mirror of
https://github.com/elisspace/autopsy.git
synced 2026-10-02 07:19:53 +00:00
Cleaned up skype queries and tested them
This commit is contained in:
U-BASIS\dsmyda
@@ -76,11 +76,8 @@ class SkypeAnalyzer(general.AndroidComponentAnalyzer):
|
||||
as they would be excluded in the join. Since the chatItem table stores both the
|
||||
group id or skype_id in one column, an implementation decision was made to union
|
||||
the person and particiapnt table together so that all rows are matched in one join
|
||||
with chatItem. This result is consistently labeled contact_list_with_groups in the
|
||||
with chatItem. This result is consistently labeled contact_book_w_groups in the
|
||||
following queries.
|
||||
- In order to keep the formatting of the name consistent throughout each query,
|
||||
a _format_user_name() function was created to encapsulate the CASE statement
|
||||
that was being shared across them. Refer to the method for more details.
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
@@ -93,7 +90,12 @@ class SkypeAnalyzer(general.AndroidComponentAnalyzer):
|
||||
account_query_result = skype_db.runQuery(
|
||||
"""
|
||||
SELECT entry_id,
|
||||
"""+_format_user_name()+""" AS name
|
||||
CASE
|
||||
WHEN Ifnull(first_name, "") == "" AND Ifnull(last_name, "") == "" THEN entry_id
|
||||
WHEN first_name is NULL THEN replace(last_name, ",", "")
|
||||
WHEN last_name is NULL THEN replace(first_name, ",", "")
|
||||
ELSE replace(first_name, ",", "") || " " || replace(last_name, ",", "")
|
||||
END AS name
|
||||
FROM user
|
||||
"""
|
||||
)
|
||||
@@ -251,14 +253,6 @@ class SkypeCallLogsParser(TskCallLogsParser):
|
||||
|
||||
def __init__(self, calllog_db):
|
||||
"""
|
||||
Big picture:
|
||||
The query below creates a contacts_list_with_groups table, which
|
||||
represents the recipient info. A chatItem record holds ids for
|
||||
both the recipient and sender. The first join onto chatItem fills
|
||||
in the blanks for the recipients. The second join back onto person
|
||||
handles the sender info. The result is a table with all of the
|
||||
communication details.
|
||||
|
||||
Implementation details:
|
||||
- message_type w/ value 3 appeared to be the call type, regardless
|
||||
of if it was audio or video.
|
||||
@@ -266,37 +260,23 @@ class SkypeCallLogsParser(TskCallLogsParser):
|
||||
"""
|
||||
super(SkypeCallLogsParser, self).__init__(calllog_db.runQuery(
|
||||
"""
|
||||
SELECT contacts_list_with_groups.conversation_id,
|
||||
contacts_list_with_groups.participant_ids,
|
||||
contacts_list_with_groups.participants,
|
||||
time,
|
||||
duration,
|
||||
is_sender_me,
|
||||
person_id as sender_id,
|
||||
sender_name.name as sender_name
|
||||
SELECT contact_book_w_groups.conversation_id,
|
||||
contact_book_w_groups.participant_ids,
|
||||
messages.time,
|
||||
messages.duration,
|
||||
messages.is_sender_me,
|
||||
messages.person_id AS sender_id
|
||||
FROM (SELECT conversation_id,
|
||||
Group_concat(person_id) AS participant_ids,
|
||||
Group_concat("""+_format_user_name()+""") AS participants
|
||||
FROM particiapnt AS PART
|
||||
JOIN person AS P
|
||||
ON PART.person_id = P.entry_id
|
||||
Group_concat(person_id) AS participant_ids
|
||||
FROM particiapnt
|
||||
GROUP BY conversation_id
|
||||
UNION
|
||||
SELECT entry_id,
|
||||
NULL,
|
||||
"""+_format_user_name()+""" AS participant
|
||||
FROM person) AS contacts_list_with_groups
|
||||
JOIN chatitem AS C
|
||||
ON C.conversation_link = contacts_list_with_groups.conversation_id
|
||||
JOIN (SELECT entry_id as id,
|
||||
"""+_format_user_name()+""" AS name
|
||||
FROM person
|
||||
UNION
|
||||
SELECT entry_id as id,
|
||||
"""+_format_user_name()+""" AS name
|
||||
FROM user) AS sender_name
|
||||
ON sender_name.id = C.person_id
|
||||
WHERE message_type == 3
|
||||
SELECT entry_id AS conversation_id,
|
||||
NULL
|
||||
FROM person) AS contact_book_w_groups
|
||||
join chatitem AS messages
|
||||
