From d84a722ab077045da68042f49349cd1439452b65 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Fri, 31 Mar 2023 00:05:28 +0200 Subject: [PATCH 01/19] First proof-of-concept --- cmd/app/logger.go | 17 +++++++ cmd/app/main.go | 120 ++++++++++++++++++++++++++++++++++++++++++++++ go.mod | 22 +++++++++ go.sum | 75 +++++++++++++++++++++++++++++ 4 files changed, 234 insertions(+) create mode 100644 cmd/app/logger.go create mode 100644 cmd/app/main.go create mode 100644 go.mod create mode 100644 go.sum diff --git a/cmd/app/logger.go b/cmd/app/logger.go new file mode 100644 index 0000000..2bf05c4 --- /dev/null +++ b/cmd/app/logger.go @@ -0,0 +1,17 @@ +package main + +import ( + "log" + "os" +) + +type Log struct { + Info log.Logger + Warn log.Logger + Error log.Logger +} +var logger Log = Log{ + Info: *log.New(os.Stdout, "[INFO]\t", log.Ltime|log.Lshortfile), + Warn: *log.New(os.Stderr, "[WARN]\t", log.Ltime|log.Lshortfile), + Error: *log.New(os.Stderr, "[ERROR]\t", log.Ltime|log.Lshortfile), +} diff --git a/cmd/app/main.go b/cmd/app/main.go new file mode 100644 index 0000000..7f27500 --- /dev/null +++ b/cmd/app/main.go @@ -0,0 +1,120 @@ +package main + +import ( + "fmt" + "net" + "os" + "time" + + envChecks "git.ruekov.eu/ruakij/routingtabletowg/lib/environmentchecks" + + "github.com/vishvananda/netlink" + "golang.zx2c4.com/wireguard/wgctrl" + "golang.zx2c4.com/wireguard/wgctrl/wgtypes" +) + +var envRequired = []string{ + "INTERFACE", +} +var envDefaults = map[string]string{ + "IPV6_PREFIX": "fd00::", +} + +func main() { + // Environment-vars + err := envChecks.HandleRequired(envRequired) + if(err != nil){ + logger.Error.Fatal(err) + } + envChecks.HandleDefaults(envDefaults) + + // Get the network interface object + iface := os.Getenv("INTERFACE") + netInterface, err := netlink.LinkByName(iface) + if err != nil { + logger.Error.Fatal(err) + return + } + + // Get the IPv4 address of the interface + addrs, err := netlink.AddrList(netInterface, netlink.FAMILY_V4) + if err != nil { + logger.Error.Fatal(err) + return + } + if(len(addrs) == 0){ + logger.Error.Fatal("Interface doesnt have IPv4-Adresses") + } + ipv4Addr := addrs[0].IP.String() + + // Convert the IPv4 address to an IPv6 address + ipv6Prefix := "fd20::" + ipv6Suffix := fmt.Sprintf("%02x%02x", ipv4Addr[12], ipv4Addr[13]) + ipv6AddrStr := ipv6Prefix + ipv6Suffix + "/112" + + // Add the IPv6 address to the interface + ipv6Addr, err := netlink.ParseAddr(ipv6AddrStr) + if err != nil { + logger.Error.Fatal(err) + return + } + err = netlink.AddrAdd(netInterface, ipv6Addr) + if err != nil { + logger.Error.Fatal(err) + return + } + + // Create a WireGuard client + client, err := wgctrl.New() + if err != nil { + logger.Error.Fatal(err) + return + } + defer client.Close() + + // Loop indefinitely + for { + // Get the WireGuard peers on the interface + wgDevice, err := client.Device(iface) + if err != nil { + logger.Error.Fatalf("getting WireGuard device from interface '%s' failed: %s", iface, err) + } + + var wgConfig wgtypes.Config + wgConfig.Peers = make([]wgtypes.PeerConfig, len(wgDevice.Peers)) + + for _, peer := range wgDevice.Peers { + // Create slice with initial size of 2xAllowedIPs as the max we expect + var allowedIPs = make([]net.IPNet, len(peer.AllowedIPs)*2) + // Copy in all old entries + copy(allowedIPs, peer.AllowedIPs) + + // Loop through the allowed-ips and add the ones starting with 100.100 + for _, allowedIP := range peer.AllowedIPs { + if allowedIP.String()[:7] == "100.100" { + // Convert the IPv4 allowed-ip to an IPv6 address + ipv6Suffix := fmt.Sprintf("%02x%02x", allowedIP.IP[2], allowedIP.IP[3]) + ipv6Address := ipv6Prefix + ipv6Suffix + "/128" + ipv6, err := netlink.ParseAddr(ipv6Address) + if err != nil { + logger.Warn.Printf("Couldnt parse IPv6 address %s of peer %s: %s", ipv6Address, peer.PublicKey, err) + continue + } + + // Add the IPv6 allowed-ip to the peer + allowedIPs = append(allowedIPs, *ipv6.IPNet) + } + } + + wgConfig.Peers = append(wgConfig.Peers, wgtypes.PeerConfig{AllowedIPs: allowedIPs}) + } + + err = client.ConfigureDevice(iface, wgConfig) + if(err != nil){ + logger.Error.Fatalf("Error configuring wg-device '%s': %s", iface, err) + } + + // Sleep for 300 seconds before running the loop again + time.Sleep(time.Second * 300) + } +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..1fa5f39 --- /dev/null +++ b/go.mod @@ -0,0 +1,22 @@ +module git.ruekov.eu/wg-ipv6-converter + +go 1.20 + +require golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230215201556-9c5414ab4bde + +require