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1password.el
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1password.el
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;;; 1password.el --- Retrive password from 1Password -*- lexical-binding: t; -*-
;; Copyright (C) 2019 Xu Chunyang
;; Author: Xu Chunyang <mail@xuchunyang.me>
;; Homepage: https://github.com/xuchunyang/1password.el
;; Package-Requires: ((emacs "25.1"))
;; Created: 2019年5月15日 晚饭后
;; Author: Henrique Goncalves <kamus@hadenes.io>
;; Updated: 2023-05-09
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This package needs the command op, it is the 1Password command line tool
;; <https://support.1password.com/command-line/>.
;;; Code:
;; The macro `let-alist' is already autoloaded, this expression is not
;; needed. However, for Emacs without let-alist.el, this expression fails
;; immediately and produces a clean reason.
(eval-when-compile (require 'let-alist))
(require 'json)
(require 'auth-source)
(defvar 1password--get-item-cache nil
"Cache for `1password-get-item'.
1Password is soooooo slow from here.")
(defgroup 1password nil
"Use 1Password from Emacs."
:group 'tools)
(defcustom 1password-op-executable "op"
"The 1Password command-line tool."
:group '1password
:type 'string)
(defvar 1password--session-token nil
"Stores the session token from 1password-manual-signin")
(defun 1password-manual-signin (password)
"Prompt for a password, sign into 1password, and then set 1password--session-token with the resulting password"
(interactive (list (read-passwd "1password password: ")))
(let
((token (with-temp-buffer
(if (zerop (call-process-region password nil 1password-op-executable nil t nil "signin" "--raw"))
(buffer-string)
(error "'op signin --raw' failed: %s" (buffer-string))))))
(setq 1password--session-token token)
(message "Saved 1password session token")))
(defun 1password--call-op (&rest args)
"Execute op with args"
(let* ((session-args (if 1password--session-token `("--session" ,1password--session-token) nil)))
(apply 'call-process 1password-op-executable nil t nil (append args session-args))))
(defun 1password--json-read (string)
"Read JSON from STRING."
(condition-case err
(json-parse-string string)
(error
(error "JSON parsing error: %s" (error-message-string err)))))
;;;###autoload
(defun 1password-list-items ()
"List all items in 1Password."
(let ((cached-items (assoc (downcase "*all_items_list*") 1password--get-item-cache)))
(if cached-items
(cdr cached-items)
(with-temp-buffer
(if (zerop (1password--call-op "item" "list" "--format" "json"))
(progn
(goto-char (point-min))
(let ((items (1password--json-read (buffer-string))))
(push (cons (downcase "*all_items_list*") items) 1password--get-item-cache)
items))
(error "'op item list' failed: %s" (buffer-string)))))))
;;;###autoload
(defun 1password-get-item (name)
"Return json object for the NAME item."
(let ((cached-item (assoc (downcase name) 1password--get-item-cache)))
(if cached-item
(cdr cached-item)
(with-temp-buffer
(if (zerop (1password--call-op "item" "get" name "--format" "json"))
(progn
(goto-char (point-min))
(let ((item (1password--json-read (buffer-string))))
(push (cons (downcase name) item) 1password--get-item-cache)
item))
(error "'op item get' failed: %s" (buffer-string)))))))
(defun 1password-get-fields (name)
"Return the fields of the 1Password item with the given NAME."
(let ((item (1password-get-item name)))
(when (string= "" name)
(user-error "Name can't be empty"))
(append (gethash "fields" item) nil)))
;;;###autoload
(defun 1password-get-field (name field &optional copy)
"Return the value of the specified FIELD in the 1Password item with the given NAME."
