windows下无npcap驱动导致golang获取网卡失败问题
window下无npcap驱动导致golang获取网卡失败问题
目录
window下无npcap驱动导致golang获取网卡失败问题
一、起源
二、查看pcap源码
三、查看环境
四、安装Npcap
五、运行demo程序
六、获取网卡的各个源码对比
1、golang自身的net库
2、google的pcap库
3、windows扩展库
一、起源
使用golang语言开发了一个网络安全检测的小工具，其中抓取报文模块使用的是google的gopacket包。
开发完成后编译打包成exe可执行文件，本机可以运行，结果一切正常。安装到另一台window10的时候，结果可以运行但是报错结束了。
经过debug定位发现获取网络接口的协程不能正常工作。
二、查看pcap源码
// github.com\google\gopacket\pcap\pcap.go pcap.FindAllDevs()
// FindAllDevs attempts to enumerate all interfaces on the current machine.
func FindAllDevs() (ifs []Interface, err error) {alldevsp, err := pcapFindAllDevs()if err != nil {return nil, err}defer alldevsp.free()for alldevsp.next() {var iface Interfaceiface.Name = alldevsp.name()iface.Description = alldevsp.description()iface.Addresses = findalladdresses(alldevsp.addresses())iface.Flags = alldevsp.flags()ifs = append(ifs, iface)}return
}
func pcapFindAllDevs() (pcapDevices, error) {var alldevsp pcapDeviceserr := LoadWinPCAP()if err != nil {return alldevsp, err}buf := make([]byte, errorBufferSize)ret, _, _ := syscall.Syscall(pcapFindalldevsPtr, 2, uintptr(unsafe.Pointer(&alldevsp.all)), uintptr(unsafe.Pointer(&buf[0])), 0)if pcapCint(ret) < 0 {return pcapDevices{}, errors.New(byteSliceToString(buf))}return alldevsp, nil
}加载kernel32.dll、wpcap.dll、msvcrt.dll依赖库
// LoadWinPCAP attempts to dynamically load the wpcap DLL and resolve necessary functions
func LoadWinPCAP() error {if pcapLoaded { //默认false，已经加载直接返回nilreturn nil}kernel32, err := syscall.LoadLibrary("kernel32.dll") //调用windows syscall API动态链接kernel32.dllif err != nil {return fmt.Errorf("couldn't load kernel32.dll")}defer syscall.FreeLibrary(kernel32)initDllPath(kernel32) //检查dll path是否存在并initif haveSearch, _ := syscall.GetProcAddress(kernel32, "AddDllDirectory"); haveSearch != 0 {// if AddDllDirectory is present, we can use LOAD_LIBRARY_* stuff with LoadLibraryEx to avoid wpcap.dll hijacking// see: https://msdn.microsoft.com/en-us/library/ff919712%28VS.85%29.aspxconst LOAD_LIBRARY_SEARCH_USER_DIRS = 0x00000400const LOAD_LIBRARY_SEARCH_SYSTEM32 = 0x00000800wpcapHandle, err = windows.LoadLibraryEx("wpcap.dll", 0, LOAD_LIBRARY_SEARCH_USER_DIRS|LOAD_LIBRARY_SEARCH_SYSTEM32)if err != nil {return fmt.Errorf("couldn't load wpcap.dll")}} else {// otherwise fall back to load it with the unsafe search cause by SetDllDirectorywpcapHandle, err = windows.LoadLibrary("wpcap.dll")if err != nil {return fmt.Errorf("couldn't load wpcap.dll")}}initLoadedDllPath(kernel32)msvcrtHandle, err = syscall.LoadLibrary("msvcrt.dll")if err != nil {return fmt.Errorf("couldn't load msvcrt.dll")}callocPtr, err = syscall.GetProcAddress(msvcrtHandle, "calloc")if