Improve curl code.
[monky] / src / mpd.c
index 76ea65d..ec929b7 100644 (file)
--- a/src/mpd.c
+++ b/src/mpd.c
+/* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
+ * vim: ts=4 sw=4 noet ai cindent syntax=c
+ *
+ * Conky, a system monitor, based on torsmo
+ *
+ * Any original torsmo code is licensed under the BSD license
+ *
+ * All code written since the fork of torsmo is licensed under the GPL
+ *
+ * Please see COPYING for details
+ *
+ * Copyright (c) 2005-2010 Brenden Matthews, Philip Kovacs, et. al.
+ *     (see AUTHORS)
+ * All rights reserved.
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
 #include "conky.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
+#include "logging.h"
+#include "timed_thread.h"
+#include "timeinfo.h"
 #include "libmpdclient.h"
+#include "mpd.h"
 
+/* server connection data */
+static char mpd_host[128];
+static char mpd_password[128];
+static int mpd_port;
 
-void update_mpd()
-{
-       struct information *current_info = &info;
-       current_info->conn =
-                       mpd_newConnection(current_info->mpd.host,
-                                         current_info->mpd.port, 10);
-       if (current_info->conn->error) {
-               //fprintf(stderr, "%s\n", current_info->conn->errorStr);
-               mpd_closeConnection(current_info->conn);
-               if (current_info->mpd.artist == NULL)
-                       current_info->mpd.artist =
-                                       malloc(TEXT_BUFFER_SIZE);
-               if (current_info->mpd.album == NULL)
-                       current_info->mpd.album = malloc(TEXT_BUFFER_SIZE);
-               if (current_info->mpd.title == NULL)
-                       current_info->mpd.title = malloc(TEXT_BUFFER_SIZE);
-               strcpy(current_info->mpd.artist, "Unknown");
-               strcpy(current_info->mpd.album, "Unknown");
-               strcpy(current_info->mpd.title, "Unknown");
-               current_info->mpd.status = "MPD not responding";
-               current_info->mpd.bitrate = 0;
-               current_info->mpd.progress = 0;
-               current_info->mpd.elapsed = 0;
-               current_info->mpd.length = 0;
-               return;
+/* this is >0 if the current password was set from MPD_HOST */
+static int mpd_environment_password = 0;
+
+/* global mpd information */
+static struct mpd_s mpd_info;
+
+/* number of users of the above struct */
+static int refcount = 0;
+
+void mpd_set_host(const char *host)
+{
+       snprintf(mpd_host, 128, "%s", host);
+
+       if (mpd_environment_password) {
+               /* for security, dont use environment password when user specifies host in config */
+               mpd_clear_password();
+       }
+}
+void mpd_set_password(const char *password, int from_environment)
+{
+       snprintf(mpd_password, 128, "%s", password);
+       mpd_environment_password = from_environment;
+}
+void mpd_clear_password(void)
+{
+       *mpd_password = '\0';
+       mpd_environment_password = 0;
+}
+int mpd_set_port(const char *port)
+{
+       int val;
+
+       val = strtol(port, 0, 0);
+       if (val < 1 || val > 0xffff)
+               return 1;
+       mpd_port = val;
+       return 0;
+}
+
+void init_mpd(void)
+{
+       if (!(refcount++))      /* first client */
+               memset(&mpd_info, 0, sizeof(mpd_info));
+}
+
+struct mpd_s *mpd_get_info(void)
+{
+       return &mpd_info;
+}
+
+static void clear_mpd(void)
+{
+#define xfree(x) if (x) free(x)
+       xfree(mpd_info.title);
+       xfree(mpd_info.artist);
+       xfree(mpd_info.album);
+       /* do not free() the const char *status! */
+       /* do not free() the const char *random! */
+       /* do not free() the const char *repeat! */
+       xfree(mpd_info.track);
+       xfree(mpd_info.name);
+       xfree(mpd_info.file);
+#undef xfree
+       memset(&mpd_info, 0, sizeof(struct mpd_s));
+}
+
+void free_mpd(void)
+{
+       if (!(--refcount))      /* last client */
+               clear_mpd();
+}
+
+static void *update_mpd_thread(void *) __attribute__((noreturn));
+
+int update_mpd(void)
+{
+       int interval;
+       static timed_thread *thread = NULL;
+
+       if (thread)
+               return 0;
+
+       interval = info.music_player_interval * 1000000;
+       thread = timed_thread_create(&update_mpd_thread, &thread, interval);
