Merge pull request #2737 from vulgraph/backport/CVE-2024-10964-v2.9

[v2.9] Backport CVE-2024-10964: plugin: buffer overflow in library strcpy

.github/workflows/check.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   clang_format_check:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
 
     steps:
       # checkout
@@ -18,7 +18,7 @@ jobs:
           submodules: recursive
 
       - name: Run clang-format style check for C/C++ programs.
-        uses: DoozyX/clang-format-lint-action@v0.12
+        uses: DoozyX/clang-format-lint-action@v0.18
         with:
           source: 'src plugins include tests'
           exclude: 'include/neuron/utils/uthash.h include/neuron/utils/utarray.h include/neuron/utils/utlist.h include/neuron/utils/zlog.h'

.github/workflows/ci.yml

@@ -8,13 +8,13 @@ on:
       - published
 
 env:
-  VERSION: 2.9.3
+  VERSION: 2.9.5
   UI_VERSION: 2.6.1
   BRANCH: v2.9 
 
 jobs:
   cross-build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         arch:
@@ -52,14 +52,14 @@ jobs:
         run: |
           ./package-sdk.sh -p ${{ matrix.arch[2] }} -n neuron-sdk-$VERSION
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
-          name: neuron-sdk
+          name: neuron-sdk-${{ matrix.arch[2] }}
           path: |
             neuron-sdk-*.tar.gz
 
   build-debug-sdk:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         arch:
@@ -83,7 +83,7 @@ jobs:
         run: |
           ./package-sdk.sh -p ${{ matrix.arch[2] }} -n neuron-sdk-debug-$VERSION
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: neuron-sdk
           path: |
@@ -102,7 +102,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: neuron-sdk
       

include/neuron/connection/neu_connection.h

@@ -254,6 +254,8 @@ ssize_t neu_conn_recv(neu_conn_t *conn, uint8_t *buf, ssize_t len);
 ssize_t neu_conn_udp_recvfrom(neu_conn_t *conn, uint8_t *buf, ssize_t len,
                               void *src);
 
+void neu_conn_clear_recv_buffer(neu_conn_t *conn);
+
 /**
  * @brief Specify the client to send data.
  *

include/neuron/define.h

@@ -24,7 +24,7 @@
 
 #define NEU_VERSION_MAJOR 2
 #define NEU_VERSION_MINOR 9
-#define NEU_VERSION_FIX 3
+#define NEU_VERSION_FIX 5
 
 #define NEU_GET_VERSION_MAJOR(V) ((0xffff0000 & V) >> 16)
 #define NEU_GET_VERSION_MINOR(V) ((0x0000ff00 & V) >> 8)
@@ -34,7 +34,7 @@
 #define NEU_TAG_NAME_LEN 128
 #define NEU_TAG_ADDRESS_LEN 128
 #define NEU_TAG_DESCRIPTION_LEN 128
-#define NEU_GROUP_MAX_PER_NODE 512
+#define NEU_GROUP_MAX_PER_NODE 1024
 #define NEU_GROUP_NAME_LEN 128
 #define NEU_GROUP_INTERVAL_LIMIT 100
 #define NEU_DEFAULT_GROUP_INTERVAL 100

include/neuron/json/neu_json_rw.h

@@ -63,6 +63,7 @@ typedef struct {
 
 int neu_json_encode_read_resp(void *json_object, void *param);
 int neu_json_encode_read_resp1(void *json_object, void *param);
+int neu_json_encode_read_resp2(void *json_object, void *param);
 int neu_json_encode_read_paginate_resp(void *json_object, void *param);
 
 typedef struct {

include/neuron/tag.h

@@ -44,6 +44,10 @@ typedef enum {
     NEU_DATATAG_ENDIAN_BL32 = 5, // #BL 2,1,4,3
     NEU_DATATAG_ENDIAN_L64  = 6, // #L  8,7,6,5,4,3,2,1
     NEU_DATATAG_ENDIAN_B64  = 7, // #B  1,2,3,4,5,6,7,8
+    NEU_DATATAG_ENDIAN_LL64 = 8,
+    NEU_DATATAG_ENDIAN_LB64 = 9,
+    NEU_DATATAG_ENDIAN_BB64 = 10,
+    NEU_DATATAG_ENDIAN_BL64 = 11,
 } neu_datatag_endian_e;
 
 typedef enum {
@@ -63,6 +67,7 @@ typedef union {
     } value32;
     struct {
         neu_datatag_endian_e endian;
+        bool                 is_default;
     } value64;
     struct {
         uint16_t                  length;

include/neuron/type.h

@@ -738,6 +738,42 @@ static inline uint64_t neu_htonll(uint64_t u)
     return ret;
 }
 
+static inline uint64_t neu_htonlb(uint64_t u)
+{
+    uint8_t *in        = (uint8_t *) &u;
+    uint64_t out       = 0;
+    uint8_t *out_bytes = (uint8_t *) &out;
+
+    out_bytes[0] = in[1];
+    out_bytes[1] = in[0];
+    out_bytes[2] = in[3];
+    out_bytes[3] = in[2];
+    out_bytes[4] = in[5];
+    out_bytes[5] = in[4];
+    out_bytes[6] = in[7];
+    out_bytes[7] = in[6];
+
+    return out;
+}
+
+static inline uint64_t neu_htonbl(uint64_t u)
+{
+    uint8_t *in        = (uint8_t *) &u;
+    uint64_t out       = 0;
+    uint8_t *out_bytes = (uint8_t *) &out;
+
+    out_bytes[0] = in[6];
+    out_bytes[1] = in[7];
+    out_bytes[2] = in[4];
+    out_bytes[3] = in[5];
+    out_bytes[4] = in[2];
+    out_bytes[5] = in[3];
+    out_bytes[6] = in[0];
+    out_bytes[7] = in[1];
+
+    return out;
+}
+
 static inline uint64_t neu_ntohll(uint64_t u)
 {
     return neu_htonll(u);

