autorandr.py

   1 #!/usr/bin/env python
   2 # encoding: utf-8
   3 #
   4 # autorandr.py
   5 # Copyright (c) 2015, Phillip Berndt
   6 #
   7 # Autorandr rewrite in Python
   8 #
   9 # This script aims to be fully compatible with the original autorandr.
  10 #
  11 # This program is free software: you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation, either version 3 of the License, or
  14 # (at your option) any later version.
  15 #
  16 # This program is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program. If not, see <http://www.gnu.org/licenses/>.
  23 #
  24
  25 from __future__ import print_function
  26
  27 import binascii
  28 import copy
  29 import fnmatch
  30 import getopt
  31 import hashlib
  32 import os
  33 import posix
  34 import pwd
  35 import re
  36 import subprocess
  37 import sys
  38 import shutil
  39 import time
  40
  41 from collections import OrderedDict
  42 from distutils.version import LooseVersion as Version
  43 from functools import reduce
  44 from itertools import chain
  45
  46 if sys.version_info.major == 2:
  47     import ConfigParser as configparser
  48 else:
  49     import configparser
  50
  51 __version__ = "1.6"
  52
  53 try:
  54     input = raw_input
  55 except NameError:
  56     pass
  57
  58 virtual_profiles = [
  59     # (name, description, callback)
  60     ("off", "Disable all outputs", None),
  61     ("common", "Clone all connected outputs at the largest common resolution", None),
  62     ("clone-largest", "Clone all connected outputs with the largest resolution (scaled down if necessary)", None),
  63     ("horizontal", "Stack all connected outputs horizontally at their largest resolution", None),
  64     ("vertical", "Stack all connected outputs vertically at their largest resolution", None),
  65 ]
  66
  67 help_text = """
  68 Usage: autorandr [options]
  69
  70 -h, --help              get this small help
  71 -c, --change            automatically load the first detected profile
  72 -d, --default <profile> make profile <profile> the default profile
  73 -l, --load <profile>    load profile <profile>
  74 -s, --save <profile>    save your current setup to profile <profile>
  75 -r, --remove <profile>  remove profile <profile>
  76 --batch                 run autorandr for all users with active X11 sessions
  77 --current               only list current (active) configuration(s)
  78 --config                dump your current xrandr setup
  79 --debug                 enable verbose output
  80 --detected              only list detected (available) configuration(s)
  81 --dry-run               don't change anything, only print the xrandr commands
  82 --fingerprint           fingerprint your current hardware setup
  83 --force                 force (re)loading of a profile
  84 --skip-options <option> comma separated list of xrandr arguments (e.g. "gamma")
  85                         to skip both in detecting changes and applying a profile
  86 --version               show version information and exit
  87
  88  If no suitable profile can be identified, the current configuration is kept.
  89  To change this behaviour and switch to a fallback configuration, specify
  90  --default <profile>.
  91
  92  autorandr supports a set of per-profile and global hooks. See the documentation
  93  for details.
  94
  95  The following virtual configurations are available:
  96 """.strip()
  97
  98
  99 class AutorandrException(Exception):
 100     def __init__(self, message, original_exception=None, report_bug=False):
 101         self.message = message
 102         self.report_bug = report_bug
 103         if original_exception:
 104             self.original_exception = original_exception
 105             trace = sys.exc_info()[2]
 106             while trace.tb_next:
 107                 trace = trace.tb_next
 108             self.line = trace.tb_lineno
 109             self.file_name = trace.tb_frame.f_code.co_filename
 110         else:
 111             try:
 112                 import inspect
 113                 frame = inspect.currentframe().f_back
 114                 self.line = frame.f_lineno
 115                 self.file_name = frame.f_code.co_filename
 116             except:
 117                 self.line = None
 118                 self.file_name = None
 119             self.original_exception = None
 120
 121         if os.path.abspath(self.file_name) == os.path.abspath(sys.argv[0]):
 122             self.file_name = None
 123
 124     def __str__(self):
 125         retval = [self.message]
 126         if self.line:
 127             retval.append(" (line %d%s)" % (self.line, ("; %s" % self.file_name) if self.file_name else ""))
 128         if self.original_exception:
 129             retval.append(":\n  ")
 130             retval.append(str(self.original_exception).replace("\n", "\n  "))
 131         if self.report_bug:
 132             retval.append("\nThis appears to be a bug. Please help improving autorandr by reporting it upstream:"
 133                           "\nhttps://github.com/phillipberndt/autorandr/issues"
 134                           "\nPlease attach the output of `xrandr --verbose` to your bug report if appropriate.")
 135         return "".join(retval)
 136
 137
 138 class XrandrOutput(object):
 139     "Represents an XRandR output"
 140
 141     # This regular expression is used to parse an output in `xrandr --verbose'
 142     XRANDR_OUTPUT_REGEXP = """(?x)
 143         ^(?P<output>[^ ]+)\s+                                                           # Line starts with output name
 144         (?:                                                                             # Differentiate disconnected and connected
 145             disconnected |                                                              # in first line
 146             unknown\ connection |
 147             (?P<connected>connected)
 148         )
 149         \s*
 150         (?P<primary>primary\ )?                                                         # Might be primary screen
 151         (?:\s*
 152             (?P<width>[0-9]+)x(?P<height>[0-9]+)                                        # Resolution (might be overridden below!)
 153             \+(?P<x>-?[0-9]+)\+(?P<y>-?[0-9]+)\s+                                       # Position
 154             (?:\(0x[0-9a-fA-F]+\)\s+)?                                                  # XID
 155             (?P<rotate>(?:normal|left|right|inverted))\s+                               # Rotation
 156             (?:(?P<reflect>X\ and\ Y|X|Y)\ axis)?                                       # Reflection
 157         )?                                                                              # .. but only if the screen is in use.
 158         (?:[\ \t]*\([^\)]+\))(?:\s*[0-9]+mm\sx\s[0-9]+mm)?
