implement Dbus updateAccount and listDevices (#730)

* implement Dbus updateAccount and listDevices

implement updateAccount(deviceName<s>) to change device name

implement listDevices

update documentation

* implement Dbus addDevice and removeDevice

update documentation as well

* Dbus add/remove/list/update devices

modifications responding to requests by AsamK

* Dbus incorporating InvalidUri error

Co-authored-by: AsamK <asamk@gmx.de>

man/signal-cli-dbus.5.adoc

@@ -44,6 +44,64 @@ Phone numbers always have the format +<countrycode><regional number>
 
 == Methods
 
+=== Control methods
+These methods are available if the daemon is started anonymously (without an explicit `-u USERNAME`). 
+Requests are sent to `/org/asamk/Signal`; requests related to individual accounts are sent to 
+`/org/asamk/Signal/_441234567890` where the + dialing code is replaced by an underscore (_). 
+Only `version()` is activated in single-user mode; the rest are disabled.
+
+link() -> deviceLinkUri<s>::
+link(newDeviceName<s>) -> deviceLinkUri<s>::
+* newDeviceName : Name to give new device (defaults to "cli" if no name is given)
+* deviceLinkUri : URI of newly linked device
+
+Returns a URI of the form "tsdevice:/?uuid=...". This can be piped to a QR encoder to create a display that
+can be captured by a Signal smartphone client. For example:
+
+`dbus-send --session --dest=org.asamk.Signal --type=method_call --print-reply /org/asamk/Signal org.asamk.Signal.link string:"My secondary client"|tr '\n' '\0'|sed 's/.*string //g'|sed 's/\"//g'|qrencode -s10 -tANSI256`
+
+Exception: Failure
+
+listAccounts() -> accountList<as>::
+* accountList : Array of all attached accounts in DBus object path form
+
+Exceptions: None
+
+register(number<s>, voiceVerification<b>) -> <>::
+* number            : Phone number
+* voiceVerification : true = use voice verification; false = use SMS verification
+
+Exceptions: Failure, InvalidNumber, RequiresCaptcha
+
+registerWithCaptcha(number<s>, voiceVerification<b>, captcha<s>) -> <>::
+* number            : Phone number
+* voiceVerification : true = use voice verification; false = use SMS verification
+* captcha           : Captcha string
+
+Exceptions: Failure, InvalidNumber, RequiresCaptcha
+
+verify(number<s>, verificationCode<s>) -> <>::
+* number            : Phone number
+* verificationCode  : Code received from Signal after successful registration request
+
+Command fails if PIN was set after previous registration; use verifyWithPin instead.
+
+Exception: Failure, InvalidNumber
+
+verifyWithPin(number<s>, verificationCode<s>, pin<s>) -> <>::
+* number            : Phone number
+* verificationCode  : Code received from Signal after successful registration request
+* pin               : PIN you set with setPin command after verifying previous registration
+
+Exception: Failure, InvalidNumber
+
+version() -> version<s>::
+* version : Version string of signal-cli
+
+Exceptions: None
+
+=== Other methods
+
 updateGroup(groupId<ay>, newName<s>, members<as>, avatar<s>) -> groupId<ay>::
 * groupId  : Byte array representing the internal group identifier
 * newName  : New name of group (empty if unchanged)
@@ -267,6 +325,28 @@ version() -> version<s>::
 isRegistred -> result<b>::
 * result : Currently always returns 1=true
 
+addDevice(deviceUri<s>) -> <>::
+* deviceUri : URI in the form of tsdevice:/?uuid=... Normally received from Signal desktop or smartphone app
+
+Exception: InvalidUri
+
+listDevices() -> devices<as>::
+* devices  : String array of linked devices
+
+Exception: Failure
+
+removeDevice(deviceId<i>) -> <>::
+* deviceId : Device ID to remove, obtained from listDevices() command
+
+Exception: Failure
+
+updateDeviceName(deviceName<s>) -> <>::
+* deviceName : New name 
+
+Set a new name for this device (main or linked).
+
+Exception: Failure
+
 uploadStickerPack(stickerPackPath<s>) -> url<s>::
 * stickerPackPath : Path to the manifest.json file or a zip file in the same directory
 * url             : URL of sticker pack after successful upload