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 getNumberValue(int* numberVal, const void* numberKey)
   9 {
  10         assert(numberVal != NULL);
  11         assert(numberKey != NULL);
  12
  13         Boolean result;
  14         CFDictionaryRef dictRef;
  15         CFNumberRef numberRef;
  16
  17
  18         dictRef = SCDynamicStoreCopyProxies((SCDynamicStoreRef)NULL);
  19         result = (dictRef != NULL);
  20         if(result) {
  21                 numberRef = (CFNumberRef)CFDictionaryGetValue(dictRef, numberKey);
  22                 result = (numberRef != NULL &&
  23                           CFGetTypeID(numberRef) == CFNumberGetTypeID());
  24         }
  25         if(result) {
  26                 result = CFNumberGetValue(numberRef, kCFNumberIntType, numberVal);
  27         }
  28
  29
  30         if(dictRef != NULL) {
  31                 CFRelease(dictRef);
  32         }
  33         if(!result) {
  34                 *numberVal = 0;
  35         }
  36         return result;
  37 }
  38
  39 Boolean
  40 getStringValue(char* strVal, size_t strSize, const void* strKey)
  41 {
  42         assert(strVal != NULL);
  43         assert(strKey != NULL);
  44
  45         Boolean result;
  46         CFDictionaryRef dictRef;
  47         CFStringRef strRef;
  48
  49
  50         dictRef = SCDynamicStoreCopyProxies((SCDynamicStoreRef)NULL);
  51         result = (dictRef != NULL);
  52
  53         if(result) {
  54                 strRef = (CFStringRef)CFDictionaryGetValue(dictRef, strKey);
  55                 result = (strRef != NULL) &&
  56                      (CFGetTypeID(strRef) == CFStringGetTypeID());
  57         }
  58         if(result) {
  59                 result = CFStringGetCString(strRef, strVal, (CFIndex)strSize,
  60                                         kCFStringEncodingASCII);
  61         }
  62
  63
  64         if(dictRef != NULL) {
  65                 CFRelease(dictRef);
  66         }
  67         if(!result) {
  68                 *strVal = 0;
  69         }
  70         return result;
  71 }
  72
  73 CFStringRef
  74 createCFString(const char* str)
  75 {
  76         return CFStringCreateWithCStringNoCopy(NULL, str,
  77                                                kCFStringEncodingASCII,
  78                                                kCFAllocatorNull);
  79 }
  80
  81 void
  82 usage(const char* program)
  83 {
  84         fprintf(stderr, "Usage: %s (-n NumberKey) | (-s StringKey)\n", program);
  85         fprintf(stderr, "Look in %s for keys. Eg, HTTPProxy\n\n", KEYFILE);
  86 }
  87
  88 int
  89 main(int argc, char** argv)
  90 {
  91         if(argc != 3) {
  92                 usage(argv[0]);
  93                 return 1;
  94         }
  95
  96         CFStringRef keyRef = createCFString(argv[2]);
  97         if(keyRef == NULL) {
  98                 fprintf(stderr, "Fatal error: Couldn't create CFStringRef from arg2\n");
  99                 return 1;
 100         }
 101
 102         Boolean result;
 103         if(strcmp("-n", argv[1]) == 0) {
 104                 int var = 0;
 105                 result = getNumberValue(&var, keyRef);
 106                 if(result) {
 107                         printf("%d\n", var);
 108                 }
 109         } else if(strcmp("-s", argv[1]) == 0) {
 110                 char str[1024];
 111                 result = getStringValue(str, 1024, keyRef);
 112                 if(result) {
 113                         printf("%s\n", str);
 114                 }
 115         }
 116         else {
 117                 usage(argv[0]);
 118                 return 1;
 119         }
 120
 121         return 0;
 122 }
 123