Improve proceedings display with new title block, configurable host logos, and additional PDF or URL materials. Fixes #3147. Commit ready for merge.

- Legacy-Id: 19306

docker/settings_local.py

@@ -32,6 +32,7 @@ INTERNET_ALL_DRAFTS_ARCHIVE_DIR = "test/archive/"
 RFC_PATH = "test/rfc/"
 
 AGENDA_PATH = 'data/developers/www6s/proceedings/'
+MEETINGHOST_LOGO_PATH = AGENDA_PATH
 
 USING_DEBUG_EMAIL_SERVER=True
 EMAIL_HOST='localhost'

ietf/doc/factories.py

@@ -439,3 +439,18 @@ class BofreqFactory(BaseDocumentFactory):
         else:
             obj.set_state(State.objects.get(type_id='bofreq',slug='proposed'))
 
+
+class ProceedingsMaterialDocFactory(BaseDocumentFactory):
+    type_id = 'procmaterials'
+    abstract = ''
+    expires = None
+
+    @factory.post_generation
+    def states(obj, create, extracted, **kwargs):
+        if not create:
+            return
+        if extracted:
+            for (state_type_id,state_slug) in extracted:
+                obj.set_state(State.objects.get(type_id=state_type_id,slug=state_slug))
+        else:
+            obj.set_state(State.objects.get(type_id='procmaterials', slug='active'))

ietf/doc/migrations/0044_procmaterials_states.py

@@ -0,0 +1,34 @@
+# Copyright The IETF Trust 2021 All Rights Reserved
+
+# Generated by Django 2.2.23 on 2021-05-21 13:29
+
+from django.db import migrations
+
+def forward(apps, schema_editor):
+    StateType = apps.get_model('doc', 'StateType')
+    State = apps.get_model('doc', 'State')
+
+    StateType.objects.create(slug='procmaterials', label='Proceedings Materials State')
+    active = State.objects.create(type_id='procmaterials', slug='active', name='Active', used=True, desc='The material is active', order=0)
+    removed = State.objects.create(type_id='procmaterials', slug='removed', name='Removed', used=True, desc='The material is removed', order=1)
+
+    active.next_states.set([removed])
+    removed.next_states.set([active])
+
+def reverse(apps, schema_editor):
+    StateType = apps.get_model('doc', 'StateType')
+    State = apps.get_model('doc', 'State')
+    State.objects.filter(type_id='procmaterials').delete()
+    StateType.objects.filter(slug='procmaterials').delete()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('doc', '0043_bofreq_docevents'),
+        ('name', '0030_add_procmaterials'),
+    ]
+
+    operations = [
+        migrations.RunPython(forward, reverse)
+    ]

ietf/doc/models.py

@@ -9,6 +9,8 @@ import os
 import rfc2html
 import time
 
+from typing import Optional, TYPE_CHECKING
+
 from django.db import models
 from django.core import checks
 from django.core.cache import caches
@@ -34,6 +36,9 @@ from ietf.utils.decorators import memoize
 from ietf.utils.validators import validate_no_control_chars
 from ietf.utils.mail import formataddr
 from ietf.utils.models import ForeignKey
+if TYPE_CHECKING:
+    # importing other than for type checking causes errors due to cyclic imports
+    from ietf.meeting.models import ProceedingsMaterial, Session
 
 logger = logging.getLogger('django')
 
@@ -129,10 +134,11 @@ class DocumentInfo(models.Model):
                             self._cached_file_path = settings.INTERNET_DRAFT_PATH
                         else:
                             self._cached_file_path = settings.INTERNET_ALL_DRAFTS_ARCHIVE_DIR
-            elif self.type_id in ("agenda", "minutes", "slides", "bluesheets") and self.meeting_related():
-                doc = self.doc if isinstance(self, DocHistory) else self
-                if doc.session_set.exists():
-                    meeting = doc.session_set.first().meeting
+            elif self.meeting_related() and self.type_id in (
+                    "agenda", "minutes", "slides", "bluesheets", "procmaterials"
+            ):
+                meeting = self.get_related_meeting()
+                if meeting is not None:
                     self._cached_file_path = os.path.join(meeting.get_materials_path(), self.type_id) + "/"
                 else:
                     self._cached_file_path = ""
@@ -160,8 +166,9 @@ class DocumentInfo(models.Model):
                         self._cached_base_name = "%s.txt" % self.canonical_name()
                     else:
                         self._cached_base_name = "%s-%s.txt" % (self.name, self.rev)
-            elif self.type_id in ["slides", "agenda", "minutes", "bluesheets", ] and self.meeting_related():
-                    self._cached_base_name = "%s-%s.txt" % (self.canonical_name(), self.rev) 
+            elif self.type_id in ["slides", "agenda", "minutes", "bluesheets", "procmaterials", ] and self.meeting_related():
+                ext = 'pdf' if self.type_id == 'procmaterials' else 'txt'
+                self._cached_base_name = f'{self.canonical_name()}-{self.rev}.{ext}'
             elif self.type_id == 'review':
                 # TODO: This will be wrong if a review is updated on the same day it was created (or updated more than once on the same day)
                 self._cached_base_name = "%s.txt" % self.name
@@ -218,7 +225,6 @@ class DocumentInfo(models.Model):
                     log.unreachable('2018-12-28')
                     pass
 
-
             if self.type_id in settings.DOC_HREFS and self.type_id in meeting_doc_refs:
                 if self.meeting_related():
                     self.is_meeting_related = True
@@ -239,16 +245,13 @@ class DocumentInfo(models.Model):
 
             if self.is_meeting_related:
                 if not meeting:
-                    # we need to do this because DocHistory items don't have
-                    # any session_set entry:
-                    doc = self.doc if isinstance(self, DocHistory) else self
-                    sess = doc.session_set.first()
-                    if not sess:
-                        return ""
-                    meeting = sess.meeting
+                    meeting = self.get_related_meeting()
+                    if meeting is None:
+                        return ''
+
                 # After IETF 96, meeting materials acquired revision
                 # handling, and the document naming changed.
-                if meeting.number.isdigit() and int(meeting.number) <= 96:
+                if meeting.proceedings_format_version == 1:
                     format = settings.MEETING_DOC_OLD_HREFS[self.type_id]
                 else:
                     # This branch includes interims
@@ -420,10 +423,44 @@ class DocumentInfo(models.Model):
         return e != None and (e.text != "")
 
     def meeting_related(self):
-        if self.type_id in ("agenda","minutes","bluesheets","slides","recording"):
+        if self.type_id in ("agenda","minutes","bluesheets","slides","recording","procmaterials"):
              return self.type_id != "slides" or self.get_state_slug('reuse_policy')=='single'
         return False
 
+    def get_related_session(self) -> Optional['Session']:
+        """Get the meeting session related to this document
+
+        Return None if there is no related session.
+        Must define this in DocumentInfo subclasses.
+        """
+        raise NotImplementedError(f'Class {self.__class__} must define get_related_session()')
+
+    def get_related_proceedings_material(self) -> Optional['ProceedingsMaterial']:
+        """Get the proceedings material related to this document
+
+        Return None if there is no related proceedings material.
+        Must define this in DocumentInfo subclasses.
+        """
+        raise NotImplementedError(f'Class {self.__class__} must define get_related_proceedings_material()')
+
+    def get_related_meeting(self):
+        """Get the meeting this document relates to"""
+        if not self.meeting_related():
+            return None  # no related meeting if not meeting_related!
+        elif self.type_id in ("agenda", "minutes", "slides", "bluesheets",):
+            # session-related
+            session = self.get_related_session()
+            if session is not None:
+                return session.meeting
+        elif self.type_id == "procmaterials":
+            # proceedings-related
+            material = self.get_related_proceedings_material()
+            if material is not None:
+                return material.meeting
+        else:
+            log.unreachable('2021-08-29')  # if meeting_related, there must be a way to retrieve the meeting!
+            return None
+
     def relations_that(self, relationship):
         """Return the related-document objects that describe a given relationship targeting self."""
         if isinstance(relationship, str):
@@ -713,6 +750,13 @@ class Document(DocumentInfo):
             self._cached_absolute_url = url
         return self._cached_absolute_url
 
+    def get_related_session(self):
+        sessions = self.session_set.all()
+        return sessions.first()
+
+    def get_related_proceedings_material(self):
+        return self.proceedingsmaterial_set.first()
+
     def file_tag(self):
         return "<%s>" % self.filename_with_rev()
 
@@ -1003,6 +1047,12 @@ class DocHistory(DocumentInfo):
     def __str__(self):
         return force_text(self.doc.name)
 
+    def get_related_session(self):
+        return self.doc.get_related_session()
+
+    def get_related_proceedings_material(self):
+        return self.doc.get_related_proceedings_material()
+
     def canonical_name(self):
         if hasattr(self, '_canonical_name'):
             return self._canonical_name

ietf/doc/views_doc.py

@@ -614,7 +614,7 @@ def document_main(request, name, rev=None):
 
     # TODO : Add "recording", and "bluesheets" here when those documents are appropriately
     #        created and content is made available on disk
-    if doc.type_id in ("slides", "agenda", "minutes", "bluesheets",):
+    if doc.type_id in ("slides", "agenda", "minutes", "bluesheets","procmaterials",):
         can_manage_material = can_manage_materials(request.user, doc.group)
         presentations = doc.future_presentations()
         if doc.uploaded_filename:
@@ -645,6 +645,16 @@ def document_main(request, name, rev=None):
                 t = "markdown"
             other_types.append((t, url))
 
+        # determine whether uploads are allowed
+        can_upload = can_manage_material and not snapshot
+        if doc.group is None:
+            can_upload = can_upload and (doc.type_id == 'procmaterials')
+        else:
+            can_upload = (
+                    can_upload
+                    and doc.group.features.has_nonsession_materials
+                    and doc.type_id in doc.group.features.material_types
+            )
         return render(request, "doc/document_material.html",
                                   dict(doc=doc,
                                        top=top,
@@ -654,7 +664,7 @@ def document_main(request, name, rev=None):
                                        latest_rev=latest_rev,
                                        snapshot=snapshot,
                                        can_manage_material=can_manage_material,
-                                       in_group_materials_types = doc.group and doc.group.features.has_nonsession_materials and doc.type_id in doc.group.features.material_types,
+                                       can_upload = can_upload,
                                        other_types=other_types,
                                        presentations=presentations,
                                        ))

ietf/doc/views_help.py

@@ -18,6 +18,7 @@ def state_help(request, type):
         "conflict-review": ("conflrev", "Conflict Review States"),
         "status-change": ("statchg", "RFC Status Change States"),
         "bofreq": ("bofreq", "BOF Request States"),
+        "procmaterials": ("procmaterials", "Proceedings Materials States"),
         }.get(type, (None, None))
     state_type = get_object_or_404(StateType, slug=slug)
 

ietf/doc/views_material.py

@@ -54,7 +54,7 @@ class UploadMaterialForm(forms.Form):
             self.fields["state"].widget = forms.HiddenInput()
             self.fields["state"].queryset = self.fields["state"].queryset.filter(slug="active")
             self.fields["state"].initial = self.fields["state"].queryset[0].pk
-            self.fields["name"].initial = "%s-%s-" % (doc_type.slug, group.acronym)
+            self.fields["name"].initial = self._default_name()
         else:
             del self.fields["name"]
 
@@ -69,6 +69,12 @@ class UploadMaterialForm(forms.Form):
                     if fieldname != action:
                         del self.fields[fieldname]
 
+        if doc_type.slug == 'procmaterials' and 'abstract' in self.fields:
+            del self.fields['abstract']
+
+    def _default_name(self):
+        return "%s-%s-" % (self.doc_type.slug, self.group.acronym)
+
     def clean_name(self):
         name = self.cleaned_data["name"].strip().rstrip("-")
 
@@ -101,10 +107,13 @@ def edit_material(request, name=None, acronym=None, action=None, doc_type=None):
         group = doc.group
         document_type = doc.type
 
-    if (document_type not in DocTypeName.objects.filter(slug__in=group.features.material_types)
-        and document_type.slug not in ['minutes','agenda','bluesheets',]):
+    valid_doctypes = ['procmaterials']
+    if group is not None:
+        valid_doctypes.extend(['minutes','agenda','bluesheets'])
+        valid_doctypes.extend(group.features.material_types)
+
+    if document_type.slug not in valid_doctypes:
         raise Http404
-       
 
     if not can_manage_materials(request.user, group):
         permission_denied(request, "You don't have permission to access this view")
@@ -186,10 +195,26 @@ def edit_material(request, name=None, acronym=None, action=None, doc_type=None):
     else:
         form = UploadMaterialForm(document_type, action, group, doc)
 