plugins/modbus/modbus-rtu.json

@@ -18,11 +18,11 @@
 		},
 		{
 			"type": 7,
-			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|)$"
+			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|#BB|#BL|#LL|#LB|)$"
 		},
 		{
 			"type": 8,
-			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|)$"
+			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|#BB|#BL|#LL|#LB|)$"
 		},
 		{
 			"type": 9,
@@ -30,7 +30,7 @@
 		},
 		{
 			"type": 10,
-			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|)$"
+			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|#BB|#BL|#LL|#LB|)$"
 		},
 		{
 			"type": 11,
@@ -106,6 +106,35 @@
 			"max": 10000
 		}
 	},
+	"endianess_64": {
+		"name": "Endianess of 8-Byte Data",
+		"name_zh": "8 字节数据字节序",
+		"description": "Tag byte order, applicable to int64, uint64 and double types",
+		"description_zh": "点位字节序，适用于 int64，uint64 和 double 类型",
+		"attribute": "required",
+		"type": "map",
+		"default": 1,
+		"valid": {
+			"map": [
+				{
+					"key": "12 34 56 78",
+					"value": 1
+				},
+				{
+					"key": "21 43 65 87",
+					"value": 2
+				},
+				{
+					"key": "87 65 43 21",
+					"value": 3
+				},
+				{
+					"key": "78 56 34 12",
+					"value": 4
+				}
+			]
+		}
+	},
 	"interval": {
 		"name": "Send Interval",
 		"name_zh": "指令发送间隔",

plugins/modbus/modbus-tcp.json

@@ -18,11 +18,11 @@
 		},
 		{
 			"type": 7,
-			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|)$"
+			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|#BB|#BL|#LL|#LB|)$"
 		},
 		{
 			"type": 8,
-			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|)$"
+			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|#BB|#BL|#LL|#LB|)$"
 		},
 		{
 			"type": 9,
@@ -30,7 +30,7 @@
 		},
 		{
 			"type": 10,
-			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|)$"
+			"regex": "^[0-9]+![3-4][0-9]+(#B|#L|#BB|#BL|#LL|#LB|)$"
 		},
 		{
 			"type": 11,
@@ -112,6 +112,35 @@
 			"max": 10000
 		}
 	},
+	"endianess_64": {
+		"name": "Endianess of 8-Byte Data",
+		"name_zh": "8 字节数据字节序",
+		"description": "Tag byte order, applicable to int64, uint64 and double types",
+		"description_zh": "点位字节序，适用于 int64，uint64 和 double 类型",
+		"attribute": "required",
+		"type": "map",
+		"default": 1,
+		"valid": {
+			"map": [
+				{
+					"key": "12 34 56 78",
+					"value": 1
+				},
+				{
+					"key": "21 43 65 87",
+					"value": 2
+				},
+				{
+					"key": "87 65 43 21",
+					"value": 3
+				},
+				{
+					"key": "78 56 34 12",
+					"value": 4
+				}
+			]
+		}
+	},
 	"interval": {
 		"name": "Send Interval",
 		"name_zh": "指令发送间隔",

plugins/modbus/modbus.h

@@ -66,6 +66,13 @@ typedef enum modbus_area {
     MODBUS_AREA_HOLD_REGISTER  = 4,
 } modbus_area_e;
 
+typedef enum modbus_endianess_64 {
+    MODBUS_LL = 1, // 12 34 56 78
+    MODBUS_LB = 2, // 21 43 65 87
+    MODBUS_BB = 3, // 87 65 43 21
+    MODBUS_BL = 4, // 78 56 34 12
+} modbus_endianess_64;
+
 struct modbus_header {
     uint16_t seq;
     uint16_t protocol;

plugins/modbus/modbus_point.c

@@ -230,7 +230,8 @@ modbus_read_cmd_sort_t *modbus_tag_sort(UT_array *tags, uint16_t max_byte)
     return sort_result;
 }
 
-int cal_n_byte(int type, neu_value_u *value, neu_datatag_addr_option_u option)
+int cal_n_byte(int type, neu_value_u *value, neu_datatag_addr_option_u option,
+               modbus_endianess_64 endianess_64, bool default_tag_endian_64)
 {
     int n = 0;
     switch (type) {
@@ -249,6 +250,9 @@ int cal_n_byte(int type, neu_value_u *value, neu_datatag_addr_option_u option)
     case NEU_TYPE_DOUBLE:
     case NEU_TYPE_INT64:
     case NEU_TYPE_UINT64:
+        if (default_tag_endian_64) {
+            modbus_convert_endianess_64(value, endianess_64);
+        }
         n          = sizeof(uint64_t);
         value->u64 = neu_htonll(value->u64);
         break;
@@ -282,7 +286,8 @@ int cal_n_byte(int type, neu_value_u *value, neu_datatag_addr_option_u option)
     return n;
 }
 
-modbus_write_cmd_sort_t *modbus_write_tags_sort(UT_array *tags)
+modbus_write_cmd_sort_t *
+modbus_write_tags_sort(UT_array *tags, modbus_endianess_64 endianess_64)
 {
     neu_tag_sort_result_t *result =
         neu_tag_sort(tags, tag_sort_write, tag_cmp_write);
@@ -304,14 +309,17 @@ modbus_write_cmd_sort_t *modbus_write_tags_sort(UT_array *tags)
         utarray_foreach(result->sorts[i].tags, modbus_point_write_t **, tag_s)
         {
             if ((*tag_s)->point.area == MODBUS_AREA_COIL) {
-                n_byte_tag = cal_n_byte((*tag_s)->point.type, &(*tag_s)->value,
-                                        (*tag_s)->point.option);
+                n_byte_tag =
+                    cal_n_byte((*tag_s)->point.type, &(*tag_s)->value,
+                               (*tag_s)->point.option, endianess_64, true);
                 data_bit[k / 8] += ((*tag_s)->value.i8) << k % 8;
                 n_byte += n_byte_tag;
                 k++;
             } else {
-                n_byte_tag = cal_n_byte((*tag_s)->point.type, &(*tag_s)->value,
-                                        (*tag_s)->point.option);
+                n_byte_tag =
+                    cal_n_byte((*tag_s)->point.type, &(*tag_s)->value,
+                               (*tag_s)->point.option, endianess_64,
+                               (*tag_s)->point.option.value64.is_default);
                 memcpy(sort_result->cmd[i].bytes +
                            2 *
                                ((*tag_s)->point.start_address -
@@ -521,4 +529,24 @@ static bool tag_sort_write(neu_tag_sort_t *sort, void *tag,
     }
 
     return true;
+}
+
+void modbus_convert_endianess_64(neu_value_u *       value,
+                                 modbus_endianess_64 endianess_64)
+{
+    switch (endianess_64) {
+    case MODBUS_LL:
+        break;
+    case MODBUS_BB:
+        value->u64 = neu_htonll(value->u64);
+        break;
+    case MODBUS_LB:
+        value->u64 = neu_htonlb(value->u64);
+        break;
+    case MODBUS_BL:
+        value->u64 = neu_htonbl(value->u64);
+        break;
+    default:
+        break;
+    }
 }

plugins/modbus/modbus_point.h

@@ -79,9 +79,13 @@ typedef struct modbus_write_cmd_sort {
     modbus_write_cmd_t *cmd;
 } modbus_write_cmd_sort_t;
 