 159         (?:[\ \t]*panning\ (?P<panning>[0-9]+x[0-9]+\+[0-9]+\+[0-9]+))?                 # Panning information
 160         (?:[\ \t]*tracking\ (?P<tracking>[0-9]+x[0-9]+\+[0-9]+\+[0-9]+))?               # Tracking information
 161         (?:[\ \t]*border\ (?P<border>(?:[0-9]+/){3}[0-9]+))?                            # Border information
 162         (?:\s*(?:                                                                       # Properties of the output
 163             Gamma: (?P<gamma>(?:inf|[0-9\.: e])+) |                                     # Gamma value
 164             Transform: (?P<transform>(?:[\-0-9\. ]+\s+){3}) |                           # Transformation matrix
 165             EDID: (?P<edid>\s*?(?:\\n\\t\\t[0-9a-f]+)+) |                               # EDID of the output
 166             (?![0-9])[^:\s][^:\n]+:.*(?:\s\\t[\\t ].+)*                                 # Other properties
 167         ))+
 168         \s*
 169         (?P<modes>(?:
 170             (?P<mode_name>\S+).+?\*current.*\s+                                         # Interesting (current) resolution:
 171              h:\s+width\s+(?P<mode_width>[0-9]+).+\s+                                   # Extract rate
 172              v:\s+height\s+(?P<mode_height>[0-9]+).+clock\s+(?P<rate>[0-9\.]+)Hz\s* |
 173             \S+(?:(?!\*current).)+\s+h:.+\s+v:.+\s*                                     # Other resolutions
 174         )*)
 175     """
 176
 177     XRANDR_OUTPUT_MODES_REGEXP = """(?x)
 178         (?P<name>\S+).+?(?P<preferred>\+preferred)?\s+
 179          h:\s+width\s+(?P<width>[0-9]+).+\s+
 180          v:\s+height\s+(?P<height>[0-9]+).+clock\s+(?P<rate>[0-9\.]+)Hz\s* |
 181     """
 182
 183     XRANDR_13_DEFAULTS = {
 184         "transform": "1,0,0,0,1,0,0,0,1",
 185         "panning": "0x0",
 186     }
 187
 188     XRANDR_12_DEFAULTS = {
 189         "reflect": "normal",
 190         "rotate": "normal",
 191         "gamma": "1.0:1.0:1.0",
 192     }
 193
 194     XRANDR_DEFAULTS = dict(list(XRANDR_13_DEFAULTS.items()) + list(XRANDR_12_DEFAULTS.items()))
 195
 196     EDID_UNAVAILABLE = "--CONNECTED-BUT-EDID-UNAVAILABLE-"
 197
 198     def __repr__(self):
 199         return "<%s%s %s>" % (self.output, self.short_edid, " ".join(self.option_vector))
 200
 201     @property
 202     def short_edid(self):
 203         return ("%s..%s" % (self.edid[:5], self.edid[-5:])) if self.edid else ""
 204
 205     @property
 206     def options_with_defaults(self):
 207         "Return the options dictionary, augmented with the default values that weren't set"
 208         if "off" in self.options:
 209             return self.options
 210         options = {}
 211         if xrandr_version() >= Version("1.3"):
 212             options.update(self.XRANDR_13_DEFAULTS)
 213         if xrandr_version() >= Version("1.2"):
 214             options.update(self.XRANDR_12_DEFAULTS)
 215         options.update(self.options)
 216         return {a: b for a, b in options.items() if a not in self.ignored_options}
 217
 218     @property
 219     def filtered_options(self):
 220         "Return a dictionary of options without ignored options"
 221         return {a: b for a, b in self.options.items() if a not in self.ignored_options}
 222
 223     @property
 224     def option_vector(self):
 225         "Return the command line parameters for XRandR for this instance"
 226         args = ["--output", self.output]
 227         for option, arg in sorted(self.options_with_defaults.items()):
 228             args.append("--%s" % option)
 229             if arg:
 230                 args.append(arg)
 231         return args
 232
 233     @property
 234     def option_string(self):
 235         "Return the command line parameters in the configuration file format"
 236         options = ["output %s" % self.output]
 237         for option, arg in sorted(self.filtered_options.items()):
 238             if arg:
 239                 options.append("%s %s" % (option, arg))
 240             else:
 241                 options.append(option)
 242         return "\n".join(options)
 243
 244     @property
 245     def sort_key(self):
 246         "Return a key to sort the outputs for xrandr invocation"
 247         if not self.edid:
 248             return -2
 249         if "off" in self.options:
 250             return -1
 251         if "pos" in self.options:
 252             x, y = map(float, self.options["pos"].split("x"))
 253         else:
 254             x, y = 0, 0
 255         return x + 10000 * y
 256
 257     def __init__(self, output, edid, options):
 258         "Instanciate using output name, edid and a dictionary of XRandR command line parameters"
 259         self.output = output
 260         self.edid = edid
 261         self.options = options
 262         self.ignored_options = []
 263         self.remove_default_option_values()
 264
 265     def set_ignored_options(self, options):
 266         "Set a list of xrandr options that are never used (neither when comparing configurations nor when applying them)"
 267         self.ignored_options = list(options)
 268
 269     def remove_default_option_values(self):
 270         "Remove values from the options dictionary that are superflous"
 271         if "off" in self.options and len(self.options.keys()) > 1:
 272             self.options = {"off": None}
 273             return
 274         for option, default_value in self.XRANDR_DEFAULTS.items():
 275             if option in self.options and self.options[option] == default_value:
 276                 del self.options[option]
 277
 278     @classmethod
 279     def from_xrandr_output(cls, xrandr_output):
 280         """Instanciate an XrandrOutput from the output of `xrandr --verbose'
 281
 282         This method also returns a list of modes supported by the output.
 283         """
 284         try:
 285             xrandr_output = xrandr_output.replace("\r\n", "\n")
 286             match_object = re.search(XrandrOutput.XRANDR_OUTPUT_REGEXP, xrandr_output)
 287         except:
 288             raise AutorandrException("Parsing XRandR output failed, there is an error in the regular expression.",
 289                                      report_bug=True)
 290         if not match_object:
 291             debug = debug_regexp(XrandrOutput.XRANDR_OUTPUT_REGEXP, xrandr_output)
 292             raise AutorandrException("Parsing XRandR output failed, the regular expression did not match: %s" % debug,
 293                                      report_bug=True)
 294         remainder = xrandr_output[len(match_object.group(0)):]
 295         if remainder:
 296             raise AutorandrException("Parsing XRandR output failed, %d bytes left unmatched after "
 297                                      "regular expression, starting at byte %d with ..'%s'." %
 298                                      (len(remainder), len(match_object.group(0)), remainder[:10]),
 299                                      report_bug=True)
 300
 301         match = match_object.groupdict()
 302
 303         modes = []
 304         if match["modes"]:
 305             modes = []
 306             for mode_match in re.finditer(XrandrOutput.XRANDR_OUTPUT_MODES_REGEXP, match["modes"]):
 307                 if mode_match.group("name"):
 308                     modes.append(mode_match.groupdict())
 309             if not modes:
 310                 raise AutorandrException("Parsing XRandR output failed, couldn't find any display modes", report_bug=True)
 311
 312         options = {}
 313         if not match["connected"]:
 314             edid = None
 315         elif match["edid"]:
 316             edid = "".join(match["edid"].strip().split())
 317         else:
 318             edid = "%s-%s" % (XrandrOutput.EDID_UNAVAILABLE, match["output"])
 319
 320         if not match["width"]:
 321             options["off"] = None
 322         else:
 323             if match["mode_name"]:
 324                 options["mode"] = match["mode_name"]
 325             elif match["mode_width"]:
 326                 options["mode"] = "%sx%s" % (match["mode_width"], match["mode_height"])
 327             else:
 328                 if match["rotate"] not in ("left", "right"):
 329                     options["mode"] = "%sx%s" % (match["width"], match["height"])
 330                 else:
 331                     options["mode"] = "%sx%s" % (match["height"], match["width"])
 332             options["rotate"] = match["rotate"]
 333             if match["primary"]:
 334                 options["primary"] = None
 335             if match["reflect"] == "X":
 336                 options["reflect"] = "x"
 337             elif match["reflect"] == "Y":
 338                 options["reflect"] = "y"
 339             elif match["reflect"] == "X and Y":
 340                 options["reflect"] = "xy"
 341             options["pos"] = "%sx%s" % (match["x"], match["y"])
 342             if match["panning"]:
 343                 panning = [match["panning"]]
 344                 if match["tracking"]:
 345                     panning += ["/", match["tracking"]]
 346                     if match["border"]:
 347                         panning += ["/", match["border"]]
 348                 options["panning"] = "".join(panning)
 349             if match["transform"]:
 350                 transformation = ",".join(match["transform"].strip().split())
 351                 if transformation != "1.000000,0.000000,0.000000,0.000000,1.000000,0.000000,0.000000,0.000000,1.000000":
 352                     options["transform"] = transformation
 353                     if not match["mode_name"]:
 354                         # TODO We'd need to apply the reverse transformation here. Let's see if someone complains,
 355                         # I doubt that this special case is actually required.
