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Tue, 20 Oct 2020 17:28:09 +0000 (UTC) Received: from scv.redhat.com (ovpn-115-172.rdu2.redhat.com [10.10.115.172]) by smtp.corp.redhat.com (Postfix) with ESMTP id 72E3F1992D; Tue, 20 Oct 2020 17:28:08 +0000 (UTC) From: John Snow To: qemu-devel@nongnu.org Subject: [PULL 17/21] python/qemu/console_socket.py: avoid encoding to/from string Date: Tue, 20 Oct 2020 13:27:38 -0400 Message-Id: <20201020172742.1483258-18-jsnow@redhat.com> In-Reply-To: <20201020172742.1483258-1-jsnow@redhat.com> References: <20201020172742.1483258-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jsnow@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=jsnow@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/20 01:16:16 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Maydell , Eduardo Habkost , qemu-block@nongnu.org, Max Reitz , Cleber Rosa , John Snow Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We can work directly in bytes instead of translating back and forth to string, which removes the question of which encodings to use. Signed-off-by: John Snow Reviewed-by: Kevin Wolf Message-id: 20201006235817.3280413-17-jsnow@redhat.com Signed-off-by: John Snow --- python/qemu/console_socket.py | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/python/qemu/console_socket.py b/python/qemu/console_socket.py index 57e6eee017..f060d79e06 100644 --- a/python/qemu/console_socket.py +++ b/python/qemu/console_socket.py @@ -34,12 +34,12 @@ def __init__(self, address: str, file: Optional[str] = None, drain: bool = False): self._recv_timeout_sec = 300.0 self._sleep_time = 0.5 - self._buffer: Deque[str] = deque() + self._buffer: Deque[int] = deque() socket.socket.__init__(self, socket.AF_UNIX, socket.SOCK_STREAM) self.connect(address) self._logfile = None if file: - self._logfile = open(file, "w") + self._logfile = open(file, "bw") self._open = True self._drain_thread = None if drain: @@ -83,15 +83,10 @@ def close(self) -> None: def _drain_socket(self) -> None: """process arriving characters into in memory _buffer""" data = socket.socket.recv(self, 1) - # latin1 is needed since there are some chars - # we are receiving that cannot be encoded to utf-8 - # such as 0xe2, 0x80, 0xA6. - string = data.decode("latin1") if self._logfile: - self._logfile.write("{}".format(string)) + self._logfile.write(data) self._logfile.flush() - for c in string: - self._buffer.extend(c) + self._buffer.extend(data) def recv(self, bufsize: int = 1, flags: int = 0) -> bytes: """Return chars from in memory buffer. @@ -107,12 +102,7 @@ def recv(self, bufsize: int = 1, flags: int = 0) -> bytes: elapsed_sec = time.time() - start_time if elapsed_sec > self._recv_timeout_sec: raise socket.timeout - chars = ''.join([self._buffer.popleft() for i in range(bufsize)]) - # We choose to use latin1 to remain consistent with - # handle_read() and give back the same data as the user would - # receive if they were reading directly from the - # socket w/o our intervention. - return chars.encode("latin1") + return bytes((self._buffer.popleft() for i in range(bufsize))) def setblocking(self, value: bool) -> None: """When not draining we pass thru to the socket,