1993/0408/port/auth.c (diff list | history)

1993/0407/sys/src/9/port/auth.c:19,24 – 1993/0408/sys/src/9/port/auth.c:19,25 (short | long | prev | next)
1993/0330		struct Session { Lock;
1993/0408		Lock send;
1993/0330		Crypt *cache; /* cache of tickets */ char cchal[CHALLEN]; /* client challenge */ char schal[CHALLEN]; /* server challenge */
1993/0407/sys/src/9/port/auth.c:25,30 – 1993/0408/sys/src/9/port/auth.c:26,32
1993/0330		char authid[NAMELEN]; /* server encryption uid */ char authdom[DOMLEN]; /* server encryption domain */ ulong cid; /* challenge id */
1993/0408		int valid;
1993/0330		}; struct
1993/0407/sys/src/9/port/auth.c:109,129 – 1993/0408/sys/src/9/port/auth.c:111,134
1993/0330		nexterror(); }
1993/0407		/* * if two processes get here at the same * time with no session exchanged, we have * a race. */
1993/0408		/* add a session structure to the channel if it has none */ lock(c);
1993/0330		s = c->session; if(s == 0){
1993/0407		/* * no session exchanged yet */
1993/0330		s = malloc(sizeof(Session)); if(s == 0)
1993/0408		if(s == 0){ unlock(c);
1993/0330		error(Enomem); memset(s, 0, sizeof(Session));
1993/0408		} c->session = s; } unlock(c);
1993/0407
1993/0408		/* back off if someone else is doing an fsession */ while(!canlock(&s->send)) sched(); if(s->valid == 0){
1993/0407		/* * Exchange a session message with the server. * If an error occurs reading or writing,
1993/0407/sys/src/9/port/auth.c:144,150 – 1993/0408/sys/src/9/port/auth.c:149,155
1993/0407		n = (*devtab[c->type].read)(c, buf, sizeof buf, 0); poperror(); if(convM2S(buf, &f, n) == 0){ free(s);
1993/0408		unlock(s);
1993/0407		error(Emountrpc); } switch(f.type){
1993/0407/sys/src/9/port/auth.c:154,168 – 1993/0408/sys/src/9/port/auth.c:159,174
1993/0407		memmove(s->authdom, f.authdom, DOMLEN); break; case Rerror: free(s);
1993/0408		unlock(s);
1993/0407		error(f.ename); default: free(s);
1993/0408		unlock(s);
1993/0407		error(Emountrpc); }
1993/0330		} c->session = s;
1993/0408		s->valid = 1;
1993/0330		}
1993/0408		unlock(&s->send);
1993/0330		/* * If server requires no ticket, or user is "none", or a ticket
1993/0407/sys/src/9/port/auth.c:169,186 – 1993/0408/sys/src/9/port/auth.c:175,196
1993/0330		* is already cached, zero the request type */ tr.type = AuthTreq; if(strcmp(u->p->user, "none") == 0 || c->session->authid[0] == 0)
1993/0408		if(strcmp(u->p->user, "none") == 0 || s->authid[0] == 0)
1993/0330		tr.type = 0; else for(cp = s->cache; cp; cp = cp->next) if(strcmp(cp->t.cuid, u->p->user) == 0){ tr.type = 0; break; }
1993/0408		else{ lock(s); for(cp = s->cache; cp; cp = cp->next) if(strcmp(cp->t.cuid, u->p->user) == 0){ tr.type = 0; break; } unlock(s); }
1993/0330		/* create ticket request */ memmove(tr.chal, c->session->schal, CHALLEN); memmove(tr.authid, c->session->authid, NAMELEN); memmove(tr.authdom, c->session->authdom, DOMLEN);
1993/0408		memmove(tr.chal, s->schal, CHALLEN); memmove(tr.authid, s->authid, NAMELEN); memmove(tr.authdom, s->authdom, DOMLEN);
1993/0330		memmove(tr.uid, u->p->user, NAMELEN); memmove(tr.hostid, eve, NAMELEN); convTR2M(&tr, (char*)arg[1]);