1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
;;; emms-lastfm.el --- add your listened songs to your profile at last.fm
;; Copyright (C) 2006 Free Software Foundation, Inc.
;; Author: Tassilo Horn <tassilo@member.fsf.org>
;; Keywords: emms, mp3, mpeg, multimedia
;; This file is part of EMMS.
;; EMMS 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 2, or (at your option) any later version.
;; EMMS 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
;; EMMS; see the file COPYING. If not, write to the Free Software Foundation,
;; Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
;;; Commentary:
;; This code sends information about what music you are playing to last.fm.
;; See <URL:http://www.last.fm> and
;; <URL:http://www.audioscrobbler.net/wiki/Protocol1.1>.
;;; Sample configuration:
;; (setq emms-lastfm-username "my-user-name"
;; emms-lastfm-password "very-secret!")
;;; Usage:
;; To activate the last.fm emms plugin, run:
;; `M-x emms-lastfm-activate'
;; To deactivate the last.fm emms plugin, run:
;; `C-u -1 M-x emms-lastfm-activate'
;; -----------------------------------------------------------------------
;; TODO: Have a look at `emms-playing-time'. Stopping the timer may not be
;; needed.
(require 'url)
(defvar emms-lastfm-username ""
"Your last.fm username")
(defvar emms-lastfm-password ""
"Your last.fm password")
(defconst emms-lastfm-server "http://post.audioscrobbler.com/"
"The last.fm server responsible for the handshaking
procedure. Only for internal use.")
(defconst emms-lastfm-client-id "ems"
"The client ID of EMMS. Don't change it!")
(defconst emms-lastfm-client-version 0.1
"The version regitered at last.fm. Don't change it!")
;; used internally
(defvar emms-lastfm-buffer nil "-- only used internally --")
(defvar emms-lastfm-md5-challenge nil "-- only used internally --")
(defvar emms-lastfm-submit-url nil "-- only used internally --")
(defvar emms-lastfm-current-track nil "-- only used internally --")
(defvar emms-lastfm-timer nil "-- only used internally --")
(defun emms-lastfm-new-track-function ()
"This function runs whenever a new track starts and sets the
track submission timer."
(setq emms-lastfm-current-track
(emms-playlist-current-selected-track))
;; Tracks should be submitted, if they played 240 secs or half of their
;; length, whichever comes first.
(let ((secs (/ (emms-track-get emms-lastfm-current-track 'info-playing-time)
2)))
(when (> secs 240)
(setq secs 240))
(unless (< secs 15) ;; Skip titles shorter than 30 seconds
(setq emms-lastfm-timer
(run-with-timer secs nil 'emms-lastfm-submit-track)))))
(defun emms-lastfm-cancel-timer ()
(when emms-lastfm-timer
(cancel-timer emms-lastfm-timer)
(setq emms-lastfm-timer nil)))
(defun emms-lastfm-activate (&optional ARG)
"Start submitting the tracks you listened to to
http://www.last.fm, if ARG is positive. If ARG is negative or
zero submission of the tracks will be stopped. This applies to
the current track, too."
(interactive "p")
(if (not (and emms-lastfm-username emms-lastfm-password))
(message "%s"
(concat "EMMS: In order to activate the last.fm plugin you "
"first have to set both `emms-lastfm-username' and "
"`emms-lastfm-password'."))
(if (> ARG 0)
(progn
(add-hook 'emms-player-started-hook
'emms-lastfm-handshake-if-needed)
(add-hook 'emms-player-started-hook
'emms-lastfm-new-track-function)
(add-hook 'emms-player-stopped-hook
'emms-lastfm-cancel-timer)
(add-hook 'emms-player-paused-hook
'emms-lastfm-cancel-timer)
(message "EMMS Last.fm plugin activated."))