github.com/vishvananda/netns v0.0.4 // indirect + +require ( + git.ruekov.eu/ruakij/routingtabletowg v0.0.0-20230330122950-021bd254f1a4 + github.com/google/go-cmp v0.5.9 // indirect + github.com/josharian/native v1.1.0 // indirect + github.com/mdlayher/genetlink v1.3.1 // indirect + github.com/mdlayher/netlink v1.7.1 // indirect + github.com/mdlayher/socket v0.4.0 // indirect + github.com/vishvananda/netlink v1.1.0 + golang.org/x/crypto v0.7.0 // indirect + golang.org/x/net v0.8.0 // indirect + golang.org/x/sync v0.1.0 // indirect + golang.org/x/sys v0.6.0 // indirect + golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..50a5ae0 --- /dev/null +++ b/go.sum @@ -0,0 +1,75 @@ +git.ruekov.eu/ruakij/routingtabletowg v0.0.0-20230330122950-021bd254f1a4 h1:1dbOQh57z6tB5dc02APz153lGpQ36DkE1khLm3/IGlA= +git.ruekov.eu/ruakij/routingtabletowg v0.0.0-20230330122950-021bd254f1a4/go.mod h1:wYEQNasQeg+oOxXqFBxavBjZfX5hY5qoGrV4K6sRaiI= +github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE= +github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38= +github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= +github.com/josharian/native v1.0.0 h1:Ts/E8zCSEsG17dUqv7joXJFybuMLjQfWE04tsBODTxk= +github.com/josharian/native v1.0.0/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w= +github.com/josharian/native v1.1.0 h1:uuaP0hAbW7Y4l0ZRQ6C9zfb7Mg1mbFKry/xzDAfmtLA= +github.com/josharian/native v1.1.0/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w= +github.com/mdlayher/genetlink v1.2.0 h1:4yrIkRV5Wfk1WfpWTcoOlGmsWgQj3OtQN9ZsbrE+XtU= +github.com/mdlayher/genetlink v1.2.0/go.mod h1:ra5LDov2KrUCZJiAtEvXXZBxGMInICMXIwshlJ+qRxQ= +github.com/mdlayher/genetlink v1.3.1 h1:roBiPnual+eqtRkKX2Jb8UQN5ZPWnhDCGj/wR6Jlz2w= +github.com/mdlayher/genetlink v1.3.1/go.mod h1:uaIPxkWmGk753VVIzDtROxQ8+T+dkHqOI0vB1NA9S/Q= +github.com/mdlayher/netlink v1.6.0/go.mod h1:0o3PlBmGst1xve7wQ7j/hwpNaFaH4qCRyWCdcZk8/vA= +github.com/mdlayher/netlink v1.6.2 h1:D2zGSkvYsJ6NreeED3JiVTu1lj2sIYATqSaZlhPzUgQ= +github.com/mdlayher/netlink v1.6.2/go.mod h1:O1HXX2sIWSMJ3Qn1BYZk1yZM+7iMki/uYGGiwGyq/iU= +github.com/mdlayher/netlink v1.7.1 h1:FdUaT/e33HjEXagwELR8R3/KL1Fq5x3G5jgHLp/BTmg= +github.com/mdlayher/netlink v1.7.1/go.mod h1:nKO5CSjE/DJjVhk/TNp6vCE1ktVxEA8VEh8drhZzxsQ= +github.com/mdlayher/socket v0.1.1/go.mod h1:mYV5YIZAfHh4dzDVzI8x8tWLWCliuX8Mon5Awbj+qDs= +github.com/mdlayher/socket v0.2.3 h1:XZA2X2TjdOwNoNPVPclRCURoX/hokBY8nkTmRZFEheM= +github.com/mdlayher/socket v0.2.3/go.mod h1:bz12/FozYNH/VbvC3q7TRIK/Y6dH1kCKsXaUeXi/FmY= +github.com/mdlayher/socket v0.4.0 h1:280wsy40IC9M9q1uPGcLBwXpcTQDtoGwVt+BNoITxIw= +github.com/mdlayher/socket v0.4.0/go.mod h1:xxFqz5GRCUN3UEOm9CZqEJsAbe1C8OwSK46NlmWuVoc= +github.com/vishvananda/netlink v1.1.0 h1:1iyaYNBLmP6L0220aDnYQpo1QEV4t4hJ+xEEhhJH8j0= +github.com/vishvananda/netlink v1.1.0/go.mod h1:cTgwzPIzzgDAYoQrMm0EdrjRUBkTqKYppBueQtXaqoE= +github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df h1:OviZH7qLw/7ZovXvuNyL3XQl8UFofeikI1NW1Gypu7k= +github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17pCcGlemwknint6hfoeCVQrEMVwxRLRjXpq+BU= +github.com/vishvananda/netns v0.0.4 h1:Oeaw1EM2JMxD51g9uhtC0D7erkIjgmj8+JZc26m1YX8= +github.com/vishvananda/netns v0.0.4/go.mod h1:SpkAiCQRtJ6TvvxPnOSyH3BMl6unz3xZlaprSwhNNJM= +golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= +golang.org/x/crypto v0.1.0 h1:MDRAIl0xIo9Io2xV565hzXHw3zVseKrJKodhohM5CjU= +golang.org/x/crypto v0.1.0/go.mod h1:RecgLatLF4+eUMCP1PoPZQb+cVrJcOPbHkTkbkB9sbw= +golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A= +golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU= +golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= +golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= +golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk= +golang.org/x/net v0.0.0-20220923203811-8be639271d50/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk= +golang.org/x/net v0.1.0 h1:hZ/3BUoy5aId7sCpA/Tc5lt8DkFgdVS2onTpJsZ/fl0= +golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco= +golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ= +golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc= +golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.0.0-20220923202941-7f9b1623fab7/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o= +golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20190606203320-7fc4e5ec1444/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20220128215802-99c3d69c2c27/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U= +golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ= +golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= +golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= +golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= +golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= +golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= +golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= +golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= +golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= +golang.zx2c4.com/wireguard