+    # decide where to go if upload is canceled
+    if doc:
+        back_href = urlreverse('ietf.doc.views_doc.document_main', kwargs={'name': doc.name})
+    else:
+        back_href = urlreverse('ietf.group.views.materials', kwargs={'acronym': group.acronym})
+
+    if document_type.slug == 'procmaterials':
+        name_prefix = 'proceedings-'
+    else:
+        name_prefix = f'{document_type.slug}-{group.acronym}-'
+
     return render(request, 'doc/material/edit_material.html', {
         'group': group,
         'form': form,
         'action': action,
-        'document_type': document_type,
+        'material_type': document_type,
+        'name_prefix': name_prefix,
+        'doc': doc,
         'doc_name': doc.name if doc else "",
+        'back_href': back_href,
     })
+
+

ietf/group/utils.py

@@ -125,7 +125,7 @@ def milestone_reviewer_for_group_type(group_type):
         return "Area Director"
 
 def can_manage_materials(user, group):
-    return has_role(user, 'Secretariat') or group.has_role(user, group.features.matman_roles)
+    return has_role(user, 'Secretariat') or (group is not None and group.has_role(user, group.features.matman_roles))
 
 def can_manage_session_materials(user, group, session):
     return has_role(user, 'Secretariat') or (group.has_role(user, group.features.matman_roles) and not session.is_material_submission_cutoff())

ietf/meeting/admin.py

@@ -6,7 +6,8 @@ from django.contrib import admin
 
 from ietf.meeting.models import (Meeting, Room, Session, TimeSlot, Constraint, Schedule,
     SchedTimeSessAssignment, ResourceAssociation, FloorPlan, UrlResource,
-    SessionPresentation, ImportantDate, SlideSubmission, SchedulingEvent, BusinessConstraint)
+    SessionPresentation, ImportantDate, SlideSubmission, SchedulingEvent, BusinessConstraint,
+    ProceedingsMaterial, MeetingHost)
 
 
 class UrlResourceAdmin(admin.ModelAdmin):
@@ -186,3 +187,17 @@ class SlideSubmissionAdmin(admin.ModelAdmin):
     raw_id_fields = ['submitter', 'session']
 
 admin.site.register(SlideSubmission, SlideSubmissionAdmin)
+
+
+class ProceedingsMaterialAdmin(admin.ModelAdmin):
+    model = ProceedingsMaterial
+    list_display = ['meeting', 'type', 'document']
+    raw_id_fields = ['meeting', 'document']
+admin.site.register(ProceedingsMaterial, ProceedingsMaterialAdmin)
+
+
+class MeetingHostAdmin(admin.ModelAdmin):
+    model = MeetingHost
+    list_display = ['name', 'meeting']
+    raw_id_fields = ['meeting']
+admin.site.register(MeetingHost, MeetingHostAdmin)

ietf/meeting/factories.py

@@ -8,10 +8,14 @@ import datetime
 
 from django.core.files.base import ContentFile
 
-from ietf.meeting.models import Meeting, Session, SchedulingEvent, Schedule, TimeSlot, SessionPresentation, FloorPlan, Room, SlideSubmission
-from ietf.name.models import ConstraintName, SessionStatusName
+from ietf.meeting.models import (Meeting, Session, SchedulingEvent, Schedule, TimeSlot, SessionPresentation,
+                                 FloorPlan, Room, SlideSubmission, MeetingHost, ProceedingsMaterial)
+from ietf.name.models import ConstraintName, SessionStatusName, ProceedingsMaterialTypeName
+from ietf.doc.factories import ProceedingsMaterialDocFactory
 from ietf.group.factories import GroupFactory
 from ietf.person.factories import PersonFactory
+from ietf.utils.text import xslugify
+
 
 class MeetingFactory(factory.django.DjangoModelFactory):
     class Meta:
@@ -220,3 +224,45 @@ class SlideSubmissionFactory(factory.django.DjangoModelFactory):
     make_file = factory.PostGeneration(
                     lambda obj, create, extracted, **kwargs: open(obj.staged_filepath(),'a').close()
                 )
+
+class MeetingHostFactory(factory.django.DjangoModelFactory):
+    class Meta:
+        model = MeetingHost
+
+    meeting = factory.SubFactory(MeetingFactory, type_id='ietf')
+    name = factory.Faker('company')
+    logo = factory.django.ImageField()  # generates an image
+
+
+def _pmf_doc_name(doc):
+    """Helper to generate document name for a ProceedingsMaterialFactory LazyAttribute"""
+    return 'proceedings-{number}-{slug}'.format(
+        number=doc.factory_parent.meeting.number,
+        slug=xslugify(doc.factory_parent.type.slug).replace("_", "-")[:128]
+    )
+
+class ProceedingsMaterialFactory(factory.django.DjangoModelFactory):
+    """Create a ProceedingsMaterial for testing
+
+    Note: if you want to specify a type, use type=ProceedingsMaterialTypeName.objects.get(slug='slug')
+    rather than the type_id='slug' shortcut. The latter will advance the Iterator used to generate
+    types. This value is then used by the document SubFactory to set the document's title. This will
+    not match the type of material created.
+    """
+    class Meta:
+        model = ProceedingsMaterial
+
+    meeting = factory.SubFactory(MeetingFactory, type_id='ietf')
+    type = factory.Iterator(ProceedingsMaterialTypeName.objects.filter(used=True))
+    # The SelfAttribute atnd LazyAttribute allow the document to be a SubFactory instead
+    # of a generic LazyAttribute. This allows other attributes on the document to be
+    # specified as document__external_url, etc.
+    document = factory.SubFactory(
+        ProceedingsMaterialDocFactory,
+        type_id='procmaterials',
+        title=factory.SelfAttribute('..type.name'),
+        name=factory.LazyAttribute(_pmf_doc_name),
+        uploaded_filename=factory.LazyAttribute(
+            lambda doc: f'{_pmf_doc_name(doc)}-{doc.rev}.pdf'
+        ))
+

ietf/meeting/migrations/0045_proceedingsmaterial.py

@@ -0,0 +1,30 @@
+# Copyright The IETF Trust 2021 All Rights Reserved
+
+# Generated by Django 2.2.24 on 2021-07-26 17:09
+
+from django.db import migrations, models
+import django.db.models.deletion
+import ietf.utils.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('name', '0028_proceedingsmaterialtypename'),
+        ('meeting', '0044_again_assign_correct_constraintnames'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ProceedingsMaterial',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('meeting', ietf.utils.models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='proceedings_materials', to='meeting.Meeting')),
+                ('type', ietf.utils.models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='name.ProceedingsMaterialTypeName')),
+                ('document', ietf.utils.models.ForeignKey(limit_choices_to={'type_id': 'procmaterials'}, on_delete=django.db.models.deletion.CASCADE, to='doc.Document', unique=True)),
+            ],
+            options={
+                'unique_together': {('meeting', 'type')},
+            },
+        ),
+    ]

ietf/meeting/migrations/0046_meetinghost.py

@@ -0,0 +1,34 @@
+# Generated by Django 2.2.24 on 2021-08-26 10:18
+
+from django.db import migrations, models
+import django.db.models.deletion
+import ietf.meeting.models
+import ietf.utils.fields
+import ietf.utils.models
+import ietf.utils.storage
+import ietf.utils.validators
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('meeting', '0045_proceedingsmaterial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='MeetingHost',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255)),
+                ('logo', ietf.utils.fields.MissingOkImageField(height_field='logo_height', storage=ietf.utils.storage.NoLocationMigrationFileSystemStorage(location=None), upload_to=ietf.meeting.models._host_upload_path, validators=[ietf.utils.validators.MaxImageSizeValidator(1600, 1600), ietf.utils.validators.WrappedValidator(ietf.utils.validators.validate_file_size, True), ietf.utils.validators.WrappedValidator(ietf.utils.validators.validate_file_extension, ['.png', '.jpg', '.jpeg']), ietf.utils.validators.WrappedValidator(ietf.utils.validators.validate_mime_type, ['image/jpeg', 'image/png'], True)], width_field='logo_width')),
+                ('logo_width', models.PositiveIntegerField(null=True)),
+                ('logo_height', models.PositiveIntegerField(null=True)),
+                ('meeting', ietf.utils.models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='meetinghosts', to='meeting.Meeting')),
+            ],
+            options={
+                'ordering': ('pk',),
+                'unique_together': {('meeting', 'name')},
+            },
+        ),
+    ]

ietf/meeting/models.py

@@ -8,9 +8,12 @@ import datetime
 import io
 import os
 import pytz
+import random
 import re
 import string
 
+from collections import namedtuple
+from pathlib import Path
 from urllib.parse import urljoin
 
 import debug                            # pyflakes:ignore
@@ -30,13 +33,22 @@ from ietf.dbtemplate.models import DBTemplate
 from ietf.doc.models import Document
 from ietf.group.models import Group
 from ietf.group.utils import can_manage_materials
-from ietf.name.models import MeetingTypeName, TimeSlotTypeName, SessionStatusName, ConstraintName, RoomResourceName, ImportantDateName, TimerangeName, SlideSubmissionStatusName
+from ietf.name.models import (
+    MeetingTypeName, TimeSlotTypeName, SessionStatusName, ConstraintName, RoomResourceName,
+    ImportantDateName, TimerangeName, SlideSubmissionStatusName, ProceedingsMaterialTypeName,
+)
 from ietf.person.models import Person
 from ietf.utils.decorators import memoize
 from ietf.utils.storage import NoLocationMigrationFileSystemStorage
 from ietf.utils.text import xslugify
 from ietf.utils.timezone import date2datetime
 from ietf.utils.models import ForeignKey
+from ietf.utils.validators import (
+    MaxImageSizeValidator, WrappedValidator, validate_file_size, validate_mime_type,
+    validate_file_extension,
+)
+from ietf.utils.fields import MissingOkImageField
+from ietf.utils.log import unreachable
 
 countries = list(pytz.country_names.items())
 countries.sort(key=lambda x: x[1])
@@ -219,6 +231,63 @@ class Meeting(models.Model):
         else:
             return None
 
+    def get_proceedings_materials(self):
+        """Get proceedings materials"""
+        return self.proceedings_materials.filter(
+            document__states__slug='active', document__states__type_id='procmaterials'
+        ).order_by('type__order')
+
+    def get_attendance(self):
+        """Get the meeting attendance from the MeetingRegistrations
+
+        Returns a NamedTuple with onsite and online attributes. Returns None if the record is unavailable
+        for this meeting.
+        """
+        number = self.get_number()
+        if number is None or number < 110:
+            return None
+        Attendance = namedtuple('Attendance', 'onsite online')
+        return Attendance(
+            onsite=Person.objects.filter(
+                meetingregistration__meeting=self,
+                meetingregistration__attended=True,
+                meetingregistration__reg_type__contains='in_person',
+            ).distinct().count(),
+            online=Person.objects.filter(
+                meetingregistration__meeting=self,
+                meetingregistration__attended=True,
+                meetingregistration__reg_type__contains='remote',
+            ).distinct().count(),
+        )
+
+    @property
+    def proceedings_format_version(self):
+        """Indicate version of proceedings that should be used for this meeting
+
+        Only makes sense for IETF meeting. Returns None for any meeting without a purely numeric number.
+
+        Uses settings.PROCEEDINGS_VERSION_CHANGES. Versions start at 1. Entries
+        in the array are the first meeting number using each version.
+        """
+        if not hasattr(self, '_proceedings_format_version'):
+            if not self.number.isdigit():
+                version = None  # no version for non-IETF meeting
+            else:
+                version = len(settings.PROCEEDINGS_VERSION_CHANGES)  # start assuming latest version
+                mtg_number = self.get_number()
+                if mtg_number is None:
+                    unreachable('2021-08-10')
+                else:
+                    # Find the index of the first entry in the version change array that
+                    # is >= this meeting's number. The first entry in the array is 0, so the
+                    # version is always >= 1 for positive meeting numbers.
+                    for vers, threshold in enumerate(settings.PROCEEDINGS_VERSION_CHANGES):
+                        if mtg_number < threshold:
+                            version = vers
+                            break
+            self._proceedings_format_version = version  # save this for later
+        return self._proceedings_format_version
+
     @property
     def session_constraintnames(self):
         """Gets a list of the constraint names that should be used for this meeting
@@ -1407,3 +1476,78 @@ class SlideSubmission(models.Model):
 
     def staged_url(self):
         return "".join([settings.SLIDE_STAGING_URL, self.filename])
+
+
+class ProceedingsMaterial(models.Model):
+    meeting = ForeignKey(Meeting, related_name='proceedings_materials')
+    document = ForeignKey(
+        Document,
+        limit_choices_to=dict(type_id='procmaterials'),
+        unique=True,
+    )
+    type = ForeignKey(ProceedingsMaterialTypeName)
+
+    class Meta:
+        unique_together = (('meeting', 'type'),)
+
+    def __str__(self):
+        return self.document.title
+
+    def get_href(self):
+        return f'{self.document.get_href(self.meeting)}'
+
+    def active(self):
+        return self.document.get_state().slug == 'active'
+
+    def is_url(self):
+        return len(self.document.external_url) > 0
+
+def _host_upload_path(instance : 'MeetingHost', filename):
+    """Compute filename relative to the storage location
+
+    Must live outside a class to allow migrations to deconstruct fields that use it
+    """
+    num = instance.meeting.number
+    path = (
+            Path(num) / 'meetinghosts' / f'logo-{"".join(random.choices(string.ascii_lowercase, k=10))}'
+    ).with_suffix(
+        Path(filename).suffix
+    )
+    return str(path)
+
+
+class MeetingHost(models.Model):
+    """Meeting sponsor"""
+    meeting = ForeignKey(Meeting, related_name='meetinghosts')
+    name = models.CharField(max_length=255, blank=False)
+    logo = MissingOkImageField(
+        storage=NoLocationMigrationFileSystemStorage(location=settings.MEETINGHOST_LOGO_PATH),
+        upload_to=_host_upload_path,
+        width_field='logo_width',
+        height_field='logo_height',
+        blank=False,
+        validators=[
+            MaxImageSizeValidator(
+                settings.MEETINGHOST_LOGO_MAX_UPLOAD_WIDTH,
+                settings.MEETINGHOST_LOGO_MAX_UPLOAD_HEIGHT,
+            ),
+            WrappedValidator(validate_file_size, True),
+            WrappedValidator(
+                validate_file_extension,
+                settings.MEETING_VALID_UPLOAD_EXTENSIONS['meetinghostlogo'],
+            ),
+            WrappedValidator(
+                validate_mime_type,
+                settings.MEETING_VALID_UPLOAD_MIME_TYPES['meetinghostlogo'],
+                True,
+            ),
+        ],
+    )
+    # These are filled in by the ImageField allow retrieval of image dimensions
+    # without processing the image each time it's loaded.
+    logo_width = models.PositiveIntegerField(null=True)
+    logo_height = models.PositiveIntegerField(null=True)
+
+    class Meta:
+        unique_together = (('meeting', 'name'),)
+        ordering = ('pk',)