+       if (!thread) {
+               NORM_ERR("Failed to create MPD timed thread");
+               return 0;
        }
+       timed_thread_register(thread, &thread);
+       if (timed_thread_run(thread))
+               NORM_ERR("Failed to run MPD timed thread");
+       return 0;
+}
+
+/* stringMAXdup dups at most text_buffer_size bytes */
+#define strmdup(x) strndup(x, text_buffer_size - 1)
 
+static void *update_mpd_thread(void *arg)
+{
+       static mpd_Connection *conn = NULL;
        mpd_Status *status;
        mpd_InfoEntity *entity;
-       mpd_sendCommandListOkBegin(current_info->conn);
-       mpd_sendStatusCommand(current_info->conn);
-       mpd_sendCurrentSongCommand(current_info->conn);
-       mpd_sendCommandListEnd(current_info->conn);
-       if ((status = mpd_getStatus(current_info->conn)) == NULL) {
-               //fprintf(stderr, "%s\n", current_info->conn->errorStr);
-               mpd_closeConnection(current_info->conn);
-               if (current_info->mpd.artist == NULL)
-                       current_info->mpd.artist =
-                                       malloc(TEXT_BUFFER_SIZE);
-               if (current_info->mpd.album == NULL)
-                       current_info->mpd.album = malloc(TEXT_BUFFER_SIZE);
-               if (current_info->mpd.title == NULL)
-                       current_info->mpd.title = malloc(TEXT_BUFFER_SIZE);
-               strcpy(current_info->mpd.artist, "Unknown");
-               strcpy(current_info->mpd.album, "Unknown");
-               strcpy(current_info->mpd.title, "Unknown");
-               current_info->mpd.status = "MPD not responding";
-               current_info->mpd.bitrate = 0;
-               current_info->mpd.progress = 0;
-               current_info->mpd.elapsed = 0;
-               current_info->mpd.length = 0;
-               return;
-       }
-       current_info->mpd.volume = status->volume;
-       //if (status->error)
-       //printf("error: %s\n", status->error);
+       timed_thread *me = *(timed_thread **)arg;
+       const char *emptystr = "";
+
+       while (1) {
+               if (!conn)
+                       conn = mpd_newConnection(mpd_host, mpd_port, 10);
+
+               if (*mpd_password) {
+                       mpd_sendPasswordCommand(conn, mpd_password);
+                       mpd_finishCommand(conn);
+               }
 
-       if (status->state == MPD_STATUS_STATE_PLAY) {
-               current_info->mpd.status = "Playing";
+               timed_thread_lock(me);
+
+               if (conn->error || conn == NULL) {
+                       NORM_ERR("MPD error: %s\n", conn->errorStr);
+                       mpd_closeConnection(conn);
+                       conn = 0;
+                       clear_mpd();
+
+                       mpd_info.status = "MPD not responding";
+                       timed_thread_unlock(me);
+                       if (timed_thread_test(me, 0)) {
+                               timed_thread_exit(me);
+                       }
+                       continue;
+               }
+
+               mpd_sendStatusCommand(conn);
+               if ((status = mpd_getStatus(conn)) == NULL) {
+                       NORM_ERR("MPD error: %s\n", conn->errorStr);
+                       mpd_closeConnection(conn);
+                       conn = 0;
+                       clear_mpd();
+
+                       mpd_info.status = "MPD not responding";
+                       timed_thread_unlock(me);
+                       if (timed_thread_test(me, 0)) {
+                               timed_thread_exit(me);
+                       }
+                       continue;
+               }
+               mpd_finishCommand(conn);
+               if (conn->error) {
+                       // fprintf(stderr, "%s\n", conn->errorStr);
+                       mpd_closeConnection(conn);
+                       conn = 0;
+                       timed_thread_unlock(me);
+                       if (timed_thread_test(me, 0)) {
+                               timed_thread_exit(me);
+                       }
+                       continue;
+               }
+
+               mpd_info.vol = status->volume;
+               if (status->random == 0) {
+                       mpd_info.random = "Off";
+               } else if (status->random == 1) {
