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#!/usr/bin/env python
""" Ajaxterm """
import array,cgi,fcntl,glob,mimetypes,optparse,os,pty,random,re,signal,select,sys,threading,time,termios,struct,pwd
os.chdir(os.path.normpath(os.path.dirname(__file__)))
# Optional: Add QWeb in sys path
sys.path[0:0]=glob.glob('../../python')
import qweb
class Terminal:
def __init__(self,width=80,height=24):
self.width=width
self.height=height
self.init()
self.reset()
def init(self):
self.esc_seq={
"\x00": None,
"\x05": self.esc_da,
"\x07": None,
"\x08": self.esc_0x08,
"\x09": self.esc_0x09,
"\x0a": self.esc_0x0a,
"\x0b": self.esc_0x0a,
"\x0c": self.esc_0x0a,
"\x0d": self.esc_0x0d,
"\x0e": None,
"\x0f": None,
"\x1b#8": None,
"\x1b=": None,
"\x1b>": None,
"\x1b(0": None,
"\x1b(A": None,
"\x1b(B": None,
"\x1b[c": self.esc_da,
"\x1b[0c": self.esc_da,
"\x1b]R": None,
"\x1b7": self.esc_save,
"\x1b8": self.esc_restore,
"\x1bD": None,
"\x1bE": None,
"\x1bH": None,
"\x1bM": self.esc_ri,
"\x1bN": None,
"\x1bO": None,
"\x1bZ": self.esc_da,
"\x1ba": None,
"\x1bc": self.reset,
"\x1bn": None,
"\x1bo": None,
}
for k,v in self.esc_seq.items():
if v==None:
self.esc_seq[k]=self.esc_ignore
# regex
d={
r'\[\??([0-9;]*)([@ABCDEFGHJKLMPXacdefghlmnqrstu`])' : self.csi_dispatch,
r'\]([^\x07]+)\x07' : self.esc_ignore,
}
self.esc_re=[]
for k,v in d.items():
self.esc_re.append((re.compile('\x1b'+k),v))
# define csi sequences
self.csi_seq={
'@': (self.csi_at,[1]),
'`': (self.csi_G,[1]),
'J': (self.csi_J,[0]),
'K': (self.csi_K,[0]),
}
for i in [i[4] for i in dir(self) if i.startswith('csi_') and len(i)==5]:
if not self.csi_seq.has_key(i):
self.csi_seq[i]=(getattr(self,'csi_'+i),[1])
# Init 0-256 to latin1 and html translation table
self.trl1=""
for i in range(256):
if i<32:
self.trl1+=" "
elif i<127 or i>160:
self.trl1+=chr(i)
else:
self.trl1+="?"
self.trhtml=""
for i in range(256):
if i==0x0a or (i>32 and i<127) or i>160:
self.trhtml+=chr(i)
elif i<=32:
self.trhtml+="\xa0"
else:
self.trhtml+="?"
def reset(self,s=""):
self.scr=array.array('i',[0x000700]*(self.width*self.height))
self.st=0
self.sb=self.height-1
self.cx_bak=self.cx=0
self.cy_bak=self.cy=0
self.cl=0
self.sgr=0x000700
self.buf=""
self.outbuf=""
self.last_html=""
def peek(self,y1,x1,y2,x2):
return self.scr[self.width*y1+x1:self.width*y2+x2]
def poke(self,y,x,s):
pos=self.width*y+x
self.scr[pos:pos+len(s)]=s
def zero(self,y1,x1,y2,x2):
w=self.width*(y2-y1)+x2-x1+1
z=array.array('i',[0x000700]*w)
self.scr[self.width*y1+x1:self.width*y2+x2+1]=z
def scroll_up(self,y1,y2):
self.poke(y1,0,self.peek(y1+1,0,y2,self.width))
self.zero(y2,0,y2,self.width-1)
def scroll_down(self,y1,y2):
self.poke(y1+1,0,self.peek(y1,0,y2-1,self.width))
self.zero(y1,0,y1,self.width-1)
def scroll_right(self,y,x):
self.poke(y,x+1,self.peek(y,x,y,self.width))
self.zero(y,x,y,x)
def cursor_down(self):
if self.cy>=self.st and self.cy<=self.sb:
self.cl=0
q,r=divmod(self.cy+1,self.sb+1)
if q:
self.scroll_up(self.st,self.sb)
self.cy=self.sb
else:
self.cy=r
def cursor_right(self):
q,r=divmod(self.cx+1,self.width)
if q:
self.cl=1
else:
self.cx=r
def echo(self,c):
if self.cl:
self.cursor_down()
self.cx=0
self.scr[(self.cy*self.width)+self.cx]=self.sgr|ord(c)
self.cursor_right()
def esc_0x08(self,s):
self.cx=max(0,self.cx-1)
def esc_0x09(self,s):
x=self.cx+8
q,r=divmod(x,8)
self.cx=(q*8)%self.width
def esc_0x0a(self,s):
self.cursor_down()