ON messages.conversation_link = contact_book_w_groups.conversation_id
|
||||
WHERE message_type == 3
|
||||
"""
|
||||
)
|
||||
)
|
||||
@@ -347,7 +327,12 @@ class SkypeContactsParser(TskContactsParser):
|
||||
super(SkypeContactsParser, self).__init__(contact_db.runQuery(
|
||||
"""
|
||||
SELECT entry_id,
|
||||
"""+_format_user_name()+""" AS name
|
||||
CASE
|
||||
WHEN Ifnull(first_name, "") == "" AND Ifnull(last_name, "") == "" THEN entry_id
|
||||
WHEN first_name is NULL THEN replace(last_name, ",", "")
|
||||
WHEN last_name is NULL THEN replace(first_name, ",", "")
|
||||
ELSE replace(first_name, ",", "") || " " || replace(last_name, ",", "")
|
||||
END AS name
|
||||
FROM person
|
||||
"""
|
||||
)
|
||||
@@ -379,39 +364,25 @@ class SkypeMessagesParser(TskMessagesParser):
|
||||
"""
|
||||
super(SkypeMessagesParser, self).__init__(message_db.runQuery(
|
||||
"""
|
||||
SELECT contacts_list_with_groups.conversation_id,
|
||||
contacts_list_with_groups.participant_ids,
|
||||
contacts_list_with_groups.participants,
|
||||
time,
|
||||
content,
|
||||
device_gallery_path,
|
||||
is_sender_me,
|
||||
person_id as sender_id,
|
||||
sender_name.name AS sender_name
|
||||
FROM (SELECT conversation_id,
|
||||
Group_concat(person_id) AS participant_ids,
|
||||
Group_concat("""+_format_user_name()+""") AS participants
|
||||
FROM particiapnt AS PART
|
||||
JOIN person AS P
|
||||
ON PART.person_id = P.entry_id
|
||||
GROUP BY conversation_id
|
||||
UNION
|
||||
SELECT entry_id as conversation_id,
|
||||
NULL,
|
||||
"""+_format_user_name()+""" AS participant
|
||||
FROM person) AS contacts_list_with_groups
|
||||
JOIN chatitem AS C
|
||||
ON C.conversation_link = contacts_list_with_groups.conversation_id
|
||||
JOIN (SELECT entry_id as id,
|
||||
"""+_format_user_name()+""" AS name
|
||||
FROM person
|
||||
UNION
|
||||
SELECT entry_id as id,
|
||||
"""+_format_user_name()+""" AS name
|
||||
FROM user) AS sender_name
|
||||
ON sender_name.id = C.person_id
|
||||
SELECT contact_book_w_groups.conversation_id,
|
||||
contact_book_w_groups.participant_ids,
|
||||
messages.time,
|
||||
messages.content,
|
||||
messages.device_gallery_path,
|
||||
messages.is_sender_me,
|
||||
messages.person_id as sender_id
|
||||
FROM (SELECT conversation_id,
|
||||
Group_concat(person_id) AS participant_ids
|
||||
FROM particiapnt
|
||||
GROUP BY conversation_id
|
||||
UNION
|
||||
SELECT entry_id as conversation_id,
|
||||
NULL
|
||||
FROM person) AS contact_book_w_groups
|
||||
JOIN chatitem AS messages
|
||||
ON messages.conversation_link = contact_book_w_groups.conversation_id
|
||||
WHERE message_type != 3
|
||||
"""
|
||||
"""
|
||||
)
|
||||
)
|
||||
self._SKYPE_MESSAGE_TYPE = "Skype Message"
|
||||
@@ -469,25 +440,3 @@ class SkypeMessagesParser(TskMessagesParser):
|
||||
if group_ids is not None:
|
||||
return self.result_set.getString("conversation_id")
|
||||
return super(SkypeMessagesParser, self).get_thread_id()
|
||||
|
||||
def _format_user_name():
|
||||
"""
|
||||
This CASE SQL statement is used in many queries to
|
||||
format the names of users. For a user, there is a first_name
|
||||
column and a last_name column. Some of these columns can be null
|
||||
and our goal is to produce the cleanest data possible. In the event
|
||||
that both the first and last name columns are null, we return the skype_id
|
||||
which is stored in the database as 'entry_id'. Commas are removed from the name
|
||||
so that we can concatenate names into a comma seperate list for group chats.
|
||||
"""
|
||||
|
||||
return """
|
||||
CASE
|
||||
WHEN Ifnull(first_name, "") == "" AND Ifnull(last_name, "") == "" THEN entry_id
|
||||
WHEN first_name is NULL THEN replace(last_name, ",", "")
|
||||
WHEN last_name is NULL THEN replace(first_name, ",", "")
|
||||
ELSE replace(first_name, ",", "") || " " || replace(last_name, ",", "")
|
||||
END
|
||||
"""
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user