 356                         print("Warning: Output %s has a transformation applied. Could not determine correct mode! "
 357                               "Using `%s'." % (match["output"], options["mode"]), file=sys.stderr)
 358             if match["gamma"]:
 359                 gamma = match["gamma"].strip()
 360                 # xrandr prints different values in --verbose than it accepts as a parameter value for --gamma
 361                 # Also, it is not able to work with non-standard gamma ramps. Finally, it auto-corrects 0 to 1,
 362                 # so we approximate by 1e-10.
 363                 gamma = ":".join([str(max(1e-10, round(1. / float(x), 3))) for x in gamma.split(":")])
 364                 options["gamma"] = gamma
 365             if match["rate"]:
 366                 options["rate"] = match["rate"]
 367
 368         return XrandrOutput(match["output"], edid, options), modes
 369
 370     @classmethod
 371     def from_config_file(cls, edid_map, configuration):
 372         "Instanciate an XrandrOutput from the contents of a configuration file"
 373         options = {}
 374         for line in configuration.split("\n"):
 375             if line:
 376                 line = line.split(None, 1)
 377                 if line and line[0].startswith("#"):
 378                     continue
 379                 options[line[0]] = line[1] if len(line) > 1 else None
 380
 381         edid = None
 382
 383         if options["output"] in edid_map:
 384             edid = edid_map[options["output"]]
 385         else:
 386             # This fuzzy matching is for legacy autorandr that used sysfs output names
 387             fuzzy_edid_map = [re.sub("(card[0-9]+|-)", "", x) for x in edid_map.keys()]
 388             fuzzy_output = re.sub("(card[0-9]+|-)", "", options["output"])
 389             if fuzzy_output in fuzzy_edid_map:
 390                 edid = edid_map[list(edid_map.keys())[fuzzy_edid_map.index(fuzzy_output)]]
 391             elif "off" not in options:
 392                 raise AutorandrException("Failed to find an EDID for output `%s' in setup file, required as `%s' "
 393                                          "is not off in config file." % (options["output"], options["output"]))
 394         output = options["output"]
 395         del options["output"]
 396
 397         return XrandrOutput(output, edid, options)
 398
 399     def edid_equals(self, other):
 400         "Compare to another XrandrOutput's edid and on/off-state, taking legacy autorandr behaviour (md5sum'ing) into account"
 401         if self.edid and other.edid:
 402             if len(self.edid) == 32 and len(other.edid) != 32 and not other.edid.startswith(XrandrOutput.EDID_UNAVAILABLE):
 403                 return hashlib.md5(binascii.unhexlify(other.edid)).hexdigest() == self.edid
 404             if len(self.edid) != 32 and len(other.edid) == 32 and not self.edid.startswith(XrandrOutput.EDID_UNAVAILABLE):
 405                 return hashlib.md5(binascii.unhexlify(self.edid)).hexdigest() == other.edid
 406             if "*" in self.edid:
 407                 return fnmatch.fnmatch(other.edid, self.edid)
 408             elif "*" in other.edid:
 409                 return fnmatch.fnmatch(self.edid, other.edid)
 410         return self.edid == other.edid
 411
 412     def __ne__(self, other):
 413         return not (self == other)
 414
 415     def __eq__(self, other):
 416         return self.edid_equals(other) and self.output == other.output and self.filtered_options == other.filtered_options
 417
 418     def verbose_diff(self, other):
 419         "Compare to another XrandrOutput and return a list of human readable differences"
 420         diffs = []
 421         if not self.edid_equals(other):
 422             diffs.append("EDID `%s' differs from `%s'" % (self.short_edid, other.short_edid))
 423         if self.output != other.output:
 424             diffs.append("Output name `%s' differs from `%s'" % (self.output, other.output))
 425         if "off" in self.options and "off" not in other.options:
 426             diffs.append("The output is disabled currently, but active in the new configuration")
 427         elif "off" in other.options and "off" not in self.options:
 428             diffs.append("The output is currently enabled, but inactive in the new configuration")
 429         else:
 430             for name in set(chain.from_iterable((self.options.keys(), other.options.keys()))):
 431                 if name not in other.options:
 432                     diffs.append("Option --%s %sis not present in the new configuration" %
 433                                  (name, "(= `%s') " % self.options[name] if self.options[name] else ""))
 434                 elif name not in self.options:
 435                     diffs.append("Option --%s (`%s' in the new configuration) is not present currently" %
 436                                  (name, other.options[name]))
 437                 elif self.options[name] != other.options[name]:
 438                     diffs.append("Option --%s %sis `%s' in the new configuration" %
 439                                  (name, "(= `%s') " % self.options[name] if self.options[name] else "", other.options[name]))
 440         return diffs
 441
 442
 443 def xrandr_version():
 444     "Return the version of XRandR that this system uses"
 445     if getattr(xrandr_version, "version", False) is False:
 446         version_string = os.popen("xrandr -v").read()
 447         try:
 448             version = re.search("xrandr program version\s+([0-9\.]+)", version_string).group(1)
 449             xrandr_version.version = Version(version)
 450         except AttributeError:
 451             xrandr_version.version = Version("1.3.0")
 452
 453     return xrandr_version.version
 454
 455
 456 def debug_regexp(pattern, string):
 457     "Use the partial matching functionality of the regex module to display debug info on a non-matching regular expression"
 458     try:
 459         import regex
 460         bounds = (0, len(string))
 461         while bounds[0] != bounds[1]:
 462             half = int((bounds[0] + bounds[1]) / 2)
 463             if half == bounds[0]:
 464                 break
 465             bounds = (half, bounds[1]) if regex.search(pattern, string[:half], partial=True) else (bounds[0], half - 1)
 466         partial_length = bounds[0]
 467         return ("Regular expression matched until position %d, ..'%s', and did not match from '%s'.." %
 468                 (partial_length, string[max(0, partial_length - 20):partial_length],
 469                  string[partial_length:partial_length + 10]))
 470     except ImportError:
 471         pass
 472     return "Debug information would be available if the `regex' module was installed."