err != nil {return fmt.Errorf("couldn't get calloc function")}pcapStrerrorPtr = mustLoad("pcap_strerror")pcapStatustostrPtr = mightLoad("pcap_statustostr") // not available on winpcappcapOpenLivePtr = mustLoad("pcap_open_live")pcapOpenOfflinePtr = mustLoad("pcap_open_offline")pcapClosePtr = mustLoad("pcap_close")pcapGeterrPtr = mustLoad("pcap_geterr")pcapStatsPtr = mustLoad("pcap_stats")pcapCompilePtr = mustLoad("pcap_compile")pcapFreecodePtr = mustLoad("pcap_freecode")pcapLookupnetPtr = mustLoad("pcap_lookupnet")pcapOfflineFilterPtr = mustLoad("pcap_offline_filter")pcapSetfilterPtr = mustLoad("pcap_setfilter")pcapListDatalinksPtr = mustLoad("pcap_list_datalinks")pcapFreeDatalinksPtr = mustLoad("pcap_free_datalinks")pcapDatalinkValToNamePtr = mustLoad("pcap_datalink_val_to_name")pcapDatalinkValToDescriptionPtr = mustLoad("pcap_datalink_val_to_description")pcapOpenDeadPtr = mustLoad("pcap_open_dead")pcapNextExPtr = mustLoad("pcap_next_ex")pcapDatalinkPtr = mustLoad("pcap_datalink")pcapSetDatalinkPtr = mustLoad("pcap_set_datalink")pcapDatalinkNameToValPtr = mustLoad("pcap_datalink_name_to_val")pcapLibVersionPtr = mustLoad("pcap_lib_version")pcapFreealldevsPtr = mustLoad("pcap_freealldevs")pcapFindalldevsPtr = mustLoad("pcap_findalldevs")pcapSendpacketPtr = mustLoad("pcap_sendpacket")pcapSetdirectionPtr = mustLoad("pcap_setdirection")pcapSnapshotPtr = mustLoad("pcap_snapshot")//libpcap <1.2 doesn't have pcap_*_tstamp_* functionspcapTstampTypeValToNamePtr = mightLoad("pcap_tstamp_type_val_to_name")pcapTstampTypeNameToValPtr = mightLoad("pcap_tstamp_type_name_to_val")pcapListTstampTypesPtr = mightLoad("pcap_list_tstamp_types")pcapFreeTstampTypesPtr = mightLoad("pcap_free_tstamp_types")pcapSetTstampTypePtr = mightLoad("pcap_set_tstamp_type")pcapGetTstampPrecisionPtr = mightLoad("pcap_get_tstamp_precision")pcapSetTstampPrecisionPtr = mightLoad("pcap_set_tstamp_precision")pcapOpenOfflineWithTstampPrecisionPtr = mightLoad("pcap_open_offline_with_tstamp_precision")pcapHOpenOfflineWithTstampPrecisionPtr = mightLoad("pcap_hopen_offline_with_tstamp_precision")pcapActivatePtr = mustLoad("pcap_activate")pcapCreatePtr = mustLoad("pcap_create")pcapSetSnaplenPtr = mustLoad("pcap_set_snaplen")pcapSetPromiscPtr = mustLoad("pcap_set_promisc")pcapSetTimeoutPtr = mustLoad("pcap_set_timeout")//winpcap does not support rfmonpcapCanSetRfmonPtr = mightLoad("pcap_can_set_rfmon")pcapSetRfmonPtr = mightLoad("pcap_set_rfmon")pcapSetBufferSizePtr = mustLoad("pcap_set_buffer_size")//libpcap <1.5 does not have pcap_set_immediate_modepcapSetImmediateModePtr = mightLoad("pcap_set_immediate_mode")pcapHopenOfflinePtr = mustLoad("pcap_hopen_offline")pcapLoaded = truereturn nil
