Add non mapped technique pages to fix any 404 link errors

src/mappings_explorer/site_builder.py

@@ -1364,7 +1364,25 @@ def build_attack_pages(projects: list, url_prefix: str, breadcrumbs: list):
                 breadcrumbs=breadcrumbs,
                 non_mappables=non_mappables,
             )
+            # Build technique pages that don't have mappings to fix any linking errors
+            for technique in non_mappables:
+                external_dir = (
+                    PUBLIC_DIR
+                    / "attack"
+                    / ("attack-" + attack_version)
+                    / ("domain-" + attack_domain.lower())
+                    / "techniques"
+                )
 
+                if technique.id:
+                    build_technique_page(
+                        url_prefix=url_prefix,
+                        parent_dir=external_dir,
+                        attack_version=attack_version,
+                        attack_domain=attack_domain,
+                        technique=technique,
+                        breadcrumbs=breadcrumbs,
+                    )
             for technique in all_techniques:
                 external_dir = (
                     PUBLIC_DIR

src/mappings_explorer/templates/macros.html.j2

@@ -5,7 +5,7 @@
     </a>
 {% endmacro %}
 
-{% macro table(headers, mappings, url_prefix, table_max_count, full_link, full_size) %}
+{% macro table(headers, mappings, url_prefix, table_max_count, full_link, full_size, attack_version, attack_domain, previous_link) %}
 <div class="table-responsive table-outer">
 {% if mappings | length > table_max_count %}
 <p class="notice">
@@ -29,21 +29,30 @@
       </tr>
   </thead>
   <tbody>
-    {%- for mapping in mappings[:table_max_count] %}
-      <tr>
-        {% for header in headers -%}
-            {%- if header[2] and header[3] -%}
-                <td><a href="{{header[3]}}{{mapping[header[2]] | replace(' ', '_') }}/">{{mapping[header[0]]}}</a></td>
-            {% endif -%}
-            {%- if header[2] and not header[3] -%}
-                <td><a href="{{mapping | build_capability_url(url_prefix, mapping[header[2]])}}">{{mapping[header[0]]}}</a></td>
-            {% endif -%}
-            {%- if not header[2] -%}
-                <td>{{mapping[header[0]]}}</td>
-            {% endif -%}
-        {% endfor -%}
-      </tr>
-    {% endfor -%}
+    {% if mappings | length > 0 %}
+      {%- for mapping in mappings[:table_max_count] %}
+        <tr>
+          {% for header in headers -%}
+              {%- if header[2] and header[3] -%}
+                  <td><a href="{{header[3]}}{{mapping[header[2]] | replace(' ', '_') }}/">{{mapping[header[0]]}}</a></td>
+              {% endif -%}
+              {%- if header[2] and not header[3] -%}
+                  <td><a href="{{mapping | build_capability_url(url_prefix, mapping[header[2]])}}">{{mapping[header[0]]}}</a></td>
+              {% endif -%}
+              {%- if not header[2] -%}
+                  <td>{{mapping[header[0]]}}</td>
+              {% endif -%}
+          {% endfor -%}
+        </tr>
+      {% endfor -%}
+    {% else  %}
+        <tr>
+          <td class="text-center" colspan="{{headers | length}}">
+            No mappings found for this technique in ATT&CK {{attack_domain}} version {{attack_version}}. <a href={{previous_link}}>Change versions
+            of ATT&CK</a> or check out a different technique with <a href="{{url_prefix}}attack/matrix/">Matrix View</a>.
+          </td>
+        </tr>
+    {% endif%}
   </tbody>
 </table>
 <script>

src/mappings_explorer/templates/technique.html.j2

@@ -33,7 +33,7 @@
           </div>
         </div>
         <div class="col-12">
-            {{ macros.table(headers, mappings, url_prefix, table_max_count, full_link, full_size) }}
+            {{ macros.table(headers, mappings, url_prefix, table_max_count, full_link, full_size, attack_version, attack_domain, previous_link) }}
         </div>
       </div>
     </div>