ietf/meeting/resources.py

@@ -14,7 +14,7 @@ from ietf import api
 from ietf.meeting.models import ( Meeting, ResourceAssociation, Constraint, Room, Schedule, Session,
                                 TimeSlot, SchedTimeSessAssignment, SessionPresentation, FloorPlan,
                                 UrlResource, ImportantDate, SlideSubmission, SchedulingEvent,
-                                BusinessConstraint)
+                                BusinessConstraint, ProceedingsMaterial, MeetingHost)
 
 from ietf.name.resources import MeetingTypeNameResource
 class MeetingResource(ModelResource):
@@ -373,3 +373,42 @@ class BusinessConstraintResource(ModelResource):
             "penalty": ALL,
         }
 api.meeting.register(BusinessConstraintResource())
+
+
+from ietf.doc.resources import DocumentResource
+from ietf.name.resources import ProceedingsMaterialTypeNameResource
+class ProceedingsMaterialResource(ModelResource):
+    meeting          = ToOneField(MeetingResource, 'meeting')
+    document         = ToOneField(DocumentResource, 'document')
+    type             = ToOneField(ProceedingsMaterialTypeNameResource, 'type')
+    class Meta:
+        queryset = ProceedingsMaterial.objects.all()
+        serializer = api.Serializer()
+        cache = SimpleCache()
+        #resource_name = 'proceedingsmaterial'
+        ordering = ['id', ]
+        filtering = { 
+            "id": ALL,
+            "meeting": ALL_WITH_RELATIONS,
+            "document": ALL_WITH_RELATIONS,
+            "type": ALL_WITH_RELATIONS,
+        }
+api.meeting.register(ProceedingsMaterialResource())
+
+class MeetingHostResource(ModelResource):
+    meeting          = ToOneField(MeetingResource, 'meeting')
+    class Meta:
+        queryset = MeetingHost.objects.all()
+        serializer = api.Serializer()
+        cache = SimpleCache()
+        #resource_name = 'meetinghost'
+        ordering = ['id', ]
+        filtering = { 
+            "id": ALL,
+            "name": ALL,
+            "logo": ALL,
+            "logo_width": ALL,
+            "logo_height": ALL,
+            "meeting": ALL_WITH_RELATIONS,
+        }
+api.meeting.register(MeetingHostResource())

ietf/meeting/tests_js.py

@@ -25,7 +25,8 @@ from ietf.group import colors
 from ietf.person.models import Person
 from ietf.group.models import Group
 from ietf.group.factories import GroupFactory
-from ietf.meeting.factories import MeetingFactory, RoomFactory, SessionFactory, TimeSlotFactory
+from ietf.meeting.factories import ( MeetingFactory, RoomFactory, SessionFactory, TimeSlotFactory,
+                                     ProceedingsMaterialFactory )
 from ietf.meeting.test_data import make_meeting_test_data, make_interim_meeting
 from ietf.meeting.models import (Schedule, SchedTimeSessAssignment, Session,
                                  Room, TimeSlot, Constraint, ConstraintName,
@@ -2430,6 +2431,105 @@ class InterimTests(IetfSeleniumTestCase):
         )
 
 
+@ifSeleniumEnabled
+class ProceedingsMaterialTests(IetfSeleniumTestCase):
+    def setUp(self):
+        super().setUp()
+        self.wait = WebDriverWait(self.driver, 2)
+        self.meeting = MeetingFactory(type_id='ietf', number='123', date=datetime.date.today())
+
+    def test_add_proceedings_material(self):
+        url = self.absreverse(
+            'ietf.meeting.views_proceedings.upload_material',
+            kwargs=dict(num=self.meeting.number, material_type='supporters'),
+        )
+        self.login('secretary')
+        self.driver.get(url)
+
+        # get the UI elements
+        use_url_checkbox = self.wait.until(
+            expected_conditions.element_to_be_clickable((By.ID, 'id_use_url'))
+        )
+        choose_file_button = self.wait.until(
+            expected_conditions.presence_of_element_located((By.ID, 'id_file'))
+        )
+        external_url_field = self.wait.until(
+            expected_conditions.presence_of_element_located((By.ID, 'id_external_url'))
+        )
+
+        # should start with use_url unchecked for a new material
+        self.assertTrue(choose_file_button.is_displayed(),
+                        'File chooser should be shown by default')
+        self.assertFalse(external_url_field.is_displayed(),
+                         'URL field should be hidden by default')
+
+        # enable URL
+        use_url_checkbox.click()
+        self.wait.until(expected_conditions.invisibility_of_element(choose_file_button),
+                         'File chooser should be hidden when URL option is checked')
+        self.wait.until(expected_conditions.visibility_of(external_url_field),
+                        'URL field should appear when URL option is checked')
+
+        # disable URL
+        use_url_checkbox.click()
+        self.wait.until(expected_conditions.visibility_of(choose_file_button),
+                        'File chooser should appear when URL option is unchecked')
+        self.wait.until(expected_conditions.invisibility_of_element(external_url_field),
+                        'URL field should be hidden when URL option is unchecked')
+
+    def test_replace_proceedings_material_shows_correct_default(self):
+        doc_mat = ProceedingsMaterialFactory(meeting=self.meeting)
+        url_mat = ProceedingsMaterialFactory(meeting=self.meeting, document__external_url='https://example.com')
+
+        # check the document material
+        url = self.absreverse(
+            'ietf.meeting.views_proceedings.upload_material',
+            kwargs=dict(num=self.meeting.number, material_type=doc_mat.type.slug),
+        )
+        self.login('secretary')
+        self.driver.get(url)
+        use_url_checkbox = self.wait.until(
+            expected_conditions.element_to_be_clickable((By.ID, 'id_use_url'))
+        )
+        choose_file_button = self.wait.until(
+            expected_conditions.presence_of_element_located((By.ID, 'id_file'))
+        )
+        external_url_field = self.wait.until(
+            expected_conditions.presence_of_element_located((By.ID, 'id_external_url'))
+        )
+
+        # should start with use_url unchecked for a document material
+        self.assertFalse(use_url_checkbox.is_selected(), 'URL option should be unchecked for a document material')
+        self.assertTrue(choose_file_button.is_displayed(),
+                        'File chooser should be shown by default')
+        self.assertFalse(external_url_field.is_displayed(),
+                         'URL field should be hidden by default')
+
+        # check the URL material
+        url = self.absreverse(
+            'ietf.meeting.views_proceedings.upload_material',
+            kwargs=dict(num=self.meeting.number, material_type=url_mat.type.slug),
+        )
+        self.driver.get(url)
+
+        use_url_checkbox = self.wait.until(
+            expected_conditions.element_to_be_clickable((By.ID, 'id_use_url'))
+        )
+        choose_file_button = self.wait.until(
+            expected_conditions.presence_of_element_located((By.ID, 'id_file'))
+        )
+        external_url_field = self.wait.until(
+            expected_conditions.presence_of_element_located((By.ID, 'id_external_url'))
+        )
+
+        # should start with use_url unchecked for a document material
+        self.assertTrue(use_url_checkbox.is_selected(), 'URL option should be checked for URL material')
+        self.assertFalse(choose_file_button.is_displayed(),
+                         'File chooser should be hidden by default')
+        self.assertTrue(external_url_field.is_displayed(),
+                        'URL field should be shown by default')
+
+
 # The following are useful debugging tools
 
 # If you add this to a LiveServerTestCase and run just this test, you can browse

ietf/meeting/tests_models.py

@@ -0,0 +1,51 @@
+# Copyright The IETF Trust 2021, All Rights Reserved
+# -*- coding: utf-8 -*-
+"""Tests of models in the Meeting application"""
+from ietf.meeting.factories import MeetingFactory
+from ietf.stats.factories import MeetingRegistrationFactory
+from ietf.utils.test_utils import TestCase
+
+
+class MeetingTests(TestCase):
+    def test_get_attendance_pre110(self):
+        """Pre-110 meetings do not calculate attendance"""
+        meeting = MeetingFactory(type_id='ietf', number='109')
+        MeetingRegistrationFactory.create_batch(3, meeting=meeting, reg_type='')
+        MeetingRegistrationFactory.create_batch(4, meeting=meeting, reg_type='remote')
+        MeetingRegistrationFactory.create_batch(5, meeting=meeting, reg_type='in_person')
+        self.assertIsNone(meeting.get_attendance())
+
+    def test_get_attendance(self):
+        """Post-110 meetings do calculate attendance"""
+        meeting = MeetingFactory(type_id='ietf', number='110')
+
+        # start with attendees that should be ignored
+        MeetingRegistrationFactory.create_batch(3, meeting=meeting, reg_type='')
+        MeetingRegistrationFactory(meeting=meeting, reg_type='', attended=False)
+        attendance = meeting.get_attendance()
+        self.assertIsNotNone(attendance)
+        self.assertEqual(attendance.online, 0)
+        self.assertEqual(attendance.onsite, 0)
+
+        # add online attendees with at least one who registered but did not attend
+        MeetingRegistrationFactory.create_batch(4, meeting=meeting, reg_type='remote')
+        MeetingRegistrationFactory(meeting=meeting, reg_type='remote', attended=False)
+        attendance = meeting.get_attendance()
+        self.assertIsNotNone(attendance)
+        self.assertEqual(attendance.online, 4)
+        self.assertEqual(attendance.onsite, 0)
+
+        # and the same for onsite attendees
+        MeetingRegistrationFactory.create_batch(5, meeting=meeting, reg_type='in_person')
+        MeetingRegistrationFactory(meeting=meeting, reg_type='in_person', attended=False)
+        attendance = meeting.get_attendance()
+        self.assertIsNotNone(attendance)
+        self.assertEqual(attendance.online, 4)
+        self.assertEqual(attendance.onsite, 5)
+
+        # and once more after removing all the online attendees
+        meeting.meetingregistration_set.filter(reg_type='remote').delete()
+        attendance = meeting.get_attendance()
+        self.assertIsNotNone(attendance)
+        self.assertEqual(attendance.online, 0)
+        self.assertEqual(attendance.onsite, 5)

ietf/meeting/urls.py

@@ -4,7 +4,7 @@ from django.conf.urls import include
 from django.views.generic import RedirectView
 from django.conf import settings
 
-from ietf.meeting import views, ajax
+from ietf.meeting import views, ajax, views_proceedings
 from ietf.utils.urls import url
 
 safe_for_all_meeting_types = [
@@ -104,8 +104,21 @@ type_ietf_only_patterns_id_optional = [
     url(r'^proceedings/attendees/$', views.proceedings_attendees),
     url(r'^proceedings/overview/$', views.proceedings_overview),
     url(r'^proceedings/progress-report/$', views.proceedings_progress_report),
+    url(r'^proceedings/materials/$', views_proceedings.material_details),
+    url(r'^proceedings/materials/(?P<material_type>[a-z_]+)/$', views_proceedings.edit_material),
+    url(r'^proceedings/materials/(?P<material_type>[a-z_]+)/new/$', views_proceedings.upload_material),
+    url(r'^proceedings/materials/(?P<material_type>[a-z_]+)/remove/$',
+        views_proceedings.remove_restore_material,
+        {'action': 'remove'},
+        'ietf.meeting.views_proceedings.remove_material'),
+    url(r'^proceedings/materials/(?P<material_type>[a-z_]+)/restore/$',
+        views_proceedings.remove_restore_material,
+        {'action': 'restore'},
+        'ietf.meeting.views_proceedings.restore_material'),
     url(r'^important-dates/$', views.important_dates),
     url(r'^important-dates.(?P<output_format>ics)$', views.important_dates),
+    url(r'^proceedings/meetinghosts/edit/', views_proceedings.edit_meetinghosts),
+    url(r'^proceedings/meetinghosts/(?P<host_id>\d+)/logo/$', views_proceedings.meetinghost_logo),
 ]
 
 urlpatterns = [

ietf/meeting/views.py

@@ -87,7 +87,7 @@ from ietf.meeting.utils import diff_meeting_schedules, prefetch_schedule_diff_ob
 from ietf.meeting.utils import swap_meeting_schedule_timeslot_assignments
 from ietf.meeting.utils import preprocess_meeting_important_dates
 from ietf.message.utils import infer_message
-from ietf.name.models import SlideSubmissionStatusName
+from ietf.name.models import SlideSubmissionStatusName, ProceedingsMaterialTypeName
 from ietf.secr.proceedings.utils import handle_upload_file
 from ietf.secr.proceedings.proc_utils import (get_progress_stats, post_process, import_audio_files,
     create_recording)
@@ -173,9 +173,15 @@ def materials(request, num=None):
     for session_list in [plenaries, ietf, training, irtf, iab, other]:
         for session in session_list:
             session.past_cutoff_date = past_cutoff_date
-            
+
+    proceedings_materials = [
+        (type_name, meeting.proceedings_materials.filter(type=type_name).first())
+        for type_name in ProceedingsMaterialTypeName.objects.all()
+    ]
+
     return render(request, "meeting/materials.html", {
         'meeting': meeting,
+        'proceedings_materials': proceedings_materials,
         'plenaries': plenaries,
         'ietf': ietf,
         'training': training,
@@ -221,7 +227,7 @@ def materials_document(request, document, num=None, ext=None):
 
     if not doc.meeting_related():
         raise Http404("Not a meeting related document")
-    if not doc.session_set.filter(meeting__number=num).exists():
+    if doc.get_related_meeting() != meeting:
         raise Http404("No such document for meeting %s" % num)
     if not rev:
         filename = doc.get_file_name()
@@ -1639,7 +1645,7 @@ def agenda(request, num=None, name=None, base=None, ext=None, owner=None, utc=""
     meeting = get_ietf_meeting(num)
     if not meeting or (meeting.number.isdigit() and int(meeting.number) <= 64 and (not meeting.schedule or not meeting.schedule.assignments.exists())):
         if ext == '.html' or (meeting and meeting.number.isdigit() and 0 < int(meeting.number) <= 64):
-            return HttpResponseRedirect( 'https://www.ietf.org/proceedings/%s' % num )
+            return HttpResponseRedirect(f'{settings.PROCEEDINGS_V1_BASE_URL.format(meeting=meeting)}')
         else:
             raise Http404("No such meeting")
 