}
三、查看环境
通过阅读pcap的源码，知道需要有至少kernel32.dll、wpcap.dll、msvcrt.dll依赖库才可以工作。
在window10上搜索这几个dll依赖库，发现kernel32.dll、msvcrt.dll是存在的，而且不同的应用程序也有自己的dll，搜索出来比较多。
但是wpcap.dll没有找到。
接下来考虑安装wpcap.dll，由于开发环境中安装了Wireshark抓包软件，而通过安装预置条件软件Npcap把wpcap.dll安装解压。
了解到windows X下有两种选择，一种是比较推荐的Npcap，另一种是Npcap的前身WinPcap，对于window10也有单独的Win10Pcap。
对应的官网下载链接和使用手册如下
Npcap https://nmap.org/npcap/ https://nmap.org/npcap/guide/
WinPcap https://www.winpcap.org/ https://www.winpcap.org/docs/default.htm
Win10Pcap http://www.win10pcap.org/ http://www.win10pcap.org/howto/
四、安装Npcap
Npcap本身是开源项目，后来由Nmap项目维护，笔者还发现有Npcap的OEM版本，支持更多的特性，比如静默安装等等。
https://nmap.org/npcap/
可以下载最新的安装版本，现在是Npcap 1.50 installer for Windows 7/2008R2, 8/2012, 8.1/2012R2, 10/2016, 2019 (x86 and x64)。几乎支持windowX。
如下是安装Npcap的过程。
安装完成后，我们发现C盘下多了目录C:\Program Files\Npcap，里面有一些批处理脚本和组件的安装包，然后C:\Windows\System32\Npcap目录也是新增的，有dll链接库文件。
五、运行demo程序
现在dll都是存在的，而且安装了NPF（网络数据包过滤器）。代码层面不做任何变动立即执行，发现有结果输出。
demo程序可以正常工作，问题解决。
六、获取网卡的各个源码对比
1、golang自身的net库
package mainimport ("fmt""net""time"
)func main() {ifcs, err := net.Interfaces()if err != nil {fmt.Println(err)return}for k, v := range ifcs {fmt.Printf("%d:%+v\n", k, v)}time.Sleep(time.Hour)
}输出
0:{Index:4 MTU:1500 Name:本地连接* 1 HardwareAddr:5c:c5:d4:xx:xx:xx Flags:broadcast|multicast}
1:{Index:2 MTU:1500 Name:WLAN HardwareAddr:5c:c5:d4:xx:xx:xx Flags:up|broadcast|multicast}
2:{Index:1 MTU:-1 Name:Loopback Pseudo-Interface 1 HardwareAddr: Flags:up|loopback|multicast}
3:{Index:6 MTU:1280 Name:isatap.mshome.net HardwareAddr:00:00:00:00:00:00:00:e0 Flags:pointtopoint|multicast}
4:{Index:8 MTU:1280 Name:Teredo Tunneling Pseudo-Interface HardwareAddr:00:00:00:00:00:00:00:e0 Flags:up|pointtopoint|multicast}
2、google的pcap库
package mainimport ("fmt""time""github.com/google/gopacket/pcap"
)func main() {ifcs, err := pcap.FindAllDevs()if err != nil {fmt.Println(err)return}for k, v := range ifcs {fmt.Printf("%d:%+v\n", k, v)}time.Sleep(time.Hour)
}输出
0:{Name:\Device\NPF_{060xxxxx-7683-xxxx-BB7F-xxxxxxxxxxxx} Description:Intel(R) Wireless-N 7260 Flags:30 Addresses:[{IP:fe80::e9ab:7a6e:32ce:6529 Netmask:ffffffffffffffff0000000000000000 Broadaddr:fe80::ffff:ffff:ffff:ffff P2P:<nil>} {IP:192.168.137.121 Netmask:00ffffff Broadaddr:255.168.137.121 P2P:<nil>}]}
1:{Name:\Device\NPF_{8BFxxxxx-F154-xxxx-8ADB-xxxxxxxxxxxx} Description:Microsoft Wi-Fi Direct Virtual Adapter Flags:46 Addresses:[{IP:fe80::413:2b2e:5d2f:887e Netmask:ffffffffffffffff0000000000000000 Broadaddr:fe80::ffff:ffff:ffff:ffff P2P:<nil>} {IP:169.254.136.126 Netmask:0000ffff Broadaddr:255.255.136.126 P2P:<nil>}]}