-modbus_read_cmd_sort_t * modbus_tag_sort(UT_array *tags, uint16_t max_byte);
-modbus_write_cmd_sort_t *modbus_write_tags_sort(UT_array *tags);
-void                     modbus_tag_sort_free(modbus_read_cmd_sort_t *cs);
+modbus_read_cmd_sort_t *modbus_tag_sort(UT_array *tags, uint16_t max_byte);
+modbus_write_cmd_sort_t *
+     modbus_write_tags_sort(UT_array *tags, modbus_endianess_64 endianess_64);
+void modbus_tag_sort_free(modbus_read_cmd_sort_t *cs);
+
+void modbus_convert_endianess_64(neu_value_u *       value,
+                                 modbus_endianess_64 endianess_64);
 
 #ifdef __cplusplus
 }

plugins/modbus/modbus_req.c

@@ -107,6 +107,8 @@ int modbus_send_msg(void *ctx, uint16_t n_byte, uint8_t *bytes)
     neu_plugin_t *plugin = (neu_plugin_t *) ctx;
     int           ret    = 0;
 
+    neu_conn_clear_recv_buffer(plugin->conn);
+
     plog_send_protocol(plugin, bytes, n_byte);
 
     if (plugin->is_server) {
@@ -412,6 +414,10 @@ int modbus_value_handle(void *ctx, uint8_t slave_id, uint16_t n_byte,
             case NEU_TYPE_DOUBLE:
             case NEU_TYPE_INT64:
             case NEU_TYPE_UINT64:
+                if ((*p_tag)->option.value64.is_default) {
+                    modbus_convert_endianess_64(&dvalue.value,
+                                                plugin->endianess_64);
+                }
                 dvalue.value.u64 = neu_ntohll(dvalue.value.u64);
                 break;
             case NEU_TYPE_BIT: {
@@ -675,6 +681,9 @@ int modbus_write(neu_plugin_t *plugin, void *req, neu_datatag_t *tag,
     case NEU_TYPE_DOUBLE:
     case NEU_TYPE_INT64:
     case NEU_TYPE_UINT64:
+        if (tag->option.value64.is_default) {
+            modbus_convert_endianess_64(&value, plugin->endianess_64);
+        }
         value.u64 = neu_htonll(value.u64);
         n_byte    = sizeof(uint64_t);
         break;
@@ -742,7 +751,7 @@ int modbus_write_tags(neu_plugin_t *plugin, void *req, UT_array *tags)
 
         utarray_push_back(gtags->tags, &p);
     }
-    gtags->cmd_sort = modbus_write_tags_sort(gtags->tags);
+    gtags->cmd_sort = modbus_write_tags_sort(gtags->tags, plugin->endianess_64);
     for (uint16_t i = 0; i < gtags->cmd_sort->n_cmd; i++) {
         uint16_t response_size = 0;
 

plugins/modbus/modbus_req.h

@@ -43,7 +43,9 @@ struct neu_plugin {
     uint16_t interval;
     uint16_t retry_interval;
     uint16_t max_retries;
-    uint16_t check_header;
+
+    modbus_endianess_64 endianess_64;
+    uint16_t            check_header;
 };
 
 void modbus_conn_connected(void *data, int fd);

plugins/modbus/modbus_rtu.c

@@ -167,6 +167,9 @@ static int driver_config(neu_plugin_t *plugin, const char *config)
     neu_json_elem_t retry_interval = { .name = "retry_interval",
                                        .t    = NEU_JSON_INT };
 
+    neu_json_elem_t endianess_64 = { .name = "endianess_64",
+                                     .t    = NEU_JSON_INT };
+
     ret = neu_parse_param((char *) config, &err_param, 3, &link, &timeout,
                           &interval);
     if (ret != 0) {
@@ -206,9 +209,16 @@ static int driver_config(neu_plugin_t *plugin, const char *config)
         retry_interval.v.val_int = 0;
     }
 
+    ret = neu_parse_param((char *) config, &err_param, 1, &endianess_64);
+    if (ret != 0) {
+        free(err_param);
+        endianess_64.v.val_int = MODBUS_LL;
+    }
+
     param.log              = plugin->common.log;
     plugin->max_retries    = max_retries.v.val_int;
     plugin->retry_interval = retry_interval.v.val_int;
+    plugin->endianess_64   = endianess_64.v.val_int;
 
     if (link.v.val_int == 0) {
         param.type = NEU_CONN_TTY_CLIENT;

plugins/modbus/modbus_tcp.c

@@ -163,6 +163,8 @@ static int driver_config(neu_plugin_t *plugin, const char *config)
                                        .t    = NEU_JSON_INT };
     neu_json_elem_t  check_header   = { .name = "check_header",
                                      .t    = NEU_JSON_INT };
+    neu_json_elem_t  endianess_64   = { .name = "endianess_64",
+                                     .t    = NEU_JSON_INT };
 
     ret = neu_parse_param((char *) config, &err_param, 5, &port, &host, &mode,
                           &timeout, &interval);
@@ -191,6 +193,12 @@ static int driver_config(neu_plugin_t *plugin, const char *config)
         retry_interval.v.val_int = 0;
     }
 
+    ret = neu_parse_param((char *) config, &err_param, 1, &endianess_64);
+    if (ret != 0) {
+        free(err_param);
+        endianess_64.v.val_int = MODBUS_LL;
+    }
+
     ret = neu_parse_param((char *) config, &err_param, 1, &check_header);
     if (ret != 0) {
         free(err_param);
@@ -201,6 +209,7 @@ static int driver_config(neu_plugin_t *plugin, const char *config)
     plugin->interval       = interval.v.val_int;
     plugin->max_retries    = max_retries.v.val_int;
     plugin->retry_interval = retry_interval.v.val_int;
+    plugin->endianess_64   = endianess_64.v.val_int;
     plugin->check_header   = check_header.v.val_int;
 
