Implementing --proxy-freq (Issue #4496)

lib/core/option.py

@@ -2714,6 +2714,10 @@ def _basicOptionValidation():
         errMsg = "switch '--proxy' is incompatible with option '--proxy-file'"
         raise SqlmapSyntaxException(errMsg)
 
+    if conf.proxyFreq and not conf.proxyFile:
+        errMsg = "option '--proxy-freq' requires usage of option '--proxy-file'"
+        raise SqlmapSyntaxException(errMsg)
+
     if conf.checkTor and not any((conf.tor, conf.proxy)):
         errMsg = "switch '--check-tor' requires usage of switch '--tor' (or option '--proxy' with HTTP proxy address of Tor service)"
         raise SqlmapSyntaxException(errMsg)

lib/core/optiondict.py

@@ -46,6 +46,7 @@ optDict = {
         "proxy": "string",
         "proxyCred": "string",
         "proxyFile": "string",
+        "proxyFreq": "integer",
         "tor": "boolean",
         "torPort": "integer",
         "torType": "string",

lib/core/settings.py

@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.4.12.36"
+VERSION = "1.4.12.37"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)

lib/parse/cmdline.py

@@ -222,6 +222,9 @@ def cmdLineParser(argv=None):
         request.add_argument("--proxy-file", dest="proxyFile",
             help="Load proxy list from a file")
 
+        request.add_argument("--proxy-freq", dest="proxyFreq", type=int,
+            help="Requests between change of proxy from a given list")
+
         request.add_argument("--tor", dest="tor", action="store_true",
             help="Use Tor anonymity network")
 

lib/request/connect.py

@@ -285,6 +285,15 @@ class Connect(object):
             kb.requestCounter += 1
             threadData.lastRequestUID = kb.requestCounter
 
+            if conf.proxyFreq:
+                if kb.requestCounter % conf.proxyFreq == 1:
+                    conf.proxy = None
+
+                    warnMsg = "changing proxy"
+                    logger.warn(warnMsg)
+
+                    setHTTPHandlers()
+
         if conf.dummy or conf.murphyRate and randomInt() % conf.murphyRate == 0:
             if conf.murphyRate:
                 time.sleep(randomInt() % (MAX_MURPHY_SLEEP_TIME + 1))