Manual:API Python3

Summary

Since python language have introduced changes to syntax when going from 2.x to 3.x some adjustments had to be made for old code from API.

Code for Python3

code

#!/usr/bin/python3

import sys, posix, time, binascii, socket, select
import hashlib

class ApiRos:
    "Routeros api"
    def __init__(self, sk):
        self.sk = sk
        self.currenttag = 0
        
    def login(self, username, pwd):
        for repl, attrs in self.talk(["/login"]):
            chal = binascii.unhexlify((attrs['=ret']).encode('UTF-8'))
        md = hashlib.md5()
        md.update(b'\x00')
        md.update(pwd.encode('UTF-8'))
        md.update(chal)
        self.talk(["/login", "=name=" + username,
                   "=response=00" + binascii.hexlify(md.digest()).decode('UTF-8') ])

    def talk(self, words):
        if self.writeSentence(words) == 0: return
        r = []
        while 1:
            i = self.readSentence();
            if len(i) == 0: continue
            reply = i[0]
            attrs = {}
            for w in i[1:]:
                j = w.find('=', 1)
                if (j == -1):
                    attrs[w] = ''
                else:
                    attrs[w[:j]] = w[j+1:]
            r.append((reply, attrs))
            if reply == '!done': return r

    def writeSentence(self, words):
        ret = 0
        for w in words:
            self.writeWord(w)
            ret += 1
        self.writeWord('')
        return ret

    def readSentence(self):
        r = []
        while 1:
            w = self.readWord()
            if w == '': return r
            r.append(w)
            
    def writeWord(self, w):
        print(("<<< " + w))
        self.writeLen(len(w))
        self.writeStr(w)

    def readWord(self):
        ret = self.readStr(self.readLen())
        print((">>> " + ret))
        return ret

    def writeLen(self, l):
        if l < 0x80:
            self.writeStr(chr(l))
        elif l < 0x4000:
            l |= 0x8000
            self.writeStr(chr((l >> 8) & 0xFF))
            self.writeStr(chr(l & 0xFF))
        elif l < 0x200000:
            l |= 0xC00000
            self.writeStr(chr((l >> 16) & 0xFF))
            self.writeStr(chr((l >> 8) & 0xFF))
            self.writeStr(chr(l & 0xFF))
        elif l < 0x10000000:        
            l |= 0xE0000000         
            self.writeStr(chr((l >> 24) & 0xFF))
            self.writeStr(chr((l >> 16) & 0xFF))
            self.writeStr(chr((l >> 8) & 0xFF))
            self.writeStr(chr(l & 0xFF))
        else:                       
            self.writeStr(chr(0xF0))
            self.writeStr(chr((l >> 24) & 0xFF))
            self.writeStr(chr((l >> 16) & 0xFF))
            self.writeStr(chr((l >> 8) & 0xFF))
            self.writeStr(chr(l & 0xFF))

    def readLen(self):              
        c = ord(self.readStr(1))    
        if (c & 0x80) == 0x00:      
            pass                    
        elif (c & 0xC0) == 0x80:    
            c &= ~0xC0              
            c <<= 8                 
            c += ord(self.readStr(1))    
        elif (c & 0xE0) == 0xC0:    
            c &= ~0xE0              
            c <<= 8                 
            c += ord(self.readStr(1))    
            c <<= 8                 
            c += ord(self.readStr(1))    
        elif (c & 0xF0) == 0xE0:    
            c &= ~0xF0              
            c <<= 8                 
            c += ord(self.readStr(1))    
            c <<= 8                 
            c += ord(self.readStr(1))    
            c <<= 8                 
            c += ord(self.readStr(1))    
        elif (c & 0xF8) == 0xF0:    
            c = ord(self.readStr(1))     
            c <<= 8                 
            c += ord(self.readStr(1))    
            c <<= 8                 
            c += ord(self.readStr(1))    
            c <<= 8                 
            c += ord(self.readStr(1))    
        return c                    

    def writeStr(self, str):        
        n = 0;                      
        while n < len(str):         
            r = self.sk.send(bytes(str[n:], 'UTF-8'))
            if r == 0: raise RuntimeError("connection closed by remote end")
            n += r                  

    def readStr(self, length):      
        ret = ''                    
        while len(ret) < length:    
            s = self.sk.recv(length - len(ret)).decode('UTF-8', 'replace')
            if s == '': raise RuntimeError("connection closed by remote end")
            ret += s
        return ret

def main():
    s = None
    for res in socket.getaddrinfo(sys.argv[1], "8728", socket.AF_UNSPEC, socket.SOCK_STREAM):
        af, socktype, proto, canonname, sa = res
        try:
             s = socket.socket(af, socktype, proto)
        except (socket.error, msg):
            s = None
            continue
        try:
            s.connect(sa)
        except (socket.error, msg):
            s.close()
            s = None
            continue
        break
    if s is None:
        print ('could not open socket')
        sys.exit(1)

    apiros = ApiRos(s);
    apiros.login(sys.argv[2], sys.argv[3]);

    inputsentence = []

    while 1:
        r = select.select([s, sys.stdin], [], [], None)
        if s in r[0]:
            # something to read in socket, read sentence
            x = apiros.readSentence()

        if sys.stdin in r[0]:
            # read line from input and strip off newline
            l = sys.stdin.readline()
            l = l[:-1]

            # if empty line, send sentence and start with new
            # otherwise append to input sentence
            if l == '':
                apiros.writeSentence(inputsentence)
                inputsentence = []
            else:
                inputsentence.append(l)

if __name__ == '__main__':
    main()

file

|api client in python3

See also

API