 473
 474
 475 def parse_xrandr_output():
 476     "Parse the output of `xrandr --verbose' into a list of outputs"
 477     xrandr_output = os.popen("xrandr -q --verbose").read()
 478     if not xrandr_output:
 479         raise AutorandrException("Failed to run xrandr")
 480
 481     # We are not interested in screens
 482     xrandr_output = re.sub("(?m)^Screen [0-9].+", "", xrandr_output).strip()
 483
 484     # Split at output boundaries and instanciate an XrandrOutput per output
 485     split_xrandr_output = re.split("(?m)^([^ ]+ (?:(?:dis)?connected|unknown connection).*)$", xrandr_output)
 486     if len(split_xrandr_output) < 2:
 487         raise AutorandrException("No output boundaries found", report_bug=True)
 488     outputs = OrderedDict()
 489     modes = OrderedDict()
 490     for i in range(1, len(split_xrandr_output), 2):
 491         output_name = split_xrandr_output[i].split()[0]
 492         output, output_modes = XrandrOutput.from_xrandr_output("".join(split_xrandr_output[i:i + 2]))
 493         outputs[output_name] = output
 494         if output_modes:
 495             modes[output_name] = output_modes
 496
 497     return outputs, modes
 498
 499
 500 def load_profiles(profile_path):
 501     "Load the stored profiles"
 502
 503     profiles = {}
 504     for profile in os.listdir(profile_path):
 505         config_name = os.path.join(profile_path, profile, "config")
 506         setup_name = os.path.join(profile_path, profile, "setup")
 507         if not os.path.isfile(config_name) or not os.path.isfile(setup_name):
 508             continue
 509
 510         edids = dict([x.split() for x in (y.strip() for y in open(setup_name).readlines()) if x and x[0] != "#"])
 511
 512         config = {}
 513         buffer = []
 514         for line in chain(open(config_name).readlines(), ["output"]):
 515             if line[:6] == "output" and buffer:
 516                 config[buffer[0].strip().split()[-1]] = XrandrOutput.from_config_file(edids, "".join(buffer))
 517                 buffer = [line]
 518             else:
 519                 buffer.append(line)
 520
 521         for output_name in list(config.keys()):
 522             if config[output_name].edid is None:
 523                 del config[output_name]
 524
 525         profiles[profile] = {
 526             "config": config,
 527             "path": os.path.join(profile_path, profile),
 528             "config-mtime": os.stat(config_name).st_mtime,
 529         }
 530
 531     return profiles
 532
 533
 534 def get_symlinks(profile_path):
 535     "Load all symlinks from a directory"
 536
 537     symlinks = {}
 538     for link in os.listdir(profile_path):
 539         file_name = os.path.join(profile_path, link)
 540         if os.path.islink(file_name):
 541             symlinks[link] = os.readlink(file_name)
 542
 543     return symlinks
 544
 545
 546 def find_profiles(current_config, profiles):
 547     "Find profiles matching the currently connected outputs"
 548     detected_profiles = []
 549     for profile_name, profile in profiles.items():
 550         config = profile["config"]
 551         matches = True
 552         for name, output in config.items():
 553             if not output.edid:
 554                 continue
 555             if name not in current_config or not output.edid_equals(current_config[name]):
 556                 matches = False
 557                 break
 558         if not matches or any((name not in config.keys() for name in current_config.keys() if current_config[name].edid)):
 559             continue
 560         if matches:
 561             detected_profiles.append(profile_name)
 562     return detected_profiles
 563
 564
 565 def profile_blocked(profile_path, meta_information=None):
 566     """Check if a profile is blocked.
 567
 568     meta_information is expected to be an dictionary. It will be passed to the block scripts
 569     in the environment, as variables called AUTORANDR_<CAPITALIZED_KEY_HERE>.
 570     """
 571     return not exec_scripts(profile_path, "block", meta_information)
 572
 573
 574 def output_configuration(configuration, config):
 575     "Write a configuration file"
 576     outputs = sorted(configuration.keys(), key=lambda x: configuration[x].sort_key)
 577     for output in outputs:
 578         print(configuration[output].option_string, file=config)
 579
 580
 581 def output_setup(configuration, setup):
 582     "Write a setup (fingerprint) file"
 583     outputs = sorted(configuration.keys())
 584     for output in outputs:
 585         if configuration[output].edid:
 586             print(output, configuration[output].edid, file=setup)
 587
 588
 589 def save_configuration(profile_path, configuration):
 590     "Save a configuration into a profile"
 591     if not os.path.isdir(profile_path):
 592         os.makedirs(profile_path)
 593     with open(os.path.join(profile_path, "config"), "w") as config:
 594         output_configuration(configuration, config)
 595     with open(os.path.join(profile_path, "setup"), "w") as setup:
 596         output_setup(configuration, setup)
 597
 598
 599 def update_mtime(filename):
 600     "Update a file's mtime"
 601     try:
 602         os.utime(filename, None)
 603         return True
 604     except:
 605         return False
 606
 607
 608 def call_and_retry(*args, **kwargs):
 609     """Wrapper around subprocess.call that retries failed calls.
 610
 611     This function calls subprocess.call and on non-zero exit states,
 612     waits a second and then retries once. This mitigates #47,
 613     a timing issue with some drivers.
 614     """
 615     if "dry_run" in kwargs:
 616         dry_run = kwargs["dry_run"]
 617         del kwargs["dry_run"]
 618     else:
 619         dry_run = False
 620     kwargs_redirected = dict(kwargs)
 621     if not dry_run:
 622         if hasattr(subprocess, "DEVNULL"):
 623             kwargs_redirected["stdout"] = getattr(subprocess, "DEVNULL")
 624         else:
 625             kwargs_redirected["stdout"] = open(os.devnull, "w")
 626         kwargs_redirected["stderr"] = kwargs_redirected["stdout"]
 627     retval = subprocess.call(*args, **kwargs_redirected)
 628     if retval != 0:
 629         time.sleep(1)
 630         retval = subprocess.call(*args, **kwargs)
 631     return retval
 632
 633
 634 def get_fb_dimensions(configuration):
 635     width = 0
 636     height = 0
 637     for output in configuration.values():
 638         if "off" in output.options or not output.edid:
 639             continue
 640         # This won't work with all modes -- but it's a best effort.
 641         o_width, o_height = map(int, output.options["mode"].split("x"))
 642         if "transform" in output.options:
 643             a, b, c, d, e, f, g, h, i = map(float, output.options["transform"].split(","))
 644             w = (g * o_width + h * o_height + i)
 645             x = (a * o_width + b * o_height + c) / w
 646             y = (d * o_width + e * o_height + f) / w
 647             o_width, o_height = x, y
 648         if "rotate" in output.options:
 649             if output.options["rotate"] in ("left", "right"):
 650                 o_width, o_height = o_height, o_width
 651         if "pos" in output.options:
 652             o_left, o_top = map(int, output.options["pos"].split("x"))
 653             o_width += o_left
 654             o_height += o_top
 655         if "panning" in output.options:
 656             match = re.match("(?P<w>[0-9]+)x(?P<h>[0-9]+)(?:\+(?P<x>[0-9]+))?(?:\+(?P<y>[0-9]+))?.*", output.options["panning"])
 657             if match:
 658                 detail = match.groupdict()
 659                 o_width = int(detail.get("w")) + int(detail.get("x", "0"))
 660                 o_height = int(detail.get("h")) + int(detail.get("y", "0"))
 661         width = max(width, o_width)
 662         height = max(height, o_height)
 663     return int(width), int(height)
 664
 665
 666 def apply_configuration(new_configuration, current_configuration, dry_run=False):
 667     "Apply a configuration"
 668     outputs = sorted(new_configuration.keys(), key=lambda x: new_configuration[x].sort_key)
 669     if dry_run:
 670         base_argv = ["echo", "xrandr"]
 671     else:
 672         base_argv = ["xrandr"]
 673
 674     # There are several xrandr / driver bugs we need to take care of here:
 675     # - We cannot enable more than two screens at the same time
 676     #   See https://github.com/phillipberndt/autorandr/pull/6
 677     #   and commits f4cce4d and 8429886.
 678     # - We cannot disable all screens
 679     #   See https://github.com/phillipberndt/autorandr/pull/20
 680     # - We should disable screens before enabling others, because there's
 681     #   a limit on the number of enabled screens
 682     # - We must make sure that the screen at 0x0 is activated first,
 683     #   or the other (first) screen to be activated would be moved there.
 684     # - If an active screen already has a transformation and remains active,
 685     #   the xrandr call fails with an invalid RRSetScreenSize parameter error.