def esc_0x0d(self,s):
self.cl=0
self.cx=0
def esc_save(self,s):
self.cx_bak=self.cx
self.cy_bak=self.cy
def esc_restore(self,s):
self.cx=self.cx_bak
self.cy=self.cy_bak
self.cl=0
def esc_da(self,s):
self.outbuf="\x1b[?6c"
def esc_ri(self,s):
self.cy=max(self.st,self.cy-1)
if self.cy==self.st:
self.scroll_down(self.st,self.sb)
def esc_ignore(self,*s):
pass
# print "term:ignore: %s"%repr(s)
def csi_dispatch(self,seq,mo):
# CSI sequences
s=mo.group(1)
c=mo.group(2)
f=self.csi_seq.get(c,None)
if f:
try:
l=[min(int(i),1024) for i in s.split(';') if len(i)<4]
except ValueError:
l=[]
if len(l)==0:
l=f[1]
f[0](l)
# else:
# print 'csi ignore',c,l
def csi_at(self,l):
for i in range(l[0]):
self.scroll_right(self.cy,self.cx)
def csi_A(self,l):
self.cy=max(self.st,self.cy-l[0])
def csi_B(self,l):
self.cy=min(self.sb,self.cy+l[0])
def csi_C(self,l):
self.cx=min(self.width-1,self.cx+l[0])
self.cl=0
def csi_D(self,l):
self.cx=max(0,self.cx-l[0])
self.cl=0
def csi_E(self,l):
self.csi_B(l)
self.cx=0
self.cl=0
def csi_F(self,l):
self.csi_A(l)
self.cx=0
self.cl=0
def csi_G(self,l):
self.cx=min(self.width,l[0])-1
def csi_H(self,l):
if len(l)<2: l=[1,1]
self.cx=min(self.width,l[1])-1
self.cy=min(self.height,l[0])-1
self.cl=0
def csi_J(self,l):
if l[0]==0:
self.zero(self.cy,self.cx,self.height-1,self.width-1)
elif l[0]==1:
self.zero(0,0,self.cy,self.cx)
elif l[0]==2:
self.zero(0,0,self.height-1,self.width-1)
def csi_K(self,l):
if l[0]==0:
self.zero(self.cy,self.cx,self.cy,self.width-1)
elif l[0]==1:
self.zero(self.cy,0,self.cy,self.cx)
elif l[0]==2:
self.zero(self.cy,0,self.cy,self.width-1)
def csi_L(self,l):
for i in range(l[0]):
if self.cy<self.sb:
self.scroll_down(self.cy,self.sb)
def csi_M(self,l):
if self.cy>=self.st and self.cy<=self.sb:
for i in range(l[0]):
self.scroll_up(self.cy,self.sb)
def csi_P(self,l):
w,cx,cy=self.width,self.cx,self.cy
end=self.peek(cy,cx,cy,w)
self.csi_K([0])
self.poke(cy,cx,end[l[0]:])
def csi_X(self,l):
self.zero(self.cy,self.cx,self.cy,self.cx+l[0])
def csi_a(self,l):
self.csi_C(l)
def csi_c(self,l):
#'\x1b[?0c' 0-8 cursor size
pass
def csi_d(self,l):
self.cy=min(self.height,l[0])-1
def csi_e(self,l):
self.csi_B(l)
def csi_f(self,l):
self.csi_H(l)
def csi_h(self,l):
if l[0]==4:
pass
# print "insert on"
def csi_l(self,l):
if l[0]==4:
pass
# print "insert off"
def csi_m(self,l):
for i in l:
if i==0 or i==39 or i==49 or i==27:
self.sgr=0x000700
elif i==1:
self.sgr=(self.sgr|0x000800)
elif i==7:
self.sgr=0x070000
elif i>=30 and i<=37:
c=i-30
self.sgr=(self.sgr&0xff08ff)|(c<<8)
elif i>=40 and i<=47:
c=i-40
self.sgr=(self.sgr&0x00ffff)|(c<<16)
# else:
# print "CSI sgr ignore",l,i
# print 'sgr: %r %x'%(l,self.sgr)
def csi_r(self,l):
if len(l)<2: l=[0,self.height]
self.st=min(self.height-1,l[0]-1)
self.sb=min(self.height-1,l[1]-1)
self.sb=max(self.st,self.sb)
def csi_s(self,l):
self.esc_save(0)
def csi_u(self,l):
self.esc_restore(0)
def escape(self):
e=self.buf
if len(e)>32:
# print "error %r"%e
self.buf=""
elif e in self.esc_seq:
self.esc_seq[e](e)
self.buf=""
else:
for r,f in self.esc_re:
mo=r.match(e)
if mo:
f(e,mo)
self.buf=""
break
# if self.buf=='': print "ESC %r\n"%e
def write(self,s):
for i in s:
if len(self.buf) or (i in self.esc_seq):
self.buf+=i
self.escape()
elif i == '\x1b':
self.buf+=i
else:
self.echo(i)
def read(self):
b=self.outbuf
self.outbuf=""
return b
def dump(self):
r=''
for i in self.scr:
r+=chr(i&255)