v0.0.0-20220920152132-bb719d3a6e2c h1:Okh6a1xpnJslG9Mn84pId1Mn+Q8cvpo4HCeeFWHo0cA= +golang.zx2c4.com/wireguard v0.0.0-20220920152132-bb719d3a6e2c/go.mod h1:enML0deDxY1ux+B6ANGiwtg0yAJi1rctkTpcHNAVPyg= +golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b h1:J1CaxgLerRR5lgx3wnr6L04cJFbWoceSK9JWBdglINo= +golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b/go.mod h1:tqur9LnfstdR9ep2LaJT4lFUl0EjlHtge+gAjmsHUG4= +golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230215201556-9c5414ab4bde h1:ybF7AMzIUikL9x4LgwEmzhXtzRpKNqngme1VGDWz+Nk= +golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230215201556-9c5414ab4bde/go.mod h1:mQqgjkW8GQQcJQsbBvK890TKqUK1DfKWkuBGbOkuMHQ= From 4b53dd2433c8435f5b0f589d4f5d31db58ce6bc0 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Fri, 31 Mar 2023 17:36:55 +0200 Subject: [PATCH 02/19] Update packages --- go.mod | 2 +- go.sum | 50 +++----------------------------------------------- 2 files changed, 4 insertions(+), 48 deletions(-) diff --git a/go.mod b/go.mod index 1fa5f39..2254175 100644 --- a/go.mod +++ b/go.mod @@ -7,7 +7,7 @@ require golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230215201556-9c5414ab4bde require github.com/vishvananda/netns v0.0.4 // indirect require ( - git.ruekov.eu/ruakij/routingtabletowg v0.0.0-20230330122950-021bd254f1a4 + git.ruekov.eu/ruakij/routingtabletowg v0.0.0-20230331142222-dcc0b6607b52 github.com/google/go-cmp v0.5.9 // indirect github.com/josharian/native v1.1.0 // indirect github.com/mdlayher/genetlink v1.3.1 // indirect diff --git a/go.sum b/go.sum index 50a5ae0..566a44c 100644 --- a/go.sum +++ b/go.sum @@ -1,74 +1,30 @@ -git.ruekov.eu/ruakij/routingtabletowg v0.0.0-20230330122950-021bd254f1a4 h1:1dbOQh57z6tB5dc02APz153lGpQ36DkE1khLm3/IGlA= -git.ruekov.eu/ruakij/routingtabletowg v0.0.0-20230330122950-021bd254f1a4/go.mod h1:wYEQNasQeg+oOxXqFBxavBjZfX5hY5qoGrV4K6sRaiI= -github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= -github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE= +git.ruekov.eu/ruakij/routingtabletowg v0.0.0-20230331142222-dcc0b6607b52 h1:W7nF5Qxua2PDMoogjVXceWSEeboOfd8/HvpIY7HjMbM= +git.ruekov.eu/ruakij/routingtabletowg v0.0.0-20230331142222-dcc0b6607b52/go.mod h1:wYEQNasQeg+oOxXqFBxavBjZfX5hY5qoGrV4K6sRaiI= github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38= github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= -github.com/josharian/native v1.0.0 h1:Ts/E8zCSEsG17dUqv7joXJFybuMLjQfWE04tsBODTxk= -github.com/josharian/native v1.0.0/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w= github.com/josharian/native v1.1.0 h1:uuaP0hAbW7Y4l0ZRQ6C9zfb7Mg1mbFKry/xzDAfmtLA= github.com/josharian/native v1.1.0/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w= -github.com/mdlayher/genetlink v1.2.0 h1:4yrIkRV5Wfk1WfpWTcoOlGmsWgQj3OtQN9ZsbrE+XtU= -github.com/mdlayher/genetlink v1.2.0/go.mod h1:ra5LDov2KrUCZJiAtEvXXZBxGMInICMXIwshlJ+qRxQ= github.com/mdlayher/genetlink v1.3.1 h1:roBiPnual+eqtRkKX2Jb8UQN5ZPWnhDCGj/wR6Jlz2w= github.com/mdlayher/genetlink v1.3.1/go.mod h1:uaIPxkWmGk753VVIzDtROxQ8+T+dkHqOI0vB1NA9S/Q= -github.com/mdlayher/netlink v1.6.0/go.mod h1:0o3PlBmGst1xve7wQ7j/hwpNaFaH4qCRyWCdcZk8/vA= -github.com/mdlayher/netlink v1.6.2 h1:D2zGSkvYsJ6NreeED3JiVTu1lj2sIYATqSaZlhPzUgQ= -github.com/mdlayher/netlink v1.6.2/go.mod h1:O1HXX2sIWSMJ3Qn1BYZk1yZM+7iMki/uYGGiwGyq/iU= github.com/mdlayher/netlink v1.7.1 h1:FdUaT/e33HjEXagwELR8R3/KL1Fq5x3G5jgHLp/BTmg= github.com/mdlayher/netlink v1.7.1/go.mod h1:nKO5CSjE/DJjVhk/TNp6vCE1ktVxEA8VEh8drhZzxsQ= -github.com/mdlayher/socket v0.1.1/go.mod h1:mYV5YIZAfHh4dzDVzI8x8tWLWCliuX8Mon5Awbj+qDs= -github.com/mdlayher/socket v0.2.3 h1:XZA2X2TjdOwNoNPVPclRCURoX/hokBY8nkTmRZFEheM= -github.com/mdlayher/socket v0.2.3/go.mod h1:bz12/FozYNH/VbvC3q7TRIK/Y6dH1kCKsXaUeXi/FmY= github.com/mdlayher/socket v0.4.0 h1:280wsy40IC9M9q1uPGcLBwXpcTQDtoGwVt+BNoITxIw= github.com/mdlayher/socket v0.4.0/go.mod h1:xxFqz5GRCUN3UEOm9CZqEJsAbe1C8OwSK46NlmWuVoc= +github.com/mikioh/ipaddr