mdw@git.distorted.org.uk Git - disorder/blob - lib/configuration.h

   1 /*
   2  * This file is part of DisOrder.
   3  * Copyright (C) 2004, 2005, 2006, 2007 Richard Kettlewell
   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, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * 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 Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  18  * USA
  19  */
  20 /** @file lib/configuration.h
  21  * @brief Configuration file support
  22  */
  23
  24 #ifndef CONFIGURATION_H
  25 #define CONFIGURATION_H
  26
  27 #include "speaker-protocol.h"
  28
  29 struct real_pcre;
  30
  31 /* Configuration is kept in a @struct config@; the live configuration
  32  * is always pointed to by @config@.  Values in @config@ are UTF-8 encoded.
  33  */
  34
  35 /** @brief A list of strings */
  36 struct stringlist {
  37   /** @brief Number of strings */
  38   int n;
  39   /** @brief Array of strings */
  40   char **s;
  41 };
  42
  43 /** @brief A list of list of strings */
  44 struct stringlistlist {
  45   /** @brief Number of string lists */
  46   int n;
  47   /** @brief Array of string lists */
  48   struct stringlist *s;
  49 };
  50
  51 /** @brief A collection of tracks */
  52 struct collection {
  53   /** @brief Module that supports this collection */
  54   char *module;
  55   /** @brief Filename encoding */
  56   char *encoding;
  57   /** @brief Root directory */
  58   char *root;
  59 };
  60
  61 /** @brief A list of collections */
  62 struct collectionlist {
  63   /** @brief Number of collections */
  64   int n;
  65   /** @brief Array of collections */
  66   struct collection *s;
  67 };
  68
  69 struct namepart {
  70   char *part;                           /* part */
  71   struct real_pcre *re;                 /* regexp */
  72   char *replace;                        /* replacement string */
  73   char *context;                        /* context glob */
  74   unsigned reflags;                     /* regexp flags */
  75 };
  76
  77 struct namepartlist {
  78   int n;
  79   struct namepart *s;
  80 };
  81
  82 struct transform {
  83   char *type;                           /* track or dir */
  84   char *context;                        /* sort or choose */
  85   char *replace;                        /* substitution string */
  86   struct real_pcre *re;                 /* compiled re */
  87   unsigned flags;                       /* regexp flags */
  88 };
  89
  90 struct transformlist {
  91   int n;
  92   struct transform *t;
  93 };
  94
  95 /** @brief System configuration */
  96 struct config {
  97   /* server config */
  98
  99   /** @brief Authorization algorithm */
 100   char *authorization_algorithm;
 101
 102   /** @brief All players */
 103   struct stringlistlist player;
 104
 105   /** @brief Allowed users */
 106   struct stringlistlist allow;
 107
 108   /** @brief Scratch tracks */
 109   struct stringlist scratch;
 110
 111   /** @brief Gap between tracks in seconds */
 112   long gap;
 113
 114   /** @brief Maximum number of recent tracks to record in history */
 115   long history;
 116
 117   /** @brief Expiry limit for noticed.db */
 118   long noticed_history;
 119
 120   /** @brief Trusted users */
 121   struct stringlist trust;
 122
 123   /** @brief User for server to run as */
 124   const char *user;
 125
 126   /** @brief Nice value for rescan subprocess */
 127   long nice_rescan;
 128
 129   /** @brief Paths to search for plugins */
 130   struct stringlist plugins;
 131
 132   /** @brief List of stopwords */
 133   struct stringlist stopword;
 134
 135   /** @brief List of collections */
 136   struct collectionlist collection;
 137
 138   /** @brief Database checkpoint byte limit */
 139   long checkpoint_kbyte;
 140
 141   /** @brief Databsase checkpoint minimum */
 142   long checkpoint_min;
 143
 144   /** @brief Path to mixer device */
 145   char *mixer;
 146
 147   /** @brief Mixer channel to use */
 148   char *channel;
 149
 150   long prefsync;                        /* preflog sync interval */
 151
 152   /** @brief Secondary listen address */
 153   struct stringlist listen;
 154
 155   /** @brief Alias format string */
 156   const char *alias;
 157
 158   /** @brief Enable server locking */
 159   int lock;
 160
 161   /** @brief Nice value for server */
 162   long nice_server;
 163
 164   /** @brief Nice value for speaker */
 165   long nice_speaker;
 166
 167   /** @brief Command execute by speaker to play audio */
 168   const char *speaker_command;
 169
 170   /** @brief Target sample format */
 171   struct stream_header sample_format;
 172
 173   /** @brief Sox syntax generation */
 174   long sox_generation;
 175
 176   /** @brief Speaker backend
 177    *
 178    * Choices are @ref BACKEND_ALSA, @ref BACKEND_COMMAND or @ref
 179    * BACKEND_NETWORK.
 180    */
 181   int speaker_backend;
 182 #define BACKEND_ALSA 0                  /**< Use ALSA (Linux only) */
 183 #define BACKEND_COMMAND 1               /**< Execute a command */
 184 #define BACKEND_NETWORK 2               /**< Transmit RTP  */
 185 #define BACKEND_COREAUDIO 3             /**< Use Core Audio (Mac only) */
 186 #define BACKEND_OSS 4                   /**< Use OSS */
 187
 188   /** @brief Home directory for state files */
 189   const char *home;
 190
 191   /** @brief Login username */
 192   const char *username;
 193
 194   /** @brief Login password */
 195   const char *password;
 196
 197   /** @brief Address to connect to */
 198   struct stringlist connect;
 199
 200   /** @brief Directories to search for web templates */
 201   struct stringlist templates;
 202
 203   /** @brief Canonical URL of web interface */
 204   const char *url;
 205
 206   /** @brief Short display limit */
 207   long short_display;
 208
 209   /** @brief Maximum refresh interval for web interface (seconds) */
 210   long refresh;
 211
 212   /** @brief Facilities restricted to trusted users
 213    *
 214    * A bitmap of @ref RESTRICT_SCRATCH, @ref RESTRICT_REMOVE and @ref
 215    * RESTRICT_MOVE.
 216    */
 217   unsigned restrictions;                /* restrictions */
 218 #define RESTRICT_SCRATCH 1              /**< Restrict scratching */
 219 #define RESTRICT_REMOVE 2               /**< Restrict removal */
 220 #define RESTRICT_MOVE 4                 /**< Restrict rearrangement */
 221
 222   /** @brief Target queue length */
 223   long queue_pad;
 224
 225   struct namepartlist namepart;         /* transformations */
 226
 227   /** @brief Termination signal for subprocesses */
 228   int signal;
 229
 230   /** @brief ALSA output device */
 231   const char *device;
 232   struct transformlist transform;       /* path name transformations */
 233
 234   /** @brief Address to send audio data to */
 235   struct stringlist broadcast;
 236
 237   /** @brief Source address for network audio transmission */
 238   struct stringlist broadcast_from;
 239
 240   /** @brief TTL for multicast packets */
 241   long multicast_ttl;
 242
 243   /* derived values: */
 244   int nparts;                           /* number of distinct name parts */
 245   char **parts;                         /* name part list  */
 246 };
 247
 248 extern struct config *config;
 249 /* the current configuration */
 250
 251 int config_read(int server);
 252 /* re-read config, return 0 on success or non-0 on error.
 253  * Only updates @config@ if the new configuration is valid. */
 254
 255 char *config_get_file(const char *name);
 256 /* get a filename within the home directory */
 257
 258 struct passwd;
 259
 260 char *config_userconf(const char *home, const struct passwd *pw);
 261 /* get the user's own private conffile, assuming their home dir is
 262  * @home@ if not null and using @pw@ otherwise */
 263
 264 char *config_usersysconf(const struct passwd *pw );
 265 /* get the user's conffile in /etc */
 266
 267 char *config_private(void);
 268 /* get the private config file */
 269
 270 extern char *configfile;
 271
 272 #endif /* CONFIGURATION_H */
 273
 274 /*
 275 Local Variables:
 276 c-basic-offset:2
 277 comment-column:40
 278 End:
 279 */