d664cb800c
- WARNING to operators: You MUST run fixup_2.sql in order to use this and newer versions of the bridge. - Archiving and full chat history fetches are now a configuration setting (and default to off). - Users now have to enable archiving manually by talking to the admin user, and are warned about the potential privacy implications. - Users can now completely remove themselves from the bridge, deleting all data. - Bridge administrators can now be specified by adding an entry to the 'administrators' SQL table with your JID. These can force-unregister specific users.
298 lines
14 KiB
Common Lisp
298 lines
14 KiB
Common Lisp
(in-package :whatsxmpp)
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(defun get-user-id (jid)
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"Get the user ID of JID, or NIL if none exists."
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(with-prepared-statement
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(get-user "SELECT id FROM users WHERE jid = ?")
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(let ((stripped (strip-resource jid)))
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(bind-parameters get-user stripped)
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(when (sqlite:step-statement get-user)
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(first (column-values get-user))))))
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(defun get-user-jid (id)
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"Get the user JID for the ID, or NIL if none exists."
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(with-prepared-statement
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(get-user "SELECT jid FROM users WHERE id = ?")
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(bind-parameters get-user id)
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(when (sqlite:step-statement get-user)
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(first (column-values get-user)))))
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(defun get-user-contact-localparts (uid)
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"Returns a list of all contact localparts for UID."
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(with-prepared-statements
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((get-stmt "SELECT wa_jid FROM user_contacts WHERE user_id = ?"))
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(bind-parameters get-stmt uid)
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(loop
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while (sqlite:step-statement get-stmt)
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collect (sqlite:statement-column-value get-stmt 0))))
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(defun get-user-chat-id (uid localpart)
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"Get the user chat ID of LOCALPART for UID, or NIL if none exists."
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(with-prepared-statements
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((get-stmt "SELECT id FROM user_chats WHERE user_id = ? AND wa_jid = ?"))
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(bind-parameters get-stmt uid localpart)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (id) get-stmt
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id))))
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(defun get-user-chat-localpart (chat-id)
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"Get the user chat localpart for CHAT-ID, or NIL if none exists."
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(with-prepared-statements
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((get-stmt "SELECT wa_jid FROM user_chats WHERE id = ?"))
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(bind-parameters get-stmt chat-id)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (localpart) get-stmt
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localpart))))
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(defun get-user-chat-subject (uid localpart)
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"Get the user chat subject of LOCALPART for UID, or NIL if none exists."
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(with-prepared-statements
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((get-stmt "SELECT subject FROM user_chats WHERE user_id = ? AND wa_jid = ?"))
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(bind-parameters get-stmt uid localpart)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (subject) get-stmt
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subject))))
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(defun get-user-chat-resource (uid localpart)
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"Get the user chat resource of LOCALPART for UID, or NIL if none exists."
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(with-prepared-statements
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((get-stmt "SELECT user_resource FROM user_chats WHERE user_id = ? AND wa_jid = ?"))
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(bind-parameters get-stmt uid localpart)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (resource) get-stmt
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(when (and resource (> (length resource) 0))
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resource)))))
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(defun get-participant-resource (chat-id localpart)
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"Get the participant resource for LOCALPART in CHAT-ID, or NIL if none exists."
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(with-prepared-statements
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((get-stmt "SELECT resource FROM user_chat_members WHERE chat_id = ? AND wa_jid = ?"))
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(bind-parameters get-stmt chat-id localpart)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (resource) get-stmt
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(when (and resource (> (length resource) 0))
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resource)))))
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(defun get-user-chat-joined (uid localpart)
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"Get the user chat resource of LOCALPART for UID, or NIL if none exists."
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(with-prepared-statements
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((get-stmt "SELECT ucj.jid FROM user_chats AS uc, user_chat_joined AS ucj WHERE uc.user_id = ? AND uc.wa_jid = ? AND uc.id = ucj.chat_id"))
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(bind-parameters get-stmt uid localpart)
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(loop
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while (sqlite:step-statement get-stmt)
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append (column-values get-stmt))))
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(defun get-contact-name (uid localpart &key no-phone-number)
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"Get a name for LOCALPART, a possible contact for the user with ID UID."
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(with-prepared-statements
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((get-stmt "SELECT name, notify FROM user_contacts WHERE user_id = ? AND wa_jid = ?"))
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(bind-parameters get-stmt uid localpart)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (name notify) get-stmt
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(or name notify (unless no-phone-number (substitute #\+ #\u localpart)))))))
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(defun get-contact-status (uid localpart)
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"Get the contact status text for LOCALPART, a possible contact for the user with ID UID."
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(declare (type integer uid) (type string localpart))
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(with-prepared-statements
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((get-stmt "SELECT status FROM user_contacts WHERE user_id = ? AND wa_jid = ?"))
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(bind-parameters get-stmt uid localpart)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (status) get-stmt
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status))))
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(defun insert-user-message (uid xmpp-id wa-id)
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"Inserts a mapping between the message IDs XMPP-ID and WA-ID for the user UID."
