第 71 章 网卡接口与本机信息

#include <stdio.h>

#include <xrt.h>


















 */


/* 列出本机接口以及可用于绑定、Scope 和多播的地址元数据。 */
int main(void)
{
	xnetinterfacelist List;
	size_t i;

	if ( !xrtNetInterfaces(&List) ) {
		return 1;
	}
	for ( i = 0; i < List.Count; i++ ) {
		const xnetinterface* pInterface = &List.Items[i];
		size_t j;

		printf("%.*s (%.*s) index4=%u index6=%u mtu=%u\n",
			(int)pInterface->Name.Size, pInterface->Name.Data,
			(int)pInterface->DisplayName.Size, pInterface->DisplayName.Data,
			(unsigned int)pInterface->IPv4Index,
			(unsigned int)pInterface->IPv6Index,
			(unsigned int)pInterface->Mtu);
		for ( j = 0; j < pInterface->AddressCount; j++ ) {
			const xnetinterfaceaddress* pAddress = &pInterface->Addresses[j];
			char sAddress[96];

			if ( xrtNetAddrText(
				&pAddress->Address, sAddress, sizeof(sAddress)
			) == XRT_NPOS ) {
				xrtNetInterfacesFree(&List);
				return 1;
			}
			printf("  %s/%u\n", sAddress,
				(unsigned int)pAddress->PrefixLength);
		}
	}
	xrtNetInterfacesFree(&List);
	return 0;
}

 */

#include <stdio.h>
#include <string.h>
#include <xrt.h>

int main(void)
{
	char sName[64];
	char sText[64];
	uint8 Hardware[16];
	xnetaddr Address;
	uint32 iIndex;
	size_t iSize = 0;
	size_t iNeed = 0;
	int iResult = 1;

	/* ---- InterfaceIndex / InterfaceName：回环往返 ---- */
		#if defined(_WIN32) || defined(_WIN64)
    iIndex = xrtNetInterfaceIndex("loopback4", XNET_FAMILY_IPV4);
#elif defined(__APPLE__)
    iIndex = xrtNetInterfaceIndex("lo0", XNET_FAMILY_IPV4);
#else
    iIndex = xrtNetInterfaceIndex("lo", XNET_FAMILY_IPV4);
#endif
	if ( iIndex == 0u ) {
		/* Windows 命名不同：回环显示名 "Loopback Pseudo-Interface 1"。 */
		iIndex = xrtNetInterfaceIndex(
			"Loopback Pseudo-Interface 1", XNET_FAMILY_IPV4);
	}
	if ( iIndex == 0u ) {
		goto Cleanup;  /* 找不到回环：环境异常 */
	}
	/* InterfaceName 两段式：查询 → 写入 → 回环索引反查一致。 */
	iNeed = xrtNetInterfaceName(iIndex, XNET_FAMILY_IPV4, NULL,
		0u);
	if ( (iNeed == 0u) || (iNeed >= sizeof(sName)) ) {
		goto Cleanup;
	}
	iSize = xrtNetInterfaceName(iIndex, XNET_FAMILY_IPV4, sName,
		sizeof(sName));
	if ( (iSize == 0u) || (iSize != iNeed) ) {
		goto Cleanup;
	}
	/* 名字反查索引一致（roundtrip）。 */
	if ( xrtNetInterfaceIndex(sName, XNET_FAMILY_IPV4) !=
		iIndex ) {
		/* 显示名与规范名可能不同：跳过反查但记录。 */
		printf("iface: (display-name index differs) ");
	}
	printf("iface: loopback index!=0 name=[%s] ok\n", sName);

	/* ---- LocalAddress / Text ---- */
	if ( !xrtNetLocalAddress(&Address, XNET_FAMILY_IPV4) ||
		(Address.Family != XNET_FAMILY_IPV4) ||
		(Address.Port != 0u) ) {
		goto Cleanup;
	}
	iNeed = xrtNetLocalAddressText(XNET_FAMILY_IPV4, NULL, 0u);
	if ( (iNeed == 0u) || (iNeed >= sizeof(sText)) ) {
		goto Cleanup;
	}
	iSize = xrtNetLocalAddressText(XNET_FAMILY_IPV4, sText,
		sizeof(sText));
	if ( (iSize == 0u) || (iSize != iNeed) ||
		(strchr(sText, '.') == NULL) ) {
		goto Cleanup;  /* IPv4 文本必含点 */
	}
	printf("iface: local addr=[%s]", sText);

	/* ---- LocalHardware / Text：MAC 至少 6 字节。 ---- */
	iNeed = xrtNetLocalHardware(NULL, 0u);
	if ( (iNeed < 6u) || (iNeed > sizeof(Hardware)) ) {
		goto Cleanup;
	}
	iSize = xrtNetLocalHardware(Hardware, sizeof(Hardware));
	if ( iSize != iNeed ) {
		goto Cleanup;
	}
	iNeed = xrtNetLocalHardwareText(NULL, 0u);
	if ( (iNeed < 12u) || (iNeed >= sizeof(sText)) ) {
		goto Cleanup;  /* 6 字节 → 12 个 HEX 字符 */
	}
	iSize = xrtNetLocalHardwareText(sText, sizeof(sText));
	if ( (iSize != iNeed) ) {
		goto Cleanup;
	}
	printf(" hw=%s", sText);

	/* ---- HostName：非空且可写入。 ---- */
	iNeed = xrtNetHostName(NULL, 0u);
	if ( (iNeed == 0u) || (iNeed >= sizeof(sName)) ) {
		goto Cleanup;
	}
	iSize = xrtNetHostName(sName, sizeof(sName));
	if ( (iSize == 0u) || (iSize != iNeed) ) {
		goto Cleanup;
	}
	printf(" host=[%s] ok\n", sName);
	iResult = 0;

Cleanup:
	return iResult;
}

#include <stdio.h>

#include <xrt.h>
















 */


/* 一次读取适合启动日志和诊断页展示的本机网络信息。 */
int main(void)
{
	str sAddress = xrtNetLocalAddressString(XNET_FAMILY_UNSPEC);
	str sHost = xrtNetHostNameString();
	str sHardware = xrtNetLocalHardwareString();

	if ( (sAddress == NULL) || (sHost == NULL) ) {
		xrtFree(sAddress);
		xrtFree(sHost);
		xrtFree(sHardware);
		return 1;
	}
	printf("host = %s\n", sHost);
	printf("address = %s\n", sAddress);
	printf("hardware = %s\n", sHardware != NULL ? sHardware : "unavailable");
	xrtFree(sHardware);
	xrtFree(sHost);
	xrtFree(sAddress);
	return 0;
}