     if (mode.v.val_int == 1) {

plugins/mqtt/mqtt.json

@@ -1,247 +1,247 @@
 {
-  "client-id": {
-    "name": "Client ID",
-    "name_zh": "客户端 ID",
-    "description": "MQTT client id",
-    "description_zh": "MQTT 客户端 ID",
-    "type": "string",
-    "attribute": "required",
-    "default": "neuron_${random_str}",
-    "valid": {
-      "length": 255
-    }
-  },
-  "qos": {
-    "name": "QoS Level",
-    "name_zh": "QoS 等级",
-    "description": "MQTT QoS level for message delivery",
-    "description_zh": "MQTT 消息传输使用的服务质量等级",
-    "type": "map",
-    "attribute": "optional",
-    "default": 0,
-    "valid": {
-      "map": [
-        {
-          "key": "QoS 0",
-          "value": 0
-        },
-        {
-          "key": "QoS 1",
-          "value": 1
-        },
-        {
-          "key": "QoS 2",
-          "value": 2
-        }
-      ]
-    }
-  },
-  "format": {
-    "name": "Upload Format",
-    "name_zh": "上报数据格式",
-    "description": "JSON format of the data reported. In values-mode, data are split into `values` and `errors` sub objects. In tags-mode, tag data are put in a single array.",
-    "description_zh": "上报数据的 JSON 格式。在 values-format 格式下，数据被分为 `values` 和 `errors` 两个子对象。在 tags-format 格式下，数据被放在一个数组中。",
-    "attribute": "required",
-    "type": "map",
-    "default": 0,
-    "valid": {
-      "map": [
-        {
-          "key": "values-format",
-          "value": 0
-        },
-        {
-          "key": "tags-format",
-          "value": 1
-        }
-      ]
-    }
-  },
-  "write-req-topic": {
-    "name": "Write Request Topic",
-    "name_zh": "写请求主题",
-    "description": "MQTT topic to receive write request messages.",
-    "description_zh": "接收点位写入请求的 MQTT 主题。",
-    "attribute": "required",
-    "type": "string",
-    "default": "/neuron/${random_str}/write/req",
-    "valid": {
-      "length": 255
-    }
-  },
-  "write-resp-topic": {
-    "name": "Write Response Topic",
-    "name_zh": "写响应主题",
-    "description": "MQTT topic to send write response messages.",
-    "description_zh": "发送点位写入响应的 MQTT 主题。",
-    "attribute": "required",
-    "type": "string",
-    "default": "/neuron/${random_str}/write/resp",
-    "valid": {
-      "length": 255
-    }
-  },
-  "offline-cache": {
-    "name": "Offline Data Caching",
-    "name_zh": "离线缓存",
-    "description": "Offline caching switch. Cache MQTT messages when offline, and sync cached messages when back online.",
-    "description_zh": "离线缓存开关。连接断开时缓存 MQTT 消息，连接重建时同步缓存的 MQTT 消息到服务器。",
-    "attribute": "optional",
-    "type": "bool",
-    "default": false,
-    "valid": {}
-  },
-  "cache-mem-size": {
-    "name": "Cache Memory Size (MB)",
-    "name_zh": "缓存内存大小（MB）",
-    "description": "Max in-memory cache size in megabytes when MQTT connection exception occurs. Should be smaller than cache disk size.",
-    "description_zh": "当 MQTT 连接异常时，最大的内存缓存大小（单位：MB）。应该小于缓存磁盘大小。",
-    "type": "int",
-    "attribute": "required",
-    "condition": {
-      "field": "offline-cache",
-      "value": true
-    },
-    "valid": {
-      "min": 1,
-      "max": 1024
-    }
-  },
-  "cache-disk-size": {
-    "name": "Cache Disk Size (MB)",
-    "name_zh": "缓存磁盘大小（MB）",
-    "description": "Max in-disk cache size in megabytes when MQTT connection exception occurs. Should be larger than cache memory size. If nonzero, cache memory size should also be nonzero.",
-    "description_zh": "当 MQTT 连接异常时，最大的磁盘缓存大小（单位：MB）。应该大于缓存内存大小。如果不为 0，缓存内存大小也应该不为 0。",
-    "type": "int",
-    "attribute": "required",
-    "condition": {
-      "field": "offline-cache",
-      "value": true
-    },
-    "valid": {
-      "min": 1,
-      "max": 10240
-    }
-  },
-  "cache-sync-interval": {
-    "name": "Cache Sync Interval (MS)",
-    "name_zh": "缓存消息重传间隔（MS）",
-    "description": "When MQTT connection restores, cached messages will be synchronised to the broker. This controls the interval in milliseconds between each message to synchronise.",
-    "description_zh": "当 MQTT 连接重建后，缓存的消息会被同步到服务器。此配置项控制消息重传时每条消息之间的时间间隔，以毫秒为单位。",
-    "type": "int",
-    "attribute": "required",
-    "condition": {
-      "field": "offline-cache",
-      "value": true
-    },
-    "default": 100,
-    "valid": {
-      "min": 10,
-      "max": 120000
-    }
-  },
-  "host": {
-    "name": "Broker Host",
-    "name_zh": "服务器地址",
-    "description": "MQTT broker host",
-    "description_zh": "MQTT 服务器地址",
-    "attribute": "required",
-    "type": "string",
-    "default": "broker.emqx.io",
-    "valid": {
-      "length": 255
-    }
-  },
-  "port": {
-    "name": "Broker Port",
-    "name_zh": "服务器端口",
-    "description": "MQTT broker port",
-    "description_zh": "MQTT 服务器端口",
-    "attribute": "required",
-    "type": "int",
-    "default": 1883,
-    "valid": {
-      "min": 1024,
-      "max": 65535
-    }
-  },
-  "username": {
-    "name": "Username",
-    "name_zh": "用户名",
-    "description": "MQTT user name",
-    "description_zh": "MQTT 用户名",
-    "attribute": "optional",
-    "type": "string",
-    "default": "",
-    "valid": {
-      "length": 255
-    }
-  },
-  "password": {
-    "name": "Password",
-    "name_zh": "密码",
-    "description": "MQTT user password",
-    "description_zh": "MQTT 用户密码",
-    "attribute": "optional",
-    "type": "string",
-    "default": "",
-    "valid": {
-      "length": 255
-    }
-  },
-  "ssl": {
-    "name": "SSL",
-    "name_zh": "SSL",
-    "description": "Enable SSL connection",
-    "description_zh": "是否启用 SSL 连接",
-    "attribute": "optional",
-    "type": "bool",
-    "default": false,
-    "valid": {}
-  },
-  "ca": {
-    "name": "CA",
-    "name_zh": "CA 证书",
-    "description": "CA certificate which signs the server certificate",
-    "description_zh": "签发服务器证书的 CA 证书",
-    "attribute": "optional",
-    "type": "file",
-    "condition": {
-      "field": "ssl",
-      "value": true
-    },
-    "valid": {
-      "length": 81960
-    }
-  },
-  "cert": {
-    "name": "Client Cert",
-    "name_zh": "客户端证书",
-    "description": "Client x509 certificate when using two way authentication",
-    "description_zh": "使用双向认证时，客户端的 x509 证书",
-    "attribute": "optional",
-    "type": "file",
-    "condition": {
-      "field": "ssl",
-      "value": true
-    },
-    "valid": {
-      "length": 81960
-    }
-  },
-  "key": {
-    "name": "Client Private Key",
