573 lines
15 KiB
Python
573 lines
15 KiB
Python
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#!/usr/bin/env python
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""" Ajaxterm """
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import array,cgi,fcntl,glob,mimetypes,optparse,os,pty,random,re,signal,select,sys,threading,time,termios,struct,pwd
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os.chdir(os.path.normpath(os.path.dirname(__file__)))
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# Optional: Add QWeb in sys path
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sys.path[0:0]=glob.glob('../../python')
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import qweb
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class Terminal:
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def __init__(self,width=80,height=24):
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self.width=width
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self.height=height
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self.init()
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self.reset()
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def init(self):
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self.esc_seq={
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"\x00": None,
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"\x05": self.esc_da,
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"\x07": None,
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"\x08": self.esc_0x08,
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"\x09": self.esc_0x09,
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"\x0a": self.esc_0x0a,
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"\x0b": self.esc_0x0a,
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"\x0c": self.esc_0x0a,
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"\x0d": self.esc_0x0d,
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"\x0e": None,
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"\x0f": None,
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"\x1b#8": None,
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"\x1b=": None,
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"\x1b>": None,
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"\x1b(0": None,
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"\x1b(A": None,
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"\x1b(B": None,
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"\x1b[c": self.esc_da,
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"\x1b[0c": self.esc_da,
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"\x1b]R": None,
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"\x1b7": self.esc_save,
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"\x1b8": self.esc_restore,
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"\x1bD": None,
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"\x1bE": None,
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"\x1bH": None,
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"\x1bM": self.esc_ri,
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"\x1bN": None,
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"\x1bO": None,
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"\x1bZ": self.esc_da,
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"\x1ba": None,
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"\x1bc": self.reset,
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"\x1bn": None,
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"\x1bo": None,
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}
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for k,v in self.esc_seq.items():
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if v==None:
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self.esc_seq[k]=self.esc_ignore
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# regex
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d={
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r'\[\??([0-9;]*)([@ABCDEFGHJKLMPXacdefghlmnqrstu`])' : self.csi_dispatch,
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r'\]([^\x07]+)\x07' : self.esc_ignore,
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}
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self.esc_re=[]
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for k,v in d.items():
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self.esc_re.append((re.compile('\x1b'+k),v))
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# define csi sequences
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self.csi_seq={
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'@': (self.csi_at,[1]),
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'`': (self.csi_G,[1]),
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'J': (self.csi_J,[0]),
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'K': (self.csi_K,[0]),
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}
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for i in [i[4] for i in dir(self) if i.startswith('csi_') and len(i)==5]:
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if not self.csi_seq.has_key(i):
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self.csi_seq[i]=(getattr(self,'csi_'+i),[1])
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# Init 0-256 to latin1 and html translation table
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self.trl1=""
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for i in range(256):
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if i<32:
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self.trl1+=" "
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elif i<127 or i>160:
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self.trl1+=chr(i)
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else:
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self.trl1+="?"
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self.trhtml=""
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for i in range(256):
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if i==0x0a or (i>32 and i<127) or i>160:
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self.trhtml+=chr(i)
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elif i<=32:
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self.trhtml+="\xa0"
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else:
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self.trhtml+="?"
