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import datetime
import json
from string import Template
from urllib import urlencode
from django.http import HttpResponse, Http404
from django.shortcuts import get_object_or_404, redirect, render
from django.utils.timezone import now
from main.models import Package, PackageFile, Arch, Repo
from mirrors.utils import get_mirror_url_for_download
from ..models import Update
from ..utils import get_group_info, PackageJSONEncoder
def split_package_details(request, name, repo, arch):
'''Check if we have a split package (e.g. pkgbase) value matching this
name. If so, we can show a listing page for the entire set of packages.'''
arches = [ arch ]
arches.extend(Arch.objects.filter(agnostic=True))
pkgs = Package.objects.normal().filter(pkgbase=name,
repo__testing=repo.testing, repo__staging=repo.staging,
arch__in=arches).order_by('pkgname')
if len(pkgs) == 0:
return None
# we have packages, but ensure at least one is in the given repo
if not any(True for pkg in pkgs if pkg.repo == repo):
return None
context = {
'list_title': 'Split Package Details',
'name': name,
'arch': arch,
'packages': pkgs,
}
return render(request, 'packages/packages_list.html', context)
CUTOFF = datetime.timedelta(days=60)
def recently_removed_package(request, name, repo, arch, cutoff=CUTOFF):
'''Check our packages update table to see if this package has existed in
this repo before. If so, we can show a 410 Gone page and point the
requester in the right direction.'''
arches = [ arch ]
arches.extend(Arch.objects.filter(agnostic=True))
match = Update.objects.select_related('arch', 'repo').filter(
pkgname=name, repo=repo, arch__in=arches)
if cutoff is not None:
when = now() - cutoff
match = match.filter(created__gte=when)
try:
update = match.latest()
elsewhere = update.elsewhere()
if len(elsewhere) == 1:
return redirect(elsewhere[0])
context = {
'update': update,
'elsewhere': elsewhere,
'name': name,
'version': update.old_version,
'arch': arch,
'repo': repo,
}
return render(request, 'packages/removed.html', context, status=410)
except Update.DoesNotExist:
return None
def replaced_package(request, name, repo, arch):
'''Check our package replacements to see if this is a package we used to
have but no longer do.'''
match = Package.objects.filter(replaces__name=name, repo=repo, arch=arch)
if len(match) == 1:
return redirect(match[0], permanent=True)
elif len(match) > 1:
context = {
'elsewhere': match,
'name': name,
'version': '',
'arch': arch,
'repo': repo,
}
return render(request, 'packages/removed.html', context, status=410)
return None
def redirect_agnostic(request, name, repo, arch):
'''For arch='any' packages, we can issue a redirect to them if we have a
single non-ambiguous option by changing the arch to match any arch-agnostic
package.'''
if not arch.agnostic:
# limit to 2 results, we only need to know whether there is anything
# except only one matching result
pkgs = Package.objects.select_related(
'arch', 'repo', 'packager').filter(pkgname=name,
repo=repo, arch__agnostic=True)[:2]
if len(pkgs) == 1:
return redirect(pkgs[0], permanent=True)
return None
def redirect_to_search(request, name, repo, arch):
pkg_data = [
('arch', arch.lower()),
('repo', repo.lower()),
('q', name),
]
# only include non-blank values in the query we generate
pkg_data = [(x, y.encode('utf-8')) for x, y in pkg_data if y]
return redirect("/packages/?%s" % urlencode(pkg_data))
def details(request, name='', repo='', arch=''):
if all([name, repo, arch]):
arch_obj = get_object_or_404(Arch, name=arch)
repo_obj = get_object_or_404(Repo, name__iexact=repo)
try:
pkg = Package.objects.select_related(
'arch', 'repo', 'packager').get(pkgname=name,
repo=repo_obj, arch=arch_obj)
return render(request, 'packages/details.html', {'pkg': pkg})
except Package.DoesNotExist:
# attempt a variety of fallback options before 404ing
options = (redirect_agnostic, split_package_details,
recently_removed_package, replaced_package)
for method in options:
ret = method(request, name, repo_obj, arch_obj)
if ret:
return ret
# we've tried everything at this point, nothing to see
raise Http404
else:
return redirect_to_search(request, name, repo, arch)
def groups(request, arch=None):
arches = []
if arch:
get_object_or_404(Arch, name=arch, agnostic=False)
arches.append(arch)
grps = get_group_info(arches)
context = {
'groups': grps,
'arch': arch,
}
return render(request, 'packages/groups.html', context)
def group_details(request, arch, name):
arch = get_object_or_404(Arch, name=arch)
arches = [ arch ]
arches.extend(Arch.objects.filter(agnostic=True))
pkgs = Package.objects.normal().filter(
groups__name=name, arch__in=arches).order_by('pkgname')
if len(pkgs) == 0:
raise Http404
context = {
'list_title': 'Group Details',
'name': name,
'arch': arch,
'packages': pkgs,
}
return render(request, 'packages/packages_list.html', context)
def files(request, name, repo, arch):
try:
pkg = Package.objects.get(pkgname=name,
repo__name__iexact=repo, arch__name=arch)
except Package.DoesNotExist:
# this may have been deleted recently, so follow the same logic as we
# do on the package details page if possible
ret = recently_removed_package(request, name, repo, arch)
if ret is not None:
return ret
raise Http404
# files are inserted in sorted order, so preserve that
fileslist = PackageFile.objects.filter(pkg=pkg).order_by('id')
dir_count = sum(1 for f in fileslist if f.is_directory)
files_count = len(fileslist) - dir_count
context = {
'pkg': pkg,
'files': fileslist,
'files_count': files_count,
'dir_count': dir_count,
}
template = 'packages/files.html'
return render(request, template, context)
def details_json(request, name, repo, arch):
pkg = get_object_or_404(Package,
pkgname=name, repo__name__iexact=repo, arch__name=arch)
to_json = json.dumps(pkg, ensure_ascii=False, cls=PackageJSONEncoder)
return HttpResponse(to_json, mimetype='application/json')
def files_json(request, name, repo, arch):
pkg = get_object_or_404(Package,
pkgname=name, repo__name__iexact=repo, arch__name=arch)
# files are inserted in sorted order, so preserve that
fileslist = PackageFile.objects.filter(pkg=pkg).order_by('id')
dir_count = sum(1 for f in fileslist if f.is_directory)
files_count = len(fileslist) - dir_count
data = {
'pkgname': pkg.pkgname,
'repo': pkg.repo.name.lower(),
'arch': pkg.arch.name.lower(),
'pkg_last_update': pkg.last_update,
'files_last_update': pkg.files_last_update,
'files_count': files_count,
'dir_count': dir_count,
'files': fileslist,
}
to_json = json.dumps(data, ensure_ascii=False, cls=PackageJSONEncoder)
return HttpResponse(to_json, mimetype='application/json')
def download(request, name, repo, arch):
pkg = get_object_or_404(Package,
pkgname=name, repo__name__iexact=repo, arch__name=arch)
url = get_mirror_url_for_download()
if not url:
raise Http404
arch = pkg.arch.name
if pkg.arch.agnostic:
# grab the first non-any arch to fake the download path
arch = Arch.objects.exclude(agnostic=True)[0].name
values = {
'host': url.url,
'arch': arch,
'repo': pkg.repo.name.lower(),
'file': pkg.filename,
}
url = Template('${host}${repo}/os/${arch}/${file}').substitute(values)
return redirect(url)
# vim: set ts=4 sw=4 et:
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