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#!/usr/bin/env python

"""
@author: Vladan S
@copyright: D-Logic   http://www.d-logic.net/nfc-rfid-reader-sdk/
 
"""
__program_version = '4.0.5.4'


'''
- display dirs list if not login.html exists'
'''
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import cgi
import os
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import requests
import shutil
import signal
import sys
import threading
import time
import urllib2
import urllib



from BaseHTTPServer import BaseHTTPRequestHandler
from BaseHTTPServer import HTTPServer
from ctypes import *
from platform import platform
from socket import *
from urlparse import parse_qs
from urlparse import urlparse
from mimetypes import types_map

import traceback

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from StringIO import StringIO

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from constants import *
from shell.ais_shell import *

global edit_time

def AisHttpGetProgramVersion():
    return 'App name  : {0}  : {1}' . format(AIS_HTTP, __program_version)


def http_request(path, post_attrib, time_out=20):
    try:
        req = urllib2.Request(path, post_attrib)
        req.add_header("Content-type", "application/x-www-form-urlencoded")               
        page = urllib2.urlopen(req, timeout=time_out)
        return page.read(), page.code
    except urllib2.URLError, urlExc:
        return '', urlExc.reason
    except urllib2.HTTPError, httpExc:
        return '', httpExc.code
      
                    
class GetHandler(BaseHTTPRequestHandler):
    global url_query

    def WriteFile(self, path):
        '''Write any file to client
           @param path: self.path-> path to the file 
        '''        
        if self.path == '/':
            self.path = path
        fname, ext = os.path.splitext(self.path)        
        fname = self.path.lstrip("/")
        with open(os.path.join(os.curdir, fname)) as t: 
            self.send_response(200) 
            self.send_header('Content-type', types_map[ext]) 
            self.end_headers() 
            self.wfile.write(t.read()) 
            t.close()
        return
    
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    def list_dir(self,path):
        try:
            listdirs = os.listdir(path)
        except os.error:
            self.send_error(404)
            return None        
        f = StringIO()                
        f.write('<!DOCTYPE html>')
        f.write("<html>\n<title>Directory listing</title>\n")
        f.write("<body>\n<h2>Directory listing for {0}</h2>\n" .format(path))
        f.write("<hr>\n<ul>\n")                           
        for name in listdirs:            
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            fullname = os.path.join(path, name)
            displayname = linkname = name           
            if os.path.isdir(fullname):
                displayname = name + "/"
                linkname = name + "/"                             
            if os.path.islink(fullname):
                displayname = name + "@"
            f.write('<li><a href="%s">%s</a>\n'% (urllib.quote(linkname), cgi.escape(displayname)))                                                     
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        f.write("</ul>\n<hr>\n</body>\n</html>\n") 
        length = f.tell()
        f.seek(0)                       
        self.send_response(200)
        encoding = sys.getfilesystemencoding()
        self.send_header("Content-type", "text/html; charset=%s" % encoding)
        self.send_header("Content-Length", str(length))        
        self.end_headers()               
        return f
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    def do_HEAD(self):
        f = self.send_head()
        if f:            
            f.close()
    
    
    def translate_path(self, path):
        """Translate a /-separated PATH to the local filename syntax.
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           :param path:current path to translate path
           :return: translated path
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        path = path.split('?',1)[0]
        path = path.split('#',1)[0]            
        path = posixpath.normpath(urllib.unquote(path))
        words = path.split('/')
        words = filter(None, words)
        path = os.getcwd()
        for word in words:
            drive, word = os.path.splitdrive(word)
            head, word = os.path.split(word)
            if word in (os.curdir, os.pardir): continue
            path = os.path.join(path, word)
        return path
                              
    def send_head(self):
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        try:                        
            path = self.translate_path(self.path)
            f = None             
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            if os.path.isdir(path):                      
                for index in HTML_INIT_SCRIPT, HTM_INIT_SCRIPT:
                    index = os.path.join(os.path.join(os.getcwd(), HTML_FOLDER, index)) 
                    if os.path.exists(index):
                        path = index
                        break
                else:             
                    return self.list_dir(path)
            try:
                f = open(path, 'rb')
            except IOError:
                self.send_error(404, 'File Not Found: %s' % self.path)
                return None
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            fname, ext = os.path.splitext(path)
            self.send_response(200)
            self.send_header("Content-type", types_map[ext])
            fs = os.fstat(f.fileno())
            self.send_header("Content-Length", str(fs[6]))
            self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))
            self.end_headers()                    
            return f
        except IOError:
            self.send_error(404, 'File Not Found: %s' % self.path)
       
