通过C语言接口在Mac App内部对系统的DNS配置进行修改。

Mac OS X设置DNS代码

示例代码setDNS.c内容如下：

#include <SystemConfiguration/SystemConfiguration.h> static bool setDNS(CFStringRef *resolvers, CFIndex resolvers_count) { SCDynamicStoreRef ds = SCDynamicStoreCreate(NULL, CFSTR("setDNS"), NULL, NULL); CFArrayRef array = CFArrayCreate(NULL, (const void **) resolvers, resolvers_count, &kCFTypeArrayCallBacks); CFDictionaryRef dict = CFDictionaryCreate(NULL, (const void **) (CFStringRef []) { CFSTR("ServerAddresses") }, (const void **) &array, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); CFArrayRef list = SCDynamicStoreCopyKeyList(ds, CFSTR("State:/Network/(Service/.+|Global)/DNS")); CFIndex i = 0, j = CFArrayGetCount(list); if (j <= 0) { return FALSE; } bool ret = TRUE; while (i < j) { ret &= SCDynamicStoreSetValue(ds, CFArrayGetValueAtIndex(list, i), dict); i++; } return ret; } int main(int argc, const char * argv[]) { CFStringRef resolvers[] = { CFSTR("8.8.8.8"), CFSTR("114.114.114.114") }; setDNS(resolvers, (CFIndex) (sizeof resolvers / sizeof resolvers[0])); return 0; }

对应的Makefile文件内容：

#!/usr/bin/make -f default: setDNS.c cc -o setDNS setDNS.c -framework Foundation -framework SystemConfiguration clean: rm setDNS

谢谢各位，欢迎交流并指正。

---- 大茶园丁@戴维营教育

https://github.com/DiveinEdu-CN