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(with-prepared-statements
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((insert-stmt "INSERT INTO user_messages (user_id, xmpp_id, wa_id) VALUES (?, ?, ?)"))
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(bind-parameters insert-stmt uid xmpp-id wa-id)
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(sqlite:step-statement insert-stmt)))
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(defun insert-user-chat (uid wa-id)
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"Inserts a user chat with localpart WA-ID into the database for the user with UID."
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(with-prepared-statements
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((insert-stmt "INSERT INTO user_chats (user_id, wa_jid) VALUES (?, ?) ON CONFLICT DO NOTHING"))
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(bind-parameters insert-stmt uid wa-id)
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(sqlite:step-statement insert-stmt)))
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(defun lookup-wa-msgid (uid wa-msgid)
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"Look up the XMPP ID for the WhatsApp message ID WA-MSGID, when received for the user UID."
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(with-prepared-statements
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((get-stmt "SELECT xmpp_id FROM user_messages WHERE user_id = ? AND wa_id = ?"))
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(bind-parameters get-stmt uid wa-msgid)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (xid) get-stmt
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xid))))
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(defun lookup-xmpp-msgid (uid xmpp-msgid)
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"Look up the WhatsApp message ID for the XMPP message ID XMPP-MSGID, when received for the user UID."
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(with-prepared-statements
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((get-stmt "SELECT wa_id FROM user_messages WHERE user_id = ? AND xmpp_id = ?"))
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(bind-parameters get-stmt uid xmpp-msgid)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (wid) get-stmt
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wid))))
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(defun get-contact-localparts (uid)
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"Get a list of contact localparts for the user with ID UID."
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(with-prepared-statements
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((get-stmt "SELECT wa_jid FROM user_contacts WHERE user_id = ?"))
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(bind-parameters get-stmt uid)
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(loop
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while (sqlite:step-statement get-stmt)
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collect (with-bound-columns (localpart) get-stmt localpart))))
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(defun get-user-groupchats (uid)
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"Get a list of groupchat info (cons pairs of LOCALPART . SUBJECT) for the user with ID UID."
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(with-prepared-statements
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((get-stmt "SELECT wa_jid, subject FROM user_chats WHERE user_id = ?"))
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(bind-parameters get-stmt uid)
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(loop
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while (sqlite:step-statement get-stmt)
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collect (with-bound-columns (localpart subject) get-stmt (cons localpart subject)))))
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(defun insert-xmpp-message (xm)
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"Inserts XM, a groupchat XMPP-MESSAGE, into the database."
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(assert (uiop:string-prefix-p "g" (conversation xm)) () "Tried to insert XMPP message for non-groupchat conversation ~A" (conversation xm))
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(let* ((chat-id (or
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(get-user-chat-id (uid xm) (conversation xm))
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(error "Couldn't find chat id for conversation ~A / uid ~A"
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(conversation xm) (uid xm))))
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(local-time:*default-timezone* local-time:+utc-zone+)
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(ts-unix (local-time:timestamp-to-unix (timestamp xm))))
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(with-prepared-statements
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((insert-stmt "INSERT INTO user_chat_history (user_id, chat_id, user_from, ts_unix, xmpp_id, orig_id, body, oob_url) VALUES (?, ?, ?, ?, ?, ?, ?, ?)"))
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(bind-parameters insert-stmt (1 (uid xm)) (2 chat-id) (3 (from xm)) (4 ts-unix) (5 (xmpp-id xm)) (6 (orig-id xm)) (7 (body xm)) (8 (oob-url xm)))
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(sqlite:step-statement insert-stmt))))
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(defun lookup-wa-msgid-in-history (uid wa-msgid)
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"Look up the XMPP ID for the WhatsApp message ID WA-MSGID, when received for the user UID."
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(with-prepared-statements
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((get-stmt "SELECT xmpp_id FROM user_chat_history WHERE user_id = ? AND orig_id = ?"))
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(bind-parameters get-stmt uid wa-msgid)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (xid) get-stmt
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xid))))
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(defun user-archiving-enabled-p (uid)
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"Returns a generalized boolean for whether the user with ID UID has archiving enabled or not."
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(with-prepared-statements
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((get-stmt "SELECT enable_archiving FROM users WHERE id = ?"))
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(bind-parameters get-stmt uid)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (ena) get-stmt
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(not (eql ena 0))))))
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(defun user-set-archiving-state (uid enabled)
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"Set the user's archiving state for the user with ID UID to ENABLED (either T or NIL)."
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(let ((ena (if enabled 1 0)))
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(with-prepared-statements
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((set-stmt "UPDATE users SET enable_archiving = ? WHERE id = ?"))
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(bind-parameters set-stmt ena uid)
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(sqlite:step-statement set-stmt))))
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(defun jid-admin-p (jid)
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"Returns a generalized boolean for whether the JID is a bridge administrator."
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(with-prepared-statements
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((get-stmt "SELECT id FROM administrators WHERE jid = ?"))
