| 1 | ### -*-pyrex-*- |
| 2 | ### |
| 3 | ### Ident client |
| 4 | ### |
| 5 | ### (c) 2005 Straylight/Edgeware |
| 6 | ### |
| 7 | |
| 8 | ###----- Licensing notice --------------------------------------------------- |
| 9 | ### |
| 10 | ### This file is part of the Python interface to mLib. |
| 11 | ### |
| 12 | ### mLib/Python is free software; you can redistribute it and/or modify |
| 13 | ### it under the terms of the GNU General Public License as published by |
| 14 | ### the Free Software Foundation; either version 2 of the License, or |
| 15 | ### (at your option) any later version. |
| 16 | ### |
| 17 | ### mLib/Python is distributed in the hope that it will be useful, |
| 18 | ### but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | ### GNU General Public License for more details. |
| 21 | ### |
| 22 | ### You should have received a copy of the GNU General Public License |
| 23 | ### along with mLib/Python; if not, write to the Free Software Foundation, |
| 24 | ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 25 | |
| 26 | import socket |
| 27 | |
| 28 | cdef _inaddr_frompy(sockaddr_in *sin, addr): |
| 29 | cdef int port |
| 30 | if len(addr) != 2: |
| 31 | raise TypeError, 'want address/port pair' |
| 32 | a = addr[0] |
| 33 | if not inet_aton(a, &sin.sin_addr): |
| 34 | raise TypeError, 'bad IP address' |
| 35 | port = addr[1] |
| 36 | if not (0 <= port < 65536): |
| 37 | raise TypeError, 'port number out of range' |
| 38 | sin.sin_port = htons(port) |
| 39 | |
| 40 | cdef _inaddr_topy(sockaddr_in *sin): |
| 41 | return inet_ntoa(sin.sin_addr), ntohs(sin.sin_port) |
| 42 | |
| 43 | cdef class SelIdentify: |
| 44 | """ |
| 45 | SelIdentify(SK, [userproc = None], [bogusproc = None], |
| 46 | [badproc = None], [errorproc = None],) |
| 47 | |
| 48 | Asynchronously enquire about remote user of socket SK. |
| 49 | """ |
| 50 | cdef ident_request irq |
| 51 | cdef int _activep |
| 52 | cdef readonly localaddr |
| 53 | cdef readonly remoteaddr |
| 54 | cdef _user |
| 55 | cdef _bad |
| 56 | cdef _error |
| 57 | cdef _bogus |
| 58 | def __cinit__(me, sk, userproc = None, bogusproc = None, |
| 59 | badproc = None, errorproc = None, *hunoz, **hukairz): |
| 60 | cdef sockaddr_in s_in, s_out |
| 61 | cdef socklen_t sz_in, sz_out |
| 62 | cdef int fd |
| 63 | if typecheck(sk, socket.SocketType): |
| 64 | fd = sk.fileno() |
| 65 | sz_in = PSIZEOF(&s_in) |
| 66 | sz_out = PSIZEOF(&s_out) |
| 67 | if getsockname(fd, <sockaddr *>&s_in, &sz_in) or \ |
| 68 | getpeername(fd, <sockaddr *>&s_out, &sz_out): |
| 69 | _oserror() |
| 70 | if s_in.sin_family != AF_INET or s_out.sin_family != AF_INET: |
| 71 | raise TypeError, 'must be internet socket' |
| 72 | elif len(sk) != 2: |
| 73 | raise TypeError, 'want pair of addresses' |
| 74 | else: |
| 75 | _inaddr_frompy(&s_in, sk[0]) |
| 76 | _inaddr_frompy(&s_out, sk[1]) |
| 77 | ident(&me.irq, &_sel, &s_in, &s_out, _identfunc, <void *>me) |
| 78 | me.localaddr = _inaddr_topy(&s_in) |
| 79 | me.remoteaddr = _inaddr_topy(&s_out) |
| 80 | me._activep = 1 |
| 81 | me._user = _checkcallable(userproc, 'user proc') |