    def do_GET(self):
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        try:                                                                          
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            if f:                                                                    
                shutil.copyfileobj(f, self.wfile)                        
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        except IOError:
            self.send_error(404, 'File Not Found: %s' % self.path)
        return    
    
    def do_POST(self):
        try:    
            global url_query, edit_list_choise
            dev = DEV_HND       
            ctype, pdict = cgi.parse_header(self.headers['content-type'])
            if ctype == 'multipart/form-data':
                pq = cgi.parse_multipart(self.rfile, pdict)
            elif ctype == 'application/x-www-form-urlencoded':
                length = int(self.headers['content-length'])
                pq = cgi.parse_qs(self.rfile.read(length), keep_blank_values=1)
            else:
                pq = {}
                        
                 
            f = ''.join(pq[FUNCTION] if pq.has_key(FUNCTION) else '')                       
            device = ''.join(pq[DEVICE] if pq.has_key(DEVICE) else '')
           
                                                                                                                                    
            if pq.has_key(DEVICE_TYPE):
                device_type = ''.join(pq[DEVICE_TYPE])

            if pq.has_key(DEVICE_ID):
                device_id = ''.join(pq[DEVICE_ID])

            if pq.has_key(EDIT_LIST):
                edit_list_choise = ''.join(pq[EDIT_LIST])

                            
            if f == 'Q':                                
                if edit_list_choise == AVAILABLE_DEVICES :
                    self.wfile.write(edit_device_list(1))
                elif edit_list_choise == ACTUAL_LIST:                    
                    self.wfile.write(edit_device_list(2))
                elif edit_list_choise == CLEAR_LIST:
                    self.wfile.write(edit_device_list(3))
                elif edit_list_choise == ADD_DEVICE:
                    self.wfile.write("AIS_List_AddDevicesForCheck() ...\n")
                    if device_type == '' or device_id == '':
                        self.wfile.write("You must enter values in the relevant fields !")
                        return
                    else:                        
                        self.wfile.write(edit_device_list(4,"AIS_List_AddDeviceForCheck",int(device_type),int(device_id)))
                elif edit_list_choise == ERASE_DEVICE:
                    self.wfile.write("AIS_List_EraseDeviceForCheck()...\n")
                    self.wfile.write(edit_device_list(5,"AIS_List_EraseDeviceForCheck",int(device_type),int(device_id)))
                else:
                    self.wfile.write("") 
                                  
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            if pq.has_key(START_INDEX) or pq.has_key(END_INDEX):
               start_index = (''.join(pq[START_INDEX]))
               end_index   = (''.join(pq[END_INDEX]))
              
            
            if pq.has_key(START_TIME)or pq.has_key(END_TIME):
               start_time = (''.join(pq[START_TIME]))        
               end_time   = (''.join(pq[END_TIME]))
             
               
            if pq.has_key(WHITE_LIST_WRITE):            
                white_list_write = ''.join(pq[WHITE_LIST_WRITE])
               
            
            if pq.has_key(BLACK_LIST_WRITE):
                black_list_write = ''.join(pq[BLACK_LIST_WRITE])  
            
            if pq.has_key(DEFAULT_APP_PASS):
                set_def_pass = ''.join(pq[DEFAULT_APP_PASS])
                
            if pq.has_key(NEW_PASS):
                new_pass  = ''.join(pq[NEW_PASS])
                       
            if pq.has_key(UNREAD_LOG):                 
                get_unread_log = (''.join(pq[UNREAD_LOG]))
            
            if pq.has_key(LIGHTS):
                lights_choise = ''.join(pq[LIGHTS])  

           
            
            if f == 'q':                                          
                self.wfile.write(GetListInformation())
                
            
            if f == 'v':            
                self.wfile.write("AIS_GetDLLVersion() >> %s\n" % AISGetLibraryVersionStr())
            
