Add screen size and window position

Author: bkrumnow

README.md

@@ -32,21 +32,22 @@ OpenWPM<sub>hide</sub> introduces two new parameters to the BrowserParams object
 Using both parameters works as follows:
 
 ```javascript
-NUM_BROWSERS = 2
-browser_params = [BrowserParams(display_mode="native") for _ in range(NUM_BROWSERS)]
-for browser_param in browser_params:
-  browser_param.resolution = (1520, 630)
-  browser_param.position = (50, 100)
+from hide_commands import (SetResolution, SetPosition)
+...
+command_sequence = CommandSequence(...)
+
+command_sequence.append_command(SetResolution(width=1600, height=800), timeout=10)
+command_sequence.append_command(SetPosition(x=50, y=200), timeout=10)
 ```
 
 ### Hardened JavaScript instrument
 Set _stealth_js_instrument_ to _True_ to activate the hardened version (similar as above):
 
 ```javascript
- NUM_BROWSERS = 2
- browser_params = [BrowserParams(display_mode="native") for _ in range(NUM_BROWSERS)]
- for browser_param in browser_params:
- browser_param.stealth_js_instrument = True
+NUM_BROWSERS = 2
+browser_params = [BrowserParams(display_mode="native") for _ in range(NUM_BROWSERS)]
+for browser_param in browser_params:
+  browser_param.stealth_js_instrument = True
 ```
 
 Use the [settings.js](https://github.com/bkrumnow/OpenWPM/blob/stealth_extension/Extension/firefox/stealth.js/settings.js) file to

hide_commands/__init__.py

@@ -0,0 +1 @@
+from .commands import (SetResolution, SetPosition)

hide_commands/commands.py

@@ -0,0 +1,73 @@
+""" This file aims to demonstrate how to write custom commands in OpenWPM
+
+Steps to have a custom command run as part of a CommandSequence
+
+1. Create a class that derives from BaseCommand
+2. Implement the execute method
+3. Append it to the CommandSequence
+4. Execute the CommandSequence
+
+"""
+import logging
+
+from tkinter import ttk
+
+from openwpm.commands.types import BaseCommand
+from openwpm.config import BrowserParams, ManagerParams
+from openwpm.socket_interface import ClientSocket
+
+from selenium.webdriver import Firefox
+
+
+def get_screen_resolution(driver):
+    return driver.execute_script("return [screen.width, screen.height];")
+    
+
+class SetResolution(BaseCommand):
+    """ Sets the browser window resolution """
+    def __init__(self, width, height) -> None:
+        self.logger = logging.getLogger("openwpm")
+        self.width = width
+        self.height = height
+
+    def __repr__(self) -> str:
+        return "SetResolution"
+
+    def execute(
+        self,
+        driver: Firefox,
+        browser_params: BrowserParams,
+        manager_params: ManagerParams,
+        extension_socket: ClientSocket,
+        ):
+                
+        self.logger.info(f"Setting window resolution to {self.width} x {self.height} ")
+        driver.set_window_size(self.width, self.height)
+        
+        resolution = get_screen_resolution(driver)
+        if resolution[0] <= self.width or resolution[1] <= self.height:
+            self.logger.warn(
+            f"Browser window resolution ({self.width} x {self.height}) exceeds " +
+            f"screen resolution ({resolution[0]} x {resolution[1]})")
+        
+        
+
+class SetPosition(BaseCommand):
+    """ Sets the browser window position """
+    def __init__(self, x, y) -> None:
+        self.logger = logging.getLogger("openwpm")
+        self.x = x
+        self.y = y
+
+    def __repr__(self) -> str:
+        return "SetPosition"
+
+    def execute(
+        self,
+        driver: Firefox,
+        browser_params: BrowserParams,
+        manager_params: ManagerParams,
+        extension_socket: ClientSocket,
+        ):
+        
+        driver.set_window_position(self.x, self.y, windowHandle='current')