Add XMPP RFCs page

content/rfcs.md

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+---
+title: XMPP RFCs
+layout: "extensions"
+---
+The core specifications for XMPP are developed at the [Internet Engineering Task Force (IETF)](https://ietf.org). The XMPP Standards Foundation develops extensions to XMPP in its [XEP series](/extensions).
+
+Good places for developers to start are the [compliance suites](https://xmpp.org/about/compliance-suites-current), as well as the [technology overview pages](https://xmpp.org/about-xmpp/technology-overview/).
+
+{{< rfc-list >}}

data/rfc_list.json

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+[]

themes/xmpp.org/layouts/shortcodes/rfc-list.html

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+<h3>Basic XMPP RFCs</h3>
+<ul>
+{{ range sort .Site.Data.rfc_list ".number" }}
+    {{ if .basic }}
+        <li><a href="#{{ .number }}">RFC {{ .number }}:</a> {{ .title }}</li>
+    {{ end }}
+{{ end }}
+</ul>
+
+<h3>Further XMPP RFCs</h3>
+<ul>
+{{ range sort .Site.Data.rfc_list ".number" }}
+    {{ if and (not .basic) (not .obsoleted_by) }}
+        <li><a href="#{{ .number }}">RFC {{ .number }}:</a> {{ .title }}</li>
+    {{ end }}
+{{ end }}
+</ul>
+
+<h3>Obsoleted</h3>
+<ul>
+{{ range sort .Site.Data.rfc_list ".number" }}
+    {{ if .obsoleted_by }}
+        <li><a href="#{{ .number }}">RFC {{ .number }}:</a> {{ .title }}</li>
+    {{ end }}
+{{ end }}
+</ul>
+
+<h3>All XMPP RFCs</h3>
+{{ range sort .Site.Data.rfc_list ".number" }}
+<div class="card">
+    <div class="card-header">
+        <a id="{{ .number }}"><h5 class="card-title">RFC {{ .number }}: {{ .title }}</h5></a>
+        <p class="card-subtitle text-muted"><small>{{ .authors }} ({{ .date }})</small></p>
+    </div>
+    <div class="card-body">
+        <p class="card-text">{{ .abstract }}</p>
+        {{ if .obsoletes }}
+            <p><small>This RFC obsoletes <a href="#{{ .obsoletes }}">RFC {{ .obsoletes }}.</a></small></p>
+        {{ end }}
+        {{ if .obsoleted_by }}
+            <p><small>This RFC is obsoleted by <a href="#{{ .obsoleted_by }}">RFC {{ .obsoleted_by }}.</a></small></p>
+        {{ end }}
+        {{ if .selfhosted }}
+            <div>
+                <a class="btn btn-outline-secondary btn-sm mb-1" role="button" href="https://datatracker.ietf.org/doc/rfc{{ .number}}" title="RFC {{ .number }} at datatracker.ietf.org" target="_blank"><i class="fas fa-external-link-alt"></i> RFC {{ .number }}</a>
+                <p class="mb-1"><small>The XSF hosts this document:</small></p>
+                <a class="btn btn-outline-secondary btn-sm" role="button" href="/rfcs/rfc{{ .number }}.html" title="RFC {{ .number }} - HTML" target="_blank"><i class="far fa-file-alt"></i> HTML</a>
+                <a class="btn btn-outline-secondary btn-sm" role="button" href="/rfcs/rfc{{ .number }}.txt" title="RFC {{ .number }} - TXT file" target="_blank"><i class="far fa-file"></i> TXT File</a>
+                <a class="btn btn-outline-secondary btn-sm" role="button" href="/rfcs/rfc{{ .number }}.xml" title="RFC {{ .number }} - XML source" target="_blank"><i class="far fa-file-code"> XML Source</i></a>
+            </div>
+        {{ else }}
+            <div>
+                <a class="btn btn-outline-secondary btn-sm" role="button" href="https://datatracker.ietf.org/doc/rfc{{ .number}}" title="RFC {{ .number }} at datatracker.ietf.org" target="_blank"><i class="fas fa-external-link-alt"></i> RFC {{ .number }}</a>
+            </div>
+        {{ end }}
+    </div>
+</div>
+<br>
+{{ end }}