+                       mpd_info.random = "On";
+               } else {
+                       mpd_info.random = "";
+               }
+               if (status->repeat == 0) {
+                       mpd_info.repeat = "Off";
+               } else if (status->repeat == 1) {
+                       mpd_info.repeat = "On";
+               } else {
+                       mpd_info.repeat = "";
+               }
+               /* if (status->error) {
+                       printf("error: %s\n", status->error);
+               } */
+
+               switch (status->state) {
+                       case MPD_STATUS_STATE_PLAY:
+                               mpd_info.status = "Playing";
+                               break;
+                       case MPD_STATUS_STATE_STOP:
+                               mpd_info.status = "Stopped";
+                               break;
+                       case MPD_STATUS_STATE_PAUSE:
+                               mpd_info.status = "Paused";
+                               break;
+                       default:
+                               mpd_info.status = "";
+                               clear_mpd();
+                               break;
+               }
+
+               if (status->state == MPD_STATUS_STATE_PLAY ||
+                   status->state == MPD_STATUS_STATE_PAUSE) {
+                       mpd_info.is_playing = 1;
+                       mpd_info.bitrate = status->bitRate;
+                       mpd_info.progress = (float) status->elapsedTime /
+                               status->totalTime;
+                       mpd_info.elapsed = status->elapsedTime;
+                       mpd_info.length = status->totalTime;
+               } else {
+                       mpd_info.progress = 0;
+                       mpd_info.is_playing = 0;
+                       mpd_info.elapsed = 0;
+               }
+
+               if (conn->error) {
+                       // fprintf(stderr, "%s\n", conn->errorStr);
+                       mpd_closeConnection(conn);
+                       conn = 0;
+                       timed_thread_unlock(me);
+                       if (timed_thread_test(me, 0)) {
+                               timed_thread_exit(me);
+                       }
+                       continue;
+               }
+
+               mpd_sendCurrentSongCommand(conn);
+               while ((entity = mpd_getNextInfoEntity(conn))) {
+                       mpd_Song *song = entity->info.song;
+
+                       if (entity->type != MPD_INFO_ENTITY_TYPE_SONG) {
+                               mpd_freeInfoEntity(entity);
+                               continue;
+                       }
+#define SONGSET(x) {                            \
+       free(mpd_info.x);                       \
+       if(song->x)                             \
+               mpd_info.x = strmdup(song->x);  \
+       else                                    \
+               mpd_info.x = strmdup(emptystr); \
+}
+                       SONGSET(artist);
+                       SONGSET(album);
+                       SONGSET(title);
+                       SONGSET(track);
+                       SONGSET(name);
+                       SONGSET(file);
+#undef SONGSET
+                       if (entity != NULL) {
+                               mpd_freeInfoEntity(entity);
+                               entity = NULL;
+                       }
+               }
+               mpd_finishCommand(conn);
+               if (conn->error) {
+                       // fprintf(stderr, "%s\n", conn->errorStr);
+                       mpd_closeConnection(conn);
+                       conn = 0;
+                       timed_thread_unlock(me);
+                       if (timed_thread_test(me, 0)) {
+                               timed_thread_exit(me);
+                       }
+                       continue;
+               }
+
+               timed_thread_unlock(me);
+               if (conn->error) {
+                       // fprintf(stderr, "%s\n", conn->errorStr);
+                       mpd_closeConnection(conn);
+                       conn = 0;
+                       if (timed_thread_test(me, 0)) {
+                               timed_thread_exit(me);
+                       }
+                       continue;
+               }
+
