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server.py
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server.py
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#-*-coding:utf-8-*-
'''
login_data:
(1)[group_chat, group_title, id]
(2)[group, group_title, id, text]
(3)[single_person, end_name, recv_name, text]
(4)[login, id, password]
'''
from socket import *
import threading
import pymysql
import os
import sys
import struct
import inspect
import ctypes
def _async_raise(tid, exctype):
"""raises the exception, performs cleanup if needed"""
tid = ctypes.c_long(tid)
if not inspect.isclass(exctype):
exctype = type(exctype)
res = ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, ctypes.py_object(exctype))
if res == 0:
raise ValueError("invalid thread id")
elif res != 1:
# """if it returns a number greater than one, you're in trouble,
# and you should call it again with exc=NULL to revert the effect"""
ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, None)
raise SystemError("PyThreadState_SetAsyncExc failed")
def stop_thread(thread):
_async_raise(thread.ident, SystemExit)
db = pymysql.connect("localhost", "root", "root", "liuchang")
cursor = db.cursor()
sql = 'select * from simple'
try:
cursor.execute(sql)
result = cursor.fetchall()
except:
print('error: cant fetch data ')
address='127.0.0.1'
port = 6337
buffsize = 1024
s = socket(AF_INET, SOCK_STREAM)
s.bind((address, port))
s.listen(10) #最大连接数
client_list = []
user_list = []
for i in result:
user_list.append([i[1], i[2]])
print(user_list)
user_l = len(user_list)
user_client = []
thread_list = []
group_list = [['信息安全专业群'], ['信息安全学习群'], ['兼职群']]
def login(logindata, clientsock):
for x in range(0, user_l):
print("登录请求"+str(logindata[1]))
if len(user_client)>=1:
ul=len(user_client)
if str(user_list[x][0])==str(logindata[1]) and str(user_list[x][1])!=str(logindata[2]):
login_bkinfo = 'error_password'
clientsock.send(login_bkinfo.encode())
break
elif str(user_list[x][0])==str(logindata[1]) and str(user_list[x][1])==str(logindata[2]):
for user_cl in range(0, ul):
if str(user_client[user_cl][0]) == str(logindata[1]):
login_bkinfo = 'error_login'
clientsock.send(login_bkinfo.encode())
break
elif user_cl == ul - 1:
usercl=[]
usercl.append(logindata[1])
usercl.append(clientsock)
login_bkinfo = 'OK'
user_client.append(usercl)
#print(user_client)
clientsock.send(login_bkinfo.encode())
break
elif x==user_l-1:
login_bkinfo = 'error_id'
clientsock.send(login_bkinfo.encode())
else:
if str(user_list[x][0])==str(logindata[1]) and str(user_list[x][1])!=str(logindata[2]):
login_bkinfo = 'error_password'
clientsock.send(login_bkinfo.encode())
break
elif str(user_list[x][0])==str(logindata[1]) and str(user_list[x][1])==str(logindata[2]):
usercl=[]
usercl.append(logindata[1])
usercl.append(clientsock)
login_bkinfo = 'OK'
user_client.append(usercl)
#print(user_client)
clientsock.send(login_bkinfo.encode())
break
elif x==user_l-1:
login_bkinfo = 'error_id'
clientsock.send(login_bkinfo.encode())
def tcplink(clientsock, clientaddress):
group_l = len(group_list)
while True:
recvdata = clientsock.recv(buffsize).decode('utf-8')
logindata = recvdata.split('*')
print(logindata)
if str(logindata[0]) == 'login':
login(logindata, clientsock)
elif str(logindata[0]) == 'group_chat':
#reqci=1
for y in range(0, group_l):
if str(group_list[y][0]) == str(logindata[1]):
requser=str(logindata[2])+' '+'加入'
group_list[y].append(clientsock)
groupl=len(group_list[y])
if groupl>2:
for h in range(1,groupl):
group_list[y][h].send(requser.encode())
else:
clientsock.send(requser.encode())
break
elif str(logindata[0]) == 'group':
#接受文件
'''
先接受图片到本地缓存server_down_loads，再识别接受用户，
判断其是否在线，若在线进行转发，否则不转发，提示不在线
使用一个数据包file来预定一个文件的发送时间，在接收到file的
提示数据包的时候，就准备接受一个file，与用户转发也是同理
'''
if logindata[3] == "file":
fileinfo_size = struct.calcsize('128sl')
buf = clientsock.recv(fileinfo_size)
if buf:
filename, filesize = struct.unpack('128sl', buf)
fn = filename.decode().strip('\x00')
new_filename = os.path.join('./server_downloads', fn)
recvd_size = 0
fp = open(new_filename, 'wb')
while not recvd_size == filesize:
if filesize - recvd_size > 1024:
data = clientsock.recv(1024)
recvd_size += len(data)
else:
data = clientsock.recv(1024)
recvd_size = filesize
fp.write(data)
fp.close()
#转发文件给群内成员
for wl in range(0, group_l):
if str(group_list[wl][0]) == str(logindata[1]):