@@ -3790,8 +3796,9 @@ def proceedings(request, num=None):
 
     meeting = get_meeting(num)
 
-    if (meeting.number.isdigit() and int(meeting.number) <= 96):
-        return HttpResponseRedirect('https://www.ietf.org/proceedings/%s' % meeting.number)
+    # Early proceedings were hosted on www.ietf.org rather than the datatracker
+    if meeting.proceedings_format_version == 1:
+        return HttpResponseRedirect(settings.PROCEEDINGS_V1_BASE_URL.format(meeting=meeting))
 
     if not meeting.schedule or not meeting.schedule.assignments.exists():
         kwargs = dict()
@@ -3839,6 +3846,11 @@ def proceedings(request, num=None):
         'cor_cut_off_date': cor_cut_off_date,
         'submission_started': now > begin_date,
         'cache_version': cache_version,
+        'attendance': meeting.get_attendance(),
+        'meetinghost_logo': {
+            'max_height': settings.MEETINGHOST_LOGO_MAX_DISPLAY_HEIGHT,
+            'max_width': settings.MEETINGHOST_LOGO_MAX_DISPLAY_WIDTH,
+        }
     })
 
 @role_required('Secretariat')
@@ -3860,8 +3872,8 @@ def proceedings_acknowledgements(request, num=None):
     if not (num and num.isdigit()):
         raise Http404
     meeting = get_meeting(num)
-    if int(meeting.number) < settings.NEW_PROCEEDINGS_START:
-        return HttpResponseRedirect( 'https://www.ietf.org/proceedings/%s/acknowledgement.html' % num )
+    if meeting.proceedings_format_version == 1:
+        return HttpResponseRedirect( f'{settings.PROCEEDINGS_V1_BASE_URL.format(meeting=meeting)}/acknowledgement.html')
     return render(request, "meeting/proceedings_acknowledgements.html", {
         'meeting': meeting,
     })
@@ -3871,8 +3883,8 @@ def proceedings_attendees(request, num=None):
     if not (num and num.isdigit()):
         raise Http404
     meeting = get_meeting(num)
-    if int(meeting.number) < settings.NEW_PROCEEDINGS_START:
-        return HttpResponseRedirect( 'https://www.ietf.org/proceedings/%s/attendees.html' % num )
+    if meeting.proceedings_format_version == 1:
+        return HttpResponseRedirect(f'{settings.PROCEEDINGS_V1_BASE_URL.format(meeting=meeting)}/attendee.html')
     overview_template = '/meeting/proceedings/%s/attendees.html' % meeting.number
     try:
         template = render_to_string(overview_template, {})
@@ -3888,8 +3900,8 @@ def proceedings_overview(request, num=None):
     if not (num and num.isdigit()):
         raise Http404
     meeting = get_meeting(num)
-    if int(meeting.number) < settings.NEW_PROCEEDINGS_START:
-        return HttpResponseRedirect( 'https://www.ietf.org/proceedings/%s/overview.html' % num )
+    if meeting.proceedings_format_version == 1:
+        return HttpResponseRedirect(f'{settings.PROCEEDINGS_V1_BASE_URL.format(meeting=meeting)}/overview.html')
     overview_template = '/meeting/proceedings/%s/overview.rst' % meeting.number
     try:
         template = render_to_string(overview_template, {})
@@ -3906,8 +3918,8 @@ def proceedings_progress_report(request, num=None):
     if not (num and num.isdigit()):
         raise Http404
     meeting = get_meeting(num)
-    if int(meeting.number) < settings.NEW_PROCEEDINGS_START:
-        return HttpResponseRedirect( 'https://www.ietf.org/proceedings/%s/progress-report.html' % num )
+    if meeting.proceedings_format_version == 1:
+        return HttpResponseRedirect(f'{settings.PROCEEDINGS_V1_BASE_URL.format(meeting=meeting)}/progress-report.html')
     sdate = meeting.previous_meeting().date
     edate = meeting.date
     context = get_progress_stats(sdate,edate)

ietf/meeting/views_proceedings.py

@@ -0,0 +1,312 @@
+# Copyright The IETF Trust 2021 All Rights Reserved
+from pathlib import Path
+
+from django import forms
+from django.http import Http404, FileResponse, HttpResponseBadRequest
+from django.shortcuts import render, redirect, get_object_or_404
+
+import debug                            # pyflakes:ignore
+
+from ietf.doc.utils import add_state_change_event
+from ietf.doc.models import DocAlias, DocEvent, Document, NewRevisionDocEvent, State
+from ietf.ietfauth.utils import role_required
+from ietf.meeting.forms import FileUploadForm
+from ietf.meeting.models import Meeting, MeetingHost
+from ietf.meeting.helpers import get_meeting
+from ietf.name.models import ProceedingsMaterialTypeName
+from ietf.secr.proceedings.utils import handle_upload_file
+from ietf.utils.text import xslugify
+
+class UploadProceedingsMaterialForm(FileUploadForm):
+    use_url = forms.BooleanField(
+        required=False,
+        label='Use an external URL instead of uploading a document',
+    )
+    external_url = forms.URLField(
+        required=False,
+        help_text='External URL to link from the proceedings'
+    )
+    field_order = ['use_url', 'external_url']  # will precede superclass fields
+
+    class Media:
+        js = (
+            'ietf/js/upload-material.js',
+        )
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(doc_type='procmaterials', *args, **kwargs)
+        self.fields['file'].label = 'Select a file to upload. Allowed format{}: {}'.format(
+            '' if len(self.mime_types) == 1 else 's',
+            ', '.join(self.mime_types),
+        )
+        self.fields['file'].required = False
+
+    def clean_file(self):
+        if self.cleaned_data.get('file', None) is None:
+            return None  # bypass cleaning the file if none was provided
+        return super().clean_file()
+
+    def clean(self):
+        if self.cleaned_data['use_url']:
+            if not self.cleaned_data['external_url']:
+                self.add_error('external_url', 'This field is required')
+        else:
+            self.cleaned_data['external_url'] = None  # make sure this is empty
+            if self.cleaned_data['file'] is None:
+                self.add_error('file', 'This field is required')
+
+class EditProceedingsMaterialForm(forms.Form):
+    """Form to edit proceedings material properties"""
+    # A note: we use Document._meta to get the max length of a model field.
+    # The leading underscore makes this look like accessing a private member,
+    # but it is in fact part of Django's API.
+    # noinspection PyProtectedMember
+    title = forms.CharField(
+        help_text='Label that will appear on the proceedings page',
+        max_length=Document._meta.get_field("title").max_length,
+        required=True,
+    )
+
+
+def save_proceedings_material_doc(meeting, material_type, title, request, file=None, external_url=None, state=None):
+    events = []
+    by = request.user.person
+
+    if not (file is None or external_url is None):
+        raise ValueError('One of file or external_url must be None')
+
+    # doc naming duplicates naming of docs elsewhere - use dashes instead of underscores
+    doc_name = '-'.join([
+        'proceedings',
+        meeting.number,
+        xslugify(
+            getattr(material_type, 'slug', material_type)
+        ).replace('_', '-')[:128],
+    ])
+
+    created = False
+    doc = Document.objects.filter(type_id='procmaterials', name=doc_name).first()
+    if doc is None:
+        if file is None and external_url is None:
+            raise ValueError('Cannot create a new document without a file or external URL')
+        doc = Document.objects.create(
+            type_id='procmaterials',
+            name=doc_name,
+            rev="00",
+        )
+        created = True
+
+    # do this even if we did not create the document, just to be sure the alias exists
+    alias, _ = DocAlias.objects.get_or_create(name=doc.name)
+    alias.docs.add(doc)
+
+    if file:
+        if not created:
+            doc.rev = '{:02}'.format(int(doc.rev) + 1)
+        filename = f'{doc.name}-{doc.rev}{Path(file.name).suffix}'
+        save_error = handle_upload_file(file, filename, meeting, 'procmaterials', )
+        if save_error is not None:
+            raise RuntimeError(save_error)
+
+        doc.uploaded_filename = filename
+        doc.external_url = ''
+        e = NewRevisionDocEvent.objects.create(
+            type="new_revision",
+            doc=doc,
+            rev=doc.rev,
+            by=by,
+            desc="New version available: <b>%s-%s</b>" % (doc.name, doc.rev),
+        )
+        events.append(e)
+    elif (external_url is not None) and external_url != doc.external_url:
+        if not created:
+            doc.rev = '{:02}'.format(int(doc.rev) + 1)
+        doc.uploaded_filename = ''
+        doc.external_url = external_url
+        e = NewRevisionDocEvent.objects.create(
+            type="new_revision",
+            doc=doc,
+            rev=doc.rev,
+            by=by,
+            desc="Set external URL to <b>{}</b>".format(external_url),
+        )
+        events.append(e)
+
+    if doc.title != title and title is not None:
+        e = DocEvent(doc=doc, rev=doc.rev, by=by, type='changed_document')
+        e.desc = f'Changed title to <b>{title}</b>'
+        if doc.title:
+            e.desc += f' from {doc.title}'
+        e.save()
+        events.append(e)
+        doc.title = title
+
+    # Set the state and create a change event if necessary
+    prev_state = doc.get_state('procmaterials')
+    new_state = state if state is not None else State.objects.get(type_id='procmaterials', slug='active')
+    if prev_state != new_state:
+        if not created:
+            e = add_state_change_event(doc, by, prev_state, new_state)
+            events.append(e)
+        doc.set_state(new_state)
+
+    if events:
+        doc.save_with_history(events)
+
+    return doc
+
+
+@role_required('Secretariat')
+def upload_material(request, num, material_type):
+    meeting = get_meeting(num)
+
+    # turn the material_type slug into the actual instance
+    material_type = get_object_or_404(ProceedingsMaterialTypeName, slug=material_type)
+    material = meeting.proceedings_materials.filter(type=material_type).first()
+
+    if request.method == 'POST':
+        form = UploadProceedingsMaterialForm(request.POST, request.FILES)
+
+        if form.is_valid():
+            doc = save_proceedings_material_doc(
+                meeting,
+                material_type,
+                request=request,
+                file=form.cleaned_data.get('file', None),
+                external_url=form.cleaned_data.get('external_url', None),
+                title=str(material if material is not None else material_type),
+            )
+            if material is None:
+                meeting.proceedings_materials.create(type=material_type, document=doc)
+            return redirect('ietf.meeting.views_proceedings.material_details', num=num)
+    else:
+        initial = dict()
+        if material is not None:
+            ext_url = material.document.external_url
+            if ext_url != '':
+                initial['use_url'] = True
+                initial['external_url'] = ext_url
+        form = UploadProceedingsMaterialForm(initial=initial)
+
+    return render(request, 'meeting/proceedings/upload_material.html', {
+        'form': form,
+        'material': material,
+        'material_type': material_type,
+        'meeting': meeting,
+        'submit_button_label': 'Upload',
+    })
+
+@role_required('Secretariat')
+def material_details(request, num):
+    meeting = get_meeting(num)
+    proceedings_materials = [
+        (type_name, meeting.proceedings_materials.filter(type=type_name).first())
+        for type_name in ProceedingsMaterialTypeName.objects.all()
+    ]
+    return render(
+        request,
+        'meeting/proceedings/material_details.html',
+        dict(
+            meeting=meeting,
+            proceedings_materials=proceedings_materials,
+        )
+    )
+
+@role_required('Secretariat')
+def edit_material(request, num, material_type):
+    meeting = get_meeting(num)
+    material = meeting.proceedings_materials.filter(type_id=material_type).first()
+    if material is None:
+        raise Http404('No such material for this meeting')
+    if request.method == 'POST':
+        form = EditProceedingsMaterialForm(request.POST, request.FILES)
+        if form.is_valid():
+            save_proceedings_material_doc(
+                meeting,
+                material_type,
+                request=request,
+                title=form.cleaned_data['title'],
+            )
+            return redirect("ietf.meeting.views_proceedings.material_details", num=meeting.number)
+    else:
+        form = EditProceedingsMaterialForm(
+            initial=dict(
+                title=material.document.title,
+            ),
+        )
+
+    return render(request, 'meeting/proceedings/edit_material.html', {
+        'form': form,
+        'material': material,
+        'material_type': material.type,
+        'meeting': meeting,
+    })
+
+@role_required('Secretariat')
+def remove_restore_material(request, num, material_type, action):
+    """Remove or restore proceedings material"""
+    if action not in ['remove', 'restore']:
+        return HttpResponseBadRequest('Unsupported action')
+    meeting = get_meeting(num)
+    material = meeting.proceedings_materials.filter(type_id=material_type).first()
+    if material is None:
+        raise Http404('No such material for this meeting')
+    if request.method == 'POST':
+        prev_state = material.document.get_state('procmaterials')
+        new_state = State.objects.get(
+            type_id='procmaterials',
+            slug='active' if action == 'restore' else 'removed',
+        )
+        if new_state != prev_state:
+            material.document.set_state(new_state)
+            add_state_change_event(material.document, request.user.person, prev_state, new_state)
+        return redirect('ietf.meeting.views_proceedings.material_details', num=num)
+
+    return render(
+        request,
+        'meeting/proceedings/remove_restore_material.html',
+        dict(material=material, action=action)
+    )
+
+@role_required('Secretariat')
+def edit_meetinghosts(request, num):
+    meeting = get_meeting(num)
+
+    MeetingHostFormSet = forms.inlineformset_factory(
+        Meeting,
+        MeetingHost,
+        fields=('name', 'logo',),
+        extra=2,
+    )
+
+    if request.method == 'POST':
+        formset = MeetingHostFormSet(request.POST, request.FILES, instance=meeting)
+        if formset.is_valid():
+            # If we are removing a MeetingHost or replacing its logo, delete the
+            # old logo file.
+            for form in formset:
+                if form.instance.pk:
+                    deleted = form.cleaned_data.get('DELETE', False)
+                    logo_replaced = 'logo' in form.changed_data
+                    if deleted or logo_replaced:
+                        orig_instance = meeting.meetinghosts.get(pk=form.instance.pk)
+                        orig_instance.logo.delete()
+
+            # this will update the DB and add any newly uploaded files
+            formset.save()
+            return redirect('ietf.meeting.views.materials', num=meeting.number)
+    else:
+        formset = MeetingHostFormSet(instance=meeting)
+
+    return render(request, 'meeting/proceedings/edit_meetinghosts.html', {
+        'formset': formset,
+        'meeting': meeting,
+    })
+
+
+def meetinghost_logo(request, num, host_id):
+    host = get_object_or_404(MeetingHost, pk=host_id)
+    if host.meeting.number != num:
+        raise Http404()
+
+    return FileResponse(host.logo.open())