-    "name_zh": "客户端私钥",
-    "description": "Client private key when using two way authentication",
-    "description_zh": "使用双向认证时，客户端的私钥",
-    "attribute": "optional",
-    "type": "file",
-    "condition": {
-      "field": "ssl",
-      "value": true
-    },
-    "valid": {
-      "length": 81960
-    }
-  }
-}
+	"client-id": {
+		"name": "Client ID",
+		"name_zh": "客户端 ID",
+		"description": "MQTT client id",
+		"description_zh": "MQTT 客户端 ID",
+		"type": "string",
+		"attribute": "required",
+		"default": "neuron_${random_str}",
+		"valid": {
+			"length": 255
+		}
+	},
+	"qos": {
+		"name": "QoS Level",
+		"name_zh": "QoS 等级",
+		"description": "MQTT QoS level for message delivery",
+		"description_zh": "MQTT 消息传输使用的服务质量等级",
+		"type": "map",
+		"attribute": "optional",
+		"default": 0,
+		"valid": {
+			"map": [
+				{
+					"key": "QoS 0",
+					"value": 0
+				},
+				{
+					"key": "QoS 1",
+					"value": 1
+				},
+				{
+					"key": "QoS 2",
+					"value": 2
+				}
+			]
+		}
+	},
+	"format": {
+		"name": "Upload Format",
+		"name_zh": "上报数据格式",
+		"description": "JSON format of the data reported. In values-mode, data are split into `values` and `errors` sub objects. In tags-mode, tag data are put in a single array.",
+		"description_zh": "上报数据的 JSON 格式。在 values-format 格式下，数据被分为 `values` 和 `errors` 两个子对象。在 tags-format 格式下，数据被放在一个数组中。",
+		"attribute": "required",
+		"type": "map",
+		"default": 0,
+		"valid": {
+			"map": [
+				{
+					"key": "values-format",
+					"value": 0
+				},
+				{
+					"key": "tags-format",
+					"value": 1
+				}
+			]
+		}
+	},
+	"write-req-topic": {
+		"name": "Write Request Topic",
+		"name_zh": "写请求主题",
+		"description": "MQTT topic to receive write request messages.",
+		"description_zh": "接收点位写入请求的 MQTT 主题。",
+		"attribute": "required",
+		"type": "string",
+		"default": "/neuron/${random_str}/write/req",
+		"valid": {
+			"length": 255
+		}
+	},
+	"write-resp-topic": {
+		"name": "Write Response Topic",
+		"name_zh": "写响应主题",
+		"description": "MQTT topic to send write response messages.",
+		"description_zh": "发送点位写入响应的 MQTT 主题。",
+		"attribute": "required",
+		"type": "string",
+		"default": "/neuron/${random_str}/write/resp",
+		"valid": {
+			"length": 255
+		}
+	},
+	"offline-cache": {
+		"name": "Offline Data Caching",
+		"name_zh": "离线缓存",
+		"description": "Offline caching switch. Cache MQTT messages when offline, and sync cached messages when back online.",
+		"description_zh": "离线缓存开关。连接断开时缓存 MQTT 消息，连接重建时同步缓存的 MQTT 消息到服务器。",
+		"attribute": "optional",
+		"type": "bool",
+		"default": false,
+		"valid": {}
+	},
+	"cache-mem-size": {
+		"name": "Cache Memory Size (MB)",
+		"name_zh": "缓存内存大小（MB）",
+		"description": "Max in-memory cache size in megabytes when MQTT connection exception occurs. Should be smaller than cache disk size.",
+		"description_zh": "当 MQTT 连接异常时，最大的内存缓存大小（单位：MB）。应该小于缓存磁盘大小。",
+		"type": "int",
+		"attribute": "required",
+		"condition": {
+			"field": "offline-cache",
+			"value": true
+		},
+		"valid": {
+			"min": 1,
+			"max": 1024
+		}
+	},
+	"cache-disk-size": {
+		"name": "Cache Disk Size (MB)",
+		"name_zh": "缓存磁盘大小（MB）",
+		"description": "Max in-disk cache size in megabytes when MQTT connection exception occurs. Should be larger than cache memory size. If nonzero, cache memory size should also be nonzero.",
+		"description_zh": "当 MQTT 连接异常时，最大的磁盘缓存大小（单位：MB）。应该大于缓存内存大小。如果不为 0，缓存内存大小也应该不为 0。",
+		"type": "int",
+		"attribute": "required",
+		"condition": {
+			"field": "offline-cache",
+			"value": true
+		},
+		"valid": {
+			"min": 1,
+			"max": 10240
+		}
+	},
+	"cache-sync-interval": {
+		"name": "Cache Sync Interval (MS)",
+		"name_zh": "缓存消息重传间隔（MS）",
+		"description": "When MQTT connection restores, cached messages will be synchronised to the broker. This controls the interval in milliseconds between each message to synchronise.",
+		"description_zh": "当 MQTT 连接重建后，缓存的消息会被同步到服务器。此配置项控制消息重传时每条消息之间的时间间隔，以毫秒为单位。",
+		"type": "int",
+		"attribute": "required",
+		"condition": {
+			"field": "offline-cache",
+			"value": true
+		},
+		"default": 100,
+		"valid": {
+			"min": 10,
+			"max": 120000
+		}
+	},
+	"host": {
+		"name": "Broker Host",
+		"name_zh": "服务器地址",
+		"description": "MQTT broker host",
+		"description_zh": "MQTT 服务器地址",
+		"attribute": "required",
+		"type": "string",
+		"default": "broker.emqx.io",
+		"valid": {
+			"length": 255
+		}
+	},
+	"port": {
+		"name": "Broker Port",
+		"name_zh": "服务器端口",
+		"description": "MQTT broker port",
+		"description_zh": "MQTT 服务器端口",
+		"attribute": "required",
+		"type": "int",
+		"default": 1883,
+		"valid": {
+			"min": 1,
+			"max": 65535
+		}
+	},
+	"username": {
+		"name": "Username",
+		"name_zh": "用户名",
+		"description": "MQTT user name",
+		"description_zh": "MQTT 用户名",
+		"attribute": "optional",
+		"type": "string",
+		"default": "",
+		"valid": {
+			"length": 255
+		}
+	},
+	"password": {
+		"name": "Password",
+		"name_zh": "密码",
+		"description": "MQTT user password",
+		"description_zh": "MQTT 用户密码",
+		"attribute": "optional",
+		"type": "string",
+		"default": "",
+		"valid": {
+			"length": 255
+		}
+	},
+	"ssl": {
+		"name": "SSL",
+		"name_zh": "SSL",
+		"description": "Enable SSL connection",
+		"description_zh": "是否启用 SSL 连接",
+		"attribute": "optional",
+		"type": "bool",
+		"default": false,
+		"valid": {}
+	},
+	"ca": {
+		"name": "CA",
+		"name_zh": "CA 证书",
+		"description": "CA certificate which signs the server certificate",
+		"description_zh": "签发服务器证书的 CA 证书",
+		"attribute": "optional",
+		"type": "file",
+		"condition": {
+			"field": "ssl",
+			"value": true
+		},
+		"valid": {
+			"length": 81960
+		}
+	},
+	"cert": {
+		"name": "Client Cert",
+		"name_zh": "客户端证书",
+		"description": "Client x509 certificate when using two way authentication",
+		"description_zh": "使用双向认证时，客户端的 x509 证书",
+		"attribute": "optional",
+		"type": "file",
+		"condition": {
+			"field": "ssl",
+			"value": true
+		},
+		"valid": {
+			"length": 81960
+		}
+	},
+	"key": {
+		"name": "Client Private Key",
+		"name_zh": "客户端私钥",
+		"description": "Client private key when using two way authentication",
+		"description_zh": "使用双向认证时，客户端的私钥",
+		"attribute": "optional",
+		"type": "file",
+		"condition": {
+			"field": "ssl",
+			"value": true
+		},
+		"valid": {
+			"length": 81960
+		}
+	}
+}

