False
#self.logger.logExtraInfo("found!")
return True
break
except urllib2.URLError, e:
#self.logger.logExtraInfo("URLError: %s" % e)
pass
except HTTPException, e2:
#self.logger.logExtraInfo("HTTPError: %s" % e2)
pass
def guess_app(self, app_name):
"""Probe a small number of paths to verify the existence (but not the
version) of a particular app
"""
if not self.error_page_fingerprint and not self.already_checked_for_error_page:
print "WARN: Fetching error page because it was not available"
self.error_page_fingerprint = wafu.identify_error_page(self.url)
self.already_checked_for_error_page = True
path_nodes, version_nodes, all_versions = wadt.loadTables(wac.getDbPath(app_name), printStats=False)
for file in wac.APP_CONFIG[app_name]["indicatorFiles"]:
possible_vers = self.fingerprint_file(file, path_nodes, version_nodes, all_versions)
if possible_vers:
return True
return False
def guess_apps(self, app_list=None):
"""Probe a small number of indicator files for each supported webapp to
quickly check for existence, but not version.
"""
possible_apps = []
if not self.error_page_fingerprint and not self.already_checked_for_error_page:
self.error_page_fingerprint = wafu.identify_error_page(self.url)
self.already_checked_for_error_page = True
if not app_list:
app_list = wac.APP_CONFIG.keys()
for app in app_list:
if self.guess_app(app):
possible_apps.append(app)
if self._host_down_errors >= HOST_DOWN_THRESHOLD:
break
return possible_apps
def fingerprint(self):
"""Select num_probes most useful paths, and fetch them
from the site at url. Return an ordered list of possible versions or
[].
"""
self._load_db()
paths = wafu.pick_fingerprint_files(self.path_nodes, self.all_versions)
self.logger.logStartFingerprint(self.url, self.app_name)
self.error_page_fingerprint = wafu.identify_error_page(self.url)
possible_vers = []
for path in paths[:self.num_probes]:
curr_vers = self.fingerprint_file(path)
if curr_vers:
possible_vers.append(curr_vers)
if self._host_down_errors >= HOST_DOWN_THRESHOLD:
break
ver_set = wafu.collapse_version_possibilities(possible_vers)
self.ver_list = list(ver_set)
#if more than one possibility, try to narrow it by winnowing!
if len(self.ver_list) > 1 and self.winnow:
print "ver_list before winnowing:"
for v in self.ver_list:
print v.vstring
print "\n"
self.winnow_versions(possible_vers)
ver_set = wafu.collapse_version_possibilities(possible_vers)
self.ver_list = list(ver_set)
self.ver_list.sort()
if len(self.ver_list) > 1:
self.best_guess = wafu.pick_likely_version(self.ver_list)
elif len(self.ver_list) == 1:
self.best_guess = self.ver_list[0]
else:
self.best_guess = None
self.logger.logFinishFingerprint(self.ver_list, self.best_guess)
return self.ver_list