ietf/name/admin.py

@@ -11,7 +11,7 @@ from ietf.name.models import (
     ReviewRequestStateName, ReviewResultName, ReviewTypeName, RoleName, RoomResourceName,
     SessionStatusName, StdLevelName, StreamName, TimeSlotTypeName, TopicAudienceName,
     DocUrlTagName, ReviewAssignmentStateName, ReviewerQueuePolicyName, TimerangeName,
-    ExtResourceName, ExtResourceTypeName, SlideSubmissionStatusName)
+    ExtResourceName, ExtResourceTypeName, SlideSubmissionStatusName, ProceedingsMaterialTypeName)
 
 
 from ietf.stats.models import CountryAlias
@@ -52,6 +52,10 @@ class ExtResourceNameAdmin(NameAdmin):
     list_display = ["slug", "name", "type", "desc", "used",]
 admin.site.register(ExtResourceName,ExtResourceNameAdmin)
 
+class ProceedingsMaterialTypeNameAdmin(NameAdmin):
+    list_display = ["slug", "name", "desc", "used", "order",]
+admin.site.register(ProceedingsMaterialTypeName, ProceedingsMaterialTypeNameAdmin)
+
 admin.site.register(AgendaTypeName, NameAdmin)
 admin.site.register(BallotPositionName, NameAdmin)
 admin.site.register(ConstraintName, NameAdmin)

ietf/name/fixtures/names.json

@@ -2310,10 +2310,10 @@
       "desc": "The BOF request is proposed",
       "name": "Proposed",
       "next_states": [
-        159,
-        160,
-        161,
-        162
+        178,
+        179,
+        180,
+        181
       ],
       "order": 0,
       "slug": "proposed",
@@ -2321,7 +2321,7 @@
       "used": true
     },
     "model": "doc.state",
-    "pk": 158
+    "pk": 177
   },
   {
     "fields": {
@@ -2334,7 +2334,7 @@
       "used": true
     },
     "model": "doc.state",
-    "pk": 159
+    "pk": 178
   },
   {
     "fields": {
@@ -2347,7 +2347,7 @@
       "used": true
     },
     "model": "doc.state",
-    "pk": 160
+    "pk": 179
   },
   {
     "fields": {
@@ -2360,7 +2360,7 @@
       "used": true
     },
     "model": "doc.state",
-    "pk": 161
+    "pk": 180
   },
   {
     "fields": {
@@ -2373,7 +2373,37 @@
       "used": true
     },
     "model": "doc.state",
-    "pk": 162
+    "pk": 181
+  },
+  {
+    "fields": {
+      "desc": "The material is active",
+      "name": "Active",
+      "next_states": [
+        185
+      ],
+      "order": 0,
+      "slug": "active",
+      "type": "procmaterials",
+      "used": true
+    },
+    "model": "doc.state",
+    "pk": 184
+  },
+  {
+    "fields": {
+      "desc": "The material is removed",
+      "name": "Removed",
+      "next_states": [
+        184
+      ],
+      "order": 1,
+      "slug": "removed",
+      "type": "procmaterials",
+      "used": true
+    },
+    "model": "doc.state",
+    "pk": 185
   },
   {
     "fields": {
@@ -2508,6 +2538,13 @@
     "model": "doc.statetype",
     "pk": "minutes"
   },
+  {
+    "fields": {
+      "label": "Proceedings Materials State"
+    },
+    "model": "doc.statetype",
+    "pk": "procmaterials"
+  },
   {
     "fields": {
       "label": "State"
@@ -9993,6 +10030,17 @@
     "model": "name.doctypename",
     "pk": "minutes"
   },
+  {
+    "fields": {
+      "desc": "",
+      "name": "Proceedings Materials",
+      "order": 0,
+      "prefix": "proc-materials",
+      "used": true
+    },
+    "model": "name.doctypename",
+    "pk": "procmaterials"
+  },
   {
     "fields": {
       "desc": "",
@@ -11768,6 +11816,56 @@
     "model": "name.nomineepositionstatename",
     "pk": "pending"
   },
+  {
+    "fields": {
+      "desc": "Any other materials",
+      "name": "Additional Information",
+      "order": 4,
+      "used": true
+    },
+    "model": "name.proceedingsmaterialtypename",
+    "pk": "additional_information"
+  },
+  {
+    "fields": {
+      "desc": "Host speaker series",
+      "name": "Host Speaker Series",
+      "order": 1,
+      "used": true
+    },
+    "model": "name.proceedingsmaterialtypename",
+    "pk": "host_speaker_series"
+  },
+  {
+    "fields": {
+      "desc": "Social event",
+      "name": "Social Event",
+      "order": 2,
+      "used": true
+    },
+    "model": "name.proceedingsmaterialtypename",
+    "pk": "social_event"
+  },
+  {
+    "fields": {
+      "desc": "Sponsors and Supporters",
+      "name": "Sponsors and supporters",
+      "order": 0,
+      "used": true
+    },
+    "model": "name.proceedingsmaterialtypename",
+    "pk": "supporters"
+  },
+  {
+    "fields": {
+      "desc": "Meeting wiki",
+      "name": "Meeting Wiki",
+      "order": 3,
+      "used": true
+    },
+    "model": "name.proceedingsmaterialtypename",
+    "pk": "wiki"
+  },
   {
     "fields": {
       "desc": "The reviewer has accepted the assignment",

ietf/name/migrations/0028_proceedingsmaterialtypename.py

@@ -0,0 +1,29 @@
+# Copyright The IETF Trust 2021 All Rights Reserved
+
+# Generated by Django 2.2.24 on 2021-07-26 16:42
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('name', '0027_add_bofrequest'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ProceedingsMaterialTypeName',
+            fields=[
+                ('slug', models.CharField(max_length=32, primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=255)),
+                ('desc', models.TextField(blank=True)),
+                ('used', models.BooleanField(default=True)),
+                ('order', models.IntegerField(default=0)),
+            ],
+            options={
+                'ordering': ['order', 'name'],
+                'abstract': False,
+            },
+        ),
+    ]

ietf/name/migrations/0029_populate_proceedingsmaterialtypename.py

@@ -0,0 +1,34 @@
+# Copyright The IETF Trust 2021 All Rights Reserved
+
+# Generated by Django 2.2.24 on 2021-07-26 16:55
+
+from django.db import migrations
+
+
+def forward(apps, schema_editor):
+    ProceedingsMaterialTypeName = apps.get_model('name', 'ProceedingsMaterialTypeName')
+    names = [
+        {'slug': 'supporters', 'name': 'Sponsors and Supporters', 'desc': 'Sponsors and supporters', 'order': 0},
+        {'slug': 'host_speaker_series', 'name': 'Host Speaker Series', 'desc': 'Host speaker series', 'order': 1},
+        {'slug': 'social_event', 'name': 'Social Event', 'desc': 'Social event', 'order': 2},
+        {'slug': 'wiki', 'name': 'Meeting Wiki', 'desc': 'Meeting wiki', 'order': 3},
+        {'slug': 'additional_information', 'name': 'Additional Information', 'desc': 'Any other materials', 'order': 4},
+    ]
+    for name in names:
+        ProceedingsMaterialTypeName.objects.create(used=True, **name)
+
+
+def reverse(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('name', '0028_proceedingsmaterialtypename'),
+        ('meeting', '0046_meetinghost'),
+    ]
+
+    operations = [
+        migrations.RunPython(forward, reverse),
+    ]

ietf/name/migrations/0030_add_procmaterials.py

@@ -0,0 +1,42 @@
+# Copyright The IETF Trust 2021 All Rights Reserved
+
+# Generated by Django 2.2.24 on 2021-07-27 08:04
+
+from django.db import migrations
+
+
+def forward(apps, schema_editor):
+    DocTypeName = apps.get_model('name', 'DocTypeName')
+    DocTypeName.objects.create(
+        prefix='proc-materials',
+        slug='procmaterials',
+        name="Proceedings Materials",
+        desc="",
+        used=True,
+        order=0
+    )
+
+
+def reverse(apps, schema_editor):
+    DocTypeName = apps.get_model('name', 'DocTypeName')
+    DocTypeName.objects.filter(slug='procmaterials').delete()
+
+
+class Migration(migrations.Migration):
+    # Most of these dependencies are needed to permit the reverse migration
+    # to work. Without them Django does not replay enough migrations and during
+    # migration believes that there are foreign key references to the old
+    # PK (name)  on the Document model.
+    dependencies = [
+        ('doc', '0043_bofreq_docevents'),
+        ('group', '0044_populate_groupfeatures_parent_type_fields'),
+        ('liaisons', '0006_document_primary_key_cleanup'),
+        ('meeting', '0018_document_primary_key_cleanup'),
+        ('name', '0029_populate_proceedingsmaterialtypename'),
+        ('review', '0014_document_primary_key_cleanup'),
+        ('submit', '0008_submissionextresource'),
+    ]
+
+    operations = [
+        migrations.RunPython(forward, reverse)
+    ]

ietf/name/models.py

@@ -60,6 +60,8 @@ class BallotPositionName(NameModel):
     blocking = models.BooleanField(default=False)
 class MeetingTypeName(NameModel):
     """IETF, Interim"""
+class ProceedingsMaterialTypeName(NameModel):
+    """social_event, host_speaker_series, supporters, wiki, additional_information"""
 class AgendaTypeName(NameModel):
     """ietf, ad, side, workshop, ..."""
 class SessionStatusName(NameModel):

ietf/name/resources.py

@@ -18,7 +18,7 @@ from ietf.name.models import ( AgendaTypeName, BallotPositionName, ConstraintNam
     ReviewAssignmentStateName, ReviewRequestStateName, ReviewResultName, ReviewTypeName,
     RoleName, RoomResourceName, SessionStatusName, StdLevelName, StreamName, TimeSlotTypeName,
     TopicAudienceName, ReviewerQueuePolicyName, TimerangeName, ExtResourceTypeName, ExtResourceName,
-    SlideSubmissionStatusName)
+    SlideSubmissionStatusName, ProceedingsMaterialTypeName)
 
 class TimeSlotTypeNameResource(ModelResource):
     class Meta:
@@ -668,3 +668,19 @@ class SlideSubmissionStatusNameResource(ModelResource):
         }
 api.name.register(SlideSubmissionStatusNameResource())
 
+
+class ProceedingsMaterialTypeNameResource(ModelResource):
+    class Meta:
+        queryset = ProceedingsMaterialTypeName.objects.all()
+        serializer = api.Serializer()
+        cache = SimpleCache()
+        #resource_name = 'proceedingsmaterialtypename'
+        ordering = ['slug', ]
+        filtering = {
+            "slug": ALL,
+            "name": ALL,
+            "desc": ALL,
+            "used": ALL,
+            "order": ALL,
+        }
+api.name.register(ProceedingsMaterialTypeNameResource())

ietf/settings.py

@@ -669,6 +669,7 @@ BOFREQ_PATH = '/a/ietfdata/doc/bofreq/'
 CONFLICT_REVIEW_PATH = '/a/ietfdata/doc/conflict-review'
 STATUS_CHANGE_PATH = '/a/ietfdata/doc/status-change'
 AGENDA_PATH = '/a/www/www6s/proceedings/'
+MEETINGHOST_LOGO_PATH = AGENDA_PATH  # put these in the same place as other proceedings files
 IPR_DOCUMENT_PATH = '/a/www/ietf-ftp/ietf/IPR/'
 IESG_TASK_FILE = '/a/www/www6/iesg/internal/task.txt'
 IESG_ROLL_CALL_FILE = '/a/www/www6/iesg/internal/rollcall.txt'
@@ -702,6 +703,7 @@ DOC_HREFS = {
     "draft":    "https://www.ietf.org/archive/id/{doc.name}-{doc.rev}.txt",
     "rfc":      "https://www.rfc-editor.org/rfc/rfc{doc.rfcnum}.txt",
     "slides": "https://www.ietf.org/slides/{doc.name}-{doc.rev}",
+    "procmaterials": "https://www.ietf.org/procmaterials/{doc.name}-{doc.rev}",
     "conflrev": "https://www.ietf.org/cr/{doc.name}-{doc.rev}.txt",
     "statchg": "https://www.ietf.org/sc/{doc.name}-{doc.rev}.txt",
     "liaison": "%s{doc.uploaded_filename}" % LIAISON_ATTACH_URL,
@@ -885,6 +887,7 @@ MEETING_DOC_LOCAL_HREFS = {
     "slides": "/meeting/{meeting.number}/materials/{doc.name}-{doc.rev}",
     "recording": "{doc.external_url}",
     "bluesheets": "https://www.ietf.org/proceedings/{meeting.number}/bluesheets/{doc.uploaded_filename}",
+    "procmaterials": "/meeting/{meeting.number}/materials/{doc.name}-{doc.rev}",
 }
 