 686     #   Update the configuration in 3 passes in that case.  (On Haswell graphics,
 687     #   at least.)
 688     # - Some implementations can not handle --transform at all, so avoid it unless
 689     #   necessary. (See https://github.com/phillipberndt/autorandr/issues/37)
 690     # - Some implementations can not handle --panning without specifying --fb
 691     #   explicitly, so avoid it unless necessary.
 692     #   (See https://github.com/phillipberndt/autorandr/issues/72)
 693
 694     fb_dimensions = get_fb_dimensions(new_configuration)
 695     try:
 696         base_argv += ["--fb", "%dx%d" % fb_dimensions]
 697     except:
 698         # Failed to obtain frame-buffer size. Doesn't matter, xrandr will choose for the user.
 699         pass
 700
 701     auxiliary_changes_pre = []
 702     disable_outputs = []
 703     enable_outputs = []
 704     remain_active_count = 0
 705     for output in outputs:
 706         if not new_configuration[output].edid or "off" in new_configuration[output].options:
 707             disable_outputs.append(new_configuration[output].option_vector)
 708         else:
 709             if "off" not in current_configuration[output].options:
 710                 remain_active_count += 1
 711
 712             option_vector = new_configuration[output].option_vector
 713             if xrandr_version() >= Version("1.3.0"):
 714                 for option, off_value in (("transform", "none"), ("panning", "0x0")):
 715                     if option in current_configuration[output].options:
 716                         auxiliary_changes_pre.append(["--output", output, "--%s" % option, off_value])
 717                     else:
 718                         try:
 719                             option_index = option_vector.index("--%s" % option)
 720                             if option_vector[option_index + 1] == XrandrOutput.XRANDR_DEFAULTS[option]:
 721                                 option_vector = option_vector[:option_index] + option_vector[option_index + 2:]
 722                         except ValueError:
 723                             pass
 724
 725             enable_outputs.append(option_vector)
 726
 727     # Perform pe-change auxiliary changes
 728     if auxiliary_changes_pre:
 729         argv = base_argv + list(chain.from_iterable(auxiliary_changes_pre))
 730         if call_and_retry(argv, dry_run=dry_run) != 0:
 731             raise AutorandrException("Command failed: %s" % " ".join(argv))
 732
 733     # Disable unused outputs, but make sure that there always is at least one active screen
 734     disable_keep = 0 if remain_active_count else 1
 735     if len(disable_outputs) > disable_keep:
 736         argv = base_argv + list(chain.from_iterable(disable_outputs[:-1] if disable_keep else disable_outputs))
 737         if call_and_retry(argv, dry_run=dry_run) != 0:
 738             # Disabling the outputs failed. Retry with the next command:
 739             # Sometimes disabling of outputs fails due to an invalid RRSetScreenSize.
 740             # This does not occur if simultaneously the primary screen is reset.
 741             pass
 742         else:
 743             disable_outputs = disable_outputs[-1:] if disable_keep else []
 744
 745     # If disable_outputs still has more than one output in it, one of the xrandr-calls below would
 746     # disable the last two screens. This is a problem, so if this would happen, instead disable only
 747     # one screen in the first call below.
 748     if len(disable_outputs) > 0 and len(disable_outputs) % 2 == 0:
 749         # In the context of a xrandr call that changes the display state, `--query' should do nothing
 750         disable_outputs.insert(0, ['--query'])
 751
 752     # Enable the remaining outputs in pairs of two operations
 753     operations = disable_outputs + enable_outputs
 754     for index in range(0, len(operations), 2):
 755         argv = base_argv + list(chain.from_iterable(operations[index:index + 2]))
 756         if call_and_retry(argv, dry_run=dry_run) != 0:
 757             raise AutorandrException("Command failed: %s" % " ".join(argv))
 758
 759
 760 def is_equal_configuration(source_configuration, target_configuration):
 761     """
 762         Check if all outputs from target are already configured correctly in source and
 763         that no other outputs are active.
 764     """
 765     for output in target_configuration.keys():
 766         if "off" in target_configuration[output].options:
 767             if (output in source_configuration and "off" not in source_configuration[output].options):
 768                 return False
 769         else:
 770             if (output not in source_configuration) or (source_configuration[output] != target_configuration[output]):
 771                 return False
 772     for output in source_configuration.keys():
 773         if "off" in source_configuration[output].options:
 774             if output in target_configuration and "off" not in target_configuration[output].options:
 775                 return False
 776         else:
 777             if output not in target_configuration:
 778                 return False
 779     return True
 780
 781
 782 def add_unused_outputs(source_configuration, target_configuration):
 783     "Add outputs that are missing in target to target, in 'off' state"
 784     for output_name, output in source_configuration.items():
 785         if output_name not in target_configuration:
 786             target_configuration[output_name] = XrandrOutput(output_name, output.edid, {"off": None})
 787
 788
 789 def remove_irrelevant_outputs(source_configuration, target_configuration):
 790     "Remove outputs from target that ought to be 'off' and already are"
 791     for output_name, output in source_configuration.items():
 792         if "off" in output.options:
 793             if output_name in target_configuration:
 794                 if "off" in target_configuration[output_name].options:
 795                     del target_configuration[output_name]
 796
 797
 798 def generate_virtual_profile(configuration, modes, profile_name):
 799     "Generate one of the virtual profiles"
 800     configuration = copy.deepcopy(configuration)
 801     if profile_name == "common":
 802         mode_sets = []
 803         for output, output_modes in modes.items():
 804             mode_set = set()
 805             if configuration[output].edid:
 806                 for mode in output_modes:
 807                     mode_set.add((mode["width"], mode["height"]))
 808             mode_sets.append(mode_set)
 809         common_resolution = reduce(lambda a, b: a & b, mode_sets[1:], mode_sets[0])
 810         common_resolution = sorted(common_resolution, key=lambda a: int(a[0]) * int(a[1]))
 811         if common_resolution:
 812             for output in configuration:
 813                 configuration[output].options = {}
 814                 if output in modes and configuration[output].edid:
 815                     modes_sorted = sorted(modes[output], key=lambda x: 0 if x["preferred"] else 1)
 816                     modes_filtered = [x for x in modes_sorted if (x["width"], x["height"]) == common_resolution[-1]]
 817                     mode = modes_filtered[0]
 818                     configuration[output].options["mode"] = mode['name']
 819                     configuration[output].options["pos"] = "0x0"
 820                 else:
 821                     configuration[output].options["off"] = None
 822     elif profile_name in ("horizontal", "vertical"):
 823         shift = 0
 824         if profile_name == "horizontal":
 825             shift_index = "width"
 826             pos_specifier = "%sx0"
 827         else:
 828             shift_index = "height"
 829             pos_specifier = "0x%s"
 830
 831         for output in configuration:
 832             configuration[output].options = {}
 833             if output in modes and configuration[output].edid:
 834                 def key(a):
 835                     score = int(a["width"]) * int(a["height"])
 836                     if a["preferred"]:
 837                         score += 10**6
 838                     return score
 839                 output_modes = sorted(modes[output], key=key)
 840                 mode = output_modes[-1]
 841                 configuration[output].options["mode"] = mode["name"]
