mdw@git.distorted.org.uk Git - disorder/blob - server/lookup.c

   1 /*
   2  * This file is part of DisOrder.
   3  * Copyright (C) 2004-2008 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 server/macros-disorder.c
  21  * @brief DisOrder-specific expansions
  22  */
  23
  24 #include <config.h>
  25 #include "types.h"
  26
  27 #include <stdio.h>
  28 #include <string.h>
  29
  30 #include "queue.h"
  31 #include "sink.h"
  32 #include "client.h"
  33 #include "rights.h"
  34 #include "lookup.h"
  35 #include "cgi.h"
  36
  37 /** @brief Client used by CGI
  38  *
  39  * The caller should arrange for this to be created before any of
  40  * these expansions are used (if it cannot connect then it's safe to
  41  * leave it as NULL).
  42  */
  43 disorder_client *client;
  44
  45 /** @brief Cached data */
  46 static unsigned flags;
  47
  48 struct queue_entry *queue;
  49 struct queue_entry *playing;
  50 struct queue_entry *recent;
  51
  52 int volume_left;
  53 int volume_right;
  54
  55 char **files;
  56 int nfiles;
  57
  58 char **dirs;
  59 int ndirs;
  60
  61 char **new;
  62 int nnew;
  63
  64 rights_type rights;
  65
  66 int enabled;
  67 int random_enabled;
  68
  69 /** @brief Fetch cachable data */
  70 void lookup(unsigned want) {
  71   unsigned need = want ^ (flags & want);
  72   struct queue_entry *r, *rnext;
  73   const char *dir, *re;
  74   char *rights_string;
  75
  76   if(!client || !need)
  77     return;
  78   if(need & DC_QUEUE)
  79     disorder_queue(client, &queue);
  80   if(need & DC_PLAYING)
  81     disorder_playing(client, &playing);
  82   if(need & DC_NEW)
  83     disorder_new_tracks(client, &new, &nnew, 0);
  84   if(need & DC_RECENT) {
  85     /* we need to reverse the order of the list */
  86     disorder_recent(client, &r);
  87     while(r) {
  88       rnext = r->next;
  89       r->next = recent;
  90       recent = r;
  91       r = rnext;
  92     }
  93   }
  94   if(need & DC_VOLUME)
  95     disorder_get_volume(client,
  96                         &volume_left, &volume_right);
  97   /* DC_FILES and DC_DIRS are looking obsolete now */
  98   if(need & (DC_FILES|DC_DIRS)) {
  99     if(!(dir = cgi_get("directory")))
 100       dir = "";
 101     re = cgi_get("regexp");
 102     if(need & DC_DIRS)
 103       if(disorder_directories(client, dir, re,
 104                               &dirs, &ndirs))
 105         ndirs = 0;
 106     if(need & DC_FILES)
 107       if(disorder_files(client, dir, re,
 108                         &files, &nfiles))
 109         nfiles = 0;
 110   }
 111   if(need & DC_RIGHTS) {
 112     rights = RIGHT_READ;        /* fail-safe */
 113     if(!disorder_userinfo(client, disorder_user(client),
 114                           "rights", &rights_string))
 115       parse_rights(rights_string, &rights, 1);
 116   }
 117   if(need & DC_ENABLED)
 118     disorder_enabled(client, &enabled);
 119   if(need & DC_RANDOM_ENABLED)
 120     disorder_random_enabled(client, &random_enabled);
 121   if(need & DC_RANDOM_ENABLED)
 122   flags |= need;
 123 }
 124
 125 void lookup_reset(void) {
 126   /* Junk the old connection if there is one */
 127   if(client)
 128     disorder_close(client);
 129   /* Create a new connection */
 130   client = disorder_new(0);
 131   /* Forget everything we knew */
 132   flags = 0;
 133 }
 134
 135
 136 /*
 137 Local Variables:
 138 c-basic-offset:2
 139 comment-column:40
 140 fill-column:79
 141 indent-tabs-mode:nil
 142 End:
 143 */