 MEETING_DOC_CDN_HREFS = {
@@ -893,6 +896,7 @@ MEETING_DOC_CDN_HREFS = {
     "slides": "https://www.ietf.org/proceedings/{meeting.number}/slides/{doc.name}-{doc.rev}",
     "recording": "{doc.external_url}",
     "bluesheets": "https://www.ietf.org/proceedings/{meeting.number}/bluesheets/{doc.uploaded_filename}",
+    "procmaterials": "https://www.ietf.org/proceedings/{meeting.number}/procmaterials/{doc.name}-{doc.rev}",
 }
 
 MEETING_DOC_HREFS = MEETING_DOC_LOCAL_HREFS if MEETING_MATERIALS_SERVE_LOCALLY else MEETING_DOC_CDN_HREFS
@@ -912,6 +916,7 @@ MEETING_DOC_GREFS = {
     "slides": "/meeting/{meeting.number}/materials/{doc.name}",
     "recording": "{doc.external_url}",
     "bluesheets": "https://www.ietf.org/proceedings/{meeting.number}/bluesheets/{doc.uploaded_filename}",
+    "procmaterials": "/meeting/{meeting.number}/materials/{doc.name}",
 }
 
 MEETING_MATERIALS_DEFAULT_SUBMISSION_START_DAYS = 90
@@ -923,6 +928,8 @@ MEETING_VALID_UPLOAD_EXTENSIONS = {
     'minutes':      ['.txt','.html','.htm', '.md', '.pdf', ],
     'slides':       ['.doc','.docx','.pdf','.ppt','.pptx','.txt', ], # Note the removal of .zip
     'bluesheets':   ['.pdf', '.txt', ],
+    'procmaterials':['.pdf', ],
+    'meetinghostlogo':  ['.png', '.jpg', '.jpeg'],
 }
     
 MEETING_VALID_UPLOAD_MIME_TYPES = {
@@ -930,6 +937,8 @@ MEETING_VALID_UPLOAD_MIME_TYPES = {
     'minutes':      ['text/plain', 'text/html', 'application/pdf', 'text/markdown', 'text/x-markdown', ],
     'slides':       [],
     'bluesheets':   ['application/pdf', 'text/plain', ],
+    'procmaterials':['application/pdf', ],
+    'meetinghostlogo':  ['image/jpeg', 'image/png', ],
 }
 
 MEETING_VALID_MIME_TYPE_EXTENSIONS = {
@@ -953,6 +962,14 @@ FLOORPLAN_DIR = os.path.join(MEDIA_ROOT, FLOORPLAN_MEDIA_DIR)
 
 MEETING_USES_CODIMD_DATE = datetime.date(2020,7,6)
 
+# Maximum dimensions to accept at all
+MEETINGHOST_LOGO_MAX_UPLOAD_WIDTH = 400
+MEETINGHOST_LOGO_MAX_UPLOAD_HEIGHT = 400
+
+# Maximum dimensions to display
+MEETINGHOST_LOGO_MAX_DISPLAY_WIDTH = 120
+MEETINGHOST_LOGO_MAX_DISPLAY_HEIGHT = 120
+
 # Session assignments on the official schedule lock this long before the timeslot starts
 MEETING_SESSION_LOCK_TIME = datetime.timedelta(minutes=10)
 
@@ -994,7 +1011,12 @@ SECR_PROCEEDINGS_DIR = '/a/www/www6s/proceedings/'
 SECR_PPT2PDF_COMMAND = ['/usr/bin/soffice','--headless','--convert-to','pdf:writer_globaldocument_pdf_Export','--outdir']
 SECR_VIRTUAL_MEETINGS = ['108']
 STATS_REGISTRATION_ATTENDEES_JSON_URL = 'https://registration.ietf.org/{number}/attendees/'
-NEW_PROCEEDINGS_START = 95
+PROCEEDINGS_VERSION_CHANGES = [
+    0,   # version 1
+    97,  # version 2: meeting 97 and later (was number was NEW_PROCEEDINGS_START)
+    111, # version 3: meeting 111 and later
+]
+PROCEEDINGS_V1_BASE_URL = 'https://www.ietf.org/proceedings/{meeting.number}'
 YOUTUBE_API_KEY = ''
 YOUTUBE_API_SERVICE_NAME = 'youtube'
 YOUTUBE_API_VERSION = 'v3'

ietf/static/ietf/js/upload-material.js

@@ -0,0 +1,60 @@
+// Copyright The IETF Trust 2021, All Rights Reserved
+(
+  function () {
+    'use strict';
+
+    /**
+     * Hide the inactive input form-group
+     * @param form form to process
+     */
+    function showUrlOrFile(form) {
+      const useUrlInput = form.elements.namedItem('use_url');
+      const urlGroup = form.elements.namedItem('external_url').closest('.form-group');
+      const fileGroup = form.elements.namedItem('file').closest('.form-group');
+
+      if (useUrlInput.checked) {
+        urlGroup.hidden = false;
+        fileGroup.hidden = true;
+      } else {
+        urlGroup.hidden = true;
+        fileGroup.hidden = false;
+      }
+    }
+
+    /**
+     * Dispatch showUrlOrFile from a UI event on the enclosing form
+     * @param evt change event instance
+     */
+    function handleFormChange(evt) {
+      showUrlOrFile(evt.currentTarget); // currentTarget is the form
+    }
+
+    /**
+     * Clear hidden file input values before submitting form to avoid
+     * needlessly sending a file when use_url is selected
+     * @param evt submit event instance
+     */
+    function handleFormSubmit(evt) {
+      const form = evt.currentTarget;
+      const fileInput = form.elements.namedItem('file');
+      if (fileInput.hidden) {
+        fileInput.value = '';
+      }
+    }
+
+    /**
+     * Register event handlers and other initialization tasks.
+     */
+    function initialize() {
+      const forms = document.querySelectorAll('form.upload-material');
+      for (let i = 0; i < forms.length; i++) {
+        const form = forms[i];
+        form.addEventListener('change', handleFormChange);
+        form.addEventListener('submit', handleFormSubmit);
+        showUrlOrFile(form);
+      }
+    }
+
+    initialize();
+  }
+)();

ietf/templates/doc/document_material.html

@@ -35,9 +35,10 @@
       <th class="col-md-1">{% if doc.meeting_related %}Meeting{% endif %} {{ doc.type.name }}</th>
       <td class="edit col-md-1"></td>
       <td class="col-md-10">
-        {{ doc.group.name }}
-        <a href="{{ doc.group.about_url }}">({{ doc.group.acronym }})</a> {{ doc.group.type.name }}
-
+        {% if doc.group %}
+          {{ doc.group.name }}
+          <a href="{{ doc.group.about_url }}">({{ doc.group.acronym }})</a> {{ doc.group.type.name }}
+        {% endif %}
         {% if snapshot %}
           <span class="label label-warning">Snapshot</span>
         {% endif %}
@@ -88,25 +89,37 @@
       </tr>
     {% endif %}
 
-    {% if presentations or can_manage_material %}
+    {% if doc.type_id == 'procmaterials' and doc.external_url|length > 0 %}
       <tr>
-        <th>On agenda</th>
-        <td class="edit">
-          {% if not snapshot and can_manage_material %}
-            {% doc_edit_button "ietf.doc.views_doc.all_presentations" name=doc.name %}
-          {% endif %}
-        </td>
-
+        <th>External URL</th>
+        <td class="edit"></td>
         <td>
-          {% if presentations %}
-            {% for pres in presentations %}{{ pres.session.short_name }} at {{ pres.session.meeting }} {% if pres.rev != doc.rev %}(version -{{ pres.rev }}){% endif %}{% if not forloop.last %}, {% endif %}{% endfor %}
-          {% else %}
-            None
-          {% endif %}
+          <a href="{{ doc.external_url }}">{{ doc.external_url }}</a>
         </td>
       </tr>
     {% endif %}
 
+    {% if doc.type_id != 'procmaterials' %}
+      {% if presentations or can_manage_material %}
+        <tr>
+          <th>On agenda</th>
+          <td class="edit">
+            {% if not snapshot and can_manage_material %}
+              {% doc_edit_button "ietf.doc.views_doc.all_presentations" name=doc.name %}
+            {% endif %}
+          </td>
+
+          <td>
+            {% if presentations %}
+              {% for pres in presentations %}{{ pres.session.short_name }} at {{ pres.session.meeting }} {% if pres.rev != doc.rev %}(version -{{ pres.rev }}){% endif %}{% if not forloop.last %}, {% endif %}{% endfor %}
+            {% else %}
+              None
+            {% endif %}
+          </td>
+        </tr>
+      {% endif %}
+    {% endif %}
+
     <tr>
       <th>Last updated</th>
       <td class="edit"></td>
@@ -116,7 +129,7 @@
   </table>
 
   <p class="buttonlist">
-    {% if not snapshot and can_manage_material and in_group_materials_types %}
+    {% if can_upload %}
       <a class="btn btn-default" href="{% url 'ietf.doc.views_material.edit_material' name=doc.name action="revise" %}">Upload New Revision</a>
     {% endif %}
   </p>

ietf/templates/doc/material/edit_material.html

@@ -4,25 +4,54 @@
 
 {% load bootstrap3 %}
 
-{% block title %}{% if action == "new" or action == "revise" %}Upload{% else %}Edit{% endif %} {{ document_type.name }} for group {{ group.name }} ({{ group.acronym }}){% endblock %}
+{% block title %}
+  {% if action == "new" or action == "revise" %}
+    Upload
+  {% else %}
+    Edit
+  {% endif %}
+  {{ doc.type.name }} for
+  {% if group is not None %}group {{ group.name }} ({{ group.acronym }})
+  {% elif doc.meeting_related %}{{ doc.get_related_meeting }} {% endif %}
+{% endblock %}
 
 {% block content %}
   {% origin %}
 
-  <h1>{% if action == "new" or action == "revise" %}Upload{% else %}Edit{% endif %} {{ document_type.name }}<br><small>{{ group.name }} ({{ group.acronym }})</small></h1>
+  <h1>
+    {% if action == "new" or action == "revise" %}
+      Upload
+    {% else %}
+      Edit
+    {% endif %}
+    {{ doc.type.name }}
+    <br><small>
+    {% if group is not None %}{{ group.name }} ({{ group.acronym }})
+    {% elif doc.meeting_related %}{{ doc.get_related_meeting }}
+      {% if doc.get_related_proceedings_material %} {{ doc.get_related_proceedings_material }}{% endif %}
+    {% endif %}
+  </small></h1>
 
   {% if action == "new" %}
     <p class="help-block">
-      Below you can upload a document for the group {{ group.name }}
-      <a href="{% url "ietf.group.views.materials" acronym=group.acronym %}">({{ group.acronym }})</a>.
-      The document will appear under the materials tab in the group pages.
+      {% if group is not None %}
+        Below you can upload a document for the group {{ group.name }}
+        <a href="{% url "ietf.group.views.materials" acronym=group.acronym %}">({{ group.acronym }})</a>.
+        The document will appear under the materials tab in the group pages.
+      {% elif doc.meeting_related %}
+        Below you can upload a document for the {{ doc.get_related_meeting }} meeting.
+      {% endif %}
     </p>
 
     <h2>Upload</h2>
   {% elif action == "revise" %}
     <p>
-      Below you can upload a new revision of {{ doc_name }} for the group {{ group.name }}
-      <a href="{% url "ietf.group.views.materials" acronym=group.acronym %}">({{ group.acronym }})</a>.
+      {% if group is not None %}
+        Below you can upload a new revision of {{ doc_name }} for the group {{ group.name }}
+        <a href="{% url "ietf.group.views.materials" acronym=group.acronym %}">({{ group.acronym }})</a>.
+      {% elif doc.meeting_related %}
+        Below you can upload a new revision of {{ doc_name }} for the {{ doc.get_related_meeting }} meeting.
+      {% endif %}
     </p>
 
     <h2>Upload New Revision</h2>

ietf/templates/meeting/materials.html

@@ -29,6 +29,7 @@
 
       <p>
         {% if user|has_role:"Secretariat" %}
+          <a class="btn btn-default" href="{% url 'ietf.meeting.views_proceedings.edit_meetinghosts' num=meeting.number %}">Edit meeting hosts</a>
           <a class="btn btn-default" href="{% url 'ietf.secr.proceedings.views.main' %}">Secretariat proceedings functions</a>
           {% if meeting.end_date.today > meeting.end_date %}
             <a class="btn btn-default" href="{% url 'ietf.meeting.views.request_minutes' num=meeting.number %}">Send request for minutes</a>
@@ -37,6 +38,8 @@
         <a class="btn btn-default" href="/meeting/{{meeting.number}}/requests">Meeting requests/conflicts</a>
       </p>
 
