src/apple_sensors.c

   1 /**
   2  * collectd - src/apple_sensors.c
   3  * Copyright (C) 2006,2007  Florian octo Forster
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *   Florian octo Forster <octo at collectd.org>
  25  **/
  26
  27 #include "collectd.h"
  28
  29 #include "common.h"
  30 #include "plugin.h"
  31
  32 #if HAVE_CTYPE_H
  33 #  include <ctype.h>
  34 #endif
  35
  36 #if HAVE_MACH_MACH_TYPES_H
  37 #  include <mach/mach_types.h>
  38 #endif
  39 #if HAVE_MACH_MACH_INIT_H
  40 #  include <mach/mach_init.h>
  41 #endif
  42 #if HAVE_MACH_MACH_ERROR_H
  43 #  include <mach/mach_error.h>
  44 #endif
  45 #if HAVE_MACH_MACH_PORT_H
  46 #  include <mach/mach_port.h>
  47 #endif
  48 #if HAVE_COREFOUNDATION_COREFOUNDATION_H
  49 #  include <CoreFoundation/CoreFoundation.h>
  50 #endif
  51 #if HAVE_IOKIT_IOKITLIB_H
  52 #  include <IOKit/IOKitLib.h>
  53 #endif
  54 #if HAVE_IOKIT_IOTYPES_H
  55 #  include <IOKit/IOTypes.h>
  56 #endif
  57
  58 static mach_port_t io_master_port = MACH_PORT_NULL;
  59
  60 static int as_init (void)
  61 {
  62         kern_return_t status;
  63
  64         if (io_master_port != MACH_PORT_NULL)
  65         {
  66                 mach_port_deallocate (mach_task_self (),
  67                                 io_master_port);
  68                 io_master_port = MACH_PORT_NULL;
  69         }
  70
  71         status = IOMasterPort (MACH_PORT_NULL, &io_master_port);
  72         if (status != kIOReturnSuccess)
  73         {
  74                 ERROR ("IOMasterPort failed: %s",
  75                                 mach_error_string (status));
  76                 io_master_port = MACH_PORT_NULL;
  77                 return (-1);
  78         }
  79
  80         return (0);
  81 }
  82
  83 static void as_submit (const char *type, const char *type_instance,
  84                 double val)
  85 {
  86         value_list_t vl = VALUE_LIST_INIT;
  87
  88         vl.values = &(value_t) { .gauge = val };
  89         vl.values_len = 1;
  90         sstrncpy (vl.plugin, "apple_sensors", sizeof (vl.plugin));
  91         sstrncpy (vl.type, type, sizeof (vl.type));
  92         sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
  93
  94         plugin_dispatch_values (&vl);
  95 }
  96
  97 static int as_read (void)
  98 {
  99         kern_return_t   status;
 100         io_iterator_t   iterator;
 101         io_object_t     io_obj;
 102         CFMutableDictionaryRef prop_dict;
 103         CFTypeRef       property;
 104
 105         char   type[128];
 106         char   inst[128];
 107         int    value_int;
 108         double value_double;
 109         if (!io_master_port || (io_master_port == MACH_PORT_NULL))
 110                 return (-1);
 111
 112         status = IOServiceGetMatchingServices (io_master_port,
 113                         IOServiceNameMatching("IOHWSensor"),
 114                         &iterator);
 115         if (status != kIOReturnSuccess)
 116         {
 117                 ERROR ("IOServiceGetMatchingServices failed: %s",
 118                                 mach_error_string (status));
 119                 return (-1);
 120         }
 121
 122         while ((io_obj = IOIteratorNext (iterator)))
 123         {
 124                 prop_dict = NULL;
 125                 status = IORegistryEntryCreateCFProperties (io_obj,
 126                                 &prop_dict,
 127                                 kCFAllocatorDefault,
 128                                 kNilOptions);
 129                 if (status != kIOReturnSuccess)
 130                 {
 131                         DEBUG ("IORegistryEntryCreateCFProperties failed: %s",
 132                                         mach_error_string (status));
 133                         continue;
 134                 }
 135
 136                 /* Copy the sensor type. */
 137                 property = NULL;
 138                 if (!CFDictionaryGetValueIfPresent (prop_dict,
 139                                         CFSTR ("type"),
 140                                         &property))
 141                         continue;
 142                 if (CFGetTypeID (property) != CFStringGetTypeID ())
 143                         continue;