plugins/mqtt/mqtt_handle.c

@@ -70,7 +70,7 @@ char *generate_upload_json(neu_plugin_t *plugin, neu_reqresp_trans_data_t *data,
                                   neu_json_encode_read_periodic_resp,
                                   &json_str);
     } else if (MQTT_UPLOAD_FORMAT_TAGS == format) { // tags
-        neu_json_encode_with_mqtt(&json, neu_json_encode_read_resp, &header,
+        neu_json_encode_with_mqtt(&json, neu_json_encode_read_resp2, &header,
                                   neu_json_encode_read_periodic_resp,
                                   &json_str);
     } else {

plugins/restful/plugin_handle.c

@@ -40,7 +40,7 @@ void handle_add_plugin(nng_aio *aio)
 
             header.ctx  = aio;
             header.type = NEU_REQ_ADD_PLUGIN;
-            strcpy(cmd.library, req->library);
+            strncpy(cmd.library, req->library, NEU_PLUGIN_LIBRARY_LEN);
             cmd.schema_file = req->schema_file;
             cmd.so_file     = req->so_file;
             ret             = neu_plugin_op(plugin, header, &cmd);
@@ -64,7 +64,7 @@ void handle_update_plugin(nng_aio *aio)
 
             header.ctx  = aio;
             header.type = NEU_REQ_UPDATE_PLUGIN;
-            strcpy(cmd.library, req->library);
+            strncpy(cmd.library, req->library, NEU_PLUGIN_LIBRARY_LEN);
             cmd.schema_file = req->schema_file;
             cmd.so_file     = req->so_file;
             ret             = neu_plugin_op(plugin, header, &cmd);

src/adapter/driver/driver.c

@@ -237,8 +237,7 @@ static void update_im(neu_adapter_t *adapter, const char *group,
     }
     neu_datatag_t *first = utarray_front(tags);
 
