55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package builtins
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import (
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"monkey/internal/object"
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"monkey/internal/typing"
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"syscall"
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)
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// Bind ...
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func Bind(args ...object.Object) object.Object {
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if err := typing.Check(
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"bind", args,
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typing.ExactArgs(2),
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typing.WithTypes(object.INTEGER_OBJ, object.INTEGER_OBJ),
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); err != nil {
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return newError(err.Error())
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}
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var (
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err error
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sockaddr syscall.Sockaddr
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)
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fd := int(args[0].(*object.Integer).Value)
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address := args[1].(*object.String).Value
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sockaddr, err = syscall.Getsockname(syscall.Handle(fd))
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if err != nil {
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return newError("ValueError: %s", err)
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}
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if _, ok := sockaddr.(*syscall.SockaddrInet4); ok {
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addr, port, err := parseV4Address(address)
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if err != nil {
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return newError("ValueError: Invalid IPv4 address '%s': %s", address, err)
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}
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sockaddr = &syscall.SockaddrInet4{Addr: addr, Port: port}
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} else if _, ok := sockaddr.(*syscall.SockaddrInet6); ok {
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addr, port, err := parseV6Address(address)
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if err != nil {
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return newError("ValueError: Invalid IPv6 address '%s': %s", address, err)
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}
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sockaddr = &syscall.SockaddrInet6{Addr: addr, Port: port}
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} else {
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return newError("ValueError: Invalid socket type %T for bind '%s'", sockaddr, address)
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}
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err = syscall.Bind(syscall.Handle(fd), sockaddr)
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if err != nil {
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return newError("SocketError: %s", err)
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}
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return &object.Null{}
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}
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