v0.0.0-20190404000644-d465c8ab6721 h1:RlZweED6sbSArvlE924+mUcZuXKLBHA35U7LN621Bws= github.com/vishvananda/netlink v1.1.0 h1:1iyaYNBLmP6L0220aDnYQpo1QEV4t4hJ+xEEhhJH8j0= github.com/vishvananda/netlink v1.1.0/go.mod h1:cTgwzPIzzgDAYoQrMm0EdrjRUBkTqKYppBueQtXaqoE= -github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df h1:OviZH7qLw/7ZovXvuNyL3XQl8UFofeikI1NW1Gypu7k= github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17pCcGlemwknint6hfoeCVQrEMVwxRLRjXpq+BU= github.com/vishvananda/netns v0.0.4 h1:Oeaw1EM2JMxD51g9uhtC0D7erkIjgmj8+JZc26m1YX8= github.com/vishvananda/netns v0.0.4/go.mod h1:SpkAiCQRtJ6TvvxPnOSyH3BMl6unz3xZlaprSwhNNJM= -golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= -golang.org/x/crypto v0.1.0 h1:MDRAIl0xIo9Io2xV565hzXHw3zVseKrJKodhohM5CjU= -golang.org/x/crypto v0.1.0/go.mod h1:RecgLatLF4+eUMCP1PoPZQb+cVrJcOPbHkTkbkB9sbw= golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A= golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU= -golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= -golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= -golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk= -golang.org/x/net v0.0.0-20220923203811-8be639271d50/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk= -golang.org/x/net v0.1.0 h1:hZ/3BUoy5aId7sCpA/Tc5lt8DkFgdVS2onTpJsZ/fl0= -golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco= golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ= golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc= -golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= -golang.org/x/sync v0.0.0-20220923202941-7f9b1623fab7/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o= golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= -golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190606203320-7fc4e5ec1444/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.0.0-20220128215802-99c3d69c2c27/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U= -golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ= golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= -golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= -golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= -golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= -golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= -golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= -golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= -golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= -golang.zx2c4.com/wireguard v0.0.0-20220920152132-bb719d3a6e2c h1:Okh6a1xpnJslG9Mn84pId1Mn+Q8cvpo4HCeeFWHo0cA= -golang.zx2c4.com/wireguard v0.0.0-20220920152132-bb719d3a6e2c/go.mod h1:enML0deDxY1ux+B6ANGiwtg0yAJi1rctkTpcHNAVPyg= golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b h1:J1CaxgLerRR5lgx3wnr6L04cJFbWoceSK9JWBdglINo= golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b/go.mod h1:tqur9LnfstdR9ep2LaJT4lFUl0EjlHtge+gAjmsHUG4= golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230215201556-9c5414ab4bde h1:ybF7AMzIUikL9x4LgwEmzhXtzRpKNqngme1VGDWz+Nk= From db7b3c587f5ac6c6070cf9bf2a83b25eb582e083 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Fri, 31 Mar 2023 17:41:15 +0200 Subject: [PATCH 03/19] Remove unecessary return --- cmd/app/main.go | 4 ---- 1 file changed, 4 deletions(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index 7f27500..bd0c6d4 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -40,7 +40,6 @@ func main() { addrs, err := netlink.AddrList(netInterface, netlink.FAMILY_V4) if err != nil { logger.Error.Fatal(err) - return } if(len(addrs) == 0){ logger.Error.Fatal("Interface doesnt have IPv4-Adresses") @@ -56,19 +55,16 @@ func main() { ipv6Addr, err := netlink.ParseAddr(ipv6AddrStr) if err != nil { logger.Error.Fatal(err) - return } err = netlink.AddrAdd(netInterface, ipv6Addr) if err != nil { logger.Error.Fatal(err) - return } // Create a WireGuard client client, err := wgctrl.New() if err != nil { logger.Error.Fatal(err) - return } defer client.Close() From d944d2b827ea15df6dff749bbbc20321cee863ba Mon Sep 17 00:00:00 2001 From: Ruakij Date: Fri, 31 Mar 2023 17:55:03 +0200 Subject: [PATCH 04/19] Write to index instead of append --- cmd/app/main.go | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index bd0c6d4..168233b 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -79,7 +79,7 @@ func main() { var wgConfig wgtypes.Config wgConfig.Peers = make([]wgtypes.PeerConfig, len(wgDevice.Peers)) - for _, peer := range wgDevice.Peers { + for i, peer := range wgDevice.Peers { // Create slice with initial size of 2xAllowedIPs as the max we expect var allowedIPs = make([]net.IPNet, len(peer.AllowedIPs)*2) // Copy in all old entries @@ -102,7 +102,7 @@ func main() { } } - wgConfig.Peers = append(wgConfig.Peers, wgtypes.PeerConfig{AllowedIPs: allowedIPs}) + wgConfig.Peers[i] = wgtypes.PeerConfig{AllowedIPs: allowedIPs} } err = client.ConfigureDevice(iface, wgConfig) From 3ff87ca7247a6a6edbcfc497adf90372f30909b4 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Fri, 31 Mar 2023 17:56:32 +0200 Subject: [PATCH 05/19] Convert Ip to IPNet --- cmd/app/main.go | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index 168233b..dd8d603 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -91,14 +91,14 @@ func main() { // Convert the IPv4 allowed-ip to an IPv6 address ipv6Suffix := fmt.Sprintf("%02x%02x", allowedIP.IP[2], allowedIP.IP[3]) ipv6Address := ipv6Prefix + ipv6Suffix + "/128" - ipv6, err := netlink.ParseAddr(ipv6Address) + ipv6, err := netlink.ParseIPNet(ipv6Address) if err != nil { logger.Warn.Printf("Couldnt parse IPv6 address %s of peer %s: %s", ipv6Address, peer.PublicKey, err) continue } // Add the IPv6 allowed-ip to the peer - allowedIPs = append(allowedIPs, *ipv6.IPNet) + allowedIPs = append(allowedIPs, *ipv6) } } From e6edb6ae2bd7af344a82c61a7219362848d03f8a Mon Sep 17 00:00:00 2001 From: Ruakij Date: Fri, 31 Mar 2023 19:59:17 +0200 Subject: [PATCH 06/19] Add check if allowedIp already set --- cmd/app/main.go | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index dd8d603..fd3c3c2 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -7,7 +7,8 @@ import ( "time" envChecks "git.ruekov.eu/ruakij/routingtabletowg/lib/environmentchecks" - + "git.ruekov.eu/ruakij/routingtabletowg/lib/wgchecks/netchecks" + "github.com/vishvananda/netlink" "golang.zx2c4.com/wireguard/wgctrl" "golang.zx2c4.com/wireguard/wgctrl/wgtypes" @@ -96,6 +97,11 @@ func main() { logger.Warn.Printf("Couldnt parse IPv6 address %s of peer %s: %s", ipv6Address, peer.PublicKey, err) continue } + + // Check if already set + if i, _ := netchecks.IPNetIndexByIPNet(&peer.AllowedIPs, ipv6); i != -1 { + continue + } // Add the IPv6 allowed-ip to the peer allowedIPs = append(allowedIPs, *ipv6) From e980f520e2e946504fd99af639bc07258330b1a5 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Fri, 31 Mar 2023 20:00:39 +0200 Subject: [PATCH 07/19] Properly setup storange handling with slices --- cmd/app/main.go | 38 +++++++++++++++++++++++++------------- 1 file changed, 25 insertions(+), 13 deletions(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index fd3c3c2..35c5a2c 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -59,7 +59,12 @@ func main() { } err = netlink.AddrAdd(netInterface, ipv6Addr) if err != nil { - logger.Error.Fatal(err) + switch { + case os.IsExist(err): + logger.Warn.Println("Address is already set on interface") + default: + logger.Error.Fatalf("Failed to set address on interface: %v", err) + } } // Create a WireGuard client @@ -78,13 +83,11 @@ func main() { } var wgConfig wgtypes.Config - wgConfig.Peers = make([]wgtypes.PeerConfig, len(wgDevice.Peers)) + wgConfig.Peers = make([]wgtypes.PeerConfig, 0, len(wgDevice.Peers)) - for i, peer := range wgDevice.Peers { - // Create slice with initial size of 2xAllowedIPs as the max we expect - var allowedIPs = make([]net.IPNet, len(peer.AllowedIPs)*2) - // Copy in all old entries - copy(allowedIPs, peer.AllowedIPs) + for _, peer := range wgDevice.Peers { + // Create slice for 1 expected addition + var addAllowedIPs = make([]net.IPNet, 0, 1) // Loop through the allowed-ips and add the ones starting with 100.100 for _, allowedIP := range peer.AllowedIPs { @@ -104,18 +107,27 @@ func main() { } // Add the IPv6 allowed-ip to the peer - allowedIPs = append(allowedIPs, *ipv6) + addAllowedIPs = append(addAllowedIPs, *ipv6) } } - wgConfig.Peers[i] = wgtypes.PeerConfig{AllowedIPs: allowedIPs} + if(len(addAllowedIPs) > 0){ + // Create peer-config + peerConfig := wgtypes.PeerConfig{ + PublicKey: peer.PublicKey, + AllowedIPs: append(peer.AllowedIPs, addAllowedIPs...), + } + + // Add entry + wgConfig.Peers = append(wgConfig.Peers, peerConfig) + } } err = client.ConfigureDevice(iface, wgConfig) - if(err != nil){ - logger.Error.Fatalf("Error configuring wg-device '%s': %s", iface, err) - } - + if(err != nil){ + logger.Error.Fatalf("Error configuring wg-device '%s': %s", iface, err) + } + // Sleep for 300 seconds before running the loop again time.Sleep(time.Second * 300) } From 4fd103f722fcadcecc5df7fa4d9023b97ace0187 