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DistUpgrade
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DistUpgradeViewNonInteractive.py
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# DistUpgradeView.py # # Copyright (c) 2004,2005 Canonical # # Author: Michael Vogt <michael.vogt@ubuntu.com> # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License as # published by the Free Software Foundation; either version 2 of the # License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 # USA import apt import apt_pkg import logging import locale import time import sys import os import pty import select import subprocess import copy import apt.progress from configparser import NoSectionError, NoOptionError from subprocess import PIPE, Popen from .DistUpgradeView import DistUpgradeView, InstallProgress, AcquireProgress from .telemetry import get as get_telemetry from .DistUpgradeConfigParser import DistUpgradeConfig class NonInteractiveAcquireProgress(AcquireProgress): def update_status(self, uri, descr, shortDescr, status): AcquireProgress.update_status(self, uri, descr, shortDescr, status) #logging.debug("Fetch: updateStatus %s %s" % (uri, status)) if status == apt_pkg.STAT_DONE: print("fetched %s (%.2f/100) at %sb/s" % ( uri, self.percent, apt_pkg.size_to_str(int(self.current_cps)))) if sys.stdout.isatty(): sys.stdout.flush() class NonInteractiveInstallProgress(InstallProgress): """ Non-interactive version of the install progress class This ensures that conffile prompts are handled and that hanging scripts are killed after a (long) timeout via ctrl-c """ def __init__(self, logdir): InstallProgress.__init__(self) logging.debug("setting up environ for non-interactive use") if "DEBIAN_FRONTEND" not in os.environ: os.environ["DEBIAN_FRONTEND"] = "noninteractive" os.environ["APT_LISTCHANGES_FRONTEND"] = "none" os.environ["RELEASE_UPRADER_NO_APPORT"] = "1" self.config = DistUpgradeConfig(".") self.logdir = logdir self.install_run_number = 0 try: if self.config.getWithDefault("NonInteractive","ForceOverwrite", False): apt_pkg.config.set("DPkg::Options::","--force-overwrite") except (NoSectionError, NoOptionError): pass # more debug #apt_pkg.config.set("Debug::pkgOrderList","true") #apt_pkg.config.set("Debug::pkgDPkgPM","true") # default to 2400 sec timeout self.timeout = 2400 try: self.timeout = self.config.getint("NonInteractive","TerminalTimeout") except Exception: pass def error(self, pkg, errormsg): logging.error("got a error from dpkg for pkg: '%s': '%s'" % (pkg, errormsg)) # check if re-run of maintainer script is requested if not self.config.getWithDefault( "NonInteractive","DebugBrokenScripts", False): return # re-run maintainer script with sh -x/perl debug to get a better # idea what went wrong # # FIXME: this is just a approximation for now, we also need # to pass: # - a version after remove (if upgrade to new version) # # not everything is a shell or perl script # # if the new preinst fails, its not yet in /var/lib/dpkg/info # so this is inaccurate as well environ = copy.copy(os.environ) environ["PYCENTRAL"] = "debug" cmd = [] # find what maintainer script failed if "post-installation" in errormsg: prefix = "/var/lib/dpkg/info/" name = "postinst" argument = "configure" maintainer_script = "%s/%s.%s" % (prefix, pkg, name) elif "pre-installation" in errormsg: prefix = "/var/lib/dpkg/tmp.ci/" #prefix = "/var/lib/dpkg/info/" name = "preinst" argument = "install" maintainer_script = "%s/%s" % (prefix, name) elif "pre-removal" in errormsg: prefix = "/var/lib/dpkg/info/" name = "prerm" argument = "remove" maintainer_script = "%s/%s.%s" % (prefix, pkg, name) elif "post-removal" in errormsg: prefix = "/var/lib/dpkg/info/" name = "postrm" argument = "remove" maintainer_script = "%s/%s.%s" % (prefix, pkg, name) else: print("UNKNOWN (trigger?) dpkg/script failure for %s (%s) " % (pkg, errormsg)) return # find out about the interpreter if not os.path.exists(maintainer_script): logging.error("can not find failed maintainer script '%s' " % maintainer_script) return with open(maintainer_script) as f: interp = f.readline()[2:].strip().split()[0] if ("bash" in interp) or ("/bin/sh" in interp): debug_opts = ["-ex"] elif ("perl" in interp): debug_opts = ["-d"] environ["PERLDB_OPTS"] = "AutoTrace NonStop" else: logging.warning("unknown interpreter: '%s'" % interp) # check if debconf is used and fiddle a bit more if it is with open(maintainer_script) as f: maintainer_script_text = f.read() if ". /usr/share/debconf/confmodule" in maintainer_script_text: environ["DEBCONF_DEBUG"] = "developer" environ["DEBIAN_HAS_FRONTEND"] = "1" interp = "/usr/share/debconf/frontend" debug_opts = ["sh","-ex"] # build command cmd.append(interp) cmd.extend(debug_opts) cmd.append(maintainer_script) cmd.append(argument) # check if we need to pass a version if name == "postinst": version = Popen("dpkg-query -s %s|grep ^Config-Version" % pkg, shell=True, stdout=PIPE, universal_newlines=True).communicate()[0] if version: cmd.append(version.split(":",1)[1].strip()) elif name == "preinst": pkg = os.path.basename(pkg) pkg = pkg.split("_")[0] version = Popen("dpkg-query -s %s|grep ^Version" % pkg, shell=True, stdout=PIPE, universal_newlines=True).communicate()[0] if version: cmd.append(version.split(":",1)[1].strip()) logging.debug("re-running '%s' (%s)" % (cmd, environ)) ret = subprocess.call(cmd, env=environ) logging.debug("%s script returned: %s" % (name,ret)) def conffile(self, current, new): logging.warning("got a conffile-prompt from dpkg for file: '%s'" % current) # looks like we have a race here *sometimes* time.sleep(5) try: # don't overwrite os.write(self.master_fd, b"n\n") logging.warning("replied no to the conffile-prompt for file: '%s'" % current) except Exception as e: logging.error("error '%s' when trying to write to the conffile"%e) def start_update(self): InstallProgress.start_update(self) self.last_activity = time.time() progress_log = self.config.getWithDefault("NonInteractive","DpkgProgressLog", False) if progress_log: fullpath = os.path.join(self.logdir, "dpkg-progress.