def get_ff_cache(profile_dir, store_body=False):
cache_dir = os.path.join(profile_dir, "Cache")
if not os.path.isdir(cache_dir):
return [] # Firefox updated the cache dir structure since our study
cache_map = os.path.join(cache_dir, "_CACHE_MAP_")
cache_dump = os.path.join(BASE_TMP_DIR, append_timestamp("cache") +
rand_str())
create_dir(cache_dump)
subprocess.call([PERL_PATH, CACHE_PERL_SCRIPT, cache_map, "--recover=" +
cache_dump])
cache_items = []
db_items = ("Etag", "Request String", "Expires", "Cache-Control")
for fname in glob(os.path.join(cache_dump, "*_metadata")):
item = {}
try:
with open(fname) as f:
metadata = f.read()
item = parse_metadata(metadata)
for db_item in db_items:
if db_item not in item:
item[db_item] = ""
# If a response includes both an Expires header and a max-age
# directive, the max-age directive overrides the Expires header
# (http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html)
expiry_delta_sec = 0
if "Expires" in item:
# parse expiry date
expiry = parse_date(item["Expires"])
if expiry:
expiry_delta = expiry - datetime.now()
expiry_delta_sec = expiry_delta.total_seconds()
if "Cache-Control:" in item:
# parse max-age directive
cache_directives =\
parse_cache_control_header(item["Cache-Control"],
cls=ResponseCacheControl)
if "max-age" in cache_directives:
expiry_delta_sec = cache_directives["max-age"]
if expiry_delta_sec < DELTA_MONTH:
continue
item["Expiry-Delta"] = expiry_delta_sec
with open(fname[:-9]) as f:
data = f.read()
item["Body"] = data if store_body else "" # store as BLOB
item["Hash"] = hash_text(base64.b64encode(data))
except IOError as exc:
print "Error processing cache: %s: %s" % (exc,
traceback.format_exc())
cache_items.append(item)
if os.path.isdir(cache_dump):
shutil.rmtree(cache_dump)
return cache_items
def get_ff_cache(profile_dir, store_body=False):
cache_dir = os.path.join(profile_dir, "Cache")
if not os.path.isdir(cache_dir):
return [] # Firefox updated the cache dir structure since our study
cache_map = os.path.join(cache_dir, "_CACHE_MAP_")
cache_dump = os.path.join(BASE_TMP_DIR,
append_timestamp("cache") + rand_str())
create_dir(cache_dump)
subprocess.call(
[PERL_PATH, CACHE_PERL_SCRIPT, cache_map, "--recover=" + cache_dump])
cache_items = []
db_items = ("Etag", "Request String", "Expires", "Cache-Control")
for fname in glob(os.path.join(cache_dump, "*_metadata")):
item = {}
try:
with open(fname) as f:
metadata = f.read()
item = parse_metadata(metadata)
for db_item in db_items:
if db_item not in item:
item[db_item] = ""
# If a response includes both an Expires header and a max-age
# directive, the max-age directive overrides the Expires header
# (http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html)
expiry_delta_sec = 0
if "Expires" in item:
# parse expiry date
expiry = parse_date(item["Expires"])
if expiry:
expiry_delta = expiry - datetime.now()
expiry_delta_sec = expiry_delta.total_seconds()
if "Cache-Control:" in item:
# parse max-age directive
cache_directives =\
parse_cache_control_header(item["Cache-Control"],
cls=ResponseCacheControl)
if "max-age" in cache_directives:
expiry_delta_sec = cache_directives["max-age"]
if expiry_delta_sec < DELTA_MONTH:
continue
item["Expiry-Delta"] = expiry_delta_sec
with open(fname[:-9]) as f:
data = f.read()
item["Body"] = data if store_body else "" # store as BLOB
item["Hash"] = hash_text(base64.b64encode(data))
except IOError as exc:
print "Error processing cache: %s: %s" % (exc,
traceback.format_exc())
cache_items.append(item)
if os.path.isdir(cache_dump):
shutil.rmtree(cache_dump)
return cache_items
def insert_canvas_event(cursor, visit_info, be):
meta_id = 0
if be.event_type in cm.CANVAS_ALL_EVENTS:
metadata_hash = hash_text(be.log_text)
cursor.execute("SELECT id FROM metadata WHERE hash=:Hash and "
"event_type=:event_type",
{"Hash": metadata_hash, "event_type": be.event_type})
meta_id = cursor.fetchone()
if meta_id is None:
cursor.execute("INSERT INTO metadata VALUES (?, ?, ?, ?)",
(None, be.event_type, be.log_text, metadata_hash))
meta_id = cursor.lastrowid
else:
meta_id = meta_id[0] # fetchone returns a tuple
cursor.execute("INSERT INTO canvas VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
(None, visit_info.visit_id, be.url, be.js_file,
be.js_line, be.event_type, 0, meta_id))
return cursor.lastrowid
def insert_canvas_event(cursor, visit_info, be):
meta_id = 0
if be.event_type in cm.CANVAS_ALL_EVENTS:
metadata_hash = hash_text(be.log_text)
cursor.execute(
"SELECT id FROM metadata WHERE hash=:Hash and "
"event_type=:event_type", {
"Hash": metadata_hash,
"event_type": be.event_type
})
meta_id = cursor.fetchone()
if meta_id is None:
cursor.execute("INSERT INTO metadata VALUES (?, ?, ?, ?)",
(None, be.event_type, be.log_text, metadata_hash))
meta_id = cursor.lastrowid
else:
meta_id = meta_id[0] # fetchone returns a tuple
cursor.execute("INSERT INTO canvas VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
(None, visit_info.visit_id, be.url, be.js_file, be.js_line,
be.event_type, 0, meta_id))
return cursor.lastrowid