            
            if f in ('x','X'):
                self.wfile.write("\nServer stopped !\nClose program !\n")            
                shut_event.set()                                            
                if sys.platform.startswith('linux'):
                    os.system('pkill -9 python')
                    os.kill(os.getpid(), signal.SIGINT)
                elif sys.platform.startswith('win'):                    
                    os._exit(0)   
            
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    #==========================================================================            
           
            if f == 'o':                            
                pass                
                self.wfile.write(AISOpen())                
                    
            elif f == 'c':
                self.wfile.write(AISClose())
            
            if f == 'd':
                res, count= AISUpdateAndGetCount()                
                self.wfile.write(' COUNT >> {0} {1}'.format(count, wr_status('', res)))
                                      
        
            elif f == 't': 
                self.wfile.write(active_device()) 
                self.wfile.write(AISGetTime())       
            
            elif f == 'T':             
                self.wfile.write(sys_get_timezone_info()+ "\n")               
                self.wfile.write(AISSetTime())
            
            elif f == 'r':
                pass
                rt = ''.join(pq[RTE])                                
                if rt.strip() == '':
                    self.wfile.write('Must enter value for seconds !')
                    return
                else:
                    try:                   
                        seconds = int(rt)
                        stop_time = c_uint64()
                        stop_time = time.time() + seconds #10
                        dev = DEV_HND
                        self.wfile.write("Wait for RTE for %d sec ...\n" % seconds)       
                        while (time.ctime(time.time()) < time.ctime(stop_time)) :
                            for hnd in HND_LIST:
                                dev.hnd = hnd            
                                r, rte = MainLoop()
                                if rte != None:                                                       
                                    self.wfile.write(rte)
                            time.sleep(THD_SLEEP)     
                        self.wfile.write ("End RTE listen") 
                    except Exception as vError:
                        self.wfile.write(vError)
                        return   
                
                  
            elif f == 'l':                         
                self.wfile.write(log_get(dev.hnd))
                
           
            elif f == 'n':                                                          
                self.wfile.write(log_by_index(int(start_index), int(end_index), dev.hnd))               
               
                
            elif f == 'N':                                                       
                self.wfile.write(log_by_time(int(start_time), int(end_time), dev.hnd))  
                
                
            elif f == 'u':                
                get_unread_log = int(get_unread_log)                                
                self.wfile.write(get_unread_log_one(get_unread_log))
                                      
            elif f == 'w':               
                self.wfile.write(whitelist_read())
                                
            elif f == 'b':                
                self.wfile.write(blacklist_read())

            elif f == 'W':                                    
                self.wfile.write(whitelist_write(white_list_write))                                  

            elif f == 'B':                                                
                self.wfile.write(blacklist_write(black_list_write))                                 

            elif f == 'L':                          
                self.wfile.write(TestLights(lights_choise))
                
            elif f == 'g':               
                self.wfile.write(get_io_state())
            elif f == 'G':               
                self.wfile.write(lock_open())
            elif f == 'y':               
                self.wfile.write(relay_toogle())
          
            elif f == 'P':
                global PASS
                self.wfile.write("Actual application password is :%s\n" % PASS)
                if  len(set_def_pass) == 0:
                    self.wfile.write("Patch - new pass = default pass\n")
                    set_def_pass = PASS
                PASS = set_def_pass                    
                self.wfile.write(password_set_default(set_def_pass)) 
                
            elif f == 'p':
                global PASS
                self.wfile.write("Old password is actual application password: %s\n" % PASS)           
                self.wfile.write("New password for units ( and application ): %s\n" % new_pass)
                if  len(new_pass) == 0:
                    self.wfile.write ("Patch - new pass = default pass\n")
                    new_pass = PASS 
                self.wfile.write("Try set new password for units= %s\n" % (new_pass))
                self.wfile.write(password_change(new_pass))                       