-    if (first == NULL ||
-        !neu_tag_attribute_test(first, NEU_ATTRIBUTE_SUBSCRIBE)) {
+    if (first == NULL) {
         utarray_free(tags);
         nlog_debug("update immediately, driver: %s, "
                    "group: %s, tag: %s, type: %s, "
@@ -757,9 +756,17 @@ static void fix_value(neu_datatag_t *tag, neu_type_e value_type,
     case NEU_TYPE_LWORD:
         switch (tag->option.value64.endian) {
         case NEU_DATATAG_ENDIAN_B64:
+        case NEU_DATATAG_ENDIAN_BB64:
             value->value.u64 = neu_ntohll(value->value.u64);
             break;
+        case NEU_DATATAG_ENDIAN_LB64:
+            value->value.u64 = neu_htonlb(value->value.u64);
+            break;
+        case NEU_DATATAG_ENDIAN_BL64:
+            value->value.u64 = neu_htonbl(value->value.u64);
+            break;
         case NEU_DATATAG_ENDIAN_L64:
+        case NEU_DATATAG_ENDIAN_LL64:
         default:
             break;
         }
@@ -860,7 +867,8 @@ int check_value_decimal(neu_type_e write_type, double result, int64_t value_min,
         return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
     } else if (result < value_min || result > value_max) {
         return NEU_ERR_PLUGIN_TAG_VALUE_OUT_OF_RANGE;
-    } else if (almost_equal(ceil(result), result, EPSILON)) {
+    } else if (almost_equal(ceil(result), result, EPSILON) ||
+               almost_equal(floor(result), result, EPSILON)) {
         return NEU_ERR_SUCCESS;
     } else {
         return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
@@ -910,27 +918,26 @@ int is_value_in_range(neu_type_e tag_type, int64_t value, double value_d,
         case NEU_TYPE_UINT64:
             if (write_type != NEU_TYPE_INT64 && write_type != NEU_TYPE_DOUBLE) {
                 return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
-            } else if (almost_equal(ceil(result), result, EPSILON)) {
+            } else if (almost_equal(ceil(result), result, EPSILON) ||
+                       almost_equal(floor(result), result, EPSILON)) {
                 return NEU_ERR_SUCCESS;
             } else {
                 return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
             }
         case NEU_TYPE_FLOAT:
-            if (write_type != NEU_TYPE_DOUBLE) {
+            if (write_type != NEU_TYPE_DOUBLE && write_type != NEU_TYPE_INT64) {
                 return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
-            } else if (result < (int64_t) -FLT_MAX ||
-                       result > (int64_t) FLT_MAX) {
+            }
+            if (result < (int64_t) -FLT_MAX || result > (int64_t) FLT_MAX) {
                 return NEU_ERR_PLUGIN_TAG_VALUE_OUT_OF_RANGE;
             } else {
                 return NEU_ERR_SUCCESS;
             }
         case NEU_TYPE_DOUBLE:
-            if (write_type != NEU_TYPE_DOUBLE) {
+            if (write_type != NEU_TYPE_DOUBLE && write_type != NEU_TYPE_INT64) {
                 return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
-            } else {
-                return NEU_ERR_SUCCESS;
             }
-            return check_value(write_type, result, INT16_MIN, INT16_MAX);
+            return NEU_ERR_SUCCESS;
         case NEU_TYPE_STRING:
         case NEU_TYPE_BOOL:
         case NEU_TYPE_BIT:
@@ -974,20 +981,19 @@ int is_value_in_range(neu_type_e tag_type, int64_t value, double value_d,
                 return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
             }
         case NEU_TYPE_FLOAT:
-            if (write_type != NEU_TYPE_DOUBLE) {
+            if (write_type != NEU_TYPE_DOUBLE && write_type != NEU_TYPE_INT64) {
                 return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
-            } else if (value < (int64_t) -FLT_MAX ||
-                       value > (int64_t) FLT_MAX) {
+            }
+            if (value < (int64_t) -FLT_MAX || value > (int64_t) FLT_MAX) {
                 return NEU_ERR_PLUGIN_TAG_VALUE_OUT_OF_RANGE;
             } else {
                 return NEU_ERR_SUCCESS;
             }
         case NEU_TYPE_DOUBLE:
-            if (write_type != NEU_TYPE_DOUBLE) {
+            if (write_type != NEU_TYPE_DOUBLE && write_type != NEU_TYPE_INT64) {
                 return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
-            } else {
-                return NEU_ERR_SUCCESS;
             }
+            return NEU_ERR_SUCCESS;
         case NEU_TYPE_STRING:
             if (write_type != NEU_TYPE_STRING) {
                 return NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH;
@@ -2180,9 +2186,17 @@ static void read_report_group(int64_t timestamp, int64_t timeout,
         case NEU_TYPE_UINT64:
             switch (tag->option.value64.endian) {
             case NEU_DATATAG_ENDIAN_B64:
+            case NEU_DATATAG_ENDIAN_BB64:
                 value.value.value.u64 = neu_htonll(value.value.value.u64);
                 break;
+            case NEU_DATATAG_ENDIAN_LB64:
+                value.value.value.u64 = neu_htonlb(value.value.value.u64);
+                break;
+            case NEU_DATATAG_ENDIAN_BL64:
+                value.value.value.u64 = neu_htonbl(value.value.value.u64);
+                break;
             case NEU_DATATAG_ENDIAN_L64:
+            case NEU_DATATAG_ENDIAN_LL64:
             default:
                 break;
             }
@@ -2345,9 +2359,17 @@ static void read_group(int64_t timestamp, int64_t timeout,
         case NEU_TYPE_UINT64:
             switch (tag->option.value64.endian) {
             case NEU_DATATAG_ENDIAN_B64:
+            case NEU_DATATAG_ENDIAN_BB64:
                 value.value.value.u64 = neu_htonll(value.value.value.u64);
                 break;
+            case NEU_DATATAG_ENDIAN_LB64:
+                value.value.value.u64 = neu_htonlb(value.value.value.u64);
+                break;
+            case NEU_DATATAG_ENDIAN_BL64:
+                value.value.value.u64 = neu_htonbl(value.value.value.u64);
+                break;
             case NEU_DATATAG_ENDIAN_L64:
+            case NEU_DATATAG_ENDIAN_LL64:
             default:
                 break;
             }
@@ -2456,6 +2478,13 @@ static void read_group_paginate(int64_t timestamp, int64_t timeout,
         tag_value.datatag.option      = tag->option;
         memcpy(tag_value.datatag.meta, tag->meta, NEU_TAG_META_LENGTH);
 
+        if (tag->attribute == NEU_ATTRIBUTE_WRITE) {
+            tag_value.value.type         = NEU_TYPE_STRING;
+            tag_value.value.value.str[0] = 0;
+            utarray_push_back(tag_values, &tag_value);
+            continue;
+        }
+
         if (neu_driver_cache_meta_get(cache, group, tag->name, &value,
                                       tag_value.metas,
                                       NEU_TAG_META_SIZE) != 0) {
@@ -2517,9 +2546,17 @@ static void read_group_paginate(int64_t timestamp, int64_t timeout,
         case NEU_TYPE_UINT64:
             switch (tag->option.value64.endian) {
             case NEU_DATATAG_ENDIAN_B64:
+            case NEU_DATATAG_ENDIAN_BB64:
                 value.value.value.u64 = neu_htonll(value.value.value.u64);
                 break;
+            case NEU_DATATAG_ENDIAN_LB64:
+                value.value.value.u64 = neu_htonlb(value.value.value.u64);
+                break;
+            case NEU_DATATAG_ENDIAN_BL64:
+                value.value.value.u64 = neu_htonbl(value.value.value.u64);
+                break;
             case NEU_DATATAG_ENDIAN_L64:
+            case NEU_DATATAG_ENDIAN_LL64:
             default:
                 break;
             }

src/base/group.c

@@ -315,8 +315,8 @@ UT_array *neu_group_query_read_tag_paginate(neu_group_t *group,
     };
 
     pthread_mutex_lock(&group->mtx);
-    array = filter_tags_by_page(group->tags, is_readable_and_match_query, &q,
-                                current_page, page_size, total_count);
+    array = filter_tags_by_page(group->tags, match_query, &q, current_page,
+                                page_size, total_count);
     pthread_mutex_unlock(&group->mtx);
 
     return array;

src/base/tag.c

@@ -255,21 +255,35 @@ int neu_datatag_parse_addr_option(const neu_datatag_t *      datatag,
     case NEU_TYPE_UINT64: {
         char *op = find_last_character(datatag->address, '#');
 
-        option->value64.endian = NEU_DATATAG_ENDIAN_L64;
+        option->value64.endian     = NEU_DATATAG_ENDIAN_L64;
+        option->value64.is_default = true;
         if (op != NULL) {
-            char e = 0;
-            sscanf(op, "#%c", &e);
+            char e1 = 0;
+            char e2 = 0;
+            int  n  = sscanf(op, "#%c%c", &e1, &e2);
 
