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netfpga.py
executable file
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netfpga.py
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#!/usr/bin/env python
#netfpga.py - A simple web.py application allow remote debugging on Altera FPGA
#Project NetFPGA created by Shengye Wang, Fudan University 01/25/2013
#Inspired by Prof. Michael Taylor, UC San Diego
#See http://shengye.me for more information
#This file may be used or modified with no restriction.
#Raw copies as well as modified copies may be distributed without limitation.
import web
import time
import random
import socket
import os
render = web.template.render('templates')
#Change the following lines to meet actual
MAX_PER_TIME = 60.0 #max protection time
filedir = '/home/shengye/netfpga/upload_files' # change this to the directory you want to store the file in.
HOST = 'localhost'
PORT = 1337 #modify with the port number in tcl script
CMD_LEN = 47 #length of string send to jtag server
NUM_LEN = 34 #length data field
session_time = time.time()
session_id = '000000000'
status = "IDLE" #global variable holding current status.
def get_status(): #update and return status
global status
global session_time
past_time = time.time() - session_time
if (past_time < 0 or past_time > MAX_PER_TIME) and (status == "PROTECTED"):
status = "UNPROTECTED"
return status
def set_status(new_status): #set status
global status
global session_id
status = new_status
if (status == "IDLE"):
session_id = '000000000'
def check_sid(sid): #check if client is the current user
global session_id
return sid == session_id
def conn(): #connect to TCP server
global sock
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((HOST, PORT))
except socket.error, msg:
return ("[ERROR] %s\n" % msg[1])
def send_recv(buf): #send data to jtag server and get the response
global sock
#Send
bcnt = sock.send(buf+'\n')
#print "Send is " + buf + " len = " + str(bcnt)
#Receive
buf = sock.recv(1024)
#print "Recv is " + buf + " len = " + str(len(buf))
return buf
def num_to_str(num, leng = NUM_LEN): #convert integer to binary stored in string(reversed)
rtn = ''
for i in range(leng):
rtn = str(1 if (num & (1 << i)) > 0 else 0) + rtn
rtn = rtn[::-1] #Revert return value
return rtn
def str_to_num(s, signext = False): #convert binary stored in string(reversed) to integer
s = s[::-1] #Revert s
rtn = 0
if (s[0] == '1' and signext):
for i in range(len(s)):
rtn += 2**(len(s) - 1 - i) if (s[i] == '0') else 0
rtn += 1
rtn = -rtn
else:
for i in range(len(s)):
rtn += 2**(len(s) - 1 - i) if (s[i] == '1') else 0
return rtn
urls = (
'/', 'index',
'/new', 'New',
'/giveup', 'GiveUp',
'/upload', 'Upload',
'/program', 'Program',
'/startserver', 'StartServer',
'/inittarget', 'InitTarget',
'/interaction', 'Interaction',
'/nav', 'Nav'
)
class index:
def GET(self):
global session_time
global MAX_PER_TIME
web.header("Content-Type","text/html; charset=utf-8")
page = "Status is " + get_status()
return render.index(get_status(), check_sid(web.cookies().get('sid')), "%.1f" % (time.time() - session_time), "%.1f" % (MAX_PER_TIME))
class New:
def GET(self):
global session_time
global session_id
web.header("Content-Type","text/html; charset=utf-8")
content = ""
showNavBar = False #Should show the navigation bar
if (get_status() == "PROTECTED"):
if check_sid(web.cookies().get('sid')):
content += "Serving current user. Please give up before creating new session.\n"
showNavBar = True
else:
content += "Serving other user in protected period.\nACCESS DENIED.\n"
else:
content += "Killing background utilities.\n"
content += os.popen("./stopall.sh").read()
content += "Genearting new session ID.\n"
session_time = time.time()
new_sid = str(random.randint(100000000, 999999999)); #sid is 9 digits integer in string
session_id = new_sid
set_status("PROTECTED")
content += "New seesion ID is " + str(new_sid) + ".\n"
content += "Status is " + get_status() + ".\n"
web.setcookie("sid", new_sid, expires=3600)
showNavBar = True
return render.new(get_status(), showNavBar, content)
class GiveUp:
def GET(self):
web.header("Content-Type","text/html; charset=utf-8")
content = ""
showNavBar = False #Should show the navigation bar
if check_sid(web.cookies().get('sid')):
content += "Giving up.\n"
content += "Killing background utilities.\n"
content += os.popen("./stopall.sh").read()
set_status("IDLE")
content += "Status is " + get_status() + ".\n"
showNavBar = True
else:
content += "Serving other user.\nACCESS DENIED.\n"
return render.giveup(get_status(), showNavBar, content)
class Upload:
def GET(self):
web.header("Content-Type","text/html; charset=utf-8")
content = ""
if check_sid(web.cookies().get('sid')):
pass
else:
content += "Serving other user.\nACCESS DENIED.\n"
return render.upload(get_status(), check_sid(web.cookies().get('sid')), content, check_sid(web.cookies().get('sid')))
def POST(self):
web.header("Content-Type","text/html; charset=utf-8")
content = ""
if check_sid(web.cookies().get('sid')):
x = web.input(myfile={})
global filedir
if 'myfile' in x: # to check if the file-object is created
filepath=x.myfile.filename.replace('\\','/') # replaces the windows-style slashes with linux ones.