| 82 | me._bad = _checkcallable(badproc, 'bad proc') |
| 83 | me._error = _checkcallable(errorproc, 'error proc') |
| 84 | me._bogus = _checkcallable(bogusproc, 'bogus proc') |
| 85 | def __dealloc__(me): |
| 86 | if me._activep: |
| 87 | ident_abort(&me.irq) |
| 88 | property activep: |
| 89 | """I.activep -> BOOL: query still in progress?""" |
| 90 | def __get__(me): |
| 91 | return _tobool(me._activep) |
| 92 | property userproc: |
| 93 | """I.userproc -> FUNC: call FUNC(OS, USER) if server replied""" |
| 94 | def __get__(me): |
| 95 | return me._user |
| 96 | def __set__(me, proc): |
| 97 | me._user = _checkcallable(proc, 'user proc') |
| 98 | def __del__(me): |
| 99 | me._user = None |
| 100 | property badproc: |
| 101 | """I.badproc -> FUNC: call FUNC() if server's reply was broken""" |
| 102 | def __get__(me): |
| 103 | return me._bad |
| 104 | def __set__(me, proc): |
| 105 | me._bad = _checkcallable(proc, 'bad proc') |
| 106 | def __del__(me): |
| 107 | me._bad = None |
| 108 | property errorproc: |
| 109 | """I.errorproc -> FUNC: call FUNC(ERR) if server reported error""" |
| 110 | def __get__(me): |
| 111 | return me._error |
| 112 | def __set__(me, proc): |
| 113 | me._error = _checkcallable(proc, 'error proc') |
| 114 | def __del__(me): |
| 115 | me._error = None |
| 116 | property bogusproc: |
| 117 | """I.bogusproc -> FUNC: call FUNC() on failure if no specific handler""" |
| 118 | def __get__(me): |
| 119 | return me._bogus |
| 120 | def __set__(me, proc): |
| 121 | me._bogus = _checkcallable(proc, 'bogus proc') |
| 122 | def __del__(me): |
| 123 | me._bogus = None |
| 124 | def kill(me): |
| 125 | """I.kill(): cancel ident query""" |
| 126 | if not me._activep: |
| 127 | raise ValueError, 'already disabled' |
| 128 | ident_abort(&me.irq) |
| 129 | me._dead() |
| 130 | def _dead(me): |
| 131 | me._activep = 0 |
| 132 | me.dead() |
| 133 | def dead(me): |
| 134 | """I.dead(): called when operation completes or fails""" |
| 135 | pass |
| 136 | def user(me, os, user): |
| 137 | """I.user(OS, USER): called if server returns user name""" |
| 138 | return _maybecall(me._user, (os, user)) |
| 139 | def bad(me): |
| 140 | """I.bad(): called if server's reply is invalid""" |
| 141 | if me._bad is not None: |
| 142 | return me._bad() |
| 143 | return me.bogus() |
| 144 | def error(me, error): |
| 145 | """I.error(ERR): called if server returns an error""" |
| 146 | if me._error is not None: |
| 147 | return me._error(error) |
| 148 | return me.bogus() |
| 149 | def bogus(me): |
| 150 | """I.bogus(): called on failure if there's no more specific handler""" |
| 151 | return _maybecall(me._bogus, ()) |
| 152 | |
| 153 | cdef void _identfunc(ident_reply *i, void *arg): |
| 154 | cdef SelIdentify id |
| 155 | id = <SelIdentify>arg |
| 156 | id._dead() |
| 157 | if i.type == IDENT_BAD: |
| 158 | id.bad() |
| 159 | elif i.type == IDENT_ERROR: |
| 160 | id.error(i.u.error) |
| 161 | elif i.type == IDENT_USERID: |
| 162 | id.user(i.u.userid.os, i.u.userid.user) |
| 163 | |
| 164 | ###----- That's all, folks -------------------------------------------------- |