Security/libsecurity_transform/lib/Source.cpp

   1 #include "Source.h"
   2 #include "Utilities.h"
   3 #include "c++utils.h"
   4
   5 #include <string>
   6
   7 using namespace std;
   8
   9 Source::Source(CFStringRef sourceObjectName, Transform* destination, CFStringRef destinationName) :
  10         CoreFoundationObject(sourceObjectName),
  11         mDestination(destination),
  12         mDestinationName(destinationName)
  13 {
  14     CFStringRef queueName = CFStringCreateWithFormat(NULL, NULL, CFSTR("source:%@"), sourceObjectName);
  15     char *queueName_cstr = utf8(queueName);
  16
  17         mLastValue = NULL;
  18         mDispatchQueue = MyDispatchQueueCreate(queueName_cstr, NULL);
  19     free((void*)queueName_cstr);
  20     CFRelease(queueName);
  21 }
  22
  23
  24
  25 Source::~Source()
  26 {
  27         if (mLastValue != NULL)
  28         {
  29                 CFRelease(mLastValue);
  30         }
  31
  32         dispatch_release(mDispatchQueue);
  33 }
  34
  35
  36
  37 void Source::Activate()
  38 {
  39         dispatch_async(mDispatchQueue, ^{DoActivate();});
  40 }
  41
  42
  43
  44 void Source::SetValue(CFTypeRef value)
  45 {
  46         if (value == mLastValue)
  47         {
  48                 return;
  49         }
  50
  51         if (mLastValue != NULL) // is there an existing value?  If so, release it
  52         {
  53                 CFRelease(mLastValue);
  54         }
  55
  56         if (value != NULL)
  57         {
  58                 mLastValue = CFRetain(value);
  59         }
  60         else
  61         {
  62                 mLastValue = NULL;
  63         }
  64 }
  65
  66
  67
  68 Boolean Source::Equal(const CoreFoundationObject* obj)
  69 {
  70         if (CoreFoundationObject::Equal(obj))
  71         {
  72                 const Source* objSource = (const Source*) obj;
  73                 if (objSource->mDestination == mDestination &&
  74                         CFStringCompare(objSource->mDestinationName, mDestinationName, 0) == kCFCompareEqualTo)
  75                 {
  76                         return true;
  77                 }
  78         }
  79
  80         return false;
  81 }
  82
  83
  84
  85 std::string Source::DebugDescription()
  86 {
  87         string result = CoreFoundationObject::DebugDescription() + ": Source ";
  88
  89         char buffer[256];
  90         sprintf(buffer, "(Destination = %p, name = %s)", mDestination, StringFromCFString(mDestinationName).c_str());
  91
  92         result += buffer;
  93
  94         return result;
  95 }
  96