 842                 configuration[output].options["rate"] = mode["rate"]
 843                 configuration[output].options["pos"] = pos_specifier % shift
 844                 shift += int(mode[shift_index])
 845             else:
 846                 configuration[output].options["off"] = None
 847     elif profile_name == "clone-largest":
 848         modes_unsorted = [output_modes[0] for output, output_modes in modes.items()]
 849         modes_sorted = sorted(modes_unsorted, key=lambda x: int(x["width"]) * int(x["height"]), reverse=True)
 850         biggest_resolution = modes_sorted[0]
 851         for output in configuration:
 852             configuration[output].options = {}
 853             if output in modes and configuration[output].edid:
 854                 def key(a):
 855                     score = int(a["width"]) * int(a["height"])
 856                     if a["preferred"]:
 857                         score += 10**6
 858                     return score
 859                 output_modes = sorted(modes[output], key=key)
 860                 mode = output_modes[-1]
 861                 configuration[output].options["mode"] = mode["name"]
 862                 configuration[output].options["rate"] = mode["rate"]
 863                 configuration[output].options["pos"] = "0x0"
 864                 scale = max(float(biggest_resolution["width"]) / float(mode["width"]),
 865                             float(biggest_resolution["height"]) / float(mode["height"]))
 866                 mov_x = (float(mode["width"]) * scale - float(biggest_resolution["width"])) / -2
 867                 mov_y = (float(mode["height"]) * scale - float(biggest_resolution["height"])) / -2
 868                 configuration[output].options["transform"] = "{},0,{},0,{},{},0,0,1".format(scale, mov_x, scale, mov_y)
 869             else:
 870                 configuration[output].options["off"] = None
 871     elif profile_name == "off":
 872         for output in configuration:
 873             for key in list(configuration[output].options.keys()):
 874                 del configuration[output].options[key]
 875             configuration[output].options["off"] = None
 876     return configuration
 877
 878
 879 def print_profile_differences(one, another):
 880     "Print the differences between two profiles for debugging"
 881     if one == another:
 882         return
 883     print("| Differences between the two profiles:")
 884     for output in set(chain.from_iterable((one.keys(), another.keys()))):
 885         if output not in one:
 886             if "off" not in another[output].options:
 887                 print("| Output `%s' is missing from the active configuration" % output)
 888         elif output not in another:
 889             if "off" not in one[output].options:
 890                 print("| Output `%s' is missing from the new configuration" % output)
 891         else:
 892             for line in one[output].verbose_diff(another[output]):
 893                 print("| [Output %s] %s" % (output, line))
 894     print("\\-")
 895
 896
 897 def exit_help():
 898     "Print help and exit"
 899     print(help_text)
 900     for profile in virtual_profiles:
 901         name, description = profile[:2]
 902         description = [description]
 903         max_width = 78 - 18
 904         while len(description[0]) > max_width + 1:
 905             left_over = description[0][max_width:]
 906             description[0] = description[0][:max_width] + "-"
 907             description.insert(1, "  %-15s %s" % ("", left_over))
 908         description = "\n".join(description)
 909         print("  %-15s %s" % (name, description))
 910     sys.exit(0)
 911
 912
 913 def exec_scripts(profile_path, script_name, meta_information=None):
 914     """"Run userscripts
 915
 916     This will run all executables from the profile folder, and global per-user
 917     and system-wide configuration folders, named script_name or residing in
 918     subdirectories named script_name.d.
 919
 920     If profile_path is None, only global scripts will be invoked.
 921
 922     meta_information is expected to be an dictionary. It will be passed to the block scripts
 923     in the environment, as variables called AUTORANDR_<CAPITALIZED_KEY_HERE>.
 924
 925     Returns True unless any of the scripts exited with non-zero exit status.
 926     """
 927     all_ok = True
 928     env = os.environ.copy()
 929     if meta_information:
 930         for key, value in meta_information.items():
 931             env["AUTORANDR_{}".format(key.upper())] = str(value)
 932
 933     # If there are multiple candidates, the XDG spec tells to only use the first one.
 934     ran_scripts = set()
 935
 936     user_profile_path = os.path.expanduser("~/.autorandr")
 937     if not os.path.isdir(user_profile_path):
 938         user_profile_path = os.path.join(os.environ.get("XDG_CONFIG_HOME", os.path.expanduser("~/.config")), "autorandr")
 939
 940     candidate_directories = [user_profile_path]
 941     for config_dir in os.environ.get("XDG_CONFIG_DIRS", "/etc/xdg").split(":"):
 942         candidate_directories.append(os.path.join(config_dir, "autorandr"))
 943     if profile_path:
 944         candidate_directories.append(profile_path)
 945
 946     for folder in candidate_directories:
 947         if script_name not in ran_scripts:
 948             script = os.path.join(folder, script_name)
 949             if os.access(script, os.X_OK | os.F_OK):
 950                 try:
 951                     all_ok &= subprocess.call(script, env=env) != 0
 952                 except:
 953                     raise AutorandrException("Failed to execute user command: %s" % (script,))
 954                 ran_scripts.add(script_name)
 955
 956         script_folder = os.path.join(folder, "%s.d" % script_name)
 957         if os.access(script_folder, os.R_OK | os.X_OK) and os.path.isdir(script_folder):
 958             for file_name in os.listdir(script_folder):
 959                 check_name = "d/%s" % (file_name,)
 960                 if check_name not in ran_scripts:
 961                     script = os.path.join(script_folder, file_name)
 962                     if os.access(script, os.X_OK | os.F_OK):
 963                         try:
 964                             all_ok &= subprocess.call(script, env=env) != 0
 965                         except:
 966                             raise AutorandrException("Failed to execute user command: %s" % (script,))
 967                         ran_scripts.add(check_name)
 968
 969     return all_ok
 970
 971
 972 def dispatch_call_to_sessions(argv):
 973     """Invoke autorandr for each open local X11 session with the given options.
 974
 975     The function iterates over all processes not owned by root and checks
 976     whether they have DISPLAY and XAUTHORITY variables set. It strips the
 977     screen from any variable it finds (i.e. :0.0 becomes :0) and checks whether
 978     this display has been handled already. If it has not, it forks, changes
 979     uid/gid to the user owning the process, reuses the process's environment
 980     and runs autorandr with the parameters from argv.
 981
 982     This function requires root permissions. It only works for X11 servers that
 983     have at least one non-root process running. It is susceptible for attacks
 984     where one user runs a process with another user's DISPLAY variable - in
 985     this case, it might happen that autorandr is invoked for the other user,
 986     which won't work. Since no other harm than prevention of automated
 987     execution of autorandr can be done this way, the assumption is that in this
 988     situation, the local administrator will handle the situation."""
 989
 990     X11_displays_done = set()
 991
 992     autorandr_binary = os.path.abspath(argv[0])
 993     backup_candidates = {}
 994
 995     def fork_child_autorandr(pwent, process_environ):
 996         print("Running autorandr as %s for display %s" % (pwent.pw_name, process_environ["DISPLAY"]))
 997         child_pid = os.fork()
 998         if child_pid == 0:
 999             # This will throw an exception if any of the privilege changes fails,
1000             # so it should be safe. Also, note that since the environment
1001             # is taken from a process owned by the user, reusing it should
1002             # not leak any information.
