[Enhancement] Add support for JA3 and JA4 Fingerprint in WebACL rate limits and JA4 support for matching

.changelog/41719.txt

@@ -0,0 +1,15 @@
+```release-note:enhancement
+resource/aws_wafv2_web_acl: Add `ja3_fingerprint` and `ja4_fingerprint` to `custom_key` configuration blocks
+```
+
+```release-note:enhancement
+resource/aws_wafv2_rule_group: Add `ja3_fingerprint` and `ja4_fingerprint` to `custom_key` configuration blocks
+```
+
+```release-note:enhancement
+resource/aws_wafv2_web_acl: Add `ja4_fingerprint` to `field_to_match` configuration blocks
+```
+
+```release-note:enhancement
+resource/aws_wafv2_rule_group: Add `ja4_fingerprint` to `field_to_match` configuration blocks
+```

internal/service/wafv2/flex.go

@@ -586,6 +586,10 @@ func expandFieldToMatch(l []interface{}) *awstypes.FieldToMatch {
 		f.JA3Fingerprint = expandJA3Fingerprint(v.([]interface{}))
 	}
 
+	if v, ok := m["ja4_fingerprint"]; ok && len(v.([]interface{})) > 0 {
+		f.JA4Fingerprint = expandJA4Fingerprint(v.([]interface{}))
+	}
+
 	if v, ok := m["single_query_argument"]; ok && len(v.([]interface{})) > 0 {
 		f.SingleQueryArgument = expandSingleQueryArgument(m["single_query_argument"].([]interface{}))
 	}
@@ -716,6 +720,20 @@ func expandJA3Fingerprint(l []interface{}) *awstypes.JA3Fingerprint {
 	return ja3fingerprint
 }
 
+func expandJA4Fingerprint(l []interface{}) *awstypes.JA4Fingerprint {
+	if len(l) == 0 || l[0] == nil {
+		return nil
+	}
+
+	m := l[0].(map[string]interface{})
+
+	ja4fingerprint := &awstypes.JA4Fingerprint{
+		FallbackBehavior: awstypes.FallbackBehavior(m["fallback_behavior"].(string)),
+	}
+
+	return ja4fingerprint
+}
+
 func expandJSONMatchPattern(l []interface{}) *awstypes.JsonMatchPattern {
 	if len(l) == 0 || l[0] == nil {
 		return nil
@@ -1561,6 +1579,26 @@ func expandRateLimitHeader(l []interface{}) *awstypes.RateLimitHeader {
 	}
 }
 
+func expandRateLimitJa3Fingerprint(l []interface{}) *awstypes.RateLimitJA3Fingerprint {
+	if len(l) == 0 || l[0] == nil {
+		return nil
+	}
+	m := l[0].(map[string]interface{})
+	return &awstypes.RateLimitJA3Fingerprint{
+		FallbackBehavior: awstypes.FallbackBehavior(m["fallback_behavior"].(string)),
+	}
+}
+
+func expandRateLimitJa4Fingerprint(l []interface{}) *awstypes.RateLimitJA4Fingerprint {
+	if len(l) == 0 || l[0] == nil {
+		return nil
+	}
+	m := l[0].(map[string]interface{})
+	return &awstypes.RateLimitJA4Fingerprint{
+		FallbackBehavior: awstypes.FallbackBehavior(m["fallback_behavior"].(string)),
+	}
+}
+
 func expandRateLimitLabelNamespace(l []interface{}) *awstypes.RateLimitLabelNamespace {
 	if len(l) == 0 || l[0] == nil {
 		return nil
@@ -1626,6 +1664,12 @@ func expandRateBasedStatementCustomKeys(l []interface{}) []awstypes.RateBasedSta
 		if v, ok := m["ip"]; ok && len(v.([]interface{})) > 0 {
 			r.IP = &awstypes.RateLimitIP{}
 		}
+		if v, ok := m["ja3_fingerprint"]; ok && len(v.([]interface{})) > 0 {
+			r.JA3Fingerprint = expandRateLimitJa3Fingerprint(v.([]interface{}))
+		}
+		if v, ok := m["ja4_fingerprint"]; ok && len(v.([]interface{})) > 0 {
+			r.JA4Fingerprint = expandRateLimitJa4Fingerprint(v.([]interface{}))
+		}
 		if v, ok := m["label_namespace"]; ok {
 			r.LabelNamespace = expandRateLimitLabelNamespace(v.([]interface{}))
 		}
@@ -2124,6 +2168,10 @@ func flattenFieldToMatch(f *awstypes.FieldToMatch) interface{} {
 		m["ja3_fingerprint"] = flattenJA3Fingerprint(f.JA3Fingerprint)
 	}
 