%s.log" % self.install_run_number) logging.debug("writing dpkg progress log to '%s'" % fullpath) self.dpkg_progress_log = open(fullpath, "w") else: self.dpkg_progress_log = open(os.devnull, "w") self.dpkg_progress_log.write("%s: Start\n" % time.time()) def finish_update(self): InstallProgress.finish_update(self) self.dpkg_progress_log.write("%s: Finished\n" % time.time()) self.dpkg_progress_log.close() self.install_run_number += 1 def status_change(self, pkg, percent, status_str): self.dpkg_progress_log.write("%s:%s:%s:%s\n" % (time.time(), percent, pkg, status_str)) def update_interface(self): InstallProgress.update_interface(self) if self.statusfd == None: return if (self.last_activity + self.timeout) < time.time(): logging.warning("no activity %s seconds (%s) - sending ctrl-c" % ( self.timeout, self.status)) # ctrl-c os.write(self.master_fd,chr(3)) # read master fd and write to stdout so that terminal output # actualy works res = select.select([self.master_fd],[],[],0.1) while len(res[0]) > 0: self.last_activity = time.time() try: s = os.read(self.master_fd, 1) sys.stdout.write("%s" % s.decode( locale.getpreferredencoding(), errors='ignore')) except OSError: # happens after we are finished because the fd is closed return res = select.select([self.master_fd],[],[],0.1) sys.stdout.flush() def fork(self): logging.debug("doing a pty.fork()") # some maintainer scripts fail without os.environ["TERM"] = "dumb" # unset PAGER so that we can do "diff" in the dpkg prompt os.environ["PAGER"] = "true" (self.pid, self.master_fd) = pty.fork() if self.pid != 0: logging.debug("pid is: %s" % self.pid) return self.pid class DistUpgradeViewNonInteractive(DistUpgradeView): " non-interactive version of the upgrade view " def __init__(self, datadir=None, logdir=None): DistUpgradeView.__init__(self) get_telemetry().set_updater_type('NonInteractive') self.config = DistUpgradeConfig(".") self._acquireProgress = NonInteractiveAcquireProgress() self._installProgress = NonInteractiveInstallProgress(logdir) self._opProgress = apt.progress.base.OpProgress() sys.__excepthook__ = self.excepthook def excepthook(self, type, value, tb): " on uncaught exceptions -> print error and reboot " import traceback logging.exception("got exception '%s': %s " % (type, value)) lines = traceback.format_exception(type, value, tb) logging.error("not handled exception:\n%s" % "".join(lines)) #sys.excepthook(type, value, tb) self.confirmRestart() def getOpCacheProgress(self): " return a OpProgress() subclass for the given graphic" return self._opProgress def getAcquireProgress(self): " return an acquire progress object " return self._acquireProgress def getInstallProgress(self, cache=None): " return a install progress object " return self._installProgress def updateStatus(self, msg): """ update the current status of the distUpgrade based on the current view """ pass def setStep(self, step): """ we have 5 steps current for a upgrade: 1. Analyzing the system 2. Updating repository information 3. Performing the upgrade 4. Post upgrade stuff 5. Complete """ super(DistUpgradeViewNonInteractive, self).setStep(step) pass def confirmChanges(self, summary, changes, demotions, downloadSize, actions=None, removal_bold=True): DistUpgradeView.confirmChanges(self, summary, changes, demotions, downloadSize, actions) logging.debug("toinstall: '%s'" % [p.name for p in self.toInstall]) logging.debug("toupgrade: '%s'" % [p.name for p in self.toUpgrade]) logging.debug("toremove: '%s'" % [p.name for p in self.toRemove]) return True def askYesNoQuestion(self, summary, msg, default='No'): " ask a Yes/No question and return True on 'Yes' " # if this gets enabled upgrades over ssh with the non-interactive # frontend will no longer work #if default.lower() == "no": # return False return True def askCancelContinueQuestion(self, summary, msg, default='Cancel'): return True def confirmRestart(self): " generic ask about the restart, can be overridden " logging.debug("confirmRestart() called") # rebooting here makes sense if we run e.g. in qemu return self.config.getWithDefault("NonInteractive","RealReboot", False) def error(self, summary, msg, extended_msg=None): " display a error " logging.error("%s %s (%s)" % (summary, msg, extended_msg)) def abort(self): logging.error("view.abort called") if __name__ == "__main__": view = DistUpgradeViewNonInteractive() ap = NonInteractiveAcquireProgress() ip = NonInteractiveInstallProgress() #ip.error("linux-image-2.6.17-10-generic","post-installation script failed") ip.error("xserver-xorg","pre-installation script failed") cache = apt.Cache() for pkg in sys.argv[1:]: #if cache[pkg].is_installed: # cache[pkg].mark_delete() #else: cache[pkg].mark_install() cache.commit(ap, ip) time.sleep(2) sys.exit(0)