Source code for selenium.webdriver.firefox.firefox_binary

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import os
import time
from platform import system
from subprocess import STDOUT
from subprocess import Popen

from selenium.common.exceptions import WebDriverException
from selenium.webdriver.common import utils

[docs]class FirefoxBinary: NO_FOCUS_LIBRARY_NAME = "" def __init__(self, firefox_path=None, log_file=None): """Creates a new instance of Firefox binary. :Args: - firefox_path - Path to the Firefox executable. By default, it will be detected from the standard locations. - log_file - A file object to redirect the firefox process output to. It can be sys.stdout. Please note that with parallel run the output won't be synchronous. By default, it will be redirected to /dev/null. """ self._start_cmd = firefox_path # We used to default to subprocess.PIPE instead of /dev/null, but after # a while the pipe would fill up and Firefox would freeze. self._log_file = log_file or open(os.devnull, "wb") self.command_line = None self.platform = system().lower() if not self._start_cmd: self._start_cmd = self._get_firefox_start_cmd() if not self._start_cmd.strip(): raise WebDriverException( "Failed to find firefox binary. You can set it by specifying " "the path to 'firefox_binary':\n\nfrom " "selenium.webdriver.firefox.firefox_binary import " "FirefoxBinary\n\nbinary = " "FirefoxBinary('/path/to/binary')\ndriver = " "webdriver.Firefox(firefox_binary=binary)" ) # Rather than modifying the environment of the calling Python process # copy it and modify as needed. self._firefox_env = os.environ.copy() self._firefox_env["MOZ_CRASHREPORTER_DISABLE"] = "1" self._firefox_env["MOZ_NO_REMOTE"] = "1" self._firefox_env["NO_EM_RESTART"] = "1"
[docs] def add_command_line_options(self, *args): self.command_line = args
[docs] def launch_browser(self, profile, timeout=30): """Launches the browser for the given profile name. It is assumed the profile already exists. """ self.profile = profile self._start_from_profile_path(self.profile.path) self._wait_until_connectable(timeout=timeout)
[docs] def kill(self): """Kill the browser. This is useful when the browser is stuck. """ if self.process: self.process.kill() self.process.wait()
def _start_from_profile_path(self, path): self._firefox_env["XRE_PROFILE_PATH"] = path if self.platform == "linux": self._modify_link_library_path() command = [self._start_cmd, "-foreground"] if self.command_line: for cli in self.command_line: command.append(cli) self.process = Popen(command, stdout=self._log_file, stderr=STDOUT, env=self._firefox_env) def _wait_until_connectable(self, timeout=30): """Blocks until the extension is connectable in the firefox.""" count = 0 while not utils.is_connectable(self.profile.port): if self.process.poll(): # Browser has exited raise WebDriverException( "The browser appears to have exited " "before we could connect. If you specified a log_file in " "the FirefoxBinary constructor, check it for details." ) if count >= timeout: self.kill() raise WebDriverException( "Can't load the profile. Possible firefox version mismatch. " "You must use GeckoDriver instead for Firefox 48+. Profile " f"Dir: {self.profile.path} If you specified a log_file in the " "FirefoxBinary constructor, check it for details." ) count += 1 time.sleep(1) return True def _find_exe_in_registry(self): try: from _winreg import HKEY_CURRENT_USER from _winreg import HKEY_LOCAL_MACHINE from _winreg import OpenKey from _winreg import QueryValue except ImportError: from winreg import OpenKey, QueryValue, HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER import shlex keys = ( r"SOFTWARE\Classes\FirefoxHTML\shell\open\command", r"SOFTWARE\Classes\Applications\firefox.exe\shell\open\command", ) command = "" for path in keys: try: key = OpenKey(HKEY_LOCAL_MACHINE, path) command = QueryValue(key, "") break except OSError: try: key = OpenKey(HKEY_CURRENT_USER, path) command = QueryValue(key, "") break except OSError: pass else: return "" if not command: return "" return shlex.split(command)[0] def _get_firefox_start_cmd(self): """Return the command to start firefox.""" start_cmd = "" if self.platform == "darwin": # small darwin due to lower() in self.platform ffname = "firefox" start_cmd = self.which(ffname) # use hardcoded path if nothing else was found by which() if not start_cmd: start_cmd = "/Applications/" # fallback to homebrew installation for mac users if not os.path.exists(start_cmd): start_cmd = os.path.expanduser("~") + start_cmd elif self.platform == "windows": # same start_cmd = self._find_exe_in_registry() or self._default_windows_location() elif self.platform == "java" and == "nt": start_cmd = self._default_windows_location() else: for ffname in ["firefox", "iceweasel"]: start_cmd = self.which(ffname) if start_cmd: break else: # couldn't find firefox on the system path raise RuntimeError( "Could not find firefox in your system PATH." " Please specify the firefox binary location or install firefox" ) return start_cmd def _default_windows_location(self): program_files = [ os.getenv("PROGRAMFILES", r"C:\Program Files"), os.getenv("PROGRAMFILES(X86)", r"C:\Program Files (x86)"), ] for path in program_files: binary_path = os.path.join(path, r"Mozilla Firefox\firefox.exe") if os.access(binary_path, os.X_OK): return binary_path return "" def _modify_link_library_path(self): existing_ld_lib_path = os.environ.get("LD_LIBRARY_PATH", "") new_ld_lib_path = self._extract_and_check(self.profile, "x86", "amd64") new_ld_lib_path += existing_ld_lib_path self._firefox_env["LD_LIBRARY_PATH"] = new_ld_lib_path self._firefox_env["LD_PRELOAD"] = self.NO_FOCUS_LIBRARY_NAME def _extract_and_check(self, profile, x86, amd64): paths = [x86, amd64] built_path = "" for path in paths: library_path = os.path.join(profile.path, path) if not os.path.exists(library_path): os.makedirs(library_path) import shutil shutil.copy(os.path.join(os.path.dirname(__file__), path, self.NO_FOCUS_LIBRARY_NAME), library_path) built_path += library_path + ":" return built_path
[docs] def which(self, fname): """Returns the fully qualified path by searching Path of the given name.""" for pe in os.environ["PATH"].split(os.pathsep): checkname = os.path.join(pe, fname) if os.access(checkname, os.X_OK) and not os.path.isdir(checkname): return checkname return None