filename=filepath.split('/')[-1] # splits the and chooses the last part (the filename with extension)
fout = open(filedir +'/current.sof','w') # creates the file where the uploaded file should be stored
fout.write(x.myfile.file.read()) # writes the uploaded file to the newly created file.
fout.close() # closes the file, upload complete.
os.popen('cp ' + filedir +'/current.sof' + ' ' + filedir +'/' + web.cookies().get('sid') + '.sof').read() #make a copy to store sof file, comment this if not needed
content += "File Accepted.\n"
else:
content += "File not received.\n"
else:
content += "Serving other user.\nACCESS DENIED.\n"
return render.upload(get_status(), check_sid(web.cookies().get('sid')), content, check_sid(web.cookies().get('sid')))
class Program:
def GET(self):
web.header("Content-Type","text/html; charset=utf-8")
content = ""
if check_sid(web.cookies().get('sid')):
#content += "Killing background utilities.\n"
content += os.popen("./stopall.sh").read()
#content += "Programming.\n"
content += os.popen("./program.sh").read()
else:
content += "Serving other user.\nACCESS DENIED.\n"
return render.program(get_status(), check_sid(web.cookies().get('sid')), content)
class StartServer:
def GET(self):
web.header("Content-Type","text/html; charset=utf-8")
content = ""
if check_sid(web.cookies().get('sid')):
content += "Killing background utilities.\n"
content += os.popen("./stopall.sh").read()
content += "Starting server.\n"
content += os.popen("./tcpserver.sh").read()
content += "Please continue.\n"
else:
content += "Serving other user.\nACCESS DENIED.\n"
return render.startserver(get_status(), check_sid(web.cookies().get('sid')), content)
class InitTarget:
def GET(self):
web.header("Content-Type","text/html; charset=utf-8")
content = ""
if check_sid(web.cookies().get('sid')):
connrtn = conn()
if (connrtn == None):
send_recv(46 * '0' + '1') # Reset
send_recv(47 * '0') # Release reset signal
content += "Core reseted.\n"
else:
content += "Communication Failed.\n" + connrtn
else:
content += "Serving other user.\nACCESS DENIED.\n"
return render.inittarget(get_status(), check_sid(web.cookies().get('sid')), content)
class Interaction:
def GET(self):
web.header("Content-Type","text/html; charset=utf-8")
content = ""
inputReq = False
autoRefresh = False
inputChannel = ""
tryMore = True
if check_sid(web.cookies().get('sid')):
connrtn = conn()
if (connrtn == None):
while tryMore:
buf = send_recv(47 * '0')
if (buf[42] == '1'): #output request
res = "Output request #" + str(str_to_num(buf[34:38])) + " : " + str(str_to_num(buf[0:34], signext = True));
buf = 44 * '0' + '100'; #set out_ack
send_recv(buf)
buf = 44 * '0' + '000'; #set out_ack
send_recv(buf)
io_history = open('interaction.txt', 'a')
io_history.write(res + "\n")
io_history.close()
else:
inputReq = buf[43] == '1'
inputChannel = str(str_to_num(buf[38:42]))
tryMore = False
autoRefresh = not inputReq
sock.close()
else:
content += "Communication Failed.\n" + connrtn
io_history = open('interaction.txt', 'r')
content += io_history.read()
io_history.close()
else:
content += "Serving other user.\nACCESS DENIED.\n"
return render.interaction(get_status(), check_sid(web.cookies().get('sid')), content, autoRefresh, inputReq, inputChannel)
def POST(self):
web.header("Content-Type","text/html; charset=utf-8")
content = ""
if check_sid(web.cookies().get('sid')):
connrtn = conn()
if (connrtn == None):
try:
num = int(web.input().get('val', None))
except:
content += "Invalid input, assuming 0\n"
num = 0
buf = send_recv(47 * '0')
if (buf[43] == '1'): #input request
res = "Input request #" + str(str_to_num(buf[38:42])) + " : " + str(num)
buf = num_to_str(num) + 10 * '0' + '010'; #set in_ack
send_recv(buf)
buf = num_to_str(num) + 10 * '0' + '000'; #clr in_ack
send_recv(buf)
io_history = open('interaction.txt', 'a')
io_history.write(res + "\n")
io_history.close()
sock.close()
raise web.seeother('/interaction')
else:
content += connrtn
else:
content += "Serving other user.\nACCESS DENIED.\n"
return render.interaction(get_status(), check_sid(web.cookies().get('sid')), content, False, False, '')
class Nav:
def GET(self):
return render.nav(get_status())
if __name__ == "__main__":
app = web.application(urls, globals())
app.run()