senddata = ["file"]
senddata.append(str(logindata[2])+":")
senddata = '*'.join(senddata)
l = len(group_list[wl])
try:
if l >=2:
for x in range(1, l):
group_list[wl][x].send(senddata.encode())
file_path = new_filename
fhead = struct.pack(b'128sl', bytes(os.path.basename(file_path), encoding='utf-8'), os.stat(file_path).st_size)
print('client filepath: {0}'.format(file_path))
group_list[wl][x].send(fhead)
fp = open(file_path, 'rb')
while 1:
data = fp.read(1024)
if not data:
print('{0} file send over...'.format(file_path))
break
group_list[wl][x].send(data)
else:
#clientsock.send(senddata.encode())
break
print("群聊信息" + str(senddata)+str(clientaddress))
except ValueError:
break
#正常普通交流信息
else:
for wl in range(0, group_l):
if str(group_list[wl][0]) == str(logindata[1]):
senddata=str(logindata[2])+":"+str(logindata[3])
l = len(group_list[wl])
try:
if l >=2:
for x in range(1, l):
group_list[wl][x].send(senddata.encode())
else:
clientsock.send(senddata.encode())
break
#print("群聊信息" + str(senddata)+str(clientaddress))
except ValueError:
break
elif str(logindata[0]) == 'single_person':
if logindata[3] == "file":
'''
先接受图片到本地缓存server_down_loads，再识别接受用户，
判断其是否在线，若在线进行转发，否则不转发，提示不在线
使用一个数据包file来预定一个文件的发送时间，在接收到file的
提示数据包的时候，就准备接受一个file，与用户转发也是同理
'''
fileinfo_size = struct.calcsize('128sl')
buf = clientsock.recv(fileinfo_size)
if buf:
filename, filesize = struct.unpack('128sl', buf)
fn = filename.decode().strip('\x00')
new_filename = os.path.join('./server_downloads', fn)
recvd_size = 0
fp = open(new_filename, 'wb')
while not recvd_size == filesize:
if filesize - recvd_size > 1024:
data = clientsock.recv(1024)
recvd_size += len(data)
else:
data = clientsock.recv(1024)
recvd_size = filesize
fp.write(data)
fp.close()
#转发给用户
user_cl = len(user_client)
#print(user_client)
senddata = ["file"]
senddata.append(str(logindata[1])+":")
send_info = '*'.join(senddata)
z = 1
for pl in range(0,user_cl):
if user_client[pl][0] == logindata[2]:
#print(logindata[2])
user_client[pl][1].send(send_info.encode())
file_path = new_filename
fhead = struct.pack(b'128sl', bytes(os.path.basename(file_path), encoding='utf-8'), os.stat(file_path).st_size)
print('client filepath: {0}'.format(file_path))
user_client[pl][1].send(fhead)
fp = open(file_path, 'rb')
while 1:
data = fp.read(1024)
if not data:
print('{0} file send over...'.format(file_path))
break
user_client[pl][1].send(data)
#clientsock.send(send_info.encode())
break
elif z == user_cl:
back = str(logindata[2])+'不在线'
clientsock.send(back.encode())
z+=1
'''
for wl in range(0, group_l):
if str(group_list[wl][0]) == str(logindata[1]):
senddata = ["file"]
senddata.append(str(logindata[2])+":")
senddata = '*'.join(senddata)
l = len(group_list[wl])
try:
if l >=2:
for x in range(1, l):
group_list[wl][x].send(senddata.encode())
file_path = new_filename
fhead = struct.pack(b'128sl', bytes(os.path.basename(file_path), encoding='utf-8'), os.stat(file_path).st_size)
print('client filepath: {0}'.format(file_path))
group_list[wl][x].send(fhead)
fp = open(file_path, 'rb')
while 1:
data = fp.read(1024)
if not data:
print('{0} file send over...'.format(file_path))
break
group_list[wl][x].send(data)
else:
#clientsock.send(senddata.encode())
break
print("群聊信息" + str(senddata)+str(clientaddress))
except ValueError:
break
'''
else:
#print(logindata)
user_cl = len(user_client)
#print(user_client)
send_info = str(logindata[1])+":"+str(logindata[3])
z = 1
for pl in range(0,user_cl):
if user_client[pl][0] == logindata[2]:
user_client[pl][1].send(send_info.encode())
#clientsock.send(send_info.encode())
break
elif z==user_cl:
back=str(logindata[2])+'不在线'
clientsock.send(back.encode())
z+=1
elif str(logindata[0]) == 'quit':
user_cl = len(user_client)
for pl in range(0,user_cl):
if user_client[pl][0]==logindata[1]:
del user_client[pl]
#clientsock.send(send_info.encode())
break
break
elif str(logindata[0]) == '':
print('无法识别：')
print(logindata[0])
break
clientsock.close()
#del client_list[-1]
while True:
clientsock, clientaddress = s.accept()
client_list.append(clientsock)
print('connect from:',clientaddress)
'''joinfo=str(clientaddress)
try:
ld=len(client_list)
for x in range(0, ld):
client_list[x].send(joinfo.encode())
except ValueError:
continue
'''
t=threading.Thread(target=tcplink,args=(clientsock,clientaddress)) #新创建的线程
t.start()
s.close()