2:{Name:\Device\NPF_Loopback Description:Adapter for loopback traffic capture Flags:55 Addresses:[]}
3、windows扩展库
package mainimport ("fmt""time""golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
)func main() {ifcs, err := winipcfg.GetAdaptersAddresses(0, 0x10)if err != nil {fmt.Println(err)return}for k, v := range ifcs {fmt.Printf("%d:%+v\n", k, v)}time.Sleep(time.Hour)
}输出
0:&{Length:448 IfIndex:4 Next:0xc00016xxxx adapterName:0xc00016xxxx FirstUnicastAddress:0xc00016xxxx FirstAnycastAddress:<nil> FirstMulticastAddress:0xc00016xxxx FirstDNSServerAddress:0xc00016xxxx dnsSuffix:0xc00016xxxx description:0xc00016xxxx friendlyName:0xc00016xxxx physicalAddress:[92 197 0 0 0 0 0 0] physicalAddressLength:6 Flags:453 MTU:1500 IfType:71 OperStatus:2 IPv6IfIndex:4 ZoneIndices:[4 4 4 4 1 1 1 1 1 1 1 1 1 1 0 1] FirstPrefix:0xc00016xxxx TransmitLinkSpeed:18446744073709551615 ReceiveLinkSpeed:18446744073709551615 FirstWINSServerAddress:<nil> FirstGatewayAddress:<nil> Ipv4Metric:5 Ipv6Metric:5 LUID:19985000000000000 DHCPv4Server:{Sockaddr:<nil> SockaddrLength:0} CompartmentID:1 NetworkGUID:{6BBxxxxx-2706-xxxx-9BBE-806xxxxxxxxx} ConnectionType:1 TunnelType:0 DHCPv6Server:{Sockaddr:<nil> SockaddrLength:0} dhcpv6ClientDUID:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] dhcpv6ClientDUIDLength:0 DHCPv6IAID:0 FirstDNSSuffix:<nil>}
1:&{Length:448 IfIndex:2 Next:0xc00016xxxx adapterName:0xc00016xxxx FirstUnicastAddress:0xc00016xxxx FirstAnycastAddress:<nil> FirstMulticastAddress:0xc00016xxxx FirstDNSServerAddress:0xc00016xxxx dnsSuffix:0xc00016xxxx description:0xc00016xxxx friendlyName:0xc00016xxxx physicalAddress:[92 197 0 0 0 0 0 0] physicalAddressLength:6 Flags:453 MTU:1500 IfType:71 OperStatus:1 IPv6IfIndex:2 ZoneIndices:[2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 1] FirstPrefix:0xc00016xxxx TransmitLinkSpeed:144400000 ReceiveLinkSpeed:144400000 FirstWINSServerAddress:<nil> FirstGatewayAddress:<nil> Ipv4Metric:25 Ipv6Metric:25 LUID:19985000000000000 DHCPv4Server:{Sockaddr:0xc0001xxxxx SockaddrLength:16} CompartmentID:1 NetworkGUID:{6BBxxxxx-2706-xxxx-9BBE-806xxxxxxxxx} ConnectionType:1 TunnelType:0 DHCPv6Server:{Sockaddr:<nil> SockaddrLength:0} dhcpv6ClientDUID:[0 1 0 1 40 92 58 221 92 197 212 132 171 227 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] dhcpv6ClientDUIDLength:14 DHCPv6IAID:39634388 FirstDNSSuffix:<nil>}
