SpringBoardAccess.c

   1 /*
   2  * Copyright (C) 2009 by Matthias Ringwald
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the copyright holders nor the names of
  14  *    contributors may be used to endorse or promote products derived
  15  *    from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
  18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
  21  * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  24  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  27  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  */
  31
  32 /*
  33  *  SpringBoardAcess.c
  34  *
  35  *  Created by Matthias Ringwald on 9/20/09.
  36  *
  37  */
  38
  39 #include "SpringBoardAccess.h"
  40
  41 #import <CoreFoundation/CoreFoundation.h>
  42
  43 static CFMessagePortRef springBoardAccessMessagePort = 0;
  44
  45
  46 static void SBA_refresh(){
  47         // still valid
  48         if (springBoardAccessMessagePort && !CFMessagePortIsValid(springBoardAccessMessagePort)){
  49                 CFRelease(springBoardAccessMessagePort);
  50                 springBoardAccessMessagePort = NULL;
  51         }
  52         // create new one
  53         if (!springBoardAccessMessagePort) {
  54                 springBoardAccessMessagePort = CFMessagePortCreateRemote(NULL, CFSTR(SBA_MessagePortName));
  55         }
  56 }
  57
  58 int SBA_available(){
  59         SBA_refresh();
  60         if (springBoardAccessMessagePort) return 1;
  61         return 0;
  62 }
  63
  64 static int SBA_sendMessage(UInt8 cmd, UInt16 dataLen, UInt8 *data, CFDataRef *resultData){
  65
  66         SBA_refresh();
  67
  68         // well, won't work
  69         if (!springBoardAccessMessagePort) {
  70                 return kCFMessagePortIsInvalid;
  71         }
  72         // create and send message
  73         CFDataRef cfData = CFDataCreate(NULL, data, dataLen);
  74         CFStringRef replyMode = NULL;
  75         if (resultData) {
  76                 replyMode = kCFRunLoopDefaultMode;
  77         }
  78         int result = CFMessagePortSendRequest(springBoardAccessMessagePort, cmd, cfData, 1, 1, replyMode, resultData);
  79         CFRelease(cfData);
  80         return result;
  81 }
  82
  83 int SBA_addStatusBarImage(char *name){
  84         return SBA_sendMessage(SBAC_addStatusBarImage, strlen(name), (UInt8*) name, NULL);
  85 }
  86
  87 int SBA_removeStatusBarImage(char *name){
  88         return SBA_sendMessage(SBAC_removeStatusBarImage, strlen(name), (UInt8*) name, NULL);
  89 }
  90
  91 int SBA_getBluetoothEnabled() {
  92         CFDataRef cfData;
  93         int result = SBA_sendMessage(SBAC_getBluetoothEnabled, 0, NULL, &cfData);
  94         if (result == 0){
  95                 const uint8_t *data = CFDataGetBytePtr(cfData);
  96                 UInt16 dataLen = CFDataGetLength(cfData);
  97                 if (!dataLen) return -10;
  98                 if (data[0]) {
  99                         result = 1;
 100                 } else {
 101                         result = 0;
 102                 }
 103                 CFRelease(cfData);
 104         } else {
 105                 // error talking to SpringBoardAccess
 106                 // well, assume it's off and hope for the best
 107                 result = 0;
 108         }
 109         return result;
 110 }
 111
 112 int SBA_setBluetoothEnabled(int on){
 113         uint8_t enabled = 0;
 114         if (on) enabled = 1;
 115         return SBA_sendMessage(SBAC_setBluetoothEnabled, 1, (UInt8*) &enabled, NULL);
 116 }
 117
 118