1003             os.setgroups([])
1004             os.setresgid(pwent.pw_gid, pwent.pw_gid, pwent.pw_gid)
1005             os.setresuid(pwent.pw_uid, pwent.pw_uid, pwent.pw_uid)
1006             os.chdir(pwent.pw_dir)
1007             os.environ.clear()
1008             os.environ.update(process_environ)
1009             os.execl(autorandr_binary, autorandr_binary, *argv[1:])
1010             os.exit(1)
1011         os.waitpid(child_pid, 0)
1012
1013     for directory in os.listdir("/proc"):
1014         directory = os.path.join("/proc/", directory)
1015         if not os.path.isdir(directory):
1016             continue
1017         environ_file = os.path.join(directory, "environ")
1018         if not os.path.isfile(environ_file):
1019             continue
1020         uid = os.stat(environ_file).st_uid
1021
1022         # The following line assumes that user accounts start at 1000 and that
1023         # no one works using the root or another system account. This is rather
1024         # restrictive, but de facto default. Alternatives would be to use the
1025         # UID_MIN from /etc/login.defs or FIRST_UID from /etc/adduser.conf;
1026         # but effectively, both values aren't binding in any way.
1027         # If this breaks your use case, please file a bug on Github.
1028         if uid < 1000:
1029             continue
1030
1031         process_environ = {}
1032         for environ_entry in open(environ_file).read().split("\0"):
1033             name, sep, value = environ_entry.partition("=")
1034             if name and sep:
1035                 if name == "DISPLAY" and "." in value:
1036                     value = value[:value.find(".")]
1037                 process_environ[name] = value
1038
1039         if "DISPLAY" not in process_environ:
1040             # Cannot work with this environment, skip.
1041             continue
1042
1043         # To allow scripts to detect batch invocation (especially useful for predetect)
1044         process_environ["AUTORANDR_BATCH_PID"] = str(os.getpid())
1045         process_environ["UID"] = str(uid)
1046
1047         display = process_environ["DISPLAY"]
1048
1049         if "XAUTHORITY" not in process_environ:
1050             # It's very likely that we cannot work with this environment either,
1051             # but keep it as a backup just in case we don't find anything else.
1052             backup_candidates[display] = process_environ
1053             continue
1054
1055         if display not in X11_displays_done:
1056             try:
1057                 pwent = pwd.getpwuid(uid)
1058             except KeyError:
1059                 # User has no pwd entry
1060                 continue
1061
1062             fork_child_autorandr(pwent, process_environ)
1063             X11_displays_done.add(display)
1064
1065     # Run autorandr for any users/displays which didn't have a process with
1066     # XAUTHORITY set.
1067     for display, process_environ in backup_candidates.items():
1068         if display not in X11_displays_done:
1069             try:
1070                 pwent = pwd.getpwuid(int(process_environ["UID"]))
1071             except KeyError:
1072                 # User has no pwd entry
1073                 continue
1074
1075             fork_child_autorandr(pwent, process_environ)
1076             X11_displays_done.add(display)
1077
1078
1079 def enabled_monitors(config):
1080     monitors = []
1081     for monitor in config:
1082         if "--off" in config[monitor].option_vector:
1083             continue
1084         monitors.append(monitor)
1085     return monitors
1086
1087
1088 def read_config(options, directory):
1089     """Parse a configuration config.ini from directory and merge it into
1090     the options dictionary"""
1091     config = configparser.ConfigParser()
1092     config.read(os.path.join(directory, "settings.ini"))
1093     if config.has_section("config"):
1094         for key, value in config.items("config"):
1095             options.setdefault("--%s" % key, value)
1096
1097 def main(argv):
1098     try:
1099         opts, args = getopt.getopt(argv[1:], "s:r:l:d:cfh",
1100                                    ["batch", "dry-run", "change", "default=", "save=", "remove=", "load=",
1101                                     "force", "fingerprint", "config", "debug", "skip-options=", "help",
1102                                     "current", "detected", "version"])
1103     except getopt.GetoptError as e:
1104         print("Failed to parse options: {0}.\n"
1105               "Use --help to get usage information.".format(str(e)),
1106               file=sys.stderr)
1107         sys.exit(posix.EX_USAGE)
1108
1109     options = dict(opts)
1110
1111     if "-h" in options or "--help" in options:
1112         exit_help()
1113
1114     if "--version" in options:
1115         print("autorandr " + __version__)
1116         sys.exit(0)
1117
1118     if "--current" in options and "--detected" in options:
1119         print("--current and --detected are mutually exclusive.", file=sys.stderr)
1120         sys.exit(posix.EX_USAGE)
1121
1122     # Batch mode
1123     if "--batch" in options:
1124         if ("DISPLAY" not in os.environ or not os.environ["DISPLAY"]) and os.getuid() == 0:
1125             dispatch_call_to_sessions([x for x in argv if x != "--batch"])
1126         else:
1127             print("--batch mode can only be used by root and if $DISPLAY is unset")
1128         return
1129     if "AUTORANDR_BATCH_PID" in os.environ:
1130         user = pwd.getpwuid(os.getuid())
1131         user = user.pw_name if user else "#%d" % os.getuid()
1132         print("autorandr running as user %s (started from batch instance)" % user)
1133
1134     profiles = {}
1135     profile_symlinks = {}
1136     try:
1137         # Load profiles from each XDG config directory
1138         # The XDG spec says that earlier entries should take precedence, so reverse the order
1139         for directory in reversed(os.environ.get("XDG_CONFIG_DIRS", "/etc/xdg").split(":")):
1140             system_profile_path = os.path.join(directory, "autorandr")
1141             if os.path.isdir(system_profile_path):
1142                 profiles.update(load_profiles(system_profile_path))
1143                 profile_symlinks.update(get_symlinks(system_profile_path))
1144                 read_config(options, system_profile_path)
1145         # For the user's profiles, prefer the legacy ~/.autorandr if it already exists
1146         # profile_path is also used later on to store configurations
1147         profile_path = os.path.expanduser("~/.autorandr")
1148         if not os.path.isdir(profile_path):
1149             # Elsewise, follow the XDG specification
1150             profile_path = os.path.join(os.environ.get("XDG_CONFIG_HOME", os.path.expanduser("~/.config")), "autorandr")
1151         if os.path.isdir(profile_path):
1152             profiles.update(load_profiles(profile_path))
1153             profile_symlinks.update(get_symlinks(profile_path))
1154             read_config(options, profile_path)
1155         # Sort by descending mtime
1156         profiles = OrderedDict(sorted(profiles.items(), key=lambda x: -x[1]["config-mtime"]))
1157     except Exception as e:
1158         raise AutorandrException("Failed to load profiles", e)
1159
1160     profile_symlinks = {k: v for k, v in profile_symlinks.items() if v in (x[0] for x in virtual_profiles) or v in profiles}
1161
1162     exec_scripts(None, "predetect")
1163     config, modes = parse_xrandr_output()
1164
1165     if "--fingerprint" in options:
1166         output_setup(config, sys.stdout)
1167         sys.exit(0)
1168
1169     if "--config" in options:
1170         output_configuration(config, sys.stdout)
1171         sys.exit(0)
1172
1173     if "--skip-options" in options:
1174         skip_options = [y[2:] if y[:2] == "--" else y for y in (x.strip() for x in options["--skip-options"].split(","))]
1175         for profile in profiles.values():
1176             for output in profile["config"].values():
1177                 output.set_ignored_options(skip_options)
1178         for output in config.values():
1179             output.set_ignored_options(skip_options)
1180
1181     if "-s" in options:
1182         options["--save"] = options["-s"]
1183     if "--save" in options:
1184         if options["--save"] in (x[0] for x in virtual_profiles):
1185             raise AutorandrException("Cannot save current configuration as profile '%s':\n"
1186                                      "This configuration name is a reserved virtual configuration." % options["--save"])
