[feature] support snmp v3 monitoring protocol (#1469)

apache · Jan 16, 2024 · 6d766a4 · 6d766a4
1 parent 20300f7
commit 6d766a4
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Showing 7 changed files with 776 additions and 15 deletions.
diff --git a/collector/src/main/java/org/dromara/hertzbeat/collector/collect/snmp/SnmpCollectImpl.java b/collector/src/main/java/org/dromara/hertzbeat/collector/collect/snmp/SnmpCollectImpl.java
@@ -29,20 +29,19 @@
 import lombok.extern.slf4j.Slf4j;
 import org.snmp4j.PDU;
 import org.snmp4j.Snmp;
+import org.snmp4j.mp.MPv3;
 import org.snmp4j.mp.SnmpConstants;
+import org.snmp4j.security.*;
 import org.snmp4j.smi.*;
 import org.snmp4j.util.*;
 import org.springframework.util.Assert;
 import org.snmp4j.*;
 import org.snmp4j.fluent.SnmpBuilder;
 import org.snmp4j.fluent.SnmpCompletableFuture;
 import org.snmp4j.fluent.TargetBuilder;
-import org.snmp4j.security.SecurityModel;
 import org.springframework.util.StringUtils;
 
 import java.io.IOException;
-import java.nio.Buffer;
-import java.nio.charset.Charset;
 import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutionException;
@@ -54,6 +53,9 @@
 @Slf4j
 public class SnmpCollectImpl extends AbstractCollect {
 
+    private static final String AES128 = "1";
+
+    private static final String SHA1 = "1";
     private static final String DEFAULT_PROTOCOL = "udp";
     private static final String OPERATION_GET = "get";
     private static final String OPERATION_WALK = "walk";
@@ -80,21 +82,31 @@ public void collect(CollectRep.MetricsData.Builder builder, long monitorId, Stri
         SnmpProtocol snmpProtocol = metrics.getSnmp();
         int timeout = CollectUtil.getTimeout(snmpProtocol.getTimeout());
         int snmpVersion = getSnmpVersion(snmpProtocol.getVersion());
+        Snmp snmpService = null;
         try {
             SnmpBuilder snmpBuilder = new SnmpBuilder();
-            Snmp snmpService = getSnmpService(snmpVersion);
+            snmpService = getSnmpService(snmpVersion, snmpBuilder);
+            snmpService.listen();
             Target<?> target;
             Address targetAddress = GenericAddress.parse(DEFAULT_PROTOCOL + ":" + snmpProtocol.getHost()
                     + "/" + snmpProtocol.getPort());
             TargetBuilder<?> targetBuilder = snmpBuilder.target(targetAddress);
             if (snmpVersion == SnmpConstants.version3) {
+                TargetBuilder.PrivProtocol PrivPasswordEncryption = getPrivPasswordEncryption(snmpProtocol.getPrivPasswordEncryption());
+                TargetBuilder.AuthProtocol authPasswordEncryption = getAuthPasswordEncryption(snmpProtocol.getAuthPasswordEncryption());
                 target = targetBuilder
                         .user(snmpProtocol.getUsername())
-                        .auth(TargetBuilder.AuthProtocol.hmac192sha256).authPassphrase(snmpProtocol.getAuthPassphrase())
-                        .priv(TargetBuilder.PrivProtocol.aes128).privPassphrase(snmpProtocol.getPrivPassphrase())
+                        .auth(authPasswordEncryption).authPassphrase(snmpProtocol.getAuthPassphrase())
+                        .priv(PrivPasswordEncryption).privPassphrase(snmpProtocol.getPrivPassphrase())
                         .done()
                         .timeout(timeout).retries(1)
                         .build();
+                USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(MPv3.createLocalEngineID()), 0);
+                SecurityModels.getInstance().addSecurityModel(usm);
+                snmpService.getUSM().addUser(
+                        new OctetString(snmpProtocol.getUsername()),
+                        new UsmUser(new OctetString(snmpProtocol.getUsername()), AuthMD5.ID, new OctetString(snmpProtocol.getAuthPassphrase()), PrivDES.ID, new OctetString(snmpProtocol.getPrivPassphrase()))
+                );
             } else if (snmpVersion == SnmpConstants.version1) {
                 target = targetBuilder
                         .v1()
@@ -113,7 +125,7 @@ public void collect(CollectRep.MetricsData.Builder builder, long monitorId, Stri
             String operation = snmpProtocol.getOperation();
             operation = StringUtils.hasText(operation) ? operation : OPERATION_GET;
             if (OPERATION_GET.equalsIgnoreCase(operation)) {
-                PDU pdu = targetBuilder.pdu().type(PDU.GET).oids(snmpProtocol.getOids().values().toArray(new String[0])).build();
+                PDU pdu = targetBuilder.pdu().type(PDU.GET).oids(snmpProtocol.getOids().values().toArray(new String[0])).contextName(snmpProtocol.getContextName()).build();
                 SnmpCompletableFuture snmpRequestFuture = SnmpCompletableFuture.send(snmpService, target, pdu);
                 List<VariableBinding> vbs = snmpRequestFuture.get().getAll();
                 long responseTime = System.currentTimeMillis() - startTime;
@@ -212,6 +224,16 @@ public void collect(CollectRep.MetricsData.Builder builder, long monitorId, Stri
             log.warn("[snmp collect] error: {}", errorMsg, e);
             builder.setCode(CollectRep.Code.FAIL);
             builder.setMsg(errorMsg);
+        } finally {
+            if (snmpService != null) {
+                if (snmpVersion == SnmpConstants.version3) {
+                    try {
+                        snmpClose(snmpService, SnmpConstants.version3);
+                    } catch (IOException e) {
+                        throw new RuntimeException(e);
+                    }
+                }
+            }
         }
     }
 
