use one macro to define password length.

src/inc/taosdef.h

@@ -88,6 +88,8 @@ extern const int32_t TYPE_BYTES[15];
 #define TSDB_DEFAULT_PASS               "taosdata"
 #endif
 
+#define SHELL_MAX_PASSWORD_LEN          20
+
 #define TSDB_TRUE   1
 #define TSDB_FALSE  0
 #define TSDB_OK     0

src/kit/shell/inc/shell.h

@@ -25,7 +25,6 @@
 #define MAX_USERNAME_SIZE      64
 #define MAX_DBNAME_SIZE        64
 #define MAX_IP_SIZE            20
-#define MAX_PASSWORD_SIZE      20
 #define MAX_HISTORY_SIZE       1000
 #define MAX_COMMAND_SIZE       1048586
 #define HISTORY_FILE           ".taos_history"

src/kit/shell/src/shellDarwin.c

@@ -66,7 +66,7 @@ void printHelp() {
 
 char      DARWINCLIENT_VERSION[] = "Welcome to the TDengine shell from %s, Client Version:%s\n"
                              "Copyright (c) 2020 by TAOS Data, Inc. All rights reserved.\n\n";
-char g_password[MAX_PASSWORD_SIZE];
+char g_password[SHELL_MAX_PASSWORD_LEN];
 
 void shellParseArgument(int argc, char *argv[], SShellArguments *arguments) {
   wordexp_t full_path;
@@ -91,7 +91,7 @@ void shellParseArgument(int argc, char *argv[], SShellArguments *arguments) {
             }
             getchar();
         } else {
-            tstrncpy(g_password, (char *)(argv[i] + 2), MAX_PASSWORD_SIZE);
+            tstrncpy(g_password, (char *)(argv[i] + 2), SHELL_MAX_PASSWORD_LEN);
         }
         arguments->password = g_password;
     }

src/kit/shell/src/shellLinux.c

@@ -173,7 +173,7 @@ static struct argp argp = {options, parse_opt, args_doc, doc};
 
 char      LINUXCLIENT_VERSION[] = "Welcome to the TDengine shell from %s, Client Version:%s\n"
                              "Copyright (c) 2020 by TAOS Data, Inc. All rights reserved.\n\n";
-char g_password[MAX_PASSWORD_SIZE];
+char g_password[SHELL_MAX_PASSWORD_LEN];
 
 static void parse_password(
         int argc, char *argv[], SShellArguments *arguments) {
@@ -188,7 +188,7 @@ static void parse_password(
                 }
                 getchar();
             } else {
-                tstrncpy(g_password, (char *)(argv[i] + 2), MAX_PASSWORD_SIZE);
+                tstrncpy(g_password, (char *)(argv[i] + 2), SHELL_MAX_PASSWORD_LEN);
             }
             arguments->password = g_password;
             arguments->is_use_passwd = true;

src/kit/shell/src/shellWindows.c

@@ -68,7 +68,7 @@ void printHelp() {
   exit(EXIT_SUCCESS);
 }
 
-char g_password[MAX_PASSWORD_SIZE];
+char g_password[SHELL_MAX_PASSWORD_LEN];
 
 void shellParseArgument(int argc, char *argv[], SShellArguments *arguments) {
   for (int i = 1; i < argc; i++) {
@@ -93,7 +93,7 @@ void shellParseArgument(int argc, char *argv[], SShellArguments *arguments) {
             }
             getchar();
         } else {
-            tstrncpy(g_password, (char *)(argv[i] + 2), MAX_PASSWORD_SIZE);
+            tstrncpy(g_password, (char *)(argv[i] + 2), SHELL_MAX_PASSWORD_LEN);
         }
         arguments->password = g_password;
     }

src/kit/taosdemo/taosdemo.c

@@ -77,7 +77,6 @@ extern char configDir[];
 #define COL_BUFFER_LEN      ((TSDB_COL_NAME_LEN + 15) * TSDB_MAX_COLUMNS)
 
 #define MAX_USERNAME_SIZE  64
-#define MAX_PASSWORD_SIZE  20
 #define MAX_HOSTNAME_SIZE  253      // https://man7.org/linux/man-pages/man7/hostname.7.html
 #define MAX_TB_NAME_SIZE   64
 #define MAX_DATA_SIZE      (16*TSDB_MAX_COLUMNS)+20     // max record len: 16*MAX_COLUMNS, timestamp string and ,('') need extra space
@@ -216,7 +215,7 @@ typedef struct SArguments_S {
     uint16_t port;
     uint16_t iface;
     char *   user;
-    char     password[MAX_PASSWORD_SIZE];
+    char     password[SHELL_MAX_PASSWORD_LEN];
     char *   database;
     int      replica;
     char *   tb_prefix;
@@ -366,7 +365,7 @@ typedef struct SDbs_S {
 
     uint16_t    port;
     char        user[MAX_USERNAME_SIZE];
-    char        password[MAX_PASSWORD_SIZE];
+    char        password[SHELL_MAX_PASSWORD_LEN];
     char        resultFile[MAX_FILE_NAME_LEN];
     bool        use_metric;
     bool        insert_only;
@@ -432,7 +431,7 @@ typedef struct SQueryMetaInfo_S {
     uint16_t     port;
     struct       sockaddr_in serv_addr;
     char         user[MAX_USERNAME_SIZE];
-    char         password[MAX_PASSWORD_SIZE];
+    char         password[SHELL_MAX_PASSWORD_LEN];
     char         dbName[TSDB_DB_NAME_LEN];
     char         queryMode[SMALL_BUFF_LEN];  // taosc, rest
 