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Fri, 31 Mar 2023 20:01:13 +0200 Subject: [PATCH 08/19] Only run configure if anything changed --- cmd/app/main.go | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index 35c5a2c..766fc30 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -123,9 +123,13 @@ func main() { } } - err = client.ConfigureDevice(iface, wgConfig) - if(err != nil){ - logger.Error.Fatalf("Error configuring wg-device '%s': %s", iface, err) + if(len(wgConfig.Peers) == 0){ + logger.Info.Println("No changes, skipping") + } else { + err = client.ConfigureDevice(iface, wgConfig) + if(err != nil){ + logger.Error.Fatalf("Error configuring wg-device '%s': %s", iface, err) + } } // Sleep for 300 seconds before running the loop again From 8a6f16303e86619f52ea9d9e3e13f4b25318023a Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 11:34:29 +0200 Subject: [PATCH 09/19] Remove unecessary return --- cmd/app/main.go | 1 - 1 file changed, 1 deletion(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index 766fc30..3172698 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -34,7 +34,6 @@ func main() { netInterface, err := netlink.LinkByName(iface) if err != nil { logger.Error.Fatal(err) - return } // Get the IPv4 address of the interface From d9fe4ec429881a10bdcd12127aead50c6659642b Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 11:35:55 +0200 Subject: [PATCH 10/19] Add IPV6_FORMAT env variable & function to format --- cmd/app/main.go | 44 ++++++++++++++++++++++++++------------------ 1 file changed, 26 insertions(+), 18 deletions(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index 3172698..74eb215 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -18,7 +18,7 @@ var envRequired = []string{ "INTERFACE", } var envDefaults = map[string]string{ - "IPV6_PREFIX": "fd00::", + "IPV6_FORMAT": "fc12::%02x%02x:%02x%02x/%s", } func main() { @@ -36,27 +36,29 @@ func main() { logger.Error.Fatal(err) } - // Get the IPv4 address of the interface + ipv6Format := os.Getenv("IPV6_FORMAT") + ipv6TestStr := *convertIPv4ToIPv6(&ipv6Format, &net.IPNet{IP: net.IPv4(1,1,1,1), Mask: net.CIDRMask(24, net.IPv4len)}) + _, err = netlink.ParseIPNet(ipv6TestStr) + if err != nil { + logger.Error.Fatalf("IPV6_FORMAT is invalid: %s", err) + } + + // Get the IPv4 address of the interface addrs, err := netlink.AddrList(netInterface, netlink.FAMILY_V4) if err != nil { logger.Error.Fatal(err) } - if(len(addrs) == 0){ - logger.Error.Fatal("Interface doesnt have IPv4-Adresses") - } - ipv4Addr := addrs[0].IP.String() - - // Convert the IPv4 address to an IPv6 address - ipv6Prefix := "fd20::" - ipv6Suffix := fmt.Sprintf("%02x%02x", ipv4Addr[12], ipv4Addr[13]) - ipv6AddrStr := ipv6Prefix + ipv6Suffix + "/112" + if(len(addrs) == 0){ + logger.Error.Fatal("Interface doesnt have IPv4-Adresses") + } // Add the IPv6 address to the interface - ipv6Addr, err := netlink.ParseAddr(ipv6AddrStr) + ipv6Str := *convertIPv4ToIPv6(&ipv6Format, addrs[0].IPNet) + ipv6, err := netlink.ParseAddr(ipv6Str) if err != nil { logger.Error.Fatal(err) } - err = netlink.AddrAdd(netInterface, ipv6Addr) + err = netlink.AddrAdd(netInterface, ipv6) if err != nil { switch { case os.IsExist(err): @@ -90,13 +92,12 @@ func main() { // Loop through the allowed-ips and add the ones starting with 100.100 for _, allowedIP := range peer.AllowedIPs { - if allowedIP.String()[:7] == "100.100" { + if allowedIP.String()[:len(filterPrefix)] == filterPrefix { // Convert the IPv4 allowed-ip to an IPv6 address - ipv6Suffix := fmt.Sprintf("%02x%02x", allowedIP.IP[2], allowedIP.IP[3]) - ipv6Address := ipv6Prefix + ipv6Suffix + "/128" - ipv6, err := netlink.ParseIPNet(ipv6Address) + ipv6Str := *convertIPv4ToIPv6(&ipv6Format, &net.IPNet{IP: allowedIP.IP, Mask: allowedIP.Mask}) + ipv6, err := netlink.ParseIPNet(ipv6Str) if err != nil { - logger.Warn.Printf("Couldnt parse IPv6 address %s of peer %s: %s", ipv6Address, peer.PublicKey, err) + logger.Warn.Printf("Couldnt parse IPv6 address %s of peer %s: %s", ipv6Str, peer.PublicKey, err) continue } @@ -135,3 +136,10 @@ func main() { time.Sleep(time.Second * 300) } } + +func convertIPv4ToIPv6(ipv6Format *string, ipv4 *net.IPNet) (*string) { + CIDR, _ := ipv4.Mask.Size() + // Run format + ipv6Str := fmt.Sprintf(*ipv6Format, (*ipv4).IP[0], (*ipv4).IP[1], (*ipv4).IP[2], (*ipv4).IP[4], 128-CIDR) + return &ipv6Str +} From 662d3ec6d8881460e39583cfe5d5ad44d737e6d3 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 11:36:43 +0200 Subject: [PATCH 11/19] Implement FILTER_PREFIX for specifying