+      {% include 'meeting/proceedings/materials_table.html' with meeting=meeting proceedings_materials=proceedings_materials user=user only %}
+
       {% with "True" as show_agenda %}
 	<!-- Plenaries -->
 	{% if plenaries %}

ietf/templates/meeting/proceedings.html

@@ -4,6 +4,45 @@
 
 {% load ietf_filters static %}
 
+{% block morecss %}
+  .proceedings-title {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    margin-bottom: 2rem;
+    font-size: 1.8rem;
+  }
+  .proceedings-title > h1 {font-size: xx-large; margin-bottom: 0;}
+  .proceedings-date {font-size: x-large;}
+  .proceedings-intro {
+    font-size: large;
+    display: flex;
+    justify-content:
+    space-around;
+    margin-bottom: 2rem;
+    padding-bottom: 1rem;
+  }
+  .proceedings-intro.with-divider {border-bottom-style: solid; border-width: 1px;}
+  .proceedings-intro > .proceedings-column {display: flex; flex-direction: column;}
+  .proceedings-intro > .proceedings-column > .proceedings-row {display: flex;}
+  .finalize-button {position: absolute; top: 0; right: 0;}
+  .proceedings-intro .host-logo {
+    max-height: {{ meetinghost_logo.max_height }}px;
+    max-width: {{ meetinghost_logo.max_width }}px;
+    overflow: hidden;
+    margin: 0 0 0 1rem;
+  }
+  {# Resize logo so longest edge matches the display size, maintaining aspect ratio. #}
+  {% widthratio meetinghost_logo.max_width meetinghost_logo.max_height 1 as displayed_aspect %}
+  {% for host in meeting.meetinghosts.all %}
+    {% widthratio host.logo.width host.logo.height 1 as logo_aspect %}
+    .host-logo img.host{{ forloop.counter }}  {
+      {% if logo_aspect > displayed_aspect %}width: 100%; height: auto;{% else %}width: auto; height: 100%;{% endif %}
+    }
+  {% endfor %}
+{% endblock %}
+
 {% block pagehead %}
 <link rel="stylesheet" href="{% static "jquery.tablesorter/css/theme.bootstrap.min.css" %}">
 {% endblock %}
@@ -17,26 +56,19 @@
   <div class="row">
     <div class="col-md-10">
 
-      <h1>IETF {{ meeting.number }} {% if not meeting.proceedings_final %}Draft{% endif %} Proceedings 
-          {% if user|has_role:"Secretariat" and not meeting.proceedings_final %}
-              <a class="btn btn-default"  href="{% url 'ietf.meeting.views.finalize_proceedings' num=meeting.number %}">Finalize Proceedings</a>
-          {% endif %}
-      </h1>
+      {% if user|has_role:"Secretariat" and not meeting.proceedings_final %}
+        <a class="btn btn-default finalize-button"
+           href="{% url 'ietf.meeting.views.finalize_proceedings' num=meeting.number %}">
+          Finalize Proceedings
+        </a>
+      {% endif %}
 
       {# cache for 15 minutes, as long as there's no proceedings activity. takes 4-8 seconds to generate. #}
       {% load cache %}
       {% cache 900 ietf_meeting_proceedings meeting.number cache_version %}
 
-      {% if meeting.proceedings_final %}
-      <h2 class="anchor-target" id="introduction">Introduction</h2>
-      <div>
-        <a href="{% url 'ietf.meeting.views.proceedings_acknowledgements' num=meeting.number %}">Acknowledgements</a><br>
-        <a href="{% url 'ietf.meeting.views.proceedings_overview' num=meeting.number %}">IETF Overview</a><br>
-        <a href="{% url 'ietf.meeting.views.proceedings_progress_report' num=meeting.number %}">Progress Report</a><br>
-        <a href="{% url 'ietf.meeting.views.proceedings_attendees' num=meeting.number %}">Attendees</a><br>
-        <a href="{% url 'ietf.meeting.views.important_dates' num=meeting.number %}">Important Dates</a><br>
-      </div>
-      {% endif %}
+        {% include 'meeting/proceedings/title.html' with meeting=meeting attendance=attendance only %}
+        {% include 'meeting/proceedings/introduction.html' with meeting=meeting only %}
 
         {% with "True" as show_agenda %}
           <!-- Plenaries -->

ietf/templates/meeting/proceedings/edit_material.html

@@ -0,0 +1,13 @@
+{% extends "meeting/proceedings/edit_material_base.html" %}
+{# Copyright The IETF Trust 2021, All Rights Reserved #}
+{% load tz %}
+
+{% block intro %}
+  <p class="help-block">
+    {% if material.active %}
+      This item will be listed on the proceedings as "{{ material }}". To change this, set the title below.<br>
+    {% else %}
+      This item currently will not appear on the proceedings.<br>
+    {% endif %}
+  </p>
+{% endblock %}

ietf/templates/meeting/proceedings/edit_material_base.html

@@ -0,0 +1,59 @@
+{% extends "base.html" %}
+{# Copyright The IETF Trust 2021, All Rights Reserved #}
+{% load origin tz %}
+
+{% load bootstrap3 %}
+
+{% block title %}
+  Edit {{ material_type.name }} for {{ meeting }} Proceedings
+{% endblock %}
+
+{% block content %}
+  {% origin %}
+
+  <h1>
+    {% block content_header %}
+      Edit Proceedings Material<br>
+      <small>
+        {{ meeting }} {{ material_type.name }}
+      </small>
+    {% endblock %}
+  </h1>
+
+  {% if meeting.proceedings_final %}
+    <div class="alert alert-warning">
+      The proceedings for this meeting have already been finalized.
+    </div>
+  {% endif %}
+
+  {% if material is not None %}
+    <p>
+      {% if material.active %}
+        {% if material.is_url %} An external URL for this material was set at
+        {% else %} A file for this material type was uploaded at {% endif %}
+        {% with tm=material.document.time|utc %}
+          {{ tm|date:"H:i:s" }} UTC on {{ tm|date:"Y-m-d" }}.{% endwith %}
+      {% else %}
+        This material has been removed and will not appear in the proceedings.
+      {% endif %}
+    </p>
+  {% endif %}
+  {% block intro %}{% endblock %}
+
+  {% block edit_form %}
+    <form class="edit-proceedings-material" method="post">
+      {% csrf_token %}
+
+      {% bootstrap_form form %}
+
+      {# To replace the form but keep default buttons, use block.super in the edit_form block #}
+      {% block form_buttons %}
+        {% buttons %}
+          <a class="btn btn-default pull-right"
+             href="{% url 'ietf.meeting.views_proceedings.material_details' num=meeting.number %}">Back</a>
+          <button class="btn btn-primary" type="submit">{% firstof submit_button_label 'Save' %}</button>
+        {% endbuttons %}
+      {% endblock %}
+    </form>
+  {% endblock %}
+{% endblock content %}

ietf/templates/meeting/proceedings/edit_meetinghosts.html

@@ -0,0 +1,59 @@
+{% extends "base.html" %}
+{# Copyright The IETF Trust 2021, All Rights Reserved #}
+{% load origin bootstrap3 %}
+
+{% block morecss %}
+  img.logo {max-width: 30rem; max-height: 30rem;}
+{% endblock %}
+
+{% block title %}
+  Edit Hosts for {{ meeting }} Proceedings
+{% endblock %}
+
+{% block content %}
+  {% origin %}
+
+  <h1>
+      Edit Meeting Hosts<br>
+      <small>
+        {{ meeting }}
+      </small>
+  </h1>
+
+  {% if meeting.proceedings_final %}
+    <div class="alert alert-warning">
+      The proceedings for this meeting have already been finalized.
+    </div>
+  {% endif %}
+
+  <p class="help-block">
+    The entries below will appear on the proceedings as meeting hosts.
+    If you need to add more than there are slots, fill out the form below, save, and
+    reopen this page.
+  </p>
+
+  <form method="post" enctype="multipart/form-data">
+    {% csrf_token %}
+    {{ formset.management_form }}
+    {{ formset.non_form_errors }}
+    <table class="table table-striped container-fluid">
+      {% for form in formset %}
+        <tr class="row">
+          <td class="col-md-3">
+            {% if form.instance.pk and form.instance.logo %}
+              <img class="logo"
+                   src="{% url 'ietf.meeting.views_proceedings.meetinghost_logo' num=meeting.number host_id=form.instance.pk %} ">
+            {% endif %}
+          </td>
+          <td class="col-md-9">
+            {% bootstrap_form form %}
+          </td>
+        </tr>
+    {% endfor %}
+    </table>
+    {% buttons %}
+      <a class="btn btn-default pull-right" href="{% url 'ietf.meeting.views.materials' num=meeting.number %}">Back</a>
+      <button class="btn btn-primary" type="submit">Save</button>
+    {% endbuttons %}
+  </form>
+{% endblock content %}

ietf/templates/meeting/proceedings/introduction.html

@@ -0,0 +1,57 @@
+{% comment %} Copyright The IETF Trust 2021, All Rights Reserved
+
+This renders the list of links below the title on the meeting proceedings page.
+{% endcomment %}
+<div class="proceedings-intro">
+  <div class="proceedings-column">
+    <div class="proceedings-row">
+      <a href="{% url 'ietf.meeting.views.proceedings_overview' num=meeting.number %}">
+        IETF Overview
+      </a>
+    </div>
+
+    <div class="proceedings-row">
+      <a href="{% url 'ietf.meeting.views.proceedings_attendees' num=meeting.number %}">
+        Participants
+      </a>
+    </div>
+
+    <div class="proceedings-row">
+      <a href="{% url 'ietf.meeting.views.agenda' num=meeting.number %}">
+        Meeting Agenda
+      </a>
+    </div>
+
+    <div class="proceedings-row">
+      <a href="{% url 'ietf.meeting.views.proceedings_progress_report' num=meeting.number %}">
+        Activity Report
+      </a>
+    </div>
+
+    <div class="proceedings-row">
+      <a href="{% url 'ietf.meeting.views.important_dates' num=meeting.number %}">
+        Important Dates
+      </a>
+    </div>
+
+    {% if meeting.proceedings_format_version < 3 %}
+      <div class="proceedings-row">
+        <a href="{% url 'ietf.meeting.views.proceedings_acknowledgements' num=meeting.number %}">
+          Acknowledgements
+        </a>
+      </div>
+    {% endif %}
+  </div>
+
+  {% with materials=meeting.get_proceedings_materials %}
+    {% if materials|length > 0 %}
+      <div class="proceedings-column">
+        {% for mat in materials %}
+          <div class="proceedings-row proceedings-material">
+            <a href="{{ mat.get_href }}">{{ mat }}</a>
+          </div>
+        {% endfor %}
+      </div>
+    {% endif %}
+  {% endwith %}
+</div>

ietf/templates/meeting/proceedings/material_details.html

@@ -0,0 +1,152 @@
+{% extends "base.html" %}
+{# Copyright The IETF Trust 2015-2021, All Rights Reserved #}
+{% load origin ietf_filters static tz %}
+
+{% block title %}{{ meeting }} : Proceedings Materials{% endblock %}
+
+{% block content %}
+  {% origin %}
+
+
+
+  <h1>{{ meeting }} : Proceedings Materials</h1>
+
+  {% if meeting.proceedings_final %}
+    <div class="alert alert-warning">
+      The proceedings have been finalized for this meeting.
+    </div>
+  {% endif %}
+
+
+  <div class="panel panel-default">
+    <div class="panel-heading">Proceedings Materials</div>
+    <div class="panel-body">
+      <table class="table table-condensed table-striped">
+      <thead>
+      <tr>
+        <th>Type</th>
+        <th>Title</th>
+        <th>Document</th>
+        <th>Updated</th>
+        <th></th>
+      </tr>
+      </thead>
+      <tbody>
+        {% for mat_type, mat in proceedings_materials %}
+          <tr>
+            <td>{{ mat_type }}</td>
+            {% if mat and mat.active %}
+              {% url 'ietf.doc.views_doc.document_main' name=mat.document.name as url %}
+              <td>
+                <a href="{{ mat.document.get_href }}">{{ mat }}</a>
+              </td>
+              <td>
+                <a href="{{ url }}">{{ mat.document }}</a>
+                {% if mat.is_url %} (external URL) {% else %} (uploaded file) {% endif %}
+              </td>
+              <td>
+                {% with timestamp=mat.document.time|utc %}
+                  {{ timestamp|date:"Y-m-d" }}<br><small>{{ timestamp|date:"H:i:s" }}&nbsp;UTC</small>
+                {% endwith %}
+              </td>
+            {% else %}
+              <td colspan="3"></td>
+            {% endif %}
+
+            {% if user|has_role:"Secretariat" %}
+              <td class="col-md-2">
+                {% url 'ietf.meeting.views_proceedings.upload_material' num=meeting.number material_type=mat_type.slug as upload_url %}
+                {% url 'ietf.meeting.views_proceedings.edit_material' num=meeting.number material_type=mat_type.slug as edit_url %}
+                {% url 'ietf.meeting.views_proceedings.remove_material' num=meeting.number material_type=mat_type.slug as remove_url %}
+                {% url 'ietf.meeting.views_proceedings.restore_material' num=meeting.number material_type=mat_type.slug as restore_url %}
+                {% if mat is None %}
+                  <a class="btn btn-default btn-sm pull-right" href="{{ upload_url }}">Add Material</a>
+                {% elif mat.active %}
+                  <a class="btn btn-default btn-sm pull-right" href="{{ upload_url }}">Replace Material</a>
+                  <a class="btn btn-default btn-sm pull-right" href="{{ edit_url }}">Change title</a>
+                  <a class="btn btn-default btn-sm pull-right" href="{{ remove_url }}">Remove</a>
+                {% else %}
+                  <a class="btn btn-default btn-sm pull-right" href="{{ upload_url }}">Add Material</a>
+                  <a class="btn btn-default btn-sm pull-right" href="{{ restore_url }}">Restore</a>
+                {% endif %}
+              </td>
+            {% endif %}
+          </tr>
+        {% endfor %}
+      </tbody>
+      </table>
+    </div>
+  </div>
+
+  <a class="btn btn-default pull-right" href="{% url 'ietf.meeting.views.materials' num=meeting.number %}">Back</a>
+{% endblock %}
+
+{% comment %}{% block js %}
+  {% if can_manage_materials %}
+    <script type="text/javascript" src="{% static 'jquery/jquery.min.js' %}"></script>
+    <script type="text/javascript" src="{% static 'js-cookie/src/js.cookie.js' %}"></script>
+    <script type="text/javascript" src={% static 'Sortable/Sortable.min.js' %}></script>
+
+    <script type="text/javascript">
+
+
+      $.ajaxSetup({
+        crossDomain: false,
+        beforeSend: function (xhr, settings) {
+          if (!csrfSafeMethod(settings.type)) {
+            xhr.setRequestHeader('X-CSRFToken', Cookies.get('csrftoken'));
+          }
+        }
+      });
+
+      var sortables = [];
+      var options = {
+        group: 'slides',
+        animation: 150,
+        onAdd: function (event) {onAdd(event)},
+        onRemove: function (event) {onRemove(event)},
+        onEnd: function (event) {onEnd(event)}
+      };
+
+      function onAdd(event) {
+        var old_session = event.from.getAttribute('session');
+        var new_session = event.to.getAttribute('session');
+        $.post(event.to.getAttribute('addToSession'), {
+          'order': event.newIndex + 1,
+          'name': event.item.getAttribute('name')
+        });
+        $(event.item).find('td:eq(1)').find('a').each(function () {
+          $(this).attr('href', $(this).attr('href').replace(old_session, new_session));
+        });
+      }
+
+      function onRemove(event) {
+        var old_session = event.from.getAttribute('session');
+        $.post(event.from.getAttribute('removeFromSession'), {
+          'oldIndex': event.oldIndex + 1,
+          'name': event.item.getAttribute('name')
+        });
+      }
+
+      function onEnd(event) {
+        if (event.to == event.from) {
+          $.post(event.from.getAttribute('reorderInSession'), {
+            'oldIndex': event.oldIndex + 1,
+            'newIndex': event.newIndex + 1
+          });
+        }
+      }
+
+      $(document).ready(function () {
+
+        $('.slides tbody').each(function () {
+          sortables.push(Sortable.create(this, options));
+        });
+
+      });
+
+    </script>
+
+  {% endif %}
+{% endblock %}
+{% endcomment %}

