婚庆类的模板网站,seo整站优化技术培训,杭州网站建设求职简历,怎么做网站例如京东以下源实现为遍历MAC苹果电脑系统上配置的所有IP路由表配置#xff0c;回调 predicate 过滤函数只在 AF_INET(IPV4)的时候跳出#xff0c;其它时不处理#xff0c;人们可以根据自己的需求改动。 无需依赖MAC OS框架库提供的函数#xff0c;最小依赖才有可能更容易移植代码到… 以下源实现为遍历MAC苹果电脑系统上配置的所有IP路由表配置回调 predicate 过滤函数只在 AF_INET(IPV4)的时候跳出其它时不处理人们可以根据自己的需求改动。 无需依赖MAC OS框架库提供的函数最小依赖才有可能更容易移植代码到 Apple Inc. 其它操作系统平台上面另外是 MAC OS 平台依赖不容易受高版本限制。 static int FetchAllRouteNtreeStuff(const ppp::functionbool(int interface_index, uint32_t ip, uint32_t gw, uint32_t mask) predicate) noexcept /* sysctlbyname(net.route.0.0.dump, buf, len, NULL, 0) */{if (NULL predicate){return -1;}int mib[] { CTL_NET, PF_ROUTE, 0, AF_INET, NET_RT_FLAGS, RTF_GATEWAY };size_t needed 0;if (sysctl(mib, arraysizeof(mib), NULL, needed, NULL, 0) 0){return -1;}std::shared_ptrByte buffer_managed ppp::make_shared_allocByte(needed);if (NULL buffer_managed){return -1;}char* buffer (char*)buffer_managed.get();if (sysctl(mib, arraysizeof(mib), buffer, needed, NULL, 0) 0){return -1;}struct rt_msghdr* rtm NULL;char* buffer_needed buffer needed;for (char* i buffer; i buffer_needed; i rtm-rtm_msglen){rtm (struct rt_msghdr*)(i); /* RTAX_NETMASK */if (rtm-rtm_type ! RTM_GET){continue;}/* inet_ntop(AF_INET, sa-sin_addr.s_addr, line, sizeof(line) - 1); */if (!(rtm-rtm_flags RTF_UP)){continue;}/* MAXHOSTNAMELEN; */if (!(rtm-rtm_flags RTF_GATEWAY)){continue;}struct sockaddr* sa_tab[RTAX_MAX];if (struct sockaddr* sa (struct sockaddr*)(rtm 1); NULL ! sa){for (int j 0; j RTAX_MAX; j){if (rtm-rtm_addrs (1 j)){sa_tab[j] sa;sa (struct sockaddr*)((char*)sa ROUNDUP(sa-sa_len));}else{sa_tab[j] NULL;}}}uint32_t ip IPEndPoint::AnyAddress;uint32_t gw IPEndPoint::AnyAddress;uint32_t mask IPEndPoint::AnyAddress;if (rtm-rtm_addrs (1 RTAX_DST)){struct sockaddr_in* sa (struct sockaddr_in*)(sa_tab[RTAX_DST]);if (sa-sin_family ! AF_INET){continue;}ip sa-sin_addr.s_addr;}if (rtm-rtm_addrs (1 RTAX_GATEWAY)){struct sockaddr_in* sa (struct sockaddr_in*)(sa_tab[RTAX_GATEWAY]);if (sa-sin_family ! AF_INET){continue;}gw sa-sin_addr.s_addr;}if (rtm-rtm_addrs (1 RTAX_NETMASK)){struct sockaddr_in* sa (struct sockaddr_in*)(sa_tab[RTAX_NETMASK]);mask sa-sin_addr.s_addr;}if (predicate(rtm-rtm_index, ip, gw, mask)){break;}}return 0;}