1187         try:
1188             profile_folder = os.path.join(profile_path, options["--save"])
1189             save_configuration(profile_folder, config)
1190             exec_scripts(profile_folder, "postsave", {
1191                 "CURRENT_PROFILE": options["--save"],
1192                 "PROFILE_FOLDER": profile_folder,
1193                 "MONITORS": ":".join(enabled_monitors(config)),
1194             })
1195         except Exception as e:
1196             raise AutorandrException("Failed to save current configuration as profile '%s'" % (options["--save"],), e)
1197         print("Saved current configuration as profile '%s'" % options["--save"])
1198         sys.exit(0)
1199
1200     if "-r" in options:
1201         options["--remove"] = options["-r"]
1202     if "--remove" in options:
1203         if options["--remove"] in (x[0] for x in virtual_profiles):
1204             raise AutorandrException("Cannot remove profile '%s':\n"
1205                                      "This configuration name is a reserved virtual configuration." % options["--remove"])
1206         if options["--remove"] not in profiles.keys():
1207             raise AutorandrException("Cannot remove profile '%s':\n"
1208                                      "This profile does not exist." % options["--remove"])
1209         try:
1210             remove = True
1211             profile_folder = os.path.join(profile_path, options["--remove"])
1212             profile_dirlist = os.listdir(profile_folder)
1213             profile_dirlist.remove("config")
1214             profile_dirlist.remove("setup")
1215             if profile_dirlist:
1216                 print("Profile folder '%s' contains the following additional files:\n"
1217                       "---\n%s\n---" % (options["--remove"], "\n".join(profile_dirlist)))
1218                 response = input("Do you really want to remove profile '%s'? If so, type 'yes': " % options["--remove"]).strip()
1219                 if response != "yes":
1220                     remove = False
1221             if remove is True:
1222                 shutil.rmtree(profile_folder)
1223                 print("Removed profile '%s'" % options["--remove"])
1224             else:
1225                 print("Profile '%s' was not removed" % options["--remove"])
1226         except Exception as e:
1227             raise AutorandrException("Failed to remove profile '%s'" % (options["--remove"],), e)
1228         sys.exit(0)
1229
1230     detected_profiles = find_profiles(config, profiles)
1231     load_profile = False
1232
1233     if "-l" in options:
1234         options["--load"] = options["-l"]
1235     if "--load" in options:
1236         load_profile = options["--load"]
1237     elif len(args) == 1:
1238         load_profile = args[0]
1239     else:
1240         # Find the active profile(s) first, for the block script (See #42)
1241         current_profiles = []
1242         for profile_name in profiles.keys():
1243             configs_are_equal = is_equal_configuration(config, profiles[profile_name]["config"])
1244             if configs_are_equal:
1245                 current_profiles.append(profile_name)
1246         block_script_metadata = {
1247             "CURRENT_PROFILE": "".join(current_profiles[:1]),
1248             "CURRENT_PROFILES": ":".join(current_profiles)
1249         }
1250
1251         for profile_name in profiles.keys():
1252             if profile_blocked(os.path.join(profile_path, profile_name), block_script_metadata):
1253                 if "--current" not in options and "--detected" not in options:
1254                     print("%s (blocked)" % profile_name)
1255                 continue
1256             props = []
1257             if profile_name in detected_profiles:
1258                 props.append("(detected)")
1259                 if ("-c" in options or "--change" in options) and not load_profile:
1260                     load_profile = profile_name
1261             elif "--detected" in options:
1262                 continue
1263             if profile_name in current_profiles:
1264                 props.append("(current)")
1265             elif "--current" in options:
1266                 continue
1267             if "--current" in options or "--detected" in options:
1268                 print("%s" % (profile_name, ))
1269             else:
1270                 print("%s%s%s" % (profile_name, " " if props else "", " ".join(props)))
1271             if not configs_are_equal and "--debug" in options and profile_name in detected_profiles:
1272                 print_profile_differences(config, profiles[profile_name]["config"])
1273
1274     if "-d" in options:
1275         options["--default"] = options["-d"]
1276     if not load_profile and "--default" in options and ("-c" in options or "--change" in options):
1277         load_profile = options["--default"]
1278
1279     if load_profile:
1280         if load_profile in profile_symlinks:
1281             if "--debug" in options:
1282                 print("'%s' symlinked to '%s'" % (load_profile, profile_symlinks[load_profile]))
1283             load_profile = profile_symlinks[load_profile]
1284
1285         if load_profile in (x[0] for x in virtual_profiles):
1286             load_config = generate_virtual_profile(config, modes, load_profile)
1287             scripts_path = os.path.join(profile_path, load_profile)
1288         else:
1289             try:
1290                 profile = profiles[load_profile]
1291                 load_config = profile["config"]
1292                 scripts_path = profile["path"]
1293             except KeyError:
1294                 raise AutorandrException("Failed to load profile '%s': Profile not found" % load_profile)
1295             if load_profile in detected_profiles and detected_profiles[0] != load_profile:
1296                 update_mtime(os.path.join(scripts_path, "config"))
1297         add_unused_outputs(config, load_config)
1298         if load_config == dict(config) and "-f" not in options and "--force" not in options:
1299             print("Config already loaded", file=sys.stderr)
1300             sys.exit(0)
1301         if "--debug" in options and load_config != dict(config):
1302             print("Loading profile '%s'" % load_profile)
1303             print_profile_differences(config, load_config)
1304
1305         remove_irrelevant_outputs(config, load_config)
1306
1307         try:
1308             if "--dry-run" in options:
1309                 apply_configuration(load_config, config, True)
1310             else:
1311                 script_metadata = {
1312                     "CURRENT_PROFILE": load_profile,
1313                     "PROFILE_FOLDER": scripts_path,
1314                     "MONITORS": ":".join(enabled_monitors(load_config)),
1315                 }
1316                 exec_scripts(scripts_path, "preswitch", script_metadata)
1317                 if "--debug" in options:
1318                     print("Going to run:")
1319                     apply_configuration(load_config, config, True)
1320                 apply_configuration(load_config, config, False)
1321                 exec_scripts(scripts_path, "postswitch", script_metadata)
1322         except AutorandrException as e:
1323             raise AutorandrException("Failed to apply profile '%s'" % load_profile, e, e.report_bug)
1324         except Exception as e:
1325             raise AutorandrException("Failed to apply profile '%s'" % load_profile, e, True)
1326
1327         if "--dry-run" not in options and "--debug" in options:
1328             new_config, _ = parse_xrandr_output()
1329             if not is_equal_configuration(new_config, load_config):
1330                 print("The configuration change did not go as expected:")
1331                 print_profile_differences(new_config, load_config)
1332
1333     sys.exit(0)
1334
1335
1336 def exception_handled_main(argv=sys.argv):
1337     try:
1338         main(sys.argv)
1339     except AutorandrException as e:
1340         print(e, file=sys.stderr)
1341         sys.exit(1)
1342     except Exception as e:
1343         if not len(str(e)):  # BdbQuit
1344             print("Exception: {0}".format(e.__class__.__name__))
1345             sys.exit(2)
1346
1347         print("Unhandled exception ({0}). Please report this as a bug at "
1348               "https://github.com/phillipberndt/autorandr/issues.".format(e),
1349               file=sys.stderr)
1350         raise
1351
1352
1353 if __name__ == '__main__':
1354     exception_handled_main()