(when (string= "" name)
(user-error "Name can't be empty"))
(when (string= "" field)
(user-error "Field can't be empty"))
(let ((fields (1password-get-fields name)))
(catch 'getfield
(dolist (field-item fields)
(let ((field-label (gethash "label" field-item))
(field-value (gethash "value" field-item)))
(when (string= field field-label)
(when copy
(kill-new field-value)
(message "Field %s of %s copied: %s" field name field-value))
(throw 'getfield field-value))))
(error "Field '%s' not found in item '%s'" field name))))
;;;###autoload
(defun 1password-get-password (name &optional copy)
"Return password of the NAME item."
(1password-get-field name "password" copy))
;;;###autoload
(defun 1password-search (field value)
"Search for item having VALUE in FIELD in 1Password."
(when (string= "" field)
(user-error "Field can't be empty"))
(when (string= "" value)
(user-error "Value can't be empty"))
(let
((matched-items
(let ((items (1password-list-items))
(case-fold-search t))
(cl-remove-if-not (lambda (item) (string-match-p value (gethash field item))) items))))
(mapcar
(lambda (item)
(let ((item-fields (1password-get-fields (gethash "id" item)))
(item-hash (make-hash-table :test 'equal)))
(puthash "host" (gethash "title" item) item-hash)
(dolist (field-item item-fields)
(let ((field-label (gethash "label" field-item))
(field-value (gethash "value" field-item)))
(when (string= field-label "api_key")
(puthash "api_key" field-value item-hash))
(when (string= field-label "password")
(puthash "secret" field-value item-hash))
(when (string= field-label "email")
(puthash "login" field-value item-hash)
(puthash "user" field-value item-hash))
(when (string= field-label "username")
(puthash "login" field-value item-hash)
(puthash "user" field-value item-hash))))
item-hash))
matched-items)))
(defun 1password-search-filter-username (accounts &optional username)
"Filter results of `1password-search' ACCOUNTS by USERNAME.
ACCOUNTS can be the results of `1password-search' or a string to
search which will call `1password-search' as a convenience."
(let* ((accounts (if (vectorp accounts)
accounts (1password-search "title" accounts)))
;; filter out matches that are not logins
(accounts (seq-filter (lambda (elt) (gethash "login" elt)) accounts)))
(if (and (stringp username) (not (string= username "")))
(seq-filter (lambda (elt)
(when-let ((login (gethash "login" elt)))
(string= login username)))
accounts)
accounts)))
;;================================= auth-source =================================
(defun 1password-auth-source-search (&rest spec)
"Search 1Password according to SPEC.
See `auth-source-search' for a description of the plist SPEC."
(let* ((host (plist-get spec :host))
(max (plist-get spec :max))
(user (plist-get spec :user))
(res (mapcar #'1password-auth-source--build-result
(1password-search-filter-username host user))))
(seq-take res max)))
(defun 1password-auth-source--build-result (elt)
"Build a auth-source result for ELT.
This is meant to be used by `mapcar' for the results from
`1password-search-filter-username'."
(let ((l '()))
(maphash
(lambda (key value)
(setq l (cons (cons (intern (concat ":" key)) value) l )))
elt)
(flatten-tree l)))
(defvar 1password-auth-source-backend
(auth-source-backend :type '1password
:source "." ;; not used
:search-function #'1password-auth-source-search)
"Auth-source backend variable for 1Password.")
(defun 1password-auth-source-backend-parse (entry)
"Create auth-source backend from ENTRY."
(when (eq entry '1password)
(auth-source-backend-parse-parameters entry 1password-auth-source-backend)))
;; advice to add custom auth-source function
(if (boundp 'auth-source-backend-parser-functions)
(add-hook 'auth-source-backend-parser-functions
#'1password-auth-source-backend-parse)
(advice-add 'auth-source-backend-parse
:before-until #'1password-auth-source-backend-parse))
;;;###autoload
(defun 1password-auth-source-enable ()
"Enable 1password auth-source by adding it to `auth-sources'."
(interactive)
(add-to-list 'auth-sources '1password)
(auth-source-forget-all-cached)
(message "1Password: auth-source enabled"))
(provide '1password)
;;; 1password.el ends here