return r
def dumplatin1(self):
return self.dump().translate(self.trl1)
def dumphtml(self,color=1):
h=self.height
w=self.width
r=""
span=""
span_bg,span_fg=-1,-1
for i in range(h*w):
q,c=divmod(self.scr[i],256)
if color:
bg,fg=divmod(q,256)
else:
bg,fg=0,7
if i==self.cy*w+self.cx:
bg,fg=1,7
if (bg!=span_bg or fg!=span_fg or i==h*w-1):
if len(span):
r+='<span class="f%d b%d">%s</span>'%(span_fg,span_bg,cgi.escape(span.translate(self.trhtml)))
span=""
span_bg,span_fg=bg,fg
span+=chr(c)
if i%w==w-1:
span+='\n'
r='<?xml version="1.0" encoding="ISO-8859-1"?><pre class="term">%s</pre>'%r
if self.last_html==r:
return '<?xml version="1.0"?><idem></idem>'
else:
self.last_html=r
# print self
return r
def __repr__(self):
d=self.dumplatin1()
r=""
for i in range(self.height):
r+="|%s|\n"%d[self.width*i:self.width*(i+1)]
return r
class SynchronizedMethod:
def __init__(self,lock,orig):
self.lock=lock
self.orig=orig
def __call__(self,*l):
self.lock.acquire()
r=self.orig(*l)
self.lock.release()
return r
class Multiplex:
def __init__(self,cmd=None):
signal.signal(signal.SIGCHLD, signal.SIG_IGN)
self.cmd=cmd
self.proc={}
self.lock=threading.RLock()
self.thread=threading.Thread(target=self.loop)
self.alive=1
# synchronize methods
for name in ['create','fds','proc_read','proc_write','dump','die','run']:
orig=getattr(self,name)
setattr(self,name,SynchronizedMethod(self.lock,orig))
self.thread.start()
def create(self,w=80,h=25):
pid,fd=pty.fork()
if pid==0:
try:
fdl=[int(i) for i in os.listdir('/proc/self/fd')]
except OSError:
fdl=range(256)
for i in [i for i in fdl if i>2]:
try:
os.close(i)
except OSError:
pass
if self.cmd:
cmd=['/bin/sh','-c',self.cmd]
elif os.getuid()==0:
cmd=['/bin/login']
else:
sys.stdout.write("Login: ")
login=sys.stdin.readline().strip()
if re.match('^[0-9A-Za-z-_. ]+$',login):
cmd=['ssh']
cmd+=['-oPreferredAuthentications=keyboard-interactive,password']
cmd+=['-oNoHostAuthenticationForLocalhost=yes']
cmd+=['-oLogLevel=FATAL']
cmd+=['-F/dev/null','-l',login,'localhost']
else:
os._exit(0)
env={}
env["COLUMNS"]=str(w)
env["LINES"]=str(h)
env["TERM"]="linux"
env["PATH"]=os.environ['PATH']
os.execvpe(cmd[0],cmd,env)
else:
fcntl.fcntl(fd, fcntl.F_SETFL, os.O_NONBLOCK)
# python bug http://python.org/sf/1112949 on amd64
fcntl.ioctl(fd, struct.unpack('i',struct.pack('I',termios.TIOCSWINSZ))[0], struct.pack("HHHH",h,w,0,0))
self.proc[fd]={'pid':pid,'term':Terminal(w,h),'buf':'','time':time.time()}
return fd
def die(self):
self.alive=0
def run(self):
return self.alive
def fds(self):
return self.proc.keys()
def proc_kill(self,fd):
if fd in self.proc:
self.proc[fd]['time']=0
t=time.time()
for i in self.proc.keys():
t0=self.proc[i]['time']
if (t-t0)>120:
try:
os.close(i)
os.kill(self.proc[i]['pid'],signal.SIGTERM)
except (IOError,OSError):
pass
del self.proc[i]
def proc_read(self,fd):
try:
t=self.proc[fd]['term']
t.write(os.read(fd,65536))
reply=t.read()
if reply:
os.write(fd,reply)
self.proc[fd]['time']=time.time()
except (KeyError,IOError,OSError):
self.proc_kill(fd)
def proc_write(self,fd,s):
try:
os.write(fd,s)
except (IOError,OSError):
self.proc_kill(fd)
def dump(self,fd,color=1):
try:
return self.proc[fd]['term'].dumphtml(color)
except KeyError:
return False
def loop(self):
while self.run():
fds=self.fds()
i,o,e=select.select(fds, [], [], 1.0)
for fd in i:
self.proc_read(fd)
if len(i):
time.sleep(0.002)
for i in self.proc.keys():