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(bind-parameters get-stmt jid)
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(when (sqlite:step-statement get-stmt)
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t)))
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(defun db-unregister-user (uid)
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"Unregister the user with ID UID."
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(with-prepared-statements
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((remove-user-stmt "DELETE FROM users WHERE id = ?")
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(remove-contacts-stmt "DELETE FROM user_contacts WHERE user_id = ?")
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(remove-messages-stmt "DELETE FROM user_messages WHERE user_id = ?")
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(remove-chats-stmt "DELETE FROM user_chats WHERE user_id = ?")
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(get-chats-stmt "SELECT id FROM user_chats WHERE user_id = ?")
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(remove-chat-members-stmt "DELETE FROM user_chat_members WHERE chat_id = ?")
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(remove-chat-joined-stmt "DELETE FROM user_chat_joined WHERE chat_id = ?")
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(remove-chat-history-stmt "DELETE FROM user_chat_history WHERE user_id = ?"))
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(with-transaction ()
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(bind-parameters get-chats-stmt uid)
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(loop
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while (sqlite:step-statement get-chats-stmt)
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do (with-bound-columns (chatid) get-chats-stmt
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(loop
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for stmt in (list remove-chat-members-stmt remove-chat-joined-stmt remove-chat-history-stmt)
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do (progn
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(sqlite:reset-statement stmt)
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(bind-parameters stmt chatid)
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(sqlite:step-statement stmt)))))
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(loop
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for stmt in (list remove-chats-stmt remove-messages-stmt remove-contacts-stmt remove-user-stmt)
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do (progn
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(sqlite:reset-statement stmt)
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(bind-parameters stmt uid)
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(sqlite:step-statement stmt))))))
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(defun get-chat-history-ts (uid chat-id xmpp-id)
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"Look up the UNIX timestamp for the given UID, CHAT-ID and XMPP-ID."
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(with-prepared-statements
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((get-stmt "SELECT ts_unix FROM user_chat_history WHERE user_id = ? AND chat_id = ? AND xmpp_id = ?"))
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(bind-parameters get-stmt uid chat-id xmpp-id)
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(when (sqlite:step-statement get-stmt)
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(with-bound-columns (tsu) get-stmt
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tsu))))
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(defun query-archive (uid chat-id &key start end (limit 100) reference-stanza-id forward-page)
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"Query the chat history archive for the chat identified by CHAT-ID and UID. Optionally narrow the query using START and END (UNIX timestamps), returning at most LIMIT items (which is clamped to 100).
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If an RSM REFERENCE-STANZA-ID is provided, narrow the query to be either after (T) or before (NIL) the history entry with that stanza ID, depending on the value of FORWARD-PAGE (see brackets)."
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(let ((statement (make-string-output-stream))
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(localpart (get-user-chat-localpart chat-id))
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(local-time:*default-timezone* local-time:+utc-zone+)
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(args (list chat-id uid)) ; WARNING this list is nreverse'd later!
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(items-returned 0)
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(sqlite-stmt))
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(format statement "SELECT user_from, ts_unix, xmpp_id, orig_id, body, oob_url FROM user_chat_history WHERE user_id = ? AND chat_id = ?")
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(when reference-stanza-id
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(let ((reference-ts (or
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(get-chat-history-ts uid chat-id reference-stanza-id)
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(error "Couldn't locate reference stanza ID ~A" reference-stanza-id))))
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(if forward-page
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(setf start reference-ts)
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(setf end reference-ts))))
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(when start
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(format statement " AND ts_unix > ?")
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(push start args))
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(when end
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(format statement " AND ts_unix < ?")
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(push end args))
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(unless limit
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(setf limit 100))
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(when (> limit 100)
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(setf limit 100)) ; clamp me owo
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;; We copy a trick from biboumi: in order to figure out whether there are
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;; more results if not for the limit existing, simply increment the limit
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;; by 1 and see if you get the extra element.
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(format statement " ORDER BY ts_unix ~A LIMIT ~A" (if forward-page "ASC" "DESC") (1+ limit))
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(setf args (nreverse args))
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(bt:with-recursive-lock-held (*db-lock*)
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(let ((stmt-text (get-output-stream-string statement)))
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(setf sqlite-stmt (sqlite:prepare-statement *db* stmt-text)))
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(loop
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for param in args
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for n from 1
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do (sqlite:bind-parameter sqlite-stmt n param))
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(values
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(funcall
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(if forward-page #'identity #'nreverse)
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(loop
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while (sqlite:step-statement sqlite-stmt)
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do (incf items-returned)
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while (<= items-returned limit)
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collect (with-bound-columns (from ts-unix xmpp-id orig-id body oob-url) sqlite-stmt
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(make-instance 'xmpp-message
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:uid uid
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:conversation localpart
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:from from
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:timestamp (local-time:unix-to-timestamp ts-unix)
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:xmpp-id xmpp-id
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:orig-id orig-id
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:body body
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:oob-url oob-url))))
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(<= items-returned limit)))))
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