56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package builtins
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import (
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"monkey/internal/context"
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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(ctx context.Context, 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.IntegerType, object.IntegerType),
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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(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(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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