mirror of
https://github.com/retspen/webvirtcloud
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0532471759
The VM page offered a lite and a full VNC console. Lite lacked a clipboard, display settings and a way to reconnect; full put noVNC's own side bar under the panel's bar, with a Fullscreen item that called a function noVNC does not have, status messages hidden behind the bar, saved noVNC settings that overrode the Access tab's, connection settings that cannot apply, and a Connect button that reused the page's two-minute token and failed. console-vnc.html and static/js/console_vnc.js replace both, on noVNC's RFB with Bootstrap controls, and keep what the full view did: - Status in the bar (Connecting, Connected, Disconnected, Connection lost, Could not connect, Authentication failed with the server's reason on hover); Disconnect, then Reconnect, which loads the page again for a new token. - The VNC password in a dialog (with a username when the server asks for one), not a browser prompt; without passwordless console it is not in the page. - Send key(s) gains Hold Ctrl / Alt / Windows (noVNC's extra keys). - Clipboard: what the VM copies, sending text to the VM's clipboard, and typing it key by key (new: works in firmware, installers and login prompts; Shift for the characters a US keyboard shifts, 25 ms a key as firmware drops faster keys, verified in a UEFI shell). - View: scaling (none, fit, resize the VM's screen), clip, drag a clipped screen, view only, dot cursor, quality, compression; it starts as Settings > Console says (a touch screen starts fitted). - A Keyboard item on touch devices (noVNC's on-screen keyboard input, key events and Android's text-only input), Fullscreen with keyboard lock, the bell. Dropped with the full view: noVNC's websocket host/port/path, repeater ID and log level (the panel fixes them), automatic reconnect (the token is single use in time), XVP power buttons (QEMU has no XVP) and shared-mode off. The bar is compact (about 45 px in the 850x600 window). The Access tab has one Console button instead of the Lite/Full split and four switches, and it and the VM list open one window per VM (opening it again reloads it).
92 lines
4.1 KiB
Python
92 lines
4.1 KiB
Python
# pylint: disable=no-name-in-module,no-member
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from appsettings.settings import app_settings
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from console import tokens
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from django.conf import settings
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from django.shortcuts import render
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from django.utils.translation import gettext_lazy as _
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from instances.models import Instance
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from instances.utils import can_open_console
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from libvirt import libvirtError
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from vrtManager.connection import CONN_TCP, CONN_TLS
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from vrtManager.instance import wvmInstance
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from vrtManager.util import is_loopback
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def console(request, compute_id, uuid):
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"""The console page of the VM with this UUID on this compute. A console
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that cannot open gets a page that says why, and no console client."""
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instance = Instance.objects.filter(compute_id=compute_id, uuid=uuid).first()
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# Same answer for "no such VM" and "not allowed", so the response
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# does not reveal whether a VM exists.
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if instance is None or not can_open_console(request.user, instance):
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console_error = _("User does not have permission to access console or host/instance not exist")
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return render(request, "console-error.html", {"console_error": console_error}, status=403)
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try:
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conn = wvmInstance(
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instance.compute.hostname,
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instance.compute.login,
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instance.compute.password,
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instance.compute.type,
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instance.name,
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uuid=instance.uuid,
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)
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console_type = conn.get_console_type()
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console_passwd = conn.get_console_passwd()
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running = conn.instance.isActive()
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# novncd reaches a console that listens on its host's loopback only
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# through SSH (or on this host); the running VM's listener, as novncd sees it
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unreachable = instance.compute.type in (CONN_TCP, CONN_TLS) and bool(
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conn.get_console_socket() or is_loopback(conn.get_console_listener_addr())
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)
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except (libvirtError, ValueError, IndexError):
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running = unreachable = False
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console_type = None
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console_passwd = None
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if console_type is None:
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console_error = _("Fail to get console. Please check the console configuration of your VM.")
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elif not running: # a shut-off VM has no console to connect to
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console_error = _("The VM is not running: start it to open its console.")
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elif console_type == "vnc" and unreachable:
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console_error = _(
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"This console listens only on its host, which the panel reaches over TCP or TLS. "
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"Let the console listen on all interfaces in the VM's console settings, "
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"or add the host as an SSH host."
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)
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elif console_type == "pty" and not settings.SERIAL_CONSOLE_ENABLED:
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console_error = _(
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"Serial console is disabled on this server. "
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"Please switch VM graphics to VNC or ask an administrator."
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)
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elif console_type not in ("vnc", "pty"):
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console_error = _(
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"Console type '%(type)s' is not supported. Please switch the VM graphics to VNC."
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) % {"type": console_type}
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else:
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console_error = None
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if console_error:
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return render(request, "console-error.html", {"instance": instance, "console_error": console_error})
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# the console daemons' credential for this page
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token = tokens.SIGNER.sign(f"{compute_id}:{uuid}:{request.user.id}")
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if console_type == "pty":
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return render(request, "console-xterm.html", {"instance": instance, "token": token})
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# how the VNC page starts (Settings > Console); its View menu changes them
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if app_settings.CONSOLE_RESIZE_SESSION == "True":
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resize = "remote"
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elif app_settings.CONSOLE_SCALE == "True":
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resize = "scale"
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else:
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resize = "off"
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vnc = {
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"token": token,
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# without the permission the VNC server asks the user for it
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"password": console_passwd if request.user.has_perm("instances.passwordless_console") else None,
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"resize": resize,
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"clip": app_settings.CONSOLE_CLIP_VIEWPORT == "True",
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"viewOnly": app_settings.CONSOLE_VIEW_ONLY == "True",
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}
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return render(request, "console-vnc.html", {"instance": instance, "vnc": vnc})
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