filter-ip --- cmd/app/main.go | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/cmd/app/main.go b/cmd/app/main.go index 74eb215..c6213f2 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -19,6 +19,7 @@ var envRequired = []string{ } var envDefaults = map[string]string{ "IPV6_FORMAT": "fc12::%02x%02x:%02x%02x/%s", + "FILTER_PREFIX": "100.100", } func main() { @@ -43,6 +44,9 @@ func main() { logger.Error.Fatalf("IPV6_FORMAT is invalid: %s", err) } + filterPrefix := os.Getenv("FILTER_PREFIX") + + // Get the IPv4 address of the interface addrs, err := netlink.AddrList(netInterface, netlink.FAMILY_V4) if err != nil { From b5af2ce258fcfa07192cbf5a9142f1fd6aa7be48 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 11:47:40 +0200 Subject: [PATCH 12/19] Add License --- LICENSE | 674 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 674 insertions(+) create mode 100644 LICENSE diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..63c3050 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + {{ project }} Copyright (C) {{ year }} {{ organization }} + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. From 1d48e2ac4edc66e8508d2b52d01b818cc0cbcdfa Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 11:54:45 +0200 Subject: [PATCH 13/19] Add documentation --- README.md | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) diff --git a/README.md b/README.md index a0b5bee..ac10ca7 100644 --- a/README.md +++ b/README.md @@ -5,3 +5,90 @@ Converts and adds IPv4- to IPv6-Adresses and AllowedIP-Entries for wireguard-int
+ +- [1. Overview](#1-overview) +- [2. Install](#2-install) + - [2.1. From Binary](#21-from-binary) + - [2.2. From sources](#22-from-sources) +- [3. Setup](#3-setup) + - [3.1. Environment](#31-environment) + - [3.2. Examples](#32-examples) +- [4. License](#4-license) + + +
+ +# 1. Overview + +The program will convert IPv4-only wireguard-interfaces to IPv6. It converts and adds the Address of the Interface and AllowedIPs-Entries with optional filters. + +IPv6-Adresses are generated based on the IPv4-Adress. + +Beware: This program needs `NET_ADMIN` privileges for setting Adresses and to access the wireguard-daemon. + +
+ +# 2. Install + +## 2.1. From Binary + +1. Download the appripriate binary for your system from the Release-page (or build from sources) +2. Save at an appropriate location e.g. `/usr/bin/local/wg-ipv6-converter` +3. Make executeable: `chmod +x /usr/bin/local/wg-ipv6-converter` + +
+ +## 2.2. From sources + +Clone the repository and compile using `go build ./cmd/app` + +
+ +# 3. Setup +## 3.1. Environment + +Variable|Description|Default +-|-|- +`INTERFACE`* | Wireguard-Interface Name | +`IPV6_FORMAT` | Format to use for converting v4 to v6
The CIDR-Mask gets translated using 128 - 24 - Mask
e.g. `10.0.100.5/16` -> `fc12::0a00:6405/96` | `fc12::%02x%02x:%02x%02x/%d` +`RECHECK_INTERVAL` | Interval in seconds to recheck AllowedIPs entries in case something changed | 300 + +*\* Required* + +
+ +## 3.2. Examples + +### 3.2.1. Netbird + +Netbird is at the moment only IPv4-compatible, with this program running where necessary, some basic IPv6-setup can be archieved. + +```bash +INTERFACE="wt0" ./wg-ipv6-converter +``` +Or using a systemd-service based on the example: +```bash +[Unit] +Description=WireGuard IPv6 converter for netbird +BindsTo=netbird.service + +[Service] +Type=simple +ExecStart=/usr/local/bin/wg-ipv6-converter +Restart=always +RestartSec=60 +StandardOutput=syslog +StandardError=syslog + +Environment="INTERFACE=wt0" + +[Install] +WantedBy=multi-user.target +``` + +
+ +# 4. License + +This project is licenced under GPLv3. +See [LICENSE](LICENSE) for more details. From fb2a57288e6ed6c40535e6ae9a6ad973568ca270 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 12:09:46 +0200 Subject: [PATCH 14/19] Fix default env ipv6-format --- cmd/app/main.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index c6213f2..59b89e9 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -18,7 +18,7 @@ var envRequired = []string{ "INTERFACE", } var envDefaults = map[string]string{ - "IPV6_FORMAT": "fc12::%02x%02x:%02x%02x/%s", + "IPV6_FORMAT": "fc12::%02x%02x:%02x%02x/%d", "FILTER_PREFIX": "100.100", } From 2f8cfa6afa2abd2947b642e54315be120b62c6ef Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 12:10:09 +0200 Subject: [PATCH 15/19] Fix conversion between IPv4 -> IPv6 CIDR --- cmd/app/main.