@@ -873,7 +872,7 @@ static void parse_args(int argc, char *argv[], SArguments *arguments) {
                 }
                 taosSetConsoleEcho(true);
             } else {
-                tstrncpy(arguments->password, (char *)(argv[i] + 2), MAX_PASSWORD_SIZE);
+                tstrncpy(arguments->password, (char *)(argv[i] + 2), SHELL_MAX_PASSWORD_LEN);
             }
         } else if (strcmp(argv[i], "-o") == 0) {
             if (argc == i+1) {
@@ -3805,9 +3804,9 @@ static bool getMetaFromInsertJsonFile(cJSON* root) {
 
     cJSON* password = cJSON_GetObjectItem(root, "password");
     if (password && password->type == cJSON_String && password->valuestring != NULL) {
-        tstrncpy(g_Dbs.password, password->valuestring, MAX_PASSWORD_SIZE);
+        tstrncpy(g_Dbs.password, password->valuestring, SHELL_MAX_PASSWORD_LEN);
     } else if (!password) {
-        tstrncpy(g_Dbs.password, "taosdata", MAX_PASSWORD_SIZE);
+        tstrncpy(g_Dbs.password, "taosdata", SHELL_MAX_PASSWORD_LEN);
     }
 
     cJSON* resultfile = cJSON_GetObjectItem(root, "result_file");
@@ -4543,9 +4542,9 @@ static bool getMetaFromQueryJsonFile(cJSON* root) {
 
     cJSON* password = cJSON_GetObjectItem(root, "password");
     if (password && password->type == cJSON_String && password->valuestring != NULL) {
-        tstrncpy(g_queryInfo.password, password->valuestring, MAX_PASSWORD_SIZE);
+        tstrncpy(g_queryInfo.password, password->valuestring, SHELL_MAX_PASSWORD_LEN);
     } else if (!password) {
-        tstrncpy(g_queryInfo.password, "taosdata", MAX_PASSWORD_SIZE);;
+        tstrncpy(g_queryInfo.password, "taosdata", SHELL_MAX_PASSWORD_LEN);;
     }
 
     cJSON *answerPrompt = cJSON_GetObjectItem(root, "confirm_parameter_prompt"); // yes, no,
@@ -8887,7 +8886,7 @@ static void initOfInsertMeta() {
     tstrncpy(g_Dbs.host, "127.0.0.1", MAX_HOSTNAME_SIZE);
     g_Dbs.port = 6030;
     tstrncpy(g_Dbs.user, TSDB_DEFAULT_USER, MAX_USERNAME_SIZE);
-    tstrncpy(g_Dbs.password, TSDB_DEFAULT_PASS, MAX_PASSWORD_SIZE);
+    tstrncpy(g_Dbs.password, TSDB_DEFAULT_PASS, SHELL_MAX_PASSWORD_LEN);
     g_Dbs.threadCount = 2;
 
     g_Dbs.use_metric = g_args.use_metric;
@@ -8900,7 +8899,7 @@ static void initOfQueryMeta() {
     tstrncpy(g_queryInfo.host, "127.0.0.1", MAX_HOSTNAME_SIZE);
     g_queryInfo.port = 6030;
     tstrncpy(g_queryInfo.user, TSDB_DEFAULT_USER, MAX_USERNAME_SIZE);
-    tstrncpy(g_queryInfo.password, TSDB_DEFAULT_PASS, MAX_PASSWORD_SIZE);
+    tstrncpy(g_queryInfo.password, TSDB_DEFAULT_PASS, SHELL_MAX_PASSWORD_LEN);
 }
 
 static void setParaFromArg() {
@@ -8914,7 +8913,7 @@ static void setParaFromArg() {
         tstrncpy(g_Dbs.user, g_args.user, MAX_USERNAME_SIZE);
     }
 
-    tstrncpy(g_Dbs.password, g_args.password, MAX_PASSWORD_SIZE);
+    tstrncpy(g_Dbs.password, g_args.password, SHELL_MAX_PASSWORD_LEN);
 
     if (g_args.port) {
         g_Dbs.port = g_args.port;

src/kit/taosdump/taosdump.c

@@ -248,14 +248,12 @@ static struct argp_option options[] = {
     {0}
 };
 
-#define MAX_PASSWORD_SIZE   20
-
 /* Used by main to communicate with parse_opt. */
 typedef struct arguments {
     // connection option
     char    *host;
     char    *user;
-    char    password[MAX_PASSWORD_SIZE];
+    char    password[SHELL_MAX_PASSWORD_LEN];
     uint16_t port;
     char     cversion[12];
     uint16_t mysqlFlag;
@@ -567,7 +565,8 @@ static void parse_password(
                 }
                 taosSetConsoleEcho(true);
             } else {
-                tstrncpy(arguments->password, (char *)(argv[i] + 2), MAX_PASSWORD_SIZE);
+                tstrncpy(arguments->password, (char *)(argv[i] + 2),
+                        SHELL_MAX_PASSWORD_LEN);
             }
             argv[i] = "";
         }