+	if f.JA4Fingerprint != nil {
+		m["ja4_fingerprint"] = flattenJA4Fingerprint(f.JA4Fingerprint)
+	}
+
 	if f.JsonBody != nil {
 		m["json_body"] = flattenJSONBody(f.JsonBody)
 	}
@@ -2221,6 +2269,18 @@ func flattenJA3Fingerprint(j *awstypes.JA3Fingerprint) interface{} {
 	return []interface{}{m}
 }
 
+func flattenJA4Fingerprint(j *awstypes.JA4Fingerprint) interface{} {
+	if j == nil {
+		return []interface{}{}
+	}
+
+	m := map[string]interface{}{
+		"fallback_behavior": j.FallbackBehavior,
+	}
+
+	return []interface{}{m}
+}
+
 func flattenJSONBody(b *awstypes.JsonBody) interface{} {
 	if b == nil {
 		return []interface{}{}
@@ -2949,6 +3009,28 @@ func flattenRateLimitHeader(apiObject *awstypes.RateLimitHeader) []interface{} {
 	}
 }
 
+func flattenRateLimitJa3Fingerprint(apiObject *awstypes.RateLimitJA3Fingerprint) []interface{} {
+	if apiObject == nil {
+		return nil
+	}
+	return []interface{}{
+		map[string]interface{}{
+			"fallback_behavior": apiObject.FallbackBehavior,
+		},
+	}
+}
+
+func flattenRateLimitJa4Fingerprint(apiObject *awstypes.RateLimitJA4Fingerprint) []interface{} {
+	if apiObject == nil {
+		return nil
+	}
+	return []interface{}{
+		map[string]interface{}{
+			"fallback_behavior": apiObject.FallbackBehavior,
+		},
+	}
+}
+
 func flattenRateLimitLabelNamespace(apiObject *awstypes.RateLimitLabelNamespace) []interface{} {
 	if apiObject == nil {
 		return nil
@@ -3024,6 +3106,12 @@ func flattenRateBasedStatementCustomKeys(apiObject []awstypes.RateBasedStatement
 				map[string]interface{}{},
 			}
 		}
+		if o.JA3Fingerprint != nil {
+			tfMap["ja3_fingerprint"] = flattenRateLimitJa3Fingerprint(o.JA3Fingerprint)
+		}
+		if o.JA4Fingerprint != nil {
+			tfMap["ja4_fingerprint"] = flattenRateLimitJa4Fingerprint(o.JA4Fingerprint)
+		}
 		if o.LabelNamespace != nil {
 			tfMap["label_namespace"] = flattenRateLimitLabelNamespace(o.LabelNamespace)
 		}

internal/service/wafv2/schemas.go

@@ -379,7 +379,8 @@ var fieldToMatchBaseSchema = sync.OnceValue(func() *schema.Resource {
 			"cookies":             cookiesSchema(),
 			"header_order":        headerOrderSchema(),
 			"headers":             headersSchema(),
-			"ja3_fingerprint":     ja3fingerprintSchema(),
+			"ja3_fingerprint":     jaFingerprintSchema(),
+			"ja4_fingerprint":     jaFingerprintSchema(),
 			"json_body":           jsonBodySchema(),
 			"method":              emptySchema(),
 			"query_string":        emptySchema(),
@@ -504,6 +505,23 @@ var forwardedIPConfigSchema = sync.OnceValue(func() *schema.Schema {
 	}
 })
 
+var rateLimitJAFingerprintConfigSchema = sync.OnceValue(func() *schema.Schema {
+	return &schema.Schema{
+		Type:     schema.TypeList,
+		Optional: true,
+		MaxItems: 1,
+		Elem: &schema.Resource{
+			Schema: map[string]*schema.Schema{
+				"fallback_behavior": {
+					Type:             schema.TypeString,
+					Required:         true,
+					ValidateDiagFunc: enum.Validate[awstypes.FallbackBehavior](),
+				},
+			},
+		},
+	}
+})
+
 var textTransformationSchema = sync.OnceValue(func() *schema.Schema {
 	return &schema.Schema{
 		Type:     schema.TypeSet,
@@ -860,7 +878,7 @@ func cookiesMatchPatternSchema() *schema.Schema {
 	}
 }
 
-func ja3fingerprintSchema() *schema.Schema {
+func jaFingerprintSchema() *schema.Schema {
 	return &schema.Schema{
 		Type:     schema.TypeList,
 		Optional: true,
@@ -1078,7 +1096,9 @@ func rateBasedStatementSchema(level int) *schema.Schema {
 									},
 								},
 							},
-							"ip": emptySchema(),
+							"ip":              emptySchema(),
+							"ja3_fingerprint": rateLimitJAFingerprintConfigSchema(),
+							"ja4_fingerprint": rateLimitJAFingerprintConfigSchema(),
 							"label_namespace": {
 								Type:     schema.TypeList,
 								Optional: true,