ietf/templates/meeting/proceedings/materials_table.html

@@ -0,0 +1,57 @@
+{# Copyright The IETF Trust 2021, All Rights Reserved #}
+{% load ietf_filters misc_filters tz %}
+{# only show if user is secretariat or at least one material is active #}
+{% if proceedings_materials|list_extract:1|keep_only:'active' or user|has_role:'Secretariat' %}
+  <!-- Proceedings materials not tied to groups -->
+  <h2 class="anchor-target" id="proceedings-materials">Proceedings Materials</h2>
+  <table class="table table-condensed table-striped">
+    <thead>
+    <tr>
+      {% if user|has_role:'Secretariat' %}
+        <th class="col-md-2">Type</th>
+        <th class="col-md-8">Title</th>
+        <th class="col-md-1">Updated</th>
+        <th class="col-md-1">&nbsp;</th>
+      {% else %}
+        <th class="col-md-2">Type</th>
+        <th class="col-md-9">Title</th>
+        <th class="col-md-1">Updated</th>
+      {% endif %}
+    </tr>
+    </thead>
+
+    <tbody>
+    {% for type_name, material in proceedings_materials %}
+      {# secretariat sees empty slots, others do not #}
+      {% if user|has_role:'Secretariat' or meeting and material.active %}
+        <tr>
+          <td>{{ type_name }}</td>
+          {% if material and material.active %}
+            <td>
+              <a
+                href="{{ material.get_href }}">
+                {{ material.document.title }}
+              </a>
+            </td>
+            <td>
+              {% with timestamp=material.document.time|utc %}
+                {{ timestamp|date:"Y-m-d" }}<br><small>{{ timestamp|date:"H:i:s" }}&nbsp;UTC</small>
+              {% endwith %}
+              {% else %}
+            <td colspan="2"></td>
+          {% endif %}
+          {% if user|has_role:'Secretariat' %}
+            {% if forloop.first %}
+              <td rowspan="{{ proceedings_materials|length }}">
+                <a href="{% url 'ietf.meeting.views_proceedings.material_details' num=meeting.number %}">
+                  Edit materials
+                </a>
+              </td>
+            {% endif %}
+          {% endif %}
+        </tr>
+      {% endif %}
+    {% endfor %}
+    </tbody>
+  </table>
+{% endif %}

ietf/templates/meeting/proceedings/remove_restore_material.html

@@ -0,0 +1,23 @@
+{% extends "base.html" %}
+{# Copyright The IETF Trust 2021, All Rights Reserved #}
+{% load origin %}
+
+{% load bootstrap3 %}
+
+{% block title %}{{ action|capfirst }} {{material.type.name}} for {{ material.meeting }} proceedings{% endblock %}
+
+{% block content %}
+  {% origin %}
+  <h1>{{ action|capfirst }} material</h1>
+
+  <p>{{ action|capfirst }} <strong>{{material}}</strong> for the {{ material.meeting }} proceedings?</p>
+
+  <form method="post">
+    {% csrf_token %}
+    {% buttons %}
+      <button type="submit" class="btn btn-primary">{{ action|capfirst }} material</button>
+      <a class="btn btn-default" href="{% url 'ietf.meeting.views_proceedings.material_details' num=material.meeting.number %}">Cancel</a>
+    {% endbuttons %}
+  </form>
+
+{% endblock %}

ietf/templates/meeting/proceedings/title.html

@@ -0,0 +1,52 @@
+{% comment %} Copyright The IETF Trust 2021, All Rights Reserved
+
+This renders the title block for the meeting proceedings page.
+{% endcomment %}
+{% load ietf_filters %}
+
+<div class="proceedings-title">
+  <h1>
+    IETF {{ meeting.number }} {% if not meeting.proceedings_final %}Draft{% endif %}
+    Proceedings
+  </h1>
+
+  <div class="proceedings-date">
+    {{ meeting.date|date:"d F Y" }} - {{ meeting.end_date|date:"d F Y" }}
+  </div>
+  {% if attendance is not None %}
+  <div class="proceedings-info">
+    {% if attendance.onsite > 0 %}{{ attendance.onsite }} onsite participant{{ attendance.onsite|pluralize }}{% if attendance.online > 0 %},{% endif %}{% endif %}
+    {% if attendance.online > 0 %}{{ attendance.online }} online participant{{ attendance.online|pluralize }}{% endif %}
+  </div>
+  {% endif %}
+</div>
+
+<div class="proceedings-intro with-divider">
+  <div class="proceedings-column">
+    <div class="proceedings-row">
+      Location: {{ meeting.city|default:"TBD" }}
+    </div>
+    {% if meeting.venue_name %}
+      <div class="proceedings-row">
+        Venue: {{ meeting.venue_name }}
+      </div>
+    {% endif %}
+  </div>
+  {% with hosts=meeting.meetinghosts.all %}
+    {% if hosts.exists %}
+      <div class="proceedings-column">
+        <div class="proceedings-row">
+          Hosted by:
+          {% for host in hosts %}
+            <div class="host-logo">
+                <img class="host{{ forloop.counter }}"
+                     src="{% url 'ietf.meeting.views_proceedings.meetinghost_logo' num=meeting.number host_id=host.pk %}"
+                     height="{{ host.logo_height }}"
+                     width="{{ host.logo_width }}"
+                     title="{{ host.name }}">
+            </div>{% endfor %}
+        </div>
+      </div>
+    {% endif %}
+  {% endwith %}
+</div>

ietf/templates/meeting/proceedings/upload_material.html

@@ -0,0 +1,43 @@
+{% extends "meeting/proceedings/edit_material_base.html" %}
+{# Copyright The IETF Trust 2015-2021, All Rights Reserved #}
+
+{% load bootstrap3 %}
+
+{% block morecss %}
+  {{ form.media.css }}
+{% endblock %}
+{% block title %}
+  Upload {{ material_type.name }} for {{ meeting }} Proceedings
+{% endblock %}
+
+{% block content_header %}
+  Upload Proceedings Material<br>
+  <small>
+    {{ meeting }} {{ material_type.name }}
+  </small>
+{% endblock %}
+
+{% block intro %}
+  <p>
+    {% if material is None %}
+      This will be linked from the {{ meeting }} proceedings under
+      the title "{{ material_type.name }}".
+    {% else %}
+      Select a file or external URL to replace the existing material. This will be linked from the
+      {{ meeting }} proceedings under the title "{{ material.document.title }}".
+    {% endif %}
+  </p>
+{% endblock %}
+
+{% block edit_form %}
+  <form class="upload-material" method="post" enctype="multipart/form-data">
+    {% csrf_token %}
+    {% bootstrap_form form %}
+
+    {% block form_buttons %}{{ block.super }}{% endblock %}
+  </form>
+{% endblock %}
+
+{% block js %}
+  {{ form.media.js }}
+{% endblock %}

ietf/utils/fields.py

@@ -264,3 +264,19 @@ class SearchableField(forms.CharField):
             ))
 
         return objs.first() if self.max_entries == 1 else objs
+
+class MissingOkImageField(models.ImageField):
+    """Image field that can validate successfully if file goes missing
+
+    The default ImageField fails even to validate if its back-end file goes
+    missing, at least when width_field and height_field are used. This ignores
+    the exception that arises. Without this, even deleting a model instance
+    through a form fails.
+    """
+    def update_dimension_fields(self, *args, **kwargs):
+        try:
+            super().update_dimension_fields(*args, **kwargs)
+        except FileNotFoundError:
+            pass  # don't do anything if the file has gone missing
+
+

ietf/utils/templatetags/misc_filters.py

@@ -3,6 +3,7 @@
 
 from django import template
 
+import debug                            # pyflakes:ignore
 
 register = template.Library()
 
@@ -27,3 +28,35 @@ def merge_media(forms, arg=None):
     if arg is None:
         return str(combined)
     return str(combined[arg])
+
+
+@register.filter
+def list_extract(items, arg):
+    """Extract items from a list of containers
+
+    Uses Django template lookup rules: tries list index / dict key lookup first, then
+    tries to getattr. If the result is callable, calls with no arguments and uses the return
+    value..
+
+    Usage: {{ list_of_lists|list_extract:1 }} (gets elt 1 from each item in list)
+           {{ list_of_dicts|list_extract:'key' }} (gets value of 'key' from each dict in list)
+    """
+    def _extract(item):
+        try:
+            return item[arg]
+        except TypeError:
+            pass
+        attr = getattr(item, arg, None)
+        return attr() if callable(attr) else attr
+
+    return [_extract(item) for item in items]
+
+@register.filter
+def keep_only(items, arg):
+    """Filter list of items based on an attribute
+
+    Usage: {{ item_list|keep_only:'attribute' }}
+      Returns the list, keeping only those whose where item[attribute] or item.attribute is
+      present and truthy. The attribute can be an int or a string.
+    """
+    return [item for item, value in zip(items, list_extract(items, arg)) if value]

ietf/utils/validators.py

@@ -10,7 +10,7 @@ from urllib.parse import urlparse, urlsplit, urlunsplit
 
 from django.conf import settings
 from django.core.exceptions import ValidationError
-from django.core.validators import RegexValidator, URLValidator, EmailValidator, _lazy_re_compile
+from django.core.validators import RegexValidator, URLValidator, EmailValidator, _lazy_re_compile, BaseValidator
 from django.template.defaultfilters import filesizeformat
 from django.utils.deconstruct import deconstructible
 from django.utils.ipv6 import is_valid_ipv6_address
@@ -58,12 +58,26 @@ class RegexStringValidator(object):
 
 validate_regular_expression_string = RegexStringValidator()
 
-def validate_file_size(file):
-    if file.size > settings.SECR_MAX_UPLOAD_SIZE:
+def validate_file_size(file, missing_ok=False):
+    try:
+        size = file.size
+    except FileNotFoundError:
+        if missing_ok:
+            return
+        else:
+            raise
+
+    if size > settings.SECR_MAX_UPLOAD_SIZE:
         raise ValidationError('Please keep filesize under %s. Requested upload size was %s' % (filesizeformat(settings.SECR_MAX_UPLOAD_SIZE), filesizeformat(file.size)))
 
-def validate_mime_type(file, valid):
-    file.open()
+def validate_mime_type(file, valid, missing_ok=False):
+    try:
+        file.open()
+    except FileNotFoundError:
+        if missing_ok:
+            return None, None
+        else:
+            raise
     raw = file.read()
     mime_type, encoding = get_mime_type(raw)
     # work around mis-identification of text where a line has 'virtual' as
@@ -76,6 +90,28 @@ def validate_mime_type(file, valid):
                                     (mime_type, ', '.join(valid) ))
     return mime_type, encoding
 
+@deconstructible
+class WrappedValidator:
+    """Helper for attaching a validate function with parameters to a model
+
+    This captures extra arguments to migration functions in a way that is compatible
+    with Django's migrations. E.g., WrappedValidator(validate_mime_type, valid_type_list)
+    will arrange to call validate_mime_type.
+    """
+    def __init__(self, validate_method, *args):
+        self.validate_method = validate_method
+        self.args = args
+
+    def __call__(self, inst):
+        return self.validate_method(inst, *self.args)
+
+    def __eq__(self, other):
+        return all([
+            isinstance(other, WrappedValidator),
+            (self.validate_method == other.validate_method),
+            (self.kwargs == other.kwargs)
+        ])
+
 def validate_file_extension(file, valid):
     name, ext = os.path.splitext(file.name)
     if ext.lower() not in valid:
@@ -194,3 +230,21 @@ def validate_external_resource_value(name, value):
     else:
         raise ValidationError('Unknown resource type '+name.type.name)
 
+
+@deconstructible
+class MaxImageSizeValidator(BaseValidator):
+    """Validate that an image is no longer than a given size"""
+    message = 'Ensure this image is smaller than %(limit_value)s (it is %(show_value)s)'
+    code = 'max_image_size'
+
+    def __init__(self, max_width, max_height):
+        super().__init__(limit_value=(max_width, max_height))
+
+    def compare(self, a, b):
+        return (a[0] > b[0]) or (a[1] > b[1])
+
+    def clean(self, x):
+        try:
+            return x.width, x.height
+        except FileNotFoundError:
+            return 0, 0  # don't fail if the image is missing