Another patch for Issue #1659

Author: stamparm

lib/core/dump.py

@@ -432,13 +432,21 @@ def dbTableValues(self, tableValues):
 
                             dumpDbPath = tempDir
 
-            _ = re.sub(r"[^\w]", "_", normalizeUnicode(unsafeSQLIdentificatorNaming(table)))
-            if len(_) < len(table) or IS_WIN and table.upper() in WINDOWS_RESERVED_NAMES:
-                _ = unicodeencode(re.sub(r"[^\w]", "_", unsafeSQLIdentificatorNaming(table)))
-                dumpFileName = os.path.join(dumpDbPath, "%s-%s.%s" % (_, hashlib.md5(unicodeencode(table)).hexdigest()[:8], conf.dumpFormat.lower()))
-                warnFile = True
-            else:
-                dumpFileName = os.path.join(dumpDbPath, "%s.%s" % (_, conf.dumpFormat.lower()))
+            dumpFileName = os.path.join(dumpDbPath, "%s.%s" % (unsafeSQLIdentificatorNaming(table), conf.dumpFormat.lower()))
+            if not os.path.isfile(dumpFileName):
+                try:
+                    openFile(dumpFileName, "w+b").close()
+                except SqlmapSystemException:
+                    raise
+                except:
+                    warnFile = True
+
+                    _ = re.sub(r"[^\w]", "_", normalizeUnicode(unsafeSQLIdentificatorNaming(table)))
+                    if len(_) < len(table) or IS_WIN and table.upper() in WINDOWS_RESERVED_NAMES:
+                        _ = unicodeencode(re.sub(r"[^\w]", "_", unsafeSQLIdentificatorNaming(table)))
+                        dumpFileName = os.path.join(dumpDbPath, "%s-%s.%s" % (_, hashlib.md5(unicodeencode(table)).hexdigest()[:8], conf.dumpFormat.lower()))
+                    else:
+                        dumpFileName = os.path.join(dumpDbPath, "%s.%s" % (_, conf.dumpFormat.lower()))
 
             appendToFile = os.path.isfile(dumpFileName) and any((conf.limitStart, conf.limitStop))
             dumpFP = openFile(dumpFileName, "wb" if not appendToFile else "ab")