From: Jason Ish <jason.ish@oisf.net>
Date: Tue, 6 Jan 2026 17:43:13 +0000 (-0600)
Subject: test: dnp3 max points test
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=920b7488ee847d852c5652d8720b8c2b3a5bdbb0;p=thirdparty%2Fsuricata-verify.git

test: dnp3 max points test

Test that an alert is raised if the maximum number of points per object
was hit.

Ticket: #8181
---

diff --git a/tests/dnp3/dnp3-max-points/README.md b/tests/dnp3/dnp3-max-points/README.md
new file mode 100644
index 000000000..3d4746062
--- /dev/null
+++ b/tests/dnp3/dnp3-max-points/README.md
@@ -0,0 +1,3 @@
+DNP3 test for max points alert.
+
+Ticket: #8181
diff --git a/tests/dnp3/dnp3-max-points/dnp3-events.rules b/tests/dnp3/dnp3-max-points/dnp3-events.rules
new file mode 100644
index 000000000..a6e2d9dac
--- /dev/null
+++ b/tests/dnp3/dnp3-max-points/dnp3-events.rules
@@ -0,0 +1,38 @@
+# DNP3 application decoder event rules.
+#
+# This SIDs fall in the 2270000+ range. See:
+#    http://doc.emergingthreats.net/bin/view/Main/SidAllocation
+
+# Flooded.
+alert dnp3 any any -> any any (msg:"SURICATA DNP3 Request flood detected"; \
+      app-layer-event:dnp3.flooded; classtype:protocol-command-decode; sid:2270000; rev:2;)
+
+# Length to small for PDU type. For example, link specifies the type
+# as user data, but the length field is not large enough for user
+# data.
+alert dnp3 any any -> any any (msg:"SURICATA DNP3 Length too small"; \
+      app-layer-event:dnp3.len_too_small; classtype:protocol-command-decode; sid:2270001; rev:3;)
+
+# Bad link layer CRC.
+alert dnp3 any any -> any any (msg:"SURICATA DNP3 Bad link CRC"; \
+      app-layer-event:dnp3.bad_link_crc; classtype:protocol-command-decode; sid:2270002; rev:2;)
+
+# Bad transport layer CRC.
+alert dnp3 any any -> any any (msg:"SURICATA DNP3 Bad transport CRC"; \
+      app-layer-event:dnp3.bad_transport_crc; classtype:protocol-command-decode; sid:2270003; rev:2;)
+
+# Unknown object.
+alert dnp3 any any -> any any (msg:"SURICATA DNP3 Unknown object"; \
+      app-layer-event:dnp3.unknown_object; classtype:protocol-command-decode; sid:2270004; rev:2;)
+
+# Too many points in a message.
+alert dnp3 any any -> any any (msg:"SURICATA DNP3 Too many points in message"; \
+      app-layer-event:dnp3.too_many_points; \
+      threshold:type backoff, track by_flow, count 1, multiplier 10; \
+      classtype:protocol-command-decode; sid:2270005; rev:1;)
+
+# Too many objects.
+alert dnp3 any any -> any any (msg:"SURICATA DNP3 Too many objects"; \
+      app-layer-event:dnp3.too_many_objects; \
+      threshold:type backoff, track by_flow, count 1, multiplier 10; \
+      classtype:protocol-command-decode; sid:2270006; rev:1;)
diff --git a/tests/dnp3/dnp3-max-points/suricata.yaml b/tests/dnp3/dnp3-max-points/suricata.yaml
new file mode 100644
index 000000000..1c9f19d75
--- /dev/null
+++ b/tests/dnp3/dnp3-max-points/suricata.yaml
@@ -0,0 +1,21 @@
+%YAML 1.1
+---
+
+outputs:
+  - eve-log:
+      enabled: yes
+      filetype: regular
+      filename: eve.json
+
+      types:
+        - alert
+        - anomaly
+        - dnp3
+        - flow
+
+app-layer:
+  protocols:
+    dnp3:
+      enabled: yes
+      detection-ports:
+        dp: 20000
diff --git a/tests/dnp3/dnp3-max-points/test.pcap b/tests/dnp3/dnp3-max-points/test.pcap
new file mode 100644
index 000000000..6bc7d41a0
Binary files /dev/null and b/tests/dnp3/dnp3-max-points/test.pcap differ
diff --git a/tests/dnp3/dnp3-max-points/test.yaml b/tests/dnp3/dnp3-max-points/test.yaml
new file mode 100644
index 000000000..7b0a2fb07
--- /dev/null
+++ b/tests/dnp3/dnp3-max-points/test.yaml
@@ -0,0 +1,14 @@
+requires:
+  min-version: 9.0.0
+
+checks:
+  - filter:
+      count: 1
+      match:
+        event_type: dnp3
+        dnp3.type: request
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 2270005