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index 59b89e9..e21a9d6 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -144,6 +144,6 @@ func main() { func convertIPv4ToIPv6(ipv6Format *string, ipv4 *net.IPNet) (*string) { CIDR, _ := ipv4.Mask.Size() // Run format - ipv6Str := fmt.Sprintf(*ipv6Format, (*ipv4).IP[0], (*ipv4).IP[1], (*ipv4).IP[2], (*ipv4).IP[4], 128-CIDR) + ipv6Str := fmt.Sprintf(*ipv6Format, (*ipv4).IP[0], (*ipv4).IP[1], (*ipv4).IP[2], (*ipv4).IP[3], net.IPv6len*8-(net.IPv4len*8-CIDR)) return &ipv6Str } From f34522ef982d4330901a39d7dbec728176ee716a Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 12:10:23 +0200 Subject: [PATCH 16/19] Add log-message for actions --- cmd/app/main.go | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index e21a9d6..ce775e9 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -62,6 +62,7 @@ func main() { if err != nil { logger.Error.Fatal(err) } + logger.Info.Printf("Adding converted %s -> %s to interface", addrs[0].IPNet.String(), ipv6Str) err = netlink.AddrAdd(netInterface, ipv6) if err != nil { switch { @@ -98,7 +99,8 @@ func main() { for _, allowedIP := range peer.AllowedIPs { if allowedIP.String()[:len(filterPrefix)] == filterPrefix { // Convert the IPv4 allowed-ip to an IPv6 address - ipv6Str := *convertIPv4ToIPv6(&ipv6Format, &net.IPNet{IP: allowedIP.IP, Mask: allowedIP.Mask}) + ipv6Str := *convertIPv4ToIPv6(&ipv6Format, &allowedIP) + logger.Info.Printf("Add converted AllowedIP %s -> %s to peer %s", allowedIP.String(), ipv6Str, peer.PublicKey) ipv6, err := netlink.ParseIPNet(ipv6Str) if err != nil { logger.Warn.Printf("Couldnt parse IPv6 address %s of peer %s: %s", ipv6Str, peer.PublicKey, err) From a626ee3c6f60c10807faa635af7c594a9ed491d9 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 12:16:45 +0200 Subject: [PATCH 17/19] Change log-msg for allowedip --- cmd/app/main.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index ce775e9..23ae867 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -100,7 +100,7 @@ func main() { if allowedIP.String()[:len(filterPrefix)] == filterPrefix { // Convert the IPv4 allowed-ip to an IPv6 address ipv6Str := *convertIPv4ToIPv6(&ipv6Format, &allowedIP) - logger.Info.Printf("Add converted AllowedIP %s -> %s to peer %s", allowedIP.String(), ipv6Str, peer.PublicKey) + logger.Info.Printf("AllowedIP %s -> %s to peer %s", allowedIP.String(), ipv6Str, peer.PublicKey) ipv6, err := netlink.ParseIPNet(ipv6Str) if err != nil { logger.Warn.Printf("Couldnt parse IPv6 address %s of peer %s: %s", ipv6Str, peer.PublicKey, err) From f06f9f03ffac32d64a4a8df32fded5af6deb302f Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 12:16:56 +0200 Subject: [PATCH 18/19] Add RECHECK_INTERVAL env-var --- cmd/app/main.go | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/cmd/app/main.go b/cmd/app/main.go index 23ae867..0e94083 100644 --- a/cmd/app/main.go +++ b/cmd/app/main.go @@ -4,6 +4,7 @@ import ( "fmt" "net" "os" + "strconv" "time" envChecks "git.ruekov.eu/ruakij/routingtabletowg/lib/environmentchecks" @@ -20,6 +21,7 @@ var envRequired = []string{ var envDefaults = map[string]string{ "IPV6_FORMAT": "fc12::%02x%02x:%02x%02x/%d", "FILTER_PREFIX": "100.100", + "RECHECK_INTERVAL": "300", } func main() { @@ -46,6 +48,12 @@ func main() { filterPrefix := os.Getenv("FILTER_PREFIX") + checkIntervalStr := os.Getenv("RECHECK_INTERVAL") + checkIntervalSec, err := strconv.Atoi(checkIntervalStr) + if err != nil { + logger.Error.Fatalf("Couldn't read RECHECK_INTERVAL '%s': %s", checkIntervalStr, err) + } + checkInterval := time.Second * time.Duration(checkIntervalSec) // Get the IPv4 address of the interface addrs, err := netlink.AddrList(netInterface, netlink.FAMILY_V4) @@ -138,8 +146,8 @@ func main() { } } - // Sleep for 300 seconds before running the loop again - time.Sleep(time.Second * 300) + // Sleep for x seconds before running the loop again + time.Sleep(checkInterval) } } From df1708152c6bff232badc9fa3b8ba415024912c7 Mon Sep 17 00:00:00 2001 From: Ruakij Date: Sat, 1 Apr 2023 12:36:58 +0200 Subject: [PATCH 19/19] Update systemd-example --- README.md | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/README.md b/README.md index ac10ca7..8111478 100644 --- a/README.md +++ b/README.md @@ -71,16 +71,17 @@ Or using a systemd-service based on the example: [Unit] Description=WireGuard IPv6 converter for netbird BindsTo=netbird.service +After=netbird.service [Service] Type=simple +ExecStartPre=/bin/sleep 10 ExecStart=/usr/local/bin/wg-ipv6-converter Restart=always -RestartSec=60 -StandardOutput=syslog -StandardError=syslog +RestartSec=30 Environment="INTERFACE=wt0" +Environment="RECHECK_INTERVAL=60" [Install] WantedBy=multi-user.target