code.delx.au - osx-proxyconf/blob - sysconfig.c

   1 #include <CoreFoundation/CoreFoundation.h>
   2 #include <SystemConfiguration/SCDynamicStoreCopySpecific.h>
   3
   4 const char* KEYFILE = "/System/Library/Frameworks/SystemConfiguration.framework/Headers/SCSchemaDefinitions.h";
   5
   6
   7 Boolean
   8 getDictValue(CFTypeRef* value, CFStringRef key)
   9 {
  10         assert(value != NULL);
  11         assert(key != NULL);
  12
  13         Boolean result;
  14         CFDictionaryRef dictRef;
  15         dictRef = SCDynamicStoreCopyProxies((SCDynamicStoreRef)NULL);
  16         result = (dictRef != NULL);
  17         if(result) {
  18                 *value = (CFNumberRef)CFDictionaryGetValue(dictRef, key);
  19         }
  20         if(*value != NULL) {
  21                 CFRetain(*value);
  22         }
  23
  24         if(dictRef != NULL) {
  25                 CFRelease(dictRef);
  26         }
  27         if(!result) {
  28                 *value = NULL;
  29         }
  30         return result;
  31 }
  32
  33 Boolean
  34 printNumber(CFNumberRef numberRef)
  35 {
  36         assert(numberRef != NULL);
  37
  38         int numberVal = 0;
  39         if(CFNumberGetValue(numberRef, kCFNumberIntType, &numberVal)) {
  40                 printf("%d\n", numberVal);
  41                 return TRUE;
  42         }
  43         return FALSE;
  44 }
  45
  46 Boolean
  47 printString(CFStringRef strRef)
  48 {
  49         assert(strRef != NULL);
  50
  51         char strVal[1024];
  52         if(CFStringGetCString(strRef, strVal, (CFIndex)1024,
  53                               kCFStringEncodingASCII))
  54         {
  55                 printf("%s\n", strVal);
  56                 return TRUE;
  57         }
  58         return FALSE;
  59 }
  60
  61 CFStringRef
  62 createCFString(const char* str)
  63 {
  64         return CFStringCreateWithCStringNoCopy(NULL, str,
  65                                                kCFStringEncodingASCII,
  66                                                kCFAllocatorNull);
  67 }
  68
  69 void
  70 usage(const char* program)
  71 {
  72         fprintf(stderr, "Usage: %s [-q] key\n", program);
  73         fprintf(stderr, "Look in %s for keys. Eg, HTTPProxy\n\n", KEYFILE);
  74 }
  75
  76 int
  77 main(int argc, char** argv)
  78 {
  79         int quiet = 0;
  80         const char* key;
  81         if(argc == 2) {
  82                 key = argv[1];
  83         } else if(argc == 3 && strcmp("-q", argv[1]) == 0) {
  84                 quiet = 1;
  85                 key = argv[2];
  86         } else {
  87                 usage(argv[0]);
  88                 return 1;
  89         }
  90
  91
  92         CFStringRef keyRef = createCFString(argv[1]);
  93         if(keyRef == NULL) {
  94                 fprintf(stderr, "Fatal error: Couldn't create CFStringRef from arg2\n");
  95                 return 1;
  96         }
  97
  98         CFTypeRef valueRef = NULL;
  99         if(!getDictValue(&valueRef, keyRef)) {
 100                 fprintf(stderr, "Fatal error: Error accessing dictionary\n");
 101                 return 1;
 102         }
 103
 104         if(valueRef == NULL) {
 105                 if(!quiet) {
 106                         fprintf(stderr, "No value for that key\n");
 107                 }
 108                 return 0;
 109         }
 110         else if(CFStringGetTypeID() == CFGetTypeID(valueRef)) {
 111                 printString((CFStringRef)valueRef);
 112         }
 113         else if(CFNumberGetTypeID() == CFGetTypeID(valueRef)) {
 114                 printNumber((CFNumberRef)valueRef);
 115         }
 116         else {
 117                 fprintf(stderr, "Fatal error: Unsupported value type in dictionary\n");
 118                 CFRelease(valueRef);
 119                 return 1;
 120         }
 121
 122         CFRelease(valueRef);
 123         return 0;
 124 }
 125