                      
            elif f == 'f':               
                self.wfile.write(AISGetVersion())
            
            elif f == 'i':              
                self.wfile.write(AISGetVersion())
                self.wfile.write(AISGetTime())
                self.wfile.write(sys_get_timezone_info() + "\n")
                                                                 
            elif f == 'E':
                self.wfile.write(ee_lock())
            
            elif f == 'e':
                self.wfile.write(ee_unlock())
           
            elif f == 'F':              
                try:
                    if pq[BIN_FIRMWARE_NAME] != None:
                        firmw_name = ''.join(pq[BIN_FIRMWARE_NAME])
                        fwFile = ''.join(pq[BIN_FNAME])                                                                  
                        with open(firmw_name, 'wb') as out:
                            out.write(fwFile)                             
                        self.wfile.write(fw_update(fw_name=firmw_name))               
                    else:
                        self.wfile.write('NO FILE')
                except Exception as exc:
                    self.wfile.write("ERROR: %s" % exc)
                
            elif f == 's':
                try:
                    if pq[CONFIG_FILE_READ] != None:
                        conf_file_rd = ''.join(pq[CONFIG_FILE_READ])
                        self.wfile.write(config_file_rd(fname=conf_file_rd))
                        
                        from socket import gethostname, gethostbyname 
                        ip = gethostbyname(gethostname())
                         
                        with open(conf_file_rd + '.config' , 'wb') as out:                   
                            http_request(ip + ":" + str(HTTP_SERVER_PORT), out.write(conf_file_rd + '.config'))                
                except Exception as exc:
                    self.wfile.write("ERROR: %s" % exc)
                
                
            elif f == 'S':               
                try:
                    if pq[CONFIG_FILE_WR_NAME] != None:
                        confFileNameWR = ''.join(pq[CONFIG_FILE_WR_NAME])
                        confFileWR = ''.join(pq[CONFIG_FILE_WRITE])                                                     
                        with open(confFileNameWR, 'wb') as out:
                            out.write(confFileWR)                                                                                                                   
                        self.wfile.write(config_file_wr(fname=confFileNameWR))                         
                    else:
                        self.wfile.write('NO FILE')
                except Exception as exc:
                    self.wfile.write("ERROR: %s" % exc) 
                    
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            if GetBaseName() == AIS_MAIN or GetBaseName() == AIS_MAIN_EXE:                
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                try:
                    from ais_readers_main_process import DoPOST                                                                              
                    writefile, content = DoPOST(f, **pq)                
                    if writefile:
                        return self.WriteFile(content)
                    else:
                        return self.wfile.write(content)
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                except Exception as exc:
                    self.wfile.write(exc)
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            if len(HND_LIST) == 0:
                self.wfile.write("\nNO DEVICES FOUND (or resource busy) \n " )
            return
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            if not device.isdigit():                 
                dev.hnd = HND_LIST[0]
            elif int(device) > len(HND_LIST) or int(device) == 0:
                self.wfile.write("dev[%s]NO DEVICE FOUND (or resource busy)" % device)
                return
            else:
                dev.hnd = HND_LIST[int(device) -1] 
                        
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            return
                                
        except Exception as error_mess:                                         
#             self.wfile.write(error_mess.message)
            traceback.print_exc()                               
           


        
def RunAll():   
    serv = threading.Thread(target=handler_server)   
    serv.start()       
    while True:
        try:                  
            if serv.isAlive():            
                serv.join(timeout = SERV_JOIN)                             
        except (KeyboardInterrupt, SystemExit, Exception) as e:
            httpd.server_close()
            print '\nServer stopped\nProgram close',e
            shut_event.set()
            if sys.platform.startswith('linux'):
                os.system('pkill -9 python')
            elif sys.platform.startswith('win'):            
                sys.exit(0)            
            break
            

def handler_server():
    global httpd
    while not shut_event.is_set():        
        my_lock.acquire()                                                         
        httpd.handle_request()
        my_lock.release()
        time.sleep(THD_SLEEP)

def init():   
    print AISGetLibraryVersionStr() 
    global httpd   
    #dev_list() 
    list_device()    
    httpd = HTTPServer((HTTP_SERVER_NAME,HTTP_SERVER_PORT),GetHandler) 
    httpd.socket.setsockopt(SOL_SOCKET,SO_REUSEADDR,1) 
    RunAll() 



my_lock = threading.Lock()
shut_event = threading.Event()

if __name__ == '__main__': 
    global httpd     
    init()