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def reset(self,s=""):
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self.scr=array.array('i',[0x000700]*(self.width*self.height))
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self.st=0
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self.sb=self.height-1
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self.cx_bak=self.cx=0
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self.cy_bak=self.cy=0
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self.cl=0
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self.sgr=0x000700
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self.buf=""
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self.outbuf=""
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self.last_html=""
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def peek(self,y1,x1,y2,x2):
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return self.scr[self.width*y1+x1:self.width*y2+x2]
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def poke(self,y,x,s):
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pos=self.width*y+x
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self.scr[pos:pos+len(s)]=s
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def zero(self,y1,x1,y2,x2):
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w=self.width*(y2-y1)+x2-x1+1
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z=array.array('i',[0x000700]*w)
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self.scr[self.width*y1+x1:self.width*y2+x2+1]=z
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def scroll_up(self,y1,y2):
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self.poke(y1,0,self.peek(y1+1,0,y2,self.width))
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self.zero(y2,0,y2,self.width-1)
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def scroll_down(self,y1,y2):
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self.poke(y1+1,0,self.peek(y1,0,y2-1,self.width))
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self.zero(y1,0,y1,self.width-1)
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def scroll_right(self,y,x):
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self.poke(y,x+1,self.peek(y,x,y,self.width))
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self.zero(y,x,y,x)
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def cursor_down(self):
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if self.cy>=self.st and self.cy<=self.sb:
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self.cl=0
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q,r=divmod(self.cy+1,self.sb+1)
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if q:
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self.scroll_up(self.st,self.sb)
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self.cy=self.sb
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else:
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self.cy=r
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def cursor_right(self):
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q,r=divmod(self.cx+1,self.width)
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if q:
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self.cl=1
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else:
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self.cx=r
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def echo(self,c):
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if self.cl:
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self.cursor_down()
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self.cx=0
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self.scr[(self.cy*self.width)+self.cx]=self.sgr|ord(c)
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self.cursor_right()
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def esc_0x08(self,s):
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self.cx=max(0,self.cx-1)
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def esc_0x09(self,s):
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x=self.cx+8
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q,r=divmod(x,8)
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self.cx=(q*8)%self.width
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def esc_0x0a(self,s):
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self.cursor_down()
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def esc_0x0d(self,s):
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self.cl=0
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self.cx=0
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def esc_save(self,s):
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self.cx_bak=self.cx
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self.cy_bak=self.cy
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def esc_restore(self,s):
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self.cx=self.cx_bak
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self.cy=self.cy_bak
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self.cl=0
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def esc_da(self,s):
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self.outbuf="\x1b[?6c"
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def esc_ri(self,s):
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self.cy=max(self.st,self.cy-1)
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if self.cy==self.st:
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self.scroll_down(self.st,self.sb)
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def esc_ignore(self,*s):
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pass
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# print "term:ignore: %s"%repr(s)
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def csi_dispatch(self,seq,mo):
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# CSI sequences
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s=mo.group(1)
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c=mo.group(2)
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f=self.csi_seq.get(c,None)
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if f:
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try:
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l=[min(int(i),1024) for i in s.split(';') if len(i)<4]
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except ValueError:
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l=[]
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if len(l)==0:
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l=f[1]
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f[0](l)
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# else:
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# print 'csi ignore',c,l
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def csi_at(self,l):
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for i in range(l[0]):
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self.scroll_right(self.cy,self.cx)
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def csi_A(self,l):
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self.cy=max(self.st,self.cy-l[0])
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def csi_B(self,l):
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self.cy=min(self.sb,self.cy+l[0])
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def csi_C(self,l):
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self.cx=min(self.width-1,self.cx+l[0])
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self.cl=0
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def csi_D(self,l):
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self.cx=max(0,self.cx-l[0])
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self.cl=0
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def csi_E(self,l):
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self.csi_B(l)
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self.cx=0
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self.cl=0
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def csi_F(self,l):
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self.csi_A(l)
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self.cx=0
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self.cl=0
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def csi_G(self,l):
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self.cx=min(self.width,l[0])-1
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def csi_H(self,l):
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if len(l)<2: l=[1,1]
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self.cx=min(self.width,l[1])-1
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self.cy=min(self.height,l[0])-1
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self.cl=0
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def csi_J(self,l):
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if l[0]==0:
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self.zero(self.cy,self.cx,self.height-1,self.width-1)
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elif l[0]==1:
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self.zero(0,0,self.cy,self.cx)
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elif l[0]==2:
