from base64 import b64decode from datetime import datetime from itertools import groupby from pgpdump import BinaryData from django.db import models from django.db.models import Q from django.contrib.auth.models import User from django.contrib.sites.models import Site from django.utils.timezone import now from .fields import PositiveBigIntegerField from .utils import cache_function, set_created_field from packages.alpm import AlpmAPI class TodolistManager(models.Manager): def incomplete(self): return self.filter(todolistpkg__complete=False).order_by().distinct() class PackageManager(models.Manager): def flagged(self): """Used by dev dashboard.""" return self.filter(flag_date__isnull=False) def normal(self): return self.select_related('arch', 'repo') def restricted(self, user=None): qs = self.normal() if user is not None and user.is_authenticated: return qs return qs.filter(repo__staging=False) class Donor(models.Model): name = models.CharField(max_length=255, unique=True) visible = models.BooleanField(default=True, help_text="Should we show this donor on the public page?") created = models.DateTimeField() def __unicode__(self): return self.name class Meta: db_table = 'donors' ordering = ('name',) get_latest_by = 'when' class Arch(models.Model): name = models.CharField(max_length=255, unique=True) agnostic = models.BooleanField(default=False, help_text="Is this architecture non-platform specific?") def __unicode__(self): return self.name def __lt__(self, other): return self.name < other.name class Meta: db_table = 'arches' ordering = ['name'] verbose_name_plural = 'arches' class Repo(models.Model): name = models.CharField(max_length=255, unique=True) testing = models.BooleanField(default=False, help_text="Is this repo meant for package testing?") staging = models.BooleanField(default=False, help_text="Is this repo meant for package staging?") bugs_project = models.SmallIntegerField(default=1, help_text="Flyspray project ID for this repository.") bugs_category = models.SmallIntegerField(default=2, help_text="Flyspray category ID for this repository.") svn_root = models.CharField(max_length=64, help_text="SVN root (e.g. path) for this repository.") def __unicode__(self): return self.name def __lt__(self, other): return self.name < other.name class Meta: db_table = 'repos' ordering = ['name'] verbose_name_plural = 'repos' class Package(models.Model): repo = models.ForeignKey(Repo, related_name="packages", on_delete=models.PROTECT) arch = models.ForeignKey(Arch, related_name="packages", on_delete=models.PROTECT) pkgname = models.CharField(max_length=255) pkgbase = models.CharField(max_length=255, db_index=True) pkgver = models.CharField(max_length=255) pkgrel = models.CharField(max_length=255) epoch = models.PositiveIntegerField(default=0) pkgdesc = models.TextField(null=True) url = models.CharField(max_length=255, null=True) filename = models.CharField(max_length=255) compressed_size = PositiveBigIntegerField() installed_size = PositiveBigIntegerField() build_date = models.DateTimeField(null=True) last_update = models.DateTimeField(db_index=True) files_last_update = models.DateTimeField(null=True, blank=True) packager_str = models.CharField(max_length=255) packager = models.ForeignKey(User, null=True, on_delete=models.SET_NULL) pgp_signature = models.TextField(null=True, blank=True) flag_date = models.DateTimeField(null=True) objects = PackageManager() class Meta: db_table = 'packages' ordering = ('pkgname',) get_latest_by = 'last_update' unique_together = (('pkgname', 'repo', 'arch'),) def __unicode__(self): return self.pkgname @property def full_version(self): if self.epoch > 0: return u'%d:%s-%s' % (self.epoch, self.pkgver, self.pkgrel) return u'%s-%s' % (self.pkgver, self.pkgrel) def get_absolute_url(self): return '/packages/%s/%s/%s/' % (self.repo.name.lower(), self.arch.name, self.pkgname) def get_full_url(self, proto='https'): '''get a URL suitable for things like email including the domain''' domain = Site.objects.get_current().domain return '%s://%s%s' % (proto, domain, self.get_absolute_url()) @property @cache_function(15) def signature(self): try: data = b64decode(self.pgp_signature) except TypeError: return None data = BinaryData(data) packets = list(data.packets()) return packets[0] @property @cache_function(15) def signer(self): sig = self.signature if sig and sig.key_id: try: user = User.objects.get( userprofile__pgp_key__endswith=sig.key_id) except User.DoesNotExist: user = None return user return None _maintainers = None @property def maintainers(self): from packages.models import PackageRelation if self._maintainers is None: self._maintainers = User.objects.filter( package_relations__pkgbase=self.pkgbase, package_relations__type=PackageRelation.MAINTAINER) return self._maintainers @maintainers.setter def maintainers(self, maintainers): self._maintainers = maintainers @cache_function(1800) def