+               mpd_freeStatus(status);
+               /* if (conn) {
+                       mpd_closeConnection(conn);
+                       conn = 0;
+               } */
+               if (timed_thread_test(me, 0)) {
+                       timed_thread_exit(me);
+               }
+               continue;
        }
-       if (status->state == MPD_STATUS_STATE_STOP) {
-               current_info->mpd.status = "Stopped";
-               current_info->mpd.bitrate = 0;
-               current_info->mpd.progress = 0;
-               current_info->mpd.elapsed = 0;
-               current_info->mpd.length = 0;
-               if (current_info->mpd.artist == NULL)
-                       current_info->mpd.artist =
-                                       malloc(TEXT_BUFFER_SIZE);
-               if (current_info->mpd.album == NULL)
-                       current_info->mpd.album = malloc(TEXT_BUFFER_SIZE);
-               if (current_info->mpd.title == NULL)
-                       current_info->mpd.title = malloc(TEXT_BUFFER_SIZE);
-               strcpy(current_info->mpd.artist, "Stopped");
-               strcpy(current_info->mpd.album, "Stopped");
-               strcpy(current_info->mpd.title, "Stopped");
+       /* never reached */
+}
+
+static inline void format_media_player_time(char *buf, const int size,
+               int seconds)
+{
+       int days, hours, minutes;
+
+       if (times_in_seconds()) {
+               snprintf(buf, size, "%d", seconds);
+               return;
        }
-       if (status->state == MPD_STATUS_STATE_PAUSE) {
-               current_info->mpd.status = "Paused";
+
+       days = seconds / (24 * 60 * 60);
+       seconds %= (24 * 60 * 60);
+       hours = seconds / (60 * 60);
+       seconds %= (60 * 60);
+       minutes = seconds / 60;
+       seconds %= 60;
+
+       if (days > 0) {
+               snprintf(buf, size, "%i days %i:%02i:%02i", days,
+                               hours, minutes, seconds);
+       } else if (hours > 0) {
+               snprintf(buf, size, "%i:%02i:%02i", hours, minutes,
+                               seconds);
+       } else {
+               snprintf(buf, size, "%i:%02i", minutes, seconds);
        }
-       if (status->state == MPD_STATUS_STATE_UNKNOWN) {
-               current_info->mpd.status = "Unknown";
-               current_info->mpd.bitrate = 0;
-               current_info->mpd.progress = 0;
-               current_info->mpd.elapsed = 0;
-               current_info->mpd.length = 0;
-               if (current_info->mpd.artist == NULL)
-                       current_info->mpd.artist =
-                                       malloc(TEXT_BUFFER_SIZE);
-               if (current_info->mpd.album == NULL)
-                       current_info->mpd.album = malloc(TEXT_BUFFER_SIZE);
-               if (current_info->mpd.title == NULL)
-                       current_info->mpd.title = malloc(TEXT_BUFFER_SIZE);
-               strcpy(current_info->mpd.artist, "Unknown");
-               strcpy(current_info->mpd.album, "Unknown");
-               strcpy(current_info->mpd.title, "Unknown");
+}
+
+void print_mpd_elapsed(struct text_object *obj, char *p, int p_max_size)
+{
+       (void)obj;
+       format_media_player_time(p, p_max_size, mpd_get_info()->elapsed);
+}
+
+void print_mpd_length(struct text_object *obj, char *p, int p_max_size)
+{
+       (void)obj;
+       format_media_player_time(p, p_max_size, mpd_get_info()->length);
+}
+
+void print_mpd_percent(struct text_object *obj, char *p, int p_max_size)
+{
+       (void)obj;
+       percent_print(p, p_max_size, (int)(mpd_get_info()->progress * 100));
+}
+
+void print_mpd_bar(struct text_object *obj, char *p, int p_max_size)
+{
+       new_bar(obj, p, p_max_size, (int) (mpd_get_info()->progress * 255.0f));
+}
+
+void print_mpd_smart(struct text_object *obj, char *p, int p_max_size)
+{
+       struct mpd_s *mpd = mpd_get_info();
+       int len = obj->data.i;
+       if (len == 0 || len > p_max_size)
+               len = p_max_size;
+
+       memset(p, 0, p_max_size);
+       if (mpd->artist && *mpd->artist &&
+                       mpd->title && *mpd->title) {
+               snprintf(p, len, "%s - %s", mpd->artist,
+                               mpd->title);
+       } else if (mpd->title && *mpd->title) {
+               snprintf(p, len, "%s", mpd->title);