@@ -231,14 +253,13 @@ private void validateParams(Metrics metrics) {
         Assert.notNull(snmpProtocol.getVersion(), "snmp version is required.");
     }
 
-    private synchronized Snmp getSnmpService(int snmpVersion) throws IOException {
+    private synchronized Snmp getSnmpService(int snmpVersion, SnmpBuilder snmpBuilder) throws IOException {
         Snmp snmpService = versionSnmpService.get(snmpVersion);
         if (snmpService != null) {
             return snmpService;
         }
-        SnmpBuilder snmpBuilder = new SnmpBuilder();
         if (snmpVersion == SnmpConstants.version3) {
-            snmpService = snmpBuilder.udp().v3().usm().threads(4).build();
+            snmpService = snmpBuilder.udp().v3().securityProtocols(SecurityProtocols.SecurityProtocolSet.maxCompatibility).usm().threads(4).build();
         } else if (snmpVersion == SnmpConstants.version1) {
             snmpService = snmpBuilder.udp().v1().threads(4).build();
         } else {
@@ -282,4 +303,22 @@ private String bingdingHexValueToString(VariableBinding binding) {
             return hexString;
         }
     }
+
+    private void snmpClose(Snmp snmp, int version) throws IOException {
+        snmp.close();
+        versionSnmpService.remove(version);
+    }
+
+    private TargetBuilder.PrivProtocol getPrivPasswordEncryption(String privPasswordEncryption) {
+        if (privPasswordEncryption == null) return TargetBuilder.PrivProtocol.des;
+        else if (AES128.equals(privPasswordEncryption)) {
+            return TargetBuilder.PrivProtocol.aes128;
+        } else return TargetBuilder.PrivProtocol.des;
+    }
+
+    private TargetBuilder.AuthProtocol getAuthPasswordEncryption(String authPasswordEncryption) {
+        if (authPasswordEncryption == null) return TargetBuilder.AuthProtocol.md5;
+        else if (SHA1.equals(authPasswordEncryption))  return TargetBuilder.AuthProtocol.sha1;
+        else return TargetBuilder.AuthProtocol.md5;
+    }
 }
diff --git a/common/src/main/java/org/dromara/hertzbeat/common/entity/job/protocol/SnmpProtocol.java b/common/src/main/java/org/dromara/hertzbeat/common/entity/job/protocol/SnmpProtocol.java
@@ -77,4 +77,21 @@ public class SnmpProtocol {
      * oid map
      */
     private Map<String, String> oids;
+
+    /**
+     * contextName
+     */
+    private String contextName = "";
+
+    /**
+     * authPasswordEncryption
+     * v3 需要
+     */
+    private String authPasswordEncryption;
+
+    /**
+     * privPasswordEncryption
+     * v3 需要
+     */
+    private String privPasswordEncryption;
 }
diff --git a/manager/src/main/resources/define/app-cisco_switch.yml b/manager/src/main/resources/define/app-cisco_switch.yml
@@ -91,6 +91,8 @@ params:
         value: 0
       - label: SNMPv2c
         value: 1
+      - label: SNMPv3
+        value: 3
   # field-param field key
   # field-变量字段标识符
   - field: community
@@ -107,12 +109,134 @@ params:
     limit: 100
     # required-true or false
     # required-是否是必输项 true-必填 false-可选
-    required: true
+    required: false
     # 参数输入框提示信息
     # param field input placeholder
     placeholder: 'Snmp community for v1 v2c'
   # field-param field key
   # field-变量字段标识符
+  - field: username
+    # name-param field display i18n name
+    # name-参数字段显示名称
+    name:
+      zh-CN: SNMP username
+      en-US: SNMP username
+    # type-param field type(most mapping the html input type)
+    # type-字段类型,样式(大部分映射input标签type属性)
+    type: text
+    # when type is text, use limit to limit string length
+    # 当type为text时,用limit表示字符串限制大小
+    limit: 20
+    # required-true or false
+    # required-是否是必输项 true-必填 false-可选
+    required: false
+    # 参数输入框提示信息
+    # param field input placeholder
+    placeholder: 'Snmp username for v3'
+  # field-param field key
+  # field-变量字段标识符
+  - field: contextName
+    # name-param field display i18n name
+    # name-参数字段显示名称
+    name:
+      zh-CN: SNMP contextName
+      en-US: SNMP contextName
+    # type-param field type(most mapping the html input type)
+    # type-字段类型,样式(大部分映射input标签type属性)
+    type: text
+    # when type is text, use limit to limit string length
