src/song.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Andrzej Rybczak   *
   3  *   electricityispower@gmail.com   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include <curl/curl.h>
  22 #include <cstring>
  23 #include <string>
  24 #include <vector>
  25
  26 #include "misc.h"
  27 #include "scrobby.h"
  28 #include "song.h"
  29
  30 using std::string;
  31
  32 extern Handshake handshake;
  33
  34 extern pthread_mutex_t curl_lock;
  35 extern pthread_mutex_t handshake_lock;
  36
  37 extern std::vector<string> SongsQueue;
  38
  39 MPD::Song::Song() : itsSong(0),
  40                     itsStartTime(0),
  41                     itsNoticedPlayback(0),
  42                     itsIsStream(0)
  43 {
  44 }
  45
  46 MPD::Song::~Song()
  47 {
  48         if (itsSong)
  49                 mpd_freeSong(itsSong);
  50 }
  51
  52 void MPD::Song::Clear()
  53 {
  54         if (itsSong)
  55                 mpd_freeSong(itsSong);
  56         itsSong = 0;
  57         itsStartTime = 0;
  58         itsNoticedPlayback = 0;
  59         itsIsStream = 0;
  60 }
  61
  62 void MPD::Song::SetData(mpd_Song *song)
  63 {
  64         if (!song)
  65                 return;
  66         if (itsSong)
  67                 mpd_freeSong(itsSong);
  68         itsSong = song;
  69         itsIsStream = strncmp("http://", itsSong->file, 7) == 0;
  70 }
  71
  72 void MPD::Song::SetStartTime()
  73 {
  74         itsStartTime = time(NULL);
  75 }
  76
  77 void MPD::Song::Submit()
  78 {
  79         if (!itsSong)
  80                 return;
  81
  82         if (itsIsStream)
  83         {
  84                 itsSong->time = itsNoticedPlayback;
  85         }
  86
  87         pthread_mutex_lock(&handshake_lock);
  88         if (canBeSubmitted())
  89         {
  90                 if (handshake.status != "OK" || handshake.submission_url.empty())
  91                 {
  92                         Log(llInfo, "Problems with handshake status, queue song at position %d...", SongsQueue.size());
  93                         goto SUBMISSION_FAILED;
  94                 }
  95
  96                 Log(llInfo, "Submitting song...");
  97
  98                 string result, postdata;
  99                 CURLcode code;
 100
 101                 pthread_mutex_lock(&curl_lock);
 102                 CURL *submission = curl_easy_init();
 103
 104                 char *c_artist = curl_easy_escape(submission, itsSong->artist, 0);
 105                 char *c_title = curl_easy_escape(submission, itsSong->title, 0);
 106                 char *c_album = itsSong->album ? curl_easy_escape(submission, itsSong->album, 0) : NULL;
 107                 char *c_track = itsSong->track ? curl_easy_escape(submission, itsSong->track, 0) : NULL;
 108
 109                 postdata = "s=";
 110                 postdata += handshake.session_id;
 111                 postdata += "&a[0]=";
 112                 postdata += c_artist;
 113                 postdata += "&t[0]=";
 114                 postdata += c_title;
 115                 postdata += "&i[0]=";
 116                 postdata += IntoStr(itsStartTime);
 117                 postdata += "&o[0]=P";
 118                 postdata += "&r[0]=";
 119                 postdata += "&l[0]=";
 120                 postdata += IntoStr(itsSong->time);
 121                 postdata += "&b[0]=";
 122                 if (c_album)
 123                         postdata += c_album;
 124                 postdata += "&n[0]=";
 125                 if (c_track)
 126                         postdata += c_track;
 127                 postdata += "&m[0]=";
 128
 129                 curl_free(c_artist);
 130                 curl_free(c_title);
 131                 curl_free(c_album);
 132                 curl_free(c_track);
 133
 134                 Log(llVerbose, "URL: %s", handshake.submission_url.c_str());
 135                 Log(llVerbose, "Post data: %s", postdata.c_str());
 136
 137                 curl_easy_setopt(submission, CURLOPT_DNS_CACHE_TIMEOUT, 0);
 138                 curl_easy_setopt(submission, CURLOPT_NOSIGNAL, 1);
 139                 curl_easy_setopt(submission, CURLOPT_URL, handshake.submission_url.c_str());
 140                 curl_easy_setopt(submission, CURLOPT_POST, 1);
 141                 curl_easy_setopt(submission, CURLOPT_POSTFIELDS, postdata.c_str());
 142                 curl_easy_setopt(submission, CURLOPT_WRITEFUNCTION, write_data);
 143                 curl_easy_setopt(submission, CURLOPT_WRITEDATA, &result);
 144                 curl_easy_setopt(submission, CURLOPT_CONNECTTIMEOUT, curl_timeout);
 145                 code = curl_easy_perform(submission);
 146                 curl_easy_cleanup(submission);