applicable_arches(self): '''The list of (this arch) + (available agnostic arches).''' arches = set(Arch.objects.filter(agnostic=True)) arches.add(self.arch) return list(arches) @cache_function(119) def get_requiredby(self): """ Returns a list of package objects. An attempt will be made to keep this list slim by including the corresponding package in the same testing category as this package if that check makes sense. """ from packages.models import Depend provides = self.provides.all() provide_names = set(provide.name for provide in provides) provide_names.add(self.pkgname) requiredby = Depend.objects.select_related('pkg', 'pkg__arch', 'pkg__repo').filter( name__in=provide_names).order_by( 'pkg__pkgname', 'pkg__arch__name', 'pkg__repo__name') if not self.arch.agnostic: # make sure we match architectures if possible requiredby = requiredby.filter( pkg__arch__in=self.applicable_arches()) # if we can use ALPM, ensure our returned Depend objects abide by the # version comparison operators they may specify alpm = AlpmAPI() if alpm.available: new_rqd = [] for dep in requiredby: if not dep.comparison or not dep.version: # no comparisson/version, so always let it through new_rqd.append(dep) elif self.pkgname == dep.name: # depends on this package, so check it directly if alpm.compare_versions(self.full_version, dep.comparison, dep.version): new_rqd.append(dep) else: # it must be a provision of ours at this point for provide in (p for p in provides if p.name == dep.name): print(provide.version, dep.comparison, dep.version) if alpm.compare_versions(provide.version, dep.comparison, dep.version): new_rqd.append(dep) break requiredby = new_rqd # sort out duplicate packages; this happens if something has a double # versioned depend such as a kernel module requiredby = [list(vals)[0] for _, vals in groupby(requiredby, lambda x: x.pkg.id)] if len(requiredby) == 0: return requiredby # find another package by this name in a different testing or staging # repo; if we can't, we can short-circuit some checks repo_q = (Q(repo__testing=(not self.repo.testing)) | Q(repo__staging=(not self.repo.staging))) if not Package.objects.filter( repo_q, pkgname=self.pkgname, arch=self.arch ).exclude(id=self.id).exists(): # there isn't one? short circuit, all required by entries are fine return requiredby trimmed = [] # for each unique package name, try to screen our package list down to # those packages in the same testing and staging category (yes or no) # iff there is a package in the same testing and staging category. for _, dep_pkgs in groupby(requiredby, lambda x: x.pkg.pkgname): dep_pkgs = list(dep_pkgs) dep = dep_pkgs[0] if len(dep_pkgs) > 1: dep_pkgs = [d for d in dep_pkgs if d.pkg.repo.testing == self.repo.testing and d.pkg.repo.staging == self.repo.staging] if len(dep_pkgs) > 0: dep = dep_pkgs[0] trimmed.append(dep) return trimmed @cache_function(121) def get_depends(self): """ Returns a list of dicts. Each dict contains ('dep', 'pkg', and 'providers'). If it represents a found package both vars will be available; else pkg will be None if it is a 'virtual' dependency. If pkg is None and providers are known, they will be available in providers. Packages will match the testing status of this package if possible. """ deps = [] arches = None # TODO: we can use list comprehension and an 'in' query to make this more effective for dep in self.depends.all(): pkg = dep.get_best_satisfier() providers = None if not pkg: providers = dep.get_providers() deps.append({'dep': dep, 'pkg': pkg, 'providers': providers}) # sort the list; deptype sorting makes this tricker than expected sort_order = {'D': 0, 'O': 1, 'M': 2, 'C': 3} def sort_key(val): dep = val['dep'] return (sort_order.get(dep.deptype, 1000), dep.name) return sorted(deps, key=sort_key) @cache_function(123) def reverse_conflicts(self): """ Returns a list of packages with conflicts against this package. """ pkgs = Package.objects.filter(conflicts__name=self.pkgname) if not self.arch.agnostic: # make sure we match architectures if possible pkgs = pkgs.filter(arch__in=self.applicable_arches()) alpm = AlpmAPI() if not alpm.available: return pkgs # If we can use ALPM, we can filter out items that don't actually # conflict due to the version specification. pkgs = pkgs.prefetch_related('conflicts') new_pkgs = [] for package in pkgs: for conflict in package.conflicts.all(): if conflict.name != self.pkgname: continue if not conflict.comparison or not conflict.version \ or alpm.compare_versions(self.full_version, conflict.comparison, conflict.version): new_pkgs.append(package) return new_pkgs @cache_function(125) def base_package(self): """ Locate the base package for this package. It may be this very package, or if it was built in a way that the base package isn't real, will return None. """ try: # start by looking for something in this repo return Package.objects.normal().get(arch=self.arch, repo=self.repo, pkgname=self.pkgbase) except