 144                 if (!CFStringGetCString (property,
 145                                         type, sizeof (type),
 146                                         kCFStringEncodingASCII))
 147                         continue;
 148                 type[sizeof (type) - 1] = '\0';
 149
 150                 /* Copy the sensor location. This will be used as `instance'. */
 151                 property = NULL;
 152                 if (!CFDictionaryGetValueIfPresent (prop_dict,
 153                                         CFSTR ("location"),
 154                                         &property))
 155                         continue;
 156                 if (CFGetTypeID (property) != CFStringGetTypeID ())
 157                         continue;
 158                 if (!CFStringGetCString (property,
 159                                         inst, sizeof (inst),
 160                                         kCFStringEncodingASCII))
 161                         continue;
 162                 inst[sizeof (inst) - 1] = '\0';
 163                 for (int i = 0; i < 128; i++)
 164                 {
 165                         if (inst[i] == '\0')
 166                                 break;
 167                         else if (isalnum (inst[i]))
 168                                 inst[i] = (char) tolower (inst[i]);
 169                         else
 170                                 inst[i] = '_';
 171                 }
 172
 173                 /* Get the actual value. Some computation, based on the `type'
 174                  * is neccessary. */
 175                 property = NULL;
 176                 if (!CFDictionaryGetValueIfPresent (prop_dict,
 177                                         CFSTR ("current-value"),
 178                                         &property))
 179                         continue;
 180                 if (CFGetTypeID (property) != CFNumberGetTypeID ())
 181                         continue;
 182                 if (!CFNumberGetValue (property,
 183                                         kCFNumberIntType,
 184                                         &value_int))
 185                         continue;
 186
 187                 /* Found e.g. in the 1.5GHz PowerBooks */
 188                 if (strcmp (type, "temperature") == 0)
 189                 {
 190                         value_double = ((double) value_int) / 65536.0;
 191                         sstrncpy (type, "temperature", sizeof (type));
 192                 }
 193                 else if (strcmp (type, "temp") == 0)
 194                 {
 195                         value_double = ((double) value_int) / 10.0;
 196                         sstrncpy (type, "temperature", sizeof (type));
 197                 }
 198                 else if (strcmp (type, "fanspeed") == 0)
 199                 {
 200                         value_double = ((double) value_int) / 65536.0;
 201                         sstrncpy (type, "fanspeed", sizeof (type));
 202                 }
 203                 else if (strcmp (type, "voltage") == 0)
 204                 {
 205                         /* Leave this to the battery plugin. */
 206                         continue;
 207                 }
 208                 else if (strcmp (type, "adc") == 0)
 209                 {
 210                         value_double = ((double) value_int) / 10.0;
 211                         sstrncpy (type, "fanspeed", sizeof (type));
 212                 }
 213                 else
 214                 {
 215                         DEBUG ("apple_sensors: Read unknown sensor type: %s",
 216                                         type);
 217                         value_double = (double) value_int;
 218                 }
 219
 220                 as_submit (type, inst, value_double);
 221
 222                 CFRelease (prop_dict);
 223                 IOObjectRelease (io_obj);
 224         } /* while (iterator) */
 225
 226         IOObjectRelease (iterator);
 227
 228         return (0);
 229 } /* int as_read */
 230
 231 void module_register (void)
 232 {
 233         plugin_register_init ("apple_sensors", as_init);
 234         plugin_register_read ("apple_sensors", as_read);
 235 } /* void module_register */