 147                 pthread_mutex_unlock(&curl_lock);
 148
 149                 ignore_newlines(result);
 150
 151                 if (result == "OK")
 152                 {
 153                         Log(llInfo, "Song submitted.");
 154                 }
 155                 else
 156                 {
 157                         if (result.empty())
 158                         {
 159                                 Log(llInfo, "Error while submitting song: %s", curl_easy_strerror(code));
 160                         }
 161                         else
 162                         {
 163                                 Log(llInfo, "Audioscrobbler returned status %s", result.c_str());
 164                         }
 165                         goto SUBMISSION_FAILED;
 166                 }
 167         }
 168         if (0)
 169         {
 170                 SUBMISSION_FAILED: // so we cache not submitted song
 171
 172                 handshake.Clear(); // handshake probably failed if we are here, so reset it
 173                 Log(llVerbose, "Handshake status reset");
 174
 175                 string cache;
 176                 string offset = IntoStr(SongsQueue.size());
 177
 178                 char *c_artist = curl_easy_escape(0, itsSong->artist, 0);
 179                 char *c_title = curl_easy_escape(0, itsSong->title, 0);
 180                 char *c_album = itsSong->album ? curl_easy_escape(0, itsSong->album, 0) : NULL;
 181                 char *c_track = itsSong->track ? curl_easy_escape(0, itsSong->track, 0) : NULL;
 182
 183                 cache = "&a[";
 184                 cache += offset;
 185                 cache += "]=";
 186                 cache += c_artist;
 187                 cache += "&t[";
 188                 cache += offset;
 189                 cache += "]=";
 190                 cache += c_title;
 191                 cache += "&i[";
 192                 cache += offset;
 193                 cache += "]=";
 194                 cache += IntoStr(itsStartTime);
 195                 cache += "&o[";
 196                 cache += offset;
 197                 cache += "]=P";
 198                 cache += "&r[";
 199                 cache += offset;
 200                 cache += "]=";
 201                 cache += "&l[";
 202                 cache += offset;
 203                 cache += "]=";
 204                 cache += IntoStr(itsSong->time);
 205                 cache += "&b[";
 206                 cache += offset;
 207                 cache += "]=";
 208                 if (c_album)
 209                         cache += c_album;
 210                 cache += "&n[";
 211                 cache += offset;
 212                 cache += "]=";
 213                 if (c_track)
 214                         cache += c_track;
 215                 cache += "&m[";
 216                 cache += offset;
 217                 cache += "]=";
 218
 219                 Log(llVerbose, "Metadata: %s", cache.c_str());
 220
 221                 curl_free(c_artist);
 222                 curl_free(c_title);
 223                 curl_free(c_album);
 224                 curl_free(c_track);
 225
 226                 Cache(cache);
 227                 SongsQueue.push_back(cache);
 228                 Log(llInfo, "Song cached.");
 229         }
 230         pthread_mutex_unlock(&handshake_lock);
 231         Clear();
 232 }
 233
 234 bool MPD::Song::isStream() const
 235 {
 236         return itsIsStream;
 237 }
 238
 239 int & MPD::Song::Playback()
 240 {
 241         return itsNoticedPlayback;
 242 }
 243
 244 const mpd_Song *& MPD::Song::Data() const
 245 {
 246         return (const mpd_Song *&)itsSong;
 247 }
 248
 249 bool MPD::Song::canBeSubmitted()
 250 {
 251         if (!itsStartTime || itsSong->time < 30 || !itsSong->artist || !itsSong->title)
 252         {
 253                 if (!itsStartTime)
 254                 {
 255                         Log(llInfo, "Song's start time isn't known, not submitting.");
 256                 }
 257                 else if (itsSong->time < 30)
 258                 {
 259                         Log(llInfo, "Song's length is too short, not submitting.");
 260                 }
 261                 else if (!itsSong->artist || !itsSong->title)
 262                 {
 263                         Log(llInfo, "Song has missing tags, not submitting.");
 264                 }
 265                 return false;
 266         }
 267         else if (itsNoticedPlayback < 4*60 && itsNoticedPlayback < itsSong->time/2)
 268         {
 269                 Log(llInfo, "Noticed playback was too short, not submitting.");
 270                 return false;
 271         }
 272         return true;
 273 }
 274