tools/prepare_rfc_list.py

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+# This file is used to download RFC references and convert them to
+# a single JSON file
+import sys
+import os
+import json
+import requests
+import xml.etree.ElementTree as ET
+
+
+def status_ok(status_code):
+    # Status codes ranging from 200 (OK) to 300 (redirects) are okay
+    if status_code >= 200 and status_code < 400:
+        return True
+    return False
+
+
+rfc_numbers = [
+    3920,
+    3921,
+    3922,
+    3923,
+    4622,
+    4854,
+    4979,
+    5122,
+    5437,
+    6120,  #
+    6121,  #
+    7081,
+    7165,
+    7247,
+    7248,
+    7259,
+    7395,  #
+    7572,
+    7573,
+    7590,  #
+    7622,  #
+    7700,
+    7702,
+    7712,
+    8084,
+    8266,
+    8284,
+    8600
+]
+
+basic_rfc_numbers = [
+    6120,
+    6121,
+    7395,
+    7590,
+    7622
+]
+
+selfhosted_rfcs = [
+    3920,
+    3921,
+    3922,
+    3923,
+    4622,
+    4854,
+    5122,
+    6120,
+    6121,
+    6122
+]
+
+bibxmlpath = 'https://xml2rfc.tools.ietf.org/public/rfc/bibxml'
+
+rfcs = []
+
+print('Start preparing RFC list')
+
+for number in rfc_numbers:
+    request = requests.get(f'{bibxmlpath}/reference.RFC.{number}.xml')
+    if not status_ok(request.status_code):
+        quit(f'Error while downloading reference for '
+             f'RFC {number} ({request.status_code})')
+
+    try:
+        root = ET.fromstring(request.content)
+    except Exception:
+        quit(f'Error while parsing RFC reference for RFC {number}')
+
+    authors = None
+    for item in root.iter():
+        if item.tag == 'title':
+            title = item.text
+        if item.tag == 'date':
+            date = item.attrib.get('year')
+        if item.tag == 'author':
+            if authors is None:
+                authors = item.attrib.get('fullname')
+            else:
+                authors += f", {item.attrib.get('fullname')}"
+        if item.tag == 'abstract':
+            abstract = item.find('t').text
+
+    obsoletes = None
+    obsoleted_by = None
+    if number == 3920:
+        obsoleted_by = '6120'
+    if number == 3921:
+        obsoleted_by = '6121'
+    if number == 4622:
+        obsoleted_by = '5122'
+    if number == 5122:
+        obsoletes = '4622'
+    if number == 6120:
+        obsoletes = '3920'
+    if number == 6121:
+        obsoletes = '3921'
+    if number == 7248:
+        obsoleted_by = '8084'
+    if number == 7700:
+        obsoleted_by = '8266'
+    if number == 8084:
+        obsoletes = '7248'
+    if number == 8266:
+        obsoletes = '7700'
+
+    basic = True if number in basic_rfc_numbers else False
+    selfhosted = True if number in selfhosted_rfcs else False
+
+    rfcs.append(
+        {
+            'number': number,
+            'title': title,
+            'date': date,
+            'authors': authors,
+            'abstract': abstract,
+            'obsoletes': obsoletes,
+            'obsoleted_by': obsoleted_by,
+            'basic': basic,
+            'selfhosted': selfhosted,
+        }
+    )
+    print(f'Added RFC {number}')
+
+base_path = os.path.dirname(os.path.abspath(sys.argv[0]))
+
+with open(f'{base_path}/../data/rfc_list.json', 'w') as json_file:
+    json.dump(rfcs, json_file, indent=4)
+
+print(f'RFC list prepared successfully ({len(rfc_numbers)} RFCs)')