+       } else if (mpd->artist && *mpd->artist) {
+               snprintf(p, len, "%s", mpd->artist);
+       } else if (mpd->file && *mpd->file) {
+               snprintf(p, len, "%s", mpd->file);
+       } else {
+               *p = 0;
        }
-       if (status->state == MPD_STATUS_STATE_PLAY ||
-                  status->state == MPD_STATUS_STATE_PAUSE) {
-               current_info->mpd.bitrate = status->bitRate;
-               current_info->mpd.progress =
-                               (float) status->elapsedTime / status->totalTime;
-               current_info->mpd.elapsed = status->elapsedTime;
-               current_info->mpd.length = status->totalTime;
-                  }
-
-
-                  if (current_info->conn->error) {
-               //fprintf(stderr, "%s\n", current_info->conn->errorStr);
-                          mpd_closeConnection(current_info->conn);
-                          return;
-                  }
-
-                  mpd_nextListOkCommand(current_info->conn);
-
-                  while ((entity = mpd_getNextInfoEntity(current_info->conn))) {
-                          mpd_Song *song = entity->info.song;
-                          if (entity->type != MPD_INFO_ENTITY_TYPE_SONG) {
-                                  mpd_freeInfoEntity(entity);
-                                  continue;
-                          }
-
-                          if (current_info->mpd.artist == NULL)
-                                  current_info->mpd.artist =
-                                                  malloc(TEXT_BUFFER_SIZE);
-                          if (current_info->mpd.album == NULL)
-                                  current_info->mpd.album = malloc(TEXT_BUFFER_SIZE);
-                          if (current_info->mpd.title == NULL)
-                                  current_info->mpd.title = malloc(TEXT_BUFFER_SIZE);
-                          if (song->artist) {
-                                  strcpy(current_info->mpd.artist, song->artist);
-                          } else {
-                                  strcpy(current_info->mpd.artist, "Unknown");
-                          }
-                          if (song->album) {
-                                  strcpy(current_info->mpd.album, song->album);
-                          } else {
-                                  strcpy(current_info->mpd.album, "Unknown");
-                          }
-                          if (song->title) {
-                                  strcpy(current_info->mpd.title, song->title);
-                          } else {
-                                  strcpy(current_info->mpd.title, "Unknown");
-                          }
-                          if (entity != NULL) {
-                                  mpd_freeInfoEntity(entity);
-                          }
-                  }
-                  if (entity != NULL) {
-                          mpd_freeInfoEntity(entity);
-                  }
-
-                  if (current_info->conn->error) {
-               //fprintf(stderr, "%s\n", current_info->conn->errorStr);
-                          mpd_closeConnection(current_info->conn);
-                          return;
-                  }
-
-                  mpd_finishCommand(current_info->conn);
-                  if (current_info->conn->error) {
-               //fprintf(stderr, "%s\n", current_info->conn->errorStr);
-                          mpd_closeConnection(current_info->conn);
-                          return;
-                  }
-                  mpd_freeStatus(status);
-                  mpd_closeConnection(current_info->conn);
 }
+
+#define MPD_PRINT_GENERATOR(name, fmt) \
+void print_mpd_##name(struct text_object *obj, char *p, int p_max_size) \
+{ \
+       if (obj->data.i && obj->data.i < p_max_size) \
+               p_max_size = obj->data.i; \
+       snprintf(p, p_max_size, fmt, mpd_get_info()->name); \
+}
+
+MPD_PRINT_GENERATOR(title, "%s")
+MPD_PRINT_GENERATOR(artist, "%s")
+MPD_PRINT_GENERATOR(album, "%s")
+MPD_PRINT_GENERATOR(random, "%s")
+MPD_PRINT_GENERATOR(repeat, "%s")
+MPD_PRINT_GENERATOR(track, "%s")
+MPD_PRINT_GENERATOR(name, "%s")
+MPD_PRINT_GENERATOR(file, "%s")
+MPD_PRINT_GENERATOR(vol, "%d")
+MPD_PRINT_GENERATOR(bitrate, "%d")
+MPD_PRINT_GENERATOR(status, "%s")
+
+#undef MPD_PRINT_GENERATOR