func Remove(conf *cjdngo.Conf, iface *cjdngo.InterfaceBlock, target string) {
// Try to convert it to a number. If so, then remove a
// password. Otherwise, remove a connection.
index, err := strconv.Atoi(target)
switch err {
case nil: // Password case
if index >= len(conf.AuthorizedPasswords) || index < 0 {
println("There is no password of that index.")
return
}
// Initialize a new array with length - 1
newAuth := make([]cjdngo.AuthPass, len(conf.AuthorizedPasswords)-1)
// Copy the first part, stopping before removed index.
copy(newAuth[:index], conf.AuthorizedPasswords[:index])
// Copy the second part, starting after the removed index.
copy(newAuth[index:], conf.AuthorizedPasswords[index+1:])
conf.AuthorizedPasswords = newAuth
default: // Connection case
oldLen := len(iface.ConnectTo)
if oldLen == 0 {
println("There are no entries in that interface.")
return
}
delete(iface.ConnectTo, target)
if oldLen == len(iface.ConnectTo) {
println("There is no connection identified by that string.")
return
}
}
}
// Authorize takes a cjdngo.Conf object, the details to create the
// displayed connection block with (either TunConn or EthConn), an
// array index, a signed integer, and a cjdngo.AuthPass, which is
// meant to be parsed from user input. If the user input has been
// parsed into an AuthBlock already, then it can be passed and added
// directly. If they are not supplied (nil) then Authorize initiates a
// dialogue with the user to recieve them. The third argument refers
// to the index at which to edit or add the new password. If it is -1,
// then a new password and authorization block is added and appended
// to the list.
func Authorize(conf *cjdngo.Conf, details string, index int, jsonArg []byte) {
var auth *cjdngo.AuthPass
var willAppend bool
// If index is out of the bounds of the existing array, or if it's
// -1, then auth will be empty.
if len(conf.AuthorizedPasswords) <= index || index == -1 {
auth = &cjdngo.AuthPass{}
willAppend = true
} else {
auth = &conf.AuthorizedPasswords[index]
}
// If we weren't passed any details already, we have to ask for
// them. This is the hard bit.
if len(jsonArg) == 0 {
// Take the name from the user. This is optional.
ui("Please enter a name", &auth.Name)
// Likewise, take the location from the user.
ui("Please enter a location", &auth.Location)
// The IPv6 address isn't usually known, but ask anyway.
ui("Please enter an IPv6 address", &auth.IPv6)
if len(auth.Password) == 0 {
auth.Password = getPass(auth.Name)
}
} else {
var inAuth cjdngo.AuthPass
err := json.Unmarshal(jsonArg, &inAuth)
if err != nil {
println("Invalid authorized password.")
return
}
auth = &inAuth
}
// Now we check whether we should append it to the end, or assume
// the changes are already in place. (The latter case is always
// true if we are editing.)
if willAppend {
conf.AuthorizedPasswords = append(conf.AuthorizedPasswords, *auth)
}
// Finally, we need to generate some connection details that the
// authorized party can use. We check to make sure that the
// connection details are in place, but must only ask
// interactively if we haven't been given JSON.
if len(conf.Name) == 0 && len(jsonArg) == 0 {
// If the user did not supply a name, ask for one, which will
// be written back to the configuration.
ui("Please enter your name or username", &conf.Name)
}
if len(conf.Location) == 0 && len(jsonArg) == 0 {
// Similarly for location.
ui("Please enter your displayed location", &conf.Location)
}
for len(conf.TunConn) == 0 && len(jsonArg) == 0 {
var ipv4 string
// If there aren't any details in place, force the user to add
// them. These will be written back to the configuration.
ui("Please enter your IPv4 address", &ipv4)
// BUG(DuoNoxSol): Panic if UDPInterface isn't present
ipv4 += conf.Interfaces.UDPInterface[0].Bind[7:] // cjdns port
conf.TunConn = ipv4
}
// Initialize a map with length 1, which will be used to display
// our new details.
display := make(map[string]*cjdngo.Connection, 1)
display[details] = &cjdngo.Connection{
Name: conf.Name,
Location: conf.Location,
IPv6: conf.IPv6,
Password: auth.Password,
PublicKey: conf.PublicKey,
}
b, err := json.MarshalIndent(display, " ", " ")
if err != nil {
log.Fatal(err)
}
println("\n ", string(b), "\nPlease send these credentials to your peer.")
}