commit 688f321287f5e9c53451dd91608dc3aa5088a621 Author: Damian Johnson atagar@torproject.org Date: Sun May 20 15:05:10 2012 -0700

Disabling launch_tor timeout when on windows

On windows the python signal module lacks a SIGALRM attribute, breaking launch_tor. Disabling timeouts on windows to avoid this issue - ideally we should find an alternative method for timeing out the function on windows but that can wait.

Caught by pythonirc101. Issue is discussed on... https://trac.torproject.org/projects/tor/ticket/5783 --- stem/process.py | 8 ++++++++ stem/util/system.py | 14 ++++++++++++-- 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/stem/process.py b/stem/process.py index a65c124..e004faf 100644 --- a/stem/process.py +++ b/stem/process.py @@ -11,6 +11,8 @@ import signal import tempfile import subprocess

+import stem.util.system + # number of seconds before we time out our attempt to start a tor instance DEFAULT_INIT_TIMEOUT = 90

@@ -29,6 +31,9 @@ def launch_tor(tor_cmd = "tor", args = None, torrc_path = None, completion_perce while. Usually this is done in 50 seconds or so, but occasionally calls seem to get stuck, taking well over the default timeout.

+ Our timeout argument does not work on Windows... + https://trac.torproject.org/projects/tor/ticket/5783 + Arguments: tor_cmd (str) - command for starting tor args (list) - additional arguments for tor @@ -48,6 +53,9 @@ def launch_tor(tor_cmd = "tor", args = None, torrc_path = None, completion_perce without success """

+ if stem.util.system.is_windows(): + timeout = None + # double check that we have a torrc to work with if not torrc_path in (None, NO_TORRC) and not os.path.exists(torrc_path): raise OSError("torrc doesn't exist (%s)" % torrc_path) diff --git a/stem/util/system.py b/stem/util/system.py index 6ecc0aa..a4ba186 100644 --- a/stem/util/system.py +++ b/stem/util/system.py @@ -44,13 +44,23 @@ GET_CWD_PWDX = "pwdx %s" GET_CWD_LSOF = "lsof -a -p %s -d cwd -Fn" GET_BSD_JAIL_ID_PS = "ps -p %s -o jid"

+def is_windows(): + """ + Checks if we are running on Windows. + + Returns: + bool to indicate if we're on Windows + """ + + return platform.system() == "Windows" + def is_bsd(): """ Checks if we are within the BSD family of operating systems. This presently recognizes Macs, FreeBSD, and OpenBSD but may be expanded later.

Returns: - bool to indicate if we're a BSD OS + bool to indicate if we're on a BSD OS """

return platform.system() in ("Darwin", "FreeBSD", "OpenBSD") @@ -78,7 +88,7 @@ def is_available(command, cached=True): cmd_exists = False for path in os.environ["PATH"].split(os.pathsep): cmd_path = os.path.join(path, command) - if platform.system() == "Windows": cmd_path += ".exe" + if is_windows(): cmd_path += ".exe"

if os.path.exists(cmd_path) and os.access(cmd_path, os.X_OK): cmd_exists = True