#! /usr/bin/env python3 # -*- coding: utf-8 -*- """ Copyright 2020, Nils Hilbricht, Germany ( https://www.hilbricht.net ) This file is part of the Laborejo Software Suite ( https://www.laborejo.org ), This 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 3 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, see . """ import logging; logger = logging.getLogger(__name__); logger.info("import") import pathlib import configparser import subprocess import os import stat class SupportedProgramsDatabase(object): """Find all binaries. Use all available resources: xdg desktop files, binary string seach in executables, data bases, supplement with user choices. We generate the same format as configParser does with .desktop files as _sections dict. Example: { 'categories': 'AudioVideo;Audio;X-Recorders;X-Multitrack;X-Jack;', 'comment': 'Easy to use pattern sequencer for JACK and NSM', 'comment[de]': 'Einfach zu bedienender Pattern-Sequencer', 'exec': 'patroneo', 'genericname': 'Sequencer', 'icon': 'patroneo', 'name': 'Patroneo', 'startupnotify': 'false', 'terminal': 'false', 'type': 'Application', 'x-nsm-capable': 'true'} In case there is a file in PATH or database but has no .desktop we create our own entry with missing data. """ def __init__(self): self.blacklist = ("nsmd", "non-daw", "carla") self.morePrograms = ("thisdoesnotexisttest", "carla-rack", "carla-patchbay", "carla-jack-multi", "ardour5", "ardour6", "nsm-data", "nsm-jack") #only programs not found by buildCache_grepExecutablePaths because they are just shellscripts and do not contain /nsm/server/announce. self.userWhitelist = () #added dynamically to morePrograms self.userBlacklist = () #added dynamically to blacklist self.knownDesktopFiles = { #shortcuts to the correct desktop files. Reverse lookup binary->desktop creates false entries, for example ZynAddSubFx and Carla. "zynaddsubfx": "zynaddsubfx-jack.desktop", #value will later get replaced with the .desktop entry "carla-jack-multi" : "carla.desktop", } self.programs = [] #list of dicts. guaranteed keys: argodejoExec, name, argodejoFullPath. And probably others, like description and version. self.nsmExecutables = set() #set of executables for fast membership, if a GUI wants to know if they are available. Needs to be build "manually" with self.programs. no auto-property for a list. at least we don't want to do the work. #.build needs to be called from the api/GUI. #self.unfilteredExecutables = self.buildCache_unfilteredExecutables() #This doesn't take too long. we can start that every time. It will get updated in build as well. self.unfilteredExecutables = None #in build() #self.build() #fills self.programs and def buildCache_grepExecutablePaths(self): """return a list of executable names in the path Grep explained: -s silent. No errors, eventhough subprocess uses stdout only -R recursive with symlinks. We don't want to look in subdirs because that is not allowed by PATH and nsm, but we want to follow symlinks If you have a custom user path that does not mean that all its executables will automatically show up here. They still need to contain /nsm/server/announce Your binaries will be in unfilteredExecutables though """ result = [] executablePaths = [pathlib.Path(p) for p in os.environ["PATH"].split(os.pathsep)] for path in executablePaths: command = f"grep -iRsnl {path} -e /nsm/server/announce" #Py>=3.7 completedProcess = subprocess.run(command, capture_output=True, text=True, shell=True) completedProcess = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, shell=True) #universal_newlines is an alias for text, which was deprecated in 3.7 because text is more understandable. capture_output replaces the two PIPEs in 3.7 for fullPath in completedProcess.stdout.split(): exe = pathlib.Path(fullPath).relative_to(path) if not str(exe) in self.blacklist + self.userBlacklist: result.append((str(exe), str(fullPath))) for prg in self.morePrograms + self.userWhitelist: for path in executablePaths: if pathlib.Path(path, prg).is_file(): result.append((str(prg), str(pathlib.Path(path, prg)))) break #inner loop return result def buildCache_DesktopEntries(self): """Go through all dirs including subdirs""" xdgPaths = ( pathlib.Path("/usr/share/applications"), pathlib.Path("/usr/local/share/applications"), pathlib.Path(pathlib.Path.home(), ".local/share/applications"), ) config = configparser.ConfigParser() allDesktopEntries = [] for basePath in xdgPaths: for f in basePath.glob('**/*'): if f.is_file() and f.suffix == ".desktop": config.clear() config.read(f) entryDict = dict(config._sections["Desktop Entry"]) if f.name == "zynaddsubfx-jack.desktop": self.knownDesktopFiles["zynaddsubfx"] = entryDict elif f.name == "carla.desktop": self.knownDesktopFiles["carla-jack-multi"] = entryDict #in any case: allDesktopEntries.append(entryDict) #_sections 'DesktopEntry':{dictOfActualData) return allDesktopEntries def loadPrograms(self, listOfDicts): """Qt Settings will send us this""" self.programs = listOfDicts self.nsmExecutables = set(d["argodejoExec"] for d in self.programs) def build(self): """Can be called at any time by the user to update after installing new programs""" logger.info("Building launcher database. This might take a minute") self.programs = self._build() self.unfilteredExecutables = self.buildCache_unfilteredExecutables() self.nsmExecutables = set(d["argodejoExec"] for d in self.programs) self._buildWhitelist() logger.info("Building launcher database done.") def _exeToDesktopEntry(self, exe:str)->dict: """Assumes self.desktopEntries is up to date Convert one exe (not full path!) to one dict entry. """ if exe in self.knownDesktopFiles: #Shortcut through internal database entry = self.knownDesktopFiles[exe] else: #Reverse Search desktop files. for entry in self.desktopEntries: if "exec" in entry and exe.lower() in entry["exec"].lower(): return entry #else: #Foor loop ended. Did not find any matching desktop file return None def _build(self): self.executables = self.buildCache_grepExecutablePaths() self.desktopEntries = self.buildCache_DesktopEntries() leftovers = set(self.executables) matches = [] #list of dicts for exe, fullPath in self.executables: entry = self._exeToDesktopEntry(exe) if entry: #Found match! entry["argodejoFullPath"] = fullPath #We don't want .desktop syntax like "qmidiarp %F" entry["argodejoExec"] = exe matches.append(entry) try: leftovers.remove((exe,fullPath)) except KeyError: pass #Double entries like zyn-jack zyn-alsa etc. """ if exe in self.knownDesktopFiles: #Shortcut through internal database entry = self.knownDesktopFiles[exe] else: #Reverse Search desktop files. for entry in self.desktopEntries: if "exec" in entry and exe.lower() in entry["exec"].lower(): break #found entry. break inner loop to keep it else: #Foor loop ended. Did not find any matching desktop file #If we omit continue it will just write exe and fullPath in any desktop file. continue #Found match! entry["argodejoFullPath"] = fullPath #We don't want .desktop syntax like "qmidiarp %F" entry["argodejoExec"] = exe matches.append(entry) try: leftovers.remove((exe,fullPath)) except KeyError: pass #Double entries like zyn-jack zyn-alsa etc. """ for exe,fullPath in leftovers: pseudoEntry = {"name": exe.title(), "argodejoExec":exe, "argodejoFullPath":fullPath} matches.append(pseudoEntry) return matches def buildCache_unfilteredExecutables(self): def isexe(path): """executable by owner""" return path.is_file() and stat.S_IXUSR & os.stat(path)[stat.ST_MODE] == 64 result = [] executablePaths = [pathlib.Path(p) for p in os.environ["PATH"].split(os.pathsep)] for path in executablePaths: result += [str(pathlib.Path(f).relative_to(path)) for f in path.glob("*") if isexe(f)] return sorted(list(set(result))) def _buildWhitelist(self): """For reliable, fast and easy selection this is the whitelist. It will be populated from a template-list of well-working clients and then all binaries not in the path are filtered out. This can be presented to the user without worries.""" #Assumes to be called only from self.build startexecutables = set(("doesnotexist", "laborejo", "patroneo", "vico", "fluajho", "carla-rack", "carla-patchbay", "carla-jack-multi", "ardour6", "drumkv1_jack", "synthv1_jack", "padthv1_jack", "samplv1_jack", "zynaddsubfx", "ADLplug", "OPNplug", "non-mixer", "non-sequencer", "non-timeline") + self.userWhitelist) for prog in self.programs: prog["whitelist"] = prog["argodejoExec"] in startexecutables """ matches = [] for exe in startexecutables: entry = self._exeToDesktopEntry(exe) if entry: #Found match! #We don't want .desktop syntax like "qmidiarp %F" entry["argodejoExec"] = exe matches.append(entry) return matches """ programDatabase = SupportedProgramsDatabase()