1992/0529/port/devip.c (diff list | history)

1992/0528/sys/src/9/port/devip.c:38,47 – 1992/0529/sys/src/9/port/devip.c:38,53 (short | long | prev | next)
1991/1012		void iloput(Queue *, Block *); void ilopen(Queue *, Stream *); void ilclose(Queue *);
1992/0529		/* BSD authentication Protocol checker */ void bsdiput(Queue *, Block *); void bsdoput(Queue *, Block *); void bsdopen(Queue *, Stream *); void bsdclose(Queue *);
1991/0424
1992/0318		Qinfo tcpinfo = { tcpstiput, tcpstoput, tcpstopen, tcpstclose, "tcp", 0, 1 };
1991/0424		Qinfo udpinfo = { udpstiput, udpstoput, udpstopen, udpstclose, "udp" };
1991/1012		Qinfo ilinfo = { iliput, iloput, ilopen, ilclose, "il" };
1992/0529		Qinfo bsdinfo = { bsdiput, bsdoput, bsdopen, bsdclose, "bsd", 0, 1 };
1991/0424
1991/1012		Qinfo *protocols[] = { &tcpinfo, &udpinfo, &ilinfo, 0 };
1991/0424
1992/0528/sys/src/9/port/devip.c:274,279 – 1992/0529/sys/src/9/port/devip.c:280,297
1991/1114		else if(cp->stproto == &ilinfo)
1991/1124		ilstart(cp, IL_ACTIVE, 20);
1991/1114
1992/0529		/* * stupid hack for BSD port's 512, 513, & 514 * to make it harder for user to lie about his * identity. -- presotto */ switch(cp->pdst){ case 512: case 513: case 514: pushq(c->stream, &bsdinfo); break; }
1991/1024		}
1991/1125		else if(strcmp(field[0], "disconnect") == 0) { if(cp->stproto != &udpinfo)
1992/0528/sys/src/9/port/devip.c:985,988 – 1992/0529/sys/src/9/port/devip.c:1003,1088
1991/0424		} return 0;
1992/0529		} /* * Fuck me sideways with a bargepole!!! -- philw * * BSD authentication protocol, used on ports 512, 513, & 514. * This makes sure that a user can only write the REAL user id. * * q->ptr is number of nulls seen */ void bsdopen(Queue *q, Stream *s) { RD(q)->ptr = q; WR(q)->ptr = q; } void bsdclose(Queue *q) { Block *bp; bp = allocb(0); bp->type = M_HANGUP; PUTNEXT(q->other, bp); } void bsdiput(Queue *q, Block *bp) { PUTNEXT(q, bp); } void bsdoput(Queue *q, Block *bp) { uchar *luser; uchar *p; Block *nbp; int n; /* just pass it on if we've done authentication */ if(q->ptr == 0 || bp->type != M_DATA){ PUTNEXT(q, bp); return; } /* collect into a single block */ lock(q); if(q->first == 0) q->first = pullup(bp, blen(bp)); else{ nbp = q->first; nbp->next = bp; q->first = pullup(nbp, blen(nbp)); } bp = q->first; if(bp == 0){ unlock(q); bsdclose(q); return; } /* look for 2 nulls to indicate stderr port and local user */ luser = memchr(bp->rptr, 0, BLEN(bp)); if(luser == 0){ unlock(q); return; } luser++; if(memchr(luser, 0, bp->wptr - luser) == 0){ unlock(q); return; } /* if luser is a lie, hangup */ if(memcmp(luser, u->p->user, strlen(u->p->user)+1) != 0) bsdclose(q); /* mark queue as authenticated and pass data to remote side */ q->ptr = 0; q->first = 0; bp->flags |= S_DELIM; PUTNEXT(q, bp); unlock(q);
1991/0424		}