-            switch (e) {
-            case 'B':
-                option->value64.endian = NEU_DATATAG_ENDIAN_B64;
-                break;
-            case 'L':
-                option->value64.endian = NEU_DATATAG_ENDIAN_L64;
-                break;
-            default:
-                option->value64.endian = NEU_DATATAG_ENDIAN_L64;
-                break;
+            if (n == 2) {
+                if (e1 == 'B' && e2 == 'B') {
+                    option->value64.endian     = NEU_DATATAG_ENDIAN_BB64;
+                    option->value64.is_default = false;
+                } else if (e1 == 'B' && e2 == 'L') {
+                    option->value64.endian     = NEU_DATATAG_ENDIAN_BL64;
+                    option->value64.is_default = false;
+                } else if (e1 == 'L' && e2 == 'L') {
+                    option->value64.endian     = NEU_DATATAG_ENDIAN_LL64;
+                    option->value64.is_default = false;
+                } else if (e1 == 'L' && e2 == 'B') {
+                    option->value64.endian     = NEU_DATATAG_ENDIAN_LB64;
+                    option->value64.is_default = false;
+                }
+            } else if (n == 1) {
+                if (e1 == 'B') {
+                    option->value64.endian     = NEU_DATATAG_ENDIAN_B64;
+                    option->value64.is_default = false;
+                } else if (e1 == 'L') {
+                    option->value64.endian     = NEU_DATATAG_ENDIAN_L64;
+                    option->value64.is_default = false;
+                }
             }
         }
 

src/connection/connection.c

@@ -99,7 +99,7 @@ neu_conn_t *neu_conn_new(neu_conn_param_t *param, void *data,
     conn->disconnected     = disconnected;
     conn->connected        = connected;
 
-    conn->buf_size = 2048;
+    conn->buf_size = 8192;
     conn->buf      = calloc(conn->buf_size, 1);
     conn->offset   = 0;
     conn->stop     = false;
@@ -407,6 +407,40 @@ ssize_t neu_conn_send(neu_conn_t *conn, uint8_t *buf, ssize_t len)
     return ret;
 }
 
+void neu_conn_clear_recv_buffer(neu_conn_t *conn)
+{
+    if (!conn->is_connected) {
+        return;
+    }
+
+    uint8_t temp_buf[256];
+    ssize_t ret;
+
+    switch (conn->param.type) {
+    case NEU_CONN_TCP_CLIENT:
+        do {
+            ret = recv(conn->fd, temp_buf, sizeof(temp_buf), MSG_DONTWAIT);
+
+            if (ret > 0) {
+                continue;
+            } else if (ret == 0) {
+                zlog_info(conn->param.log,
+                          "Connection closed while clearing buffer.");
+                break;
+            } else if (errno == EAGAIN || errno == EWOULDBLOCK) {
+                break;
+            } else {
+                zlog_error(conn->param.log, "Error clearing buffer: %s",
+                           strerror(errno));
+                break;
+            }
+        } while (ret > 0);
+        break;
+    default:
+        break;
+    }
+}
+
 ssize_t neu_conn_recv(neu_conn_t *conn, uint8_t *buf, ssize_t len)
 {
     ssize_t ret = 0;

src/event/event_linux.c

@@ -66,7 +66,7 @@ struct event_data {
     bool  use;
 };
 
-#define EVENT_SIZE 1400
+#define EVENT_SIZE 2800
 
 struct neu_events {
     int       epoll_fd;

src/parser/neu_json_rw.c

@@ -291,6 +291,53 @@ int neu_json_encode_read_resp1(void *json_object, void *param)
     return ret;
 }
 
+int neu_json_encode_read_resp2(void *json_object, void *param)
+{
+    int                   ret  = 0;
+    neu_json_read_resp_t *resp = (neu_json_read_resp_t *) param;
+
+    void *                    tag_array = neu_json_array();
+    neu_json_read_resp_tag_t *p_tag     = resp->tags;
+    for (int i = 0; i < resp->n_tag; i++) {
+        neu_json_elem_t tag_elems[2 + NEU_TAG_META_SIZE] = { 0 };
+
+        tag_elems[0].name      = "name";
+        tag_elems[0].t         = NEU_JSON_STR;
+        tag_elems[0].v.val_str = p_tag->name;
+
+        if (p_tag->error != 0) {
+            tag_elems[1].name      = "error";
+            tag_elems[1].t         = NEU_JSON_INT;
+            tag_elems[1].v.val_int = p_tag->error;
+        } else {
+            tag_elems[1].name      = "value";
+            tag_elems[1].t         = p_tag->t;
+            tag_elems[1].v         = p_tag->value;
+            tag_elems[1].precision = p_tag->precision;
+        }
+
+        for (int k = 0; k < p_tag->n_meta; k++) {
+            tag_elems[2 + k].name = p_tag->metas[k].name;
+            tag_elems[2 + k].t    = p_tag->metas[k].t;
+            tag_elems[2 + k].v    = p_tag->metas[k].value;
+        }
+
+        tag_array =
+            neu_json_encode_array(tag_array, tag_elems, 2 + p_tag->n_meta);
+        p_tag++;
+    }
+
+    neu_json_elem_t resp_elems[] = { {
+        .name         = "tags",
+        .t            = NEU_JSON_OBJECT,
+        .v.val_object = tag_array,
+    } };
+    ret = neu_json_encode_field(json_object, resp_elems,
+                                NEU_JSON_ELEM_SIZE(resp_elems));
+
+    return ret;
+}
+
 int neu_json_decode_write_req(char *buf, neu_json_write_req_t **result)
 {
     void *json_obj = neu_json_decode_new(buf);

tests/ft/driver/test_modbus.py

@@ -563,10 +563,6 @@ class TestModbus:
         assert 400 == response.status_code
         assert error.NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH == response.json()['error']
 
-        response = api.write_tag(node=param[0], group='group', tag=hold_float[0]['name'], value=1)
-        assert 400 == response.status_code
-        assert error.NEU_ERR_PLUGIN_TAG_TYPE_MISMATCH == response.json()['error']
-
         response = api.write_tags(node=param[0], group='group', tag_values=[
             {"tag": hold_int16[0]['name'], "value": 32768},
             {"tag": hold_uint16[0]['name'], "value": 2},

tests/ft/http_api/test_http_api.py

@@ -348,12 +348,16 @@ class TestHttp:
 
     @description(given="running neuron", when="put drivers with too many groups", then="should fail")
     def test_put_drivers_with_too_many_groups(self):
+
         driver = {
             "name": driver_1["name"],
             "plugin": driver_1["plugin"],
             "params": driver_1["params"],
-            "groups": [{"group": "grp", "interval": 1000, "tags": []} for _ in range(1000)]
+            "groups": []
         }
+        for i in range(1025):
+            driver["groups"].append({"group": "grp" + str(i), "interval": 1000, "tags": []})
+
         response = api.put_drivers([driver])
         assert 400 == response.status_code
         assert error.NEU_ERR_GROUP_MAX_GROUPS == response.json()['error']

version

@@ -1 +1 @@
-2.9.3
+2.9.5