Package.DoesNotExist: # this package might be split across repos? find one # that matches the correct [testing] repo flag pkglist = Package.objects.normal().filter(arch=self.arch, repo__testing=self.repo.testing, repo__staging=self.repo.staging, pkgname=self.pkgbase) if len(pkglist) > 0: return pkglist[0] return None def split_packages(self): """ Return all packages that were built with this one (e.g. share a pkgbase value). The package this method is called on will never be in the list, and we will never return a package that does not have the same repo.testing and repo.staging flags. For any non-split packages, the return value will be an empty list. """ return Package.objects.normal().filter( arch__in=self.applicable_arches(), repo__testing=self.repo.testing, repo__staging=self.repo.staging, pkgbase=self.pkgbase).exclude(id=self.id) def flag_request(self): if self.flag_date is None: return None from packages.models import FlagRequest try: # Note that we don't match on pkgrel here; this is because a pkgrel # bump does not unflag a package so we can still show the same flag # request from a different pkgrel. request = FlagRequest.objects.filter(pkgbase=self.pkgbase, repo=self.repo, pkgver=self.pkgver, epoch=self.epoch).latest() return request except FlagRequest.DoesNotExist: return None def is_same_version(self, other): 'is this package similar, name and version-wise, to another' return self.pkgname == other.pkgname \ and self.pkgver == other.pkgver \ and self.pkgrel == other.pkgrel \ and self.epoch == other.epoch def in_testing(self): '''attempt to locate this package in a testing repo; if we are in a testing repo we will always return None.''' if self.repo.testing: return None try: return Package.objects.normal().get(repo__testing=True, pkgname=self.pkgname, arch=self.arch) except Package.DoesNotExist: return None def in_staging(self): '''attempt to locate this package in a staging repo; if we are in a staging repo we will always return None.''' if self.repo.staging: return None try: return Package.objects.normal().get(repo__staging=True, pkgname=self.pkgname, arch=self.arch) except Package.DoesNotExist: return None def elsewhere(self): '''attempt to locate this package anywhere else, regardless of architecture or repository. Excludes this package from the list.''' names = [self.pkgname] if self.pkgname.startswith('lib32-'): names.append(self.pkgname[6:]) elif self.pkgname.endswith('-multilib'): names.append(self.pkgname[:-9]) else: names.append('lib32-' + self.pkgname) names.append(self.pkgname + '-multilib') return Package.objects.normal().filter( pkgname__in=names).exclude(id=self.id).order_by( 'arch__name', 'repo__name') class PackageFile(models.Model): pkg = models.ForeignKey(Package) is_directory = models.BooleanField(default=False) directory = models.CharField(max_length=255) filename = models.CharField(max_length=255, null=True, blank=True) def __unicode__(self): return "%s%s" % (self.directory, self.filename or '') class Meta: db_table = 'package_files' class Todolist(models.Model): creator = models.ForeignKey(User, on_delete=models.PROTECT) name = models.CharField(max_length=255) description = models.TextField() date_added = models.DateTimeField(db_index=True) objects = TodolistManager() def __unicode__(self): return self.name _packages = None @property def packages(self): if not self._packages: # select_related() does not use LEFT OUTER JOIN for nullable # ForeignKey fields. That is why we need to explicitly list the # ones we want. self._packages = TodolistPkg.objects.select_related( 'pkg__repo', 'pkg__arch').filter(list=self).order_by('pkg') return self._packages @property def package_names(self): # depends on packages property returning a queryset return self.packages.values_list( 'pkg__pkgname', flat=True).order_by().distinct() class Meta: db_table = 'todolists' def get_absolute_url(self): return '/todo/%i/' % self.id def get_full_url(self, proto='https'): '''get a URL suitable for things like email including the domain''' domain = Site.objects.get_current().domain return '%s://%s%s' % (proto, domain, self.get_absolute_url()) class TodolistPkg(models.Model): list = models.ForeignKey(Todolist) pkg = models.ForeignKey(Package) complete = models.BooleanField(default=False) class Meta: db_table = 'todolist_pkgs' unique_together = (('list','pkg'),) def set_todolist_fields(sender, **kwargs): todolist = kwargs['instance'] if not todolist.date_added: todolist.date_added = now() # connect signals needed to keep cache in line with reality from main.utils import refresh_latest from django.db.models.signals import pre_save, post_save post_save.connect(refresh_latest, sender=Package, dispatch_uid="main.models") pre_save.connect(set_todolist_fields, sender=Todolist, dispatch_uid="main.models") pre_save.connect(set_created_field, sender=Donor, dispatch_uid="main.models") # vim: set ts=4 sw=4 et: