Fix #127, Adds static analysis comments and replaces strncpy with snp…

…rintf

This commit addresses issues flagged during static analysis by:
- Adding JSC 2.1 disposition comments.
- Replacing strncpy with snprintf to enhance safety and compliance.
- Changes DS_TABLE_VERIFY_ERR from 0xFFFFFFFF to -1

fsw/src/ds_app.c

@@ -358,8 +358,7 @@ void DS_AppSendHkCmd(void)
         Status = CFE_TBL_GetInfo(&FilterTblInfo, FilterTblName);
         if (Status == CFE_SUCCESS)
         {
-            strncpy(PayloadPtr->FilterTblFilename, FilterTblInfo.LastFileLoaded, OS_MAX_PATH_LEN - 1);
-            PayloadPtr->FilterTblFilename[OS_MAX_PATH_LEN - 1] = '\0';
+            snprintf(PayloadPtr->FilterTblFilename, OS_MAX_PATH_LEN, "%s", FilterTblInfo.LastFileLoaded);
         }
         else
         {

fsw/src/ds_appdefs.h

@@ -43,7 +43,7 @@
 
 #define DS_PATH_SEPARATOR '/' /**< \brief File system path separator */
 
-#define DS_TABLE_VERIFY_ERR 0xFFFFFFFF /**< \brief Table verification error return value */
+#define DS_TABLE_VERIFY_ERR -1 /**< \brief Table verification error return value */
 
 #define DS_FILE_HEADER_NONE 0 /**< \brief File header type is NONE */
 #define DS_FILE_HEADER_CFE  1 /**< \brief File header type is CFE */

fsw/src/ds_cmds.c

@@ -1096,7 +1096,7 @@ void DS_GetFileInfoCmd(const CFE_SB_Buffer_t *BufPtr)
             /*
             ** Set current open filename...
             */
-            strncpy(FileInfoPtr->FileName, DS_AppData.FileStatus[i].FileName, sizeof(FileInfoPtr->FileName));
+            snprintf(FileInfoPtr->FileName, sizeof(FileInfoPtr->FileName), "%s", DS_AppData.FileStatus[i].FileName);
         }
     }
 

fsw/src/ds_file.c

@@ -881,7 +881,7 @@ void DS_FileCloseDest(int32 FileIndex)
             }
 
             /* Update the path name for reporting */
-            strncpy(FileStatus->FileName, PathName, sizeof(FileStatus->FileName));
+            snprintf(FileStatus->FileName, sizeof(FileStatus->FileName), "%s", PathName);
         }
     }
 
@@ -991,7 +991,7 @@ void DS_FileTransmit(DS_AppFileStatus_t *FileStatus)
         /*
         ** Set current open filename...
         */
-        strncpy(FileInfo->FileName, FileStatus->FileName, sizeof(FileInfo->FileName));
+        snprintf(FileInfo->FileName, sizeof(FileInfo->FileName), "%s", FileStatus->FileName);
 
         /*
         ** Timestamp and send file info telemetry...

fsw/src/ds_table.c

@@ -421,6 +421,7 @@ CFE_Status_t DS_TableVerifyDestFile(const void *TableData)
         else
         {
             CountBad++;
+            /* SAD: Assignment of 0xFFFFFFFF to Result is safe; it represents -1 in int32, within valid range */
             Result = DS_TABLE_VERIFY_ERR;
         }
     }
@@ -543,6 +544,7 @@ CFE_Status_t DS_TableVerifyFilter(const void *TableData)
         else
         {
             CountBad++;
+            /* SAD: Assignment of 0xFFFFFFFF to Result is safe; it represents -1 in int32, within valid range */
             Result = DS_TABLE_VERIFY_ERR;
         }
     }