+    # 当type为text时,用limit表示字符串限制大小
+    limit: 100
+    # required-true or false
+    # required-是否是必输项 true-必填 false-可选
+    required: false
+    # 参数输入框提示信息
+    # param field input placeholder
+    placeholder: 'Snmp contextName for v3'
+    # field-param field key
+    # field-变量字段标识符
+  - field: authPassphrase
+    # name-param field display i18n name
+    # name-参数字段显示名称
+    name:
+      zh-CN: SNMP authPassword
+      en-US: SNMP authPassword
+    # type-param field type(most mapping the html input type)
+    # type-字段类型,样式(大部分映射input标签type属性)
+    type: text
+    # when type is text, use limit to limit string length
+    # 当type为text时,用limit表示字符串限制大小
+    limit: 100
+    # required-true or false
+    # required-是否是必输项 true-必填 false-可选
+    required: false
+    # 参数输入框提示信息
+    # param field input placeholder
+    placeholder: 'Snmp authPassword for v3'
+    # field-param field key
+    # field-变量字段标识符
+  - field: authPasswordEncryption
+    # name-param field display i18n name
+    # name-参数字段显示名称
+    name:
+      zh-CN: authPassword 加密方式
+      en-US: authPassword Encryption
+    # type-param field type(radio mapping the html radio tag)
+    # type-当type为radio时,前端用radio展示开关
+    type: radio
+    # required-true or false
+    # required-是否是必输项 true-必填 false-可选
+    required: false
+    # when type is radio checkbox, use option to show optional values {name1:value1,name2:value2}
+    # 当type为radio单选框, checkbox复选框时, option表示可选项值列表 {name1:value1,name2:value2}
+    options:
+      - label: MD5
+        value: 0
+      - label: SHA1
+        value: 1
+    # field-param field key
+    # field-变量字段标识符
+  - field: privPassphrase
+    # name-param field display i18n name
+    # name-参数字段显示名称
+    name:
+      zh-CN: SNMP privPassphrase
+      en-US: SNMP privPassphrase
+    # type-param field type(most mapping the html input type)
+    # type-字段类型,样式(大部分映射input标签type属性)
+    type: text
+    # when type is text, use limit to limit string length
+    # 当type为text时,用limit表示字符串限制大小
+    limit: 100
+    # required-true or false
+    # required-是否是必输项 true-必填 false-可选
+    required: false
+    # 参数输入框提示信息
+    # param field input placeholder
+    placeholder: 'Snmp authPassword for v3'
+    # field-param field key
+    # field-变量字段标识符
+  - field: privPasswordEncryption
+    # name-param field display i18n name
+    # name-参数字段显示名称
+    name:
+      zh-CN: privPassword 加密方式
+      en-US: privPassword Encryption
+    # type-param field type(radio mapping the html radio tag)
+    # type-当type为radio时,前端用radio展示开关
+    type: radio
+    # required-true or false
+    # required-是否是必输项 true-必填 false-可选
+    required: false
+    # when type is radio checkbox, use option to show optional values {name1:value1,name2:value2}
+    # 当type为radio单选框, checkbox复选框时, option表示可选项值列表 {name1:value1,name2:value2}
+    options:
+      - label: DES
+        value: 0
+      - label: AES128
+        value: 1
+    # field-param field key
+    # field-变量字段标识符
   - field: timeout
     # name-param field display i18n name
     # name-参数字段显示名称
@@ -171,6 +295,18 @@ metrics:
       host: ^_^host^_^
       # server port
       port: ^_^port^_^
+      # snmp username
+      username: ^_^username^_^
+      # snmp authPassphrase
+      authPassphrase: ^_^authPassphrase^_^
+      # snmp privPassphrase
+      privPassphrase: ^_^privPassphrase^_^
+      # snmp privPasswordEncryption
+      privPasswordEncryption: ^_^privPasswordEncryption^_^
+      # snmp authPasswordEncryption
+      authPasswordEncryption: ^_^authPasswordEncryption^_^
+      # contextName
+      contextName: ^_^contextName^_^
       # snmp connect timeout
       timeout: ^_^timeout^_^
       # snmp community
@@ -259,6 +395,12 @@ metrics:
     snmp:
       host: ^_^host^_^
       port: ^_^port^_^
+      username: ^_^username^_^
+      authPassphrase: ^_^authPassphrase^_^
+      privPassphrase: ^_^privPassphrase^_^
+      privPasswordEncryption: ^_^privPasswordEncryption^_^
+      authPasswordEncryption: ^_^authPasswordEncryption^_^
+      contextName: ^_^contextName^_^
       timeout: ^_^timeout^_^
       community: ^_^community^_^
       version: ^_^version^_^