Feature/mobilegestalt (danielpaulus#60)

adds mobilegestalt support. You can get your result in JSON or the PLIST format. The default is JSON.
ios mobilegestalt MainScreenCanvasSizes ArtworkTraits
if you need plists call it like this:
ios mobilegestalt MainScreenCanvasSizes ArtworkTraits --plist

Author: danielpaulus

README.md

@@ -22,9 +22,9 @@ Options:
   --udid=<udid>  UDID of the device.
 
 The commands work as following:
-        The default output of all commands is JSON. Should you prefer human readable outout, specify the --nojson option with your command. 
-        By default, the first device found will be used for a command unless you specify a --udid=some_udid switch.
-        Specify -v for debug logging and -t for dumping every message.
+	The default output of all commands is JSON. Should you prefer human readable outout, specify the --nojson option with your command. 
+	By default, the first device found will be used for a command unless you specify a --udid=some_udid switch.
+	Specify -v for debug logging and -t for dumping every message.
 
    ios listen [options]                                               Keeps a persistent connection open and notifies about newly connected or disconnected devices.
    ios list [options] [--details]                                     Prints a list of all connected device's udids. If --details is specified, it includes version, name and model of each device.
@@ -40,6 +40,9 @@ The commands work as following:
    ios devicestate enable <profileTypeId> <profileId> [options]       Enables a profile with ids (use the list command to see options). It will only stay active until the process is terminated.
    >                                                                  Ex. "ios devicestate enable SlowNetworkCondition SlowNetwork3GGood"
    ios lang [--setlocale=<locale>] [--setlang=<newlang>] [options]    Sets or gets the Device language
+   ios mobilegestalt <key>... [--plist] [options]                     Lets you query mobilegestalt keys. Standard output is json but if desired you can get
+   >                                                                  it in plist format by adding the --plist param. 
+   >                                                                  Ex.: "ios mobilegestalt MainScreenCanvasSizes ArtworkTraits --plist"
    ios diagnostics list [options]                                     List diagnostic infos
    ios pair [--p12file=<orgid>] [--password=<p12password>] [options]  Pairs the device. If the device is supervised, specify the path to the p12 file 
    >                                                                  to pair without a trust dialog. Specify the password either with the argument or
@@ -65,5 +68,4 @@ The commands work as following:
    ios reboot [options]                                               Reboot the given device
    ios -h | --help                                                    Prints this screen.
    ios --version | version [options]                                  Prints the version
-
 ```

ios/diagnostics/diagnostics.go

@@ -57,6 +57,23 @@ func (diagnosticsConn *Connection) Reboot() error {
 	return fmt.Errorf("Could not reboot, response: %+v", plist)
 }
 
+func (diagnosticsConn *Connection) MobileGestaltQuery(keys []string) (interface{}, error) {
+	err := diagnosticsConn.deviceConn.Send(gestaltRequest(keys))
+	if err != nil {
+		return "", err
+	}
+	respBytes, err := diagnosticsConn.plistCodec.Decode(diagnosticsConn.deviceConn.Reader())
+	if err != nil {
+		return "", err
+	}
+	err = diagnosticsConn.deviceConn.Send(goodBye())
+	if err != nil {
+		return "", err
+	}
+	plist, err := ios.ParsePlist(respBytes)
+	return plist, err
+}
+
 func (diagnosticsConn *Connection) AllValues() (allDiagnosticsResponse, error) {
 	allReq := diagnosticsRequest{"All"}
 	reader := diagnosticsConn.deviceConn.Reader()

ios/diagnostics/request.go

@@ -2,6 +2,7 @@ package diagnostics
 
 import (
 	"bytes"
+	"github.com/danielpaulus/go-ios/ios"
 
 	plist "howett.net/plist"
 )
@@ -10,22 +11,27 @@ type diagnosticsRequest struct {
 	Request string
 }
 
-type diagnosticsStatus struct {
-	Status string
+func gestaltRequest(keys []string) []byte {
+	goodbyeMap := map[string]interface{}{
+		"Request":           "MobileGestalt",
+		"MobileGestaltKeys": keys,
+	}
+	bt, err := ios.PlistCodec{}.Encode(goodbyeMap)
+	if err != nil {
+		panic("gestalt request encoding should never fail")
+	}
+	return bt
 }
 
-func diagnosticsStatusfromBytes(plistBytes []byte) diagnosticsStatus {
-	decoder := plist.NewDecoder(bytes.NewReader(plistBytes))
-	var data diagnosticsStatus
-	_ = decoder.Decode(&data)
-	return data
-}
-
-func diagnosticsRequestfromBytes(plistBytes []byte) diagnosticsRequest {
-	decoder := plist.NewDecoder(bytes.NewReader(plistBytes))
-	var data diagnosticsRequest
-	_ = decoder.Decode(&data)
-	return data
+func goodBye() []byte {
+	goodbyeMap := map[string]interface{}{
+		"Request": "Goodbye",
+	}
+	bt, err := ios.PlistCodec{}.Encode(goodbyeMap)
+	if err != nil {
+		panic("goodbye request encoding should never fail")
+	}
+	return bt
 }
 
 func diagnosticsfromBytes(plistBytes []byte) allDiagnosticsResponse {

main.go

@@ -61,6 +61,7 @@ Usage:
   ios devicestate list [options]
   ios devicestate enable <profileTypeId> <profileId> [options]
   ios lang [--setlocale=<locale>] [--setlang=<newlang>] [options]
+  ios mobilegestalt <key>... [--plist] [options]
   ios diagnostics list [options]
   ios pair [--p12file=<orgid>] [--password=<p12password>] [options]
   ios ps [options]
@@ -106,6 +107,9 @@ The commands work as following:
    ios devicestate enable <profileTypeId> <profileId> [options]       Enables a profile with ids (use the list command to see options). It will only stay active until the process is terminated.
    >                                                                  Ex. "ios devicestate enable SlowNetworkCondition SlowNetwork3GGood"
    ios lang [--setlocale=<locale>] [--setlang=<newlang>] [options]    Sets or gets the Device language
+   ios mobilegestalt <key>... [--plist] [options]                     Lets you query mobilegestalt keys. Standard output is json but if desired you can get
+   >                                                                  it in plist format by adding the --plist param. 
+   >                                                                  Ex.: "ios mobilegestalt MainScreenCanvasSizes ArtworkTraits --plist"
    ios diagnostics list [options]                                     List diagnostic infos
    ios pair [--p12file=<orgid>] [--password=<p12password>] [options]  Pairs the device. If the device is supervised, specify the path to the p12 file 
    >                                                                  to pair without a trust dialog. Specify the password either with the argument or
@@ -185,6 +189,20 @@ The commands work as following:
 	udid, _ := arguments.String("--udid")
 	device, err := ios.GetDevice(udid)
 	exitIfError("error getting devicelist", err)
+	conn, _ := diagnostics.New(device)
+	b, _ = arguments.Bool("mobilegestalt")
+	if b {
+		keys := arguments["<key>"].([]string)
+		plist, _ := arguments.Bool("--plist")
+		resp, _ := conn.MobileGestaltQuery(keys)
+		if plist {
+			fmt.Printf("%s", ios.ToPlist(resp))
+			return
+		}
+		jb, _ := json.Marshal(resp)
+		fmt.Printf("%s", jb)
+		return
+	}
 
 	if deviceStateCommand {
 		if listCommand {