2:&{Length:448 IfIndex:1 Next:0xc00016xxxx adapterName:0xc00016xxxx FirstUnicastAddress:0xc00016xxxx FirstAnycastAddress:<nil> FirstMulticastAddress:0xc00016xxxx FirstDNSServerAddress:0xc00016xxxx dnsSuffix:0xc00016xxxx description:0xc00016xxxx friendlyName:0xc00016xxxx physicalAddress:[0 0 0 0 0 0 0 0] physicalAddressLength:0 Flags:385 MTU:4294967295 IfType:24 OperStatus:1 IPv6IfIndex:1 ZoneIndices:[1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1] FirstPrefix:0xc00016xxxx TransmitLinkSpeed:1073741824 ReceiveLinkSpeed:1073741824 FirstWINSServerAddress:<nil> FirstGatewayAddress:<nil> Ipv4Metric:50 Ipv6Metric:50 LUID:6755000000000000 DHCPv4Server:{Sockaddr:<nil> SockaddrLength:0} CompartmentID:1 NetworkGUID:{6BBxxxxx-2706-xxxx-9BBE-806xxxxxxxxx} ConnectionType:1 TunnelType:0 DHCPv6Server:{Sockaddr:<nil> SockaddrLength:0} dhcpv6ClientDUID:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] dhcpv6ClientDUIDLength:0 DHCPv6IAID:0 FirstDNSSuffix:<nil>}
3:&{Length:448 IfIndex:6 Next:0xc00016xxxx adapterName:0xc00016xxxx FirstUnicastAddress:0xc00016xxxx FirstAnycastAddress:<nil> FirstMulticastAddress:0xc00016xxxx FirstDNSServerAddress:0xc00016xxxx dnsSuffix:0xc00016xxxx description:0xc00016xxxx friendlyName:0xc00016xxxx physicalAddress:[0 0 0 0 0 0 0 0] physicalAddressLength:8 Flags:273 MTU:1280 IfType:131 OperStatus:2 IPv6IfIndex:6 ZoneIndices:[6 6 6 6 1 1 1 1 1 1 1 1 1 1 0 1] FirstPrefix:0xc00016xxxx TransmitLinkSpeed:100000 ReceiveLinkSpeed:100000 FirstWINSServerAddress:<nil> FirstGatewayAddress:<nil> Ipv4Metric:0 Ipv6Metric:50 LUID:36873000000000000 DHCPv4Server:{Sockaddr:<nil> SockaddrLength:0} CompartmentID:1 NetworkGUID:{6BBxxxxx-2706-xxxx-9BBE-806xxxxxxxxx} ConnectionType:1 TunnelType:13 DHCPv6Server:{Sockaddr:<nil> SockaddrLength:0} dhcpv6ClientDUID:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] dhcpv6ClientDUIDLength:0 DHCPv6IAID:0 FirstDNSSuffix:<nil>}
4:&{Length:448 IfIndex:8 Next:<nil> adapterName:0xc00016xxxx FirstUnicastAddress:0xc00016xxxx FirstAnycastAddress:<nil> FirstMulticastAddress:0xc00016xxxx FirstDNSServerAddress:<nil> dnsSuffix:0xc00016xxxx description:0xc00016xxxx friendlyName:0xc00016xxxx physicalAddress:[0 0 0 0 0 0 0 0] physicalAddressLength:8 Flags:272 MTU:1280 IfType:131 OperStatus:1 IPv6IfIndex:8 ZoneIndices:[8 8 8 8 1 1 1 1 1 1 1 1 1 1 0 1] FirstPrefix:0xc00016xxxx TransmitLinkSpeed:100000 ReceiveLinkSpeed:100000 FirstWINSServerAddress:<nil> FirstGatewayAddress:<nil> Ipv4Metric:0 Ipv6Metric:50 LUID:36873000000000000 DHCPv4Server:{Sockaddr:<nil> SockaddrLength:0} CompartmentID:1 NetworkGUID:{6BBxxxxx-2706-xxxx-9BBE-806xxxxxxxxx} ConnectionType:1 TunnelType:14 DHCPv6Server:{Sockaddr:<nil> SockaddrLength:0} dhcpv6ClientDUID:[0 1 0 1 40 92 58 221 92 197 212 132 171 227 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] dhcpv6ClientDUIDLength:14 DHCPv6IAID:268435456 FirstDNSSuffix:<nil>}
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