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self.zero(0,0,self.height-1,self.width-1)
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def csi_K(self,l):
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if l[0]==0:
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self.zero(self.cy,self.cx,self.cy,self.width-1)
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elif l[0]==1:
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self.zero(self.cy,0,self.cy,self.cx)
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elif l[0]==2:
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self.zero(self.cy,0,self.cy,self.width-1)
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def csi_L(self,l):
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for i in range(l[0]):
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if self.cy<self.sb:
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self.scroll_down(self.cy,self.sb)
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def csi_M(self,l):
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if self.cy>=self.st and self.cy<=self.sb:
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for i in range(l[0]):
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self.scroll_up(self.cy,self.sb)
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def csi_P(self,l):
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w,cx,cy=self.width,self.cx,self.cy
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end=self.peek(cy,cx,cy,w)
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self.csi_K([0])
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self.poke(cy,cx,end[l[0]:])
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def csi_X(self,l):
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self.zero(self.cy,self.cx,self.cy,self.cx+l[0])
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def csi_a(self,l):
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self.csi_C(l)
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def csi_c(self,l):
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#'\x1b[?0c' 0-8 cursor size
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pass
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def csi_d(self,l):
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self.cy=min(self.height,l[0])-1
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def csi_e(self,l):
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self.csi_B(l)
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def csi_f(self,l):
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self.csi_H(l)
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def csi_h(self,l):
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if l[0]==4:
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pass
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# print "insert on"
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def csi_l(self,l):
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if l[0]==4:
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pass
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# print "insert off"
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def csi_m(self,l):
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for i in l:
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if i==0 or i==39 or i==49 or i==27:
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self.sgr=0x000700
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elif i==1:
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self.sgr=(self.sgr|0x000800)
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elif i==7:
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self.sgr=0x070000
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elif i>=30 and i<=37:
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c=i-30
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self.sgr=(self.sgr&0xff08ff)|(c<<8)
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elif i>=40 and i<=47:
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c=i-40
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self.sgr=(self.sgr&0x00ffff)|(c<<16)
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# else:
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# print "CSI sgr ignore",l,i
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# print 'sgr: %r %x'%(l,self.sgr)
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def csi_r(self,l):
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if len(l)<2: l=[0,self.height]
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self.st=min(self.height-1,l[0]-1)
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self.sb=min(self.height-1,l[1]-1)
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self.sb=max(self.st,self.sb)
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def csi_s(self,l):
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self.esc_save(0)
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def csi_u(self,l):
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self.esc_restore(0)
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def escape(self):
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e=self.buf
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if len(e)>32:
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# print "error %r"%e
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self.buf=""
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elif e in self.esc_seq:
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self.esc_seq[e](e)
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self.buf=""
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else:
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for r,f in self.esc_re:
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mo=r.match(e)
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if mo:
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f(e,mo)
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self.buf=""
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break
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# if self.buf=='': print "ESC %r\n"%e
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def write(self,s):
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for i in s:
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if len(self.buf) or (i in self.esc_seq):
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self.buf+=i
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self.escape()
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elif i == '\x1b':
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self.buf+=i
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else:
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self.echo(i)
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def read(self):
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b=self.outbuf
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self.outbuf=""
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return b
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def dump(self):
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r=''
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for i in self.scr:
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r+=chr(i&255)
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return r
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def dumplatin1(self):
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return self.dump().translate(self.trl1)
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def dumphtml(self,color=1):
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h=self.height
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w=self.width
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r=""
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span=""
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span_bg,span_fg=-1,-1
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for i in range(h*w):
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q,c=divmod(self.scr[i],256)
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if color:
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bg,fg=divmod(q,256)
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else:
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bg,fg=0,7
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if i==self.cy*w+self.cx:
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bg,fg=1,7
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if (bg!=span_bg or fg!=span_fg or i==h*w-1):
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if len(span):
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r+='<span class="f%d b%d">%s</span>'%(span_fg,span_bg,cgi.escape(span.translate(self.trhtml)))
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span=""
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span_bg,span_fg=bg,fg
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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")
|
||
|
|
q=req.REQUEST.int("q")
|
||
|
|
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
|
||
|
|
if (1 == q):
|
||
|
|
self.multi.proc_kill(self.session[s])
|
||
|
|
time.sleep(0.002)
|
||
|
|
del self.session[s]
|
||
|
|
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()
|
||
|
|
|