try:
os.close(i)
os.kill(self.proc[i]['pid'],signal.SIGTERM)
except (IOError,OSError):
pass
class AjaxTerm:
def __init__(self,cmd=None,index_file='ajaxterm.html'):
self.files={}
for i in ['css','html','js']:
for j in glob.glob('*.%s'%i):
self.files[j]=file(j).read()
self.files['index']=file(index_file).read()
self.mime = mimetypes.types_map.copy()
self.mime['.html']= 'text/html; charset=UTF-8'
self.multi = Multiplex(cmd)
self.session = {}
def __call__(self, environ, start_response):
req = qweb.QWebRequest(environ, start_response,session=None)
if req.PATH_INFO.endswith('/u'):
s=req.REQUEST["s"]
k=req.REQUEST["k"]
c=req.REQUEST["c"]
w=req.REQUEST.int("w")
h=req.REQUEST.int("h")
if s in self.session:
term=self.session[s]
else:
if not (w>2 and w<256 and h>2 and h<100):
w,h=80,25
term=self.session[s]=self.multi.create(w,h)
if k:
self.multi.proc_write(term,k)
time.sleep(0.002)
dump=self.multi.dump(term,c)
req.response_headers['Content-Type']='text/xml'
if isinstance(dump,str):
req.write(dump)
req.response_gzencode=1
else:
del self.session[s]
req.write('<?xml version="1.0"?><idem></idem>')
# print "sessions %r"%self.session
else:
n=os.path.basename(req.PATH_INFO)
if n in self.files:
req.response_headers['Content-Type'] = self.mime.get(os.path.splitext(n)[1].lower(), 'application/octet-stream')
req.write(self.files[n])
else:
req.response_headers['Content-Type'] = 'text/html; charset=UTF-8'
req.write(self.files['index'])
return req
def main():
parser = optparse.OptionParser()
parser.add_option("-p", "--port", dest="port", default="8022", help="Set the TCP port (default: 8022)")
parser.add_option("-c", "--command", dest="cmd", default=None,help="set the command (default: /bin/login or ssh localhost)")
parser.add_option("-l", "--log", action="store_true", dest="log",default=0,help="log requests to stderr (default: quiet mode)")
parser.add_option("-d", "--daemon", action="store_true", dest="daemon", default=0, help="run as daemon in the background")
parser.add_option("-P", "--pidfile",dest="pidfile",default="/var/run/ajaxterm.pid",help="set the pidfile (default: /var/run/ajaxterm.pid)")
parser.add_option("-i", "--index", dest="index_file", default="ajaxterm.html",help="default index file (default: ajaxterm.html)")
parser.add_option("-u", "--uid", dest="uid", help="Set the daemon's user id")
(o, a) = parser.parse_args()
if o.daemon:
pid=os.fork()
if pid == 0:
#os.setsid() ?
os.setpgrp()
nullin = file('/dev/null', 'r')
nullout = file('/dev/null', 'w')
os.dup2(nullin.fileno(), sys.stdin.fileno())
os.dup2(nullout.fileno(), sys.stdout.fileno())
os.dup2(nullout.fileno(), sys.stderr.fileno())
if os.getuid()==0 and o.uid:
try:
os.setuid(int(o.uid))
except:
os.setuid(pwd.getpwnam(o.uid).pw_uid)
else:
try:
file(o.pidfile,'w+').write(str(pid)+'\n')
except:
pass
print 'AjaxTerm at http://localhost:%s/ pid: %d' % (o.port,pid)
sys.exit(0)
else:
print 'AjaxTerm at http://localhost:%s/' % o.port
at=AjaxTerm(o.cmd,o.index_file)
# f=lambda:os.system('firefox http://localhost:%s/&'%o.port)
# qweb.qweb_wsgi_autorun(at,ip='localhost',port=int(o.port),threaded=0,log=o.log,callback_ready=None)
try:
qweb.QWebWSGIServer(at,ip='localhost',port=int(o.port),threaded=0,log=o.log).serve_forever()
except KeyboardInterrupt,e:
sys.excepthook(*sys.exc_info())
at.multi.die()
if __name__ == '__main__':
main()
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