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 Boolean
   7 printCFTypeRef(CFTypeRef value);
   8
   9
  10 Boolean
  11 getDictValue(CFTypeRef* value, CFStringRef key)
  12 {
  13         assert(value != NULL);
  14         assert(key != NULL);
  15
  16         Boolean result;
  17         CFDictionaryRef dictRef;
  18         dictRef = SCDynamicStoreCopyProxies((SCDynamicStoreRef)NULL);
  19         result = (dictRef != NULL);
  20         if(result) {
  21                 *value = (CFNumberRef)CFDictionaryGetValue(dictRef, key);
  22         }
  23         if(*value != NULL) {
  24                 CFRetain(*value);
  25         }
  26
  27         if(dictRef != NULL) {
  28                 CFRelease(dictRef);
  29         }
  30         if(!result) {
  31                 *value = NULL;
  32         }
  33         return result;
  34 }
  35
  36 Boolean
  37 printNumber(CFNumberRef numberRef)
  38 {
  39         assert(numberRef != NULL);
  40
  41         int numberVal = 0;
  42         if(CFNumberGetValue(numberRef, kCFNumberIntType, &numberVal)) {
  43                 printf("%d\n", numberVal);
  44                 return TRUE;
  45         }
  46         return FALSE;
  47 }
  48
  49 Boolean
  50 printString(CFStringRef strRef)
  51 {
  52         assert(strRef != NULL);
  53
  54         char strVal[1024];
  55         if(CFStringGetCString(strRef, strVal, (CFIndex)1024,
  56                               kCFStringEncodingASCII))
  57         {
  58                 printf("%s\n", strVal);
  59                 return TRUE;
  60         }
  61         return FALSE;
  62 }
  63
  64 Boolean
  65 printArray(CFArrayRef arrayRef)
  66 {
  67         assert(arrayRef != NULL);
  68
  69         int length = CFArrayGetCount(arrayRef);
  70         for(int i = 0; i < length; ++i) {
  71                 if(!printCFTypeRef(CFArrayGetValueAtIndex(arrayRef, i))) {
  72                         return FALSE;
  73                 }
  74         }
  75
  76         return TRUE;
  77 }
  78
  79 Boolean
  80 printCFTypeRef(CFTypeRef value)
  81 {
  82         if(value == NULL) {
  83                 return FALSE;
  84         }
  85         else if(CFStringGetTypeID() == CFGetTypeID(value)) {
  86                 return printString((CFStringRef)value);
  87         }
  88         else if(CFNumberGetTypeID() == CFGetTypeID(value)) {
  89                 return printNumber((CFNumberRef)value);
  90         }
  91         else if(CFArrayGetTypeID()  == CFGetTypeID(value)) {
  92                 return printArray((CFArrayRef)value);
  93         }
  94         else {
  95                 return FALSE;
  96         }
  97 }
  98
  99 CFStringRef
 100 createCFString(const char* str)
 101 {
 102         return CFStringCreateWithCStringNoCopy(NULL, str,
 103                                                kCFStringEncodingASCII,
 104                                                kCFAllocatorNull);
 105 }
 106
 107 void
 108 usage(const char* program)
 109 {
 110         fprintf(stderr, "Usage: %s [-q] key\n", program);
 111         fprintf(stderr, "Look in %s for keys. Eg, HTTPProxy\n\n", KEYFILE);
 112 }
 113
 114 int
 115 main(int argc, char** argv)
 116 {
 117         int quiet = 0;
 118         const char* key;
 119         if(argc == 2) {
 120                 key = argv[1];
 121         } else if(argc == 3 && strcmp("-q", argv[1]) == 0) {
 122                 quiet = 1;
 123                 key = argv[2];
 124         } else {
 125                 usage(argv[0]);
 126                 return 1;
 127         }
 128
 129
 130         CFStringRef keyRef = createCFString(key);
 131         if(keyRef == NULL) {
 132                 fprintf(stderr, "Fatal error: Couldn't create CFStringRef from arg2\n");
 133                 return 1;
 134         }
 135
 136         CFTypeRef valueRef = NULL;
 137         if(!getDictValue(&valueRef, keyRef)) {
 138                 fprintf(stderr, "Fatal error: Error accessing dictionary\n");
 139                 return 1;
 140         }
 141
 142         if(valueRef == NULL) {
 143                 if(!quiet) {
 144                         fprintf(stderr, "No value for that key\n");
 145                 }
 146                 return 0;
 147         }
 148         if(!printCFTypeRef(valueRef)) {
 149                 fprintf(stderr, "Fatal error: Unsupported value type in dictionary\n");
 150                 CFRelease(valueRef);
 151                 return 1;
 152         }
 153
 154         CFRelease(valueRef);
 155         return 0;
 156 }
 157