(remove-hook 'emms-player-started-hook
'emms-lastfm-handshake-if-needed)
(remove-hook 'emms-player-started-hook
'emms-lastfm-new-track-function)
(remove-hook 'emms-player-stopped-hook
'emms-lastfm-cancel-timer)
(remove-hook 'emms-player-paused-hook
'emms-lastfm-cancel-timer)
(cancel-timer emms-lastfm-timer)
(setq emms-lastfm-md5-challenge nil
emms-lastfm-submit-url nil
emms-lastfm-process nil
emms-lastfm-current-track nil)
(message "EMMS Last.fm plugin deactivated."))))
(defun read-line ()
(buffer-substring-no-properties (line-beginning-position)
(line-end-position)))
(defun emms-lastfm-handshake-if-needed ()
(when (not (and emms-lastfm-md5-challenge
emms-lastfm-submit-url))
(emms-lastfm-handshake)))
(defun emms-lastfm-handshake ()
"Handshakes with the last.fm server."
(let ((url-request-method "GET"))
(setq emms-lastfm-buffer
(url-retrieve (concat emms-lastfm-server "?hs=true&p=1.1"
"&c=" emms-lastfm-client-id
"&v=" (number-to-string
emms-lastfm-client-version)
"&u=" emms-lastfm-username)
'emms-lastfm-handshake-sentinel))))
(defun emms-lastfm-handshake-sentinel (&rest args)
"Parses the server reponse and inform the user if all worked
well or if an error occured."
(save-excursion
(set-buffer emms-lastfm-buffer)
(goto-char (point-min))
(re-search-forward (rx (or "UPTODATE" "UPDATE" "FAILED" "BADUSER"))
nil t)
(let ((response (read-line)))
(if (not (string-match (rx (or "UPTODATE""UPDATE")) response))
(progn
(cond ((string-match "FAILED" response)
(message "EMMS: Handshake failed: %s.") response)
((string-match "BADUSER" response)
(message "EMMS: Wrong username."))))
(when (string-match "UPDATE" response)
(message "EMMS: There's a new last.fm plugin version."))
(next-line)
(setq emms-lastfm-md5-challenge (read-line))
(next-line)
(setq emms-lastfm-submit-url (read-line))
(message "EMMS: Handshaking with server done.")))))
(defun emms-lastfm-submit-track ()
"Submits the current track (`emms-lastfm-current-track') to
last.fm."
(let* ((artist (emms-track-get emms-lastfm-current-track 'info-artist))
(title (emms-track-get emms-lastfm-current-track 'info-title))
(album (emms-track-get emms-lastfm-current-track 'info-album))
(musicbrainz-id "")
(track-length (number-to-string
(emms-track-get emms-lastfm-current-track
'info-playing-time)))
(date (format-time-string "%Y-%m-%d %H:%M:%S" (current-time) t))
(url-http-attempt-keepalives nil)
(url-request-method "POST")
(url-request-extra-headers
'(("Content-type" .
"application/x-www-form-urlencoded; charset=utf-8")))
(url-request-data (encode-coding-string
(concat "u=" emms-lastfm-username
"&s=" (md5 (concat
(md5 emms-lastfm-password)
emms-lastfm-md5-challenge))
"&a[0]=" artist
"&t[0]=" title
"&b[0]=" album
"&m[0]=" musicbrainz-id
"&l[0]=" track-length
"&i[0]=" date)
'utf-8)))
(setq emms-lastfm-buffer
(url-retrieve emms-lastfm-submit-url
'emms-lastfm-submission-sentinel))))
(defun emms-lastfm-submission-sentinel (&rest args)
"Parses the server reponse and inform the user if all worked
well or if an error occured."
(save-excursion
(set-buffer emms-lastfm-buffer)
(goto-char (point-min))
(if (re-search-forward "^OK$" nil t)
(progn
(message "EMMS: \"%s\" submitted to last.fm."
(emms-track-description emms-lastfm-current-track))
(kill-buffer emms-lastfm-buffer))
(message "EMMS: Song couldn't be submitted to last.fm."))))
(provide 'emms-lastfm)
;;; emms-lastfm.el ends here
|
