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Merge branch 'main' into feature/add-ios-support

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This commit is contained in:
pascal-fischer
2023-12-06 11:52:27 +01:00
committed by GitHub
parent b2300216bb 27ed88f918
commit 5f96c566ab
136 changed files with 3434 additions and 1130 deletions
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91
client/internal/routemanager/systemops_nonandroid.go
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@@ -14,17 +14,6 @@ import (
var errRouteNotFound = fmt.Errorf("route not found")
func addToRouteTableIfNoExists(prefix netip.Prefix, addr string) error {
defaultGateway, err := getExistingRIBRouteGateway(netip.MustParsePrefix("0.0.0.0/0"))
if err != nil && err != errRouteNotFound {
return err
}
gatewayIP := netip.MustParseAddr(defaultGateway.String())
if prefix.Contains(gatewayIP) {
log.Warnf("skipping adding a new route for network %s because it overlaps with the default gateway: %s", prefix, gatewayIP)
return nil
}
ok, err := existsInRouteTable(prefix)
if err != nil {
return err
@@ -34,20 +23,82 @@ func addToRouteTableIfNoExists(prefix netip.Prefix, addr string) error {
return nil
}
return addToRouteTable(prefix, addr)
}
func removeFromRouteTableIfNonSystem(prefix netip.Prefix, addr string) error {
addrIP := net.ParseIP(addr)
prefixGateway, err := getExistingRIBRouteGateway(prefix)
ok, err = isSubRange(prefix)
if err != nil {
return err
}
if prefixGateway != nil && !prefixGateway.Equal(addrIP) {
log.Warnf("route for network %s is pointing to a different gateway: %s, should be pointing to: %s, not removing", prefix, prefixGateway, addrIP)
if ok {
err := addRouteForCurrentDefaultGateway(prefix)
if err != nil {
log.Warnf("unable to add route for current default gateway route. Will proceed without it. error: %s", err)
}
}
return addToRouteTable(prefix, addr)
}
func addRouteForCurrentDefaultGateway(prefix netip.Prefix) error {
defaultGateway, err := getExistingRIBRouteGateway(netip.MustParsePrefix("0.0.0.0/0"))
if err != nil && err != errRouteNotFound {
return err
}
addr := netip.MustParseAddr(defaultGateway.String())
if !prefix.Contains(addr) {
log.Debugf("skipping adding a new route for gateway %s because it is not in the network %s", addr, prefix)
return nil
}
return removeFromRouteTable(prefix)
gatewayPrefix := netip.PrefixFrom(addr, 32)
ok, err := existsInRouteTable(gatewayPrefix)
if err != nil {
return fmt.Errorf("unable to check if there is an existing route for gateway %s. error: %s", gatewayPrefix, err)
}
if ok {
log.Debugf("skipping adding a new route for gateway %s because it already exists", gatewayPrefix)
return nil
}
gatewayHop, err := getExistingRIBRouteGateway(gatewayPrefix)
if err != nil && err != errRouteNotFound {
return fmt.Errorf("unable to get the next hop for the default gateway address. error: %s", err)
}
log.Debugf("adding a new route for gateway %s with next hop %s", gatewayPrefix, gatewayHop)
return addToRouteTable(gatewayPrefix, gatewayHop.String())
}
func existsInRouteTable(prefix netip.Prefix) (bool, error) {
routes, err := getRoutesFromTable()
if err != nil {
return false, err
}
for _, tableRoute := range routes {
if tableRoute == prefix {
return true, nil
}
}
return false, nil
}
func isSubRange(prefix netip.Prefix) (bool, error) {
routes, err := getRoutesFromTable()
if err != nil {
return false, err
}
for _, tableRoute := range routes {
if tableRoute.Bits() > minRangeBits && tableRoute.Contains(prefix.Addr()) && tableRoute.Bits() < prefix.Bits() {
return true, nil
}
}
return false, nil
}
func removeFromRouteTableIfNonSystem(prefix netip.Prefix, addr string) error {
return removeFromRouteTable(prefix, addr)
}
func getExistingRIBRouteGateway(prefix netip.Prefix) (net.IP, error) {