1 be8b315d 2004-06-17 devnull #include <u.h>
2 be8b315d 2004-06-17 devnull #include <libc.h>
3 be8b315d 2004-06-17 devnull #include <auth.h>
4 be8b315d 2004-06-17 devnull #include <authsrv.h>
5 be8b315d 2004-06-17 devnull #include "authlocal.h"
7 be8b315d 2004-06-17 devnull Chalstate*
8 be8b315d 2004-06-17 devnull auth_challenge(char *fmt, ...)
11 be8b315d 2004-06-17 devnull va_list arg;
12 be8b315d 2004-06-17 devnull Chalstate *c;
14 be8b315d 2004-06-17 devnull quotefmtinstall(); /* just in case */
15 be8b315d 2004-06-17 devnull va_start(arg, fmt);
16 be8b315d 2004-06-17 devnull p = vsmprint(fmt, arg);
17 be8b315d 2004-06-17 devnull va_end(arg);
18 be8b315d 2004-06-17 devnull if(p == nil)
19 be8b315d 2004-06-17 devnull return nil;
21 be8b315d 2004-06-17 devnull c = mallocz(sizeof(*c), 1);
22 be8b315d 2004-06-17 devnull if(c == nil){
24 be8b315d 2004-06-17 devnull return nil;
27 be8b315d 2004-06-17 devnull if((c->afd = open("/mnt/factotum/rpc", ORDWR)) < 0){
29 be8b315d 2004-06-17 devnull auth_freechal(c);
31 be8b315d 2004-06-17 devnull return nil;
34 be8b315d 2004-06-17 devnull if((c->rpc=auth_allocrpc(c->afd)) == nil
35 be8b315d 2004-06-17 devnull || auth_rpc(c->rpc, "start", p, strlen(p)) != ARok
36 be8b315d 2004-06-17 devnull || auth_rpc(c->rpc, "read", nil, 0) != ARok)
37 be8b315d 2004-06-17 devnull goto Error;
39 be8b315d 2004-06-17 devnull if(c->rpc->narg > sizeof(c->chal)-1){
40 be8b315d 2004-06-17 devnull werrstr("buffer too small for challenge");
41 be8b315d 2004-06-17 devnull goto Error;
43 be8b315d 2004-06-17 devnull memmove(c->chal, c->rpc->arg, c->rpc->narg);
44 be8b315d 2004-06-17 devnull c->nchal = c->rpc->narg;
46 be8b315d 2004-06-17 devnull return c;
49 be8b315d 2004-06-17 devnull AuthInfo*
50 be8b315d 2004-06-17 devnull auth_response(Chalstate *c)
53 be8b315d 2004-06-17 devnull AuthInfo *ai;
55 be8b315d 2004-06-17 devnull ai = nil;
56 be8b315d 2004-06-17 devnull if(c->afd < 0){
57 be8b315d 2004-06-17 devnull werrstr("auth_response: connection not open");
58 be8b315d 2004-06-17 devnull return nil;
60 be8b315d 2004-06-17 devnull if(c->resp == nil){
61 be8b315d 2004-06-17 devnull werrstr("auth_response: nil response");
62 be8b315d 2004-06-17 devnull return nil;
64 be8b315d 2004-06-17 devnull if(c->nresp == 0){
65 be8b315d 2004-06-17 devnull werrstr("auth_response: unspecified response length");
66 be8b315d 2004-06-17 devnull return nil;
69 be8b315d 2004-06-17 devnull if(c->user){
70 be8b315d 2004-06-17 devnull if(auth_rpc(c->rpc, "write", c->user, strlen(c->user)) != ARok){
72 be8b315d 2004-06-17 devnull * if this fails we're out of phase with factotum.
73 be8b315d 2004-06-17 devnull * give up.
75 be8b315d 2004-06-17 devnull goto Out;
79 be8b315d 2004-06-17 devnull if(auth_rpc(c->rpc, "write", c->resp, c->nresp) != ARok){
81 be8b315d 2004-06-17 devnull * don't close the connection -- maybe we'll try again.
83 be8b315d 2004-06-17 devnull return nil;
86 be8b315d 2004-06-17 devnull switch(ret = auth_rpc(c->rpc, "read", nil, 0)){
87 be8b315d 2004-06-17 devnull case ARok:
89 be8b315d 2004-06-17 devnull werrstr("factotum protocol botch %d %s", ret, c->rpc->ibuf);
91 be8b315d 2004-06-17 devnull case ARdone:
92 be8b315d 2004-06-17 devnull ai = auth_getinfo(c->rpc);
97 be8b315d 2004-06-17 devnull close(c->afd);
98 be8b315d 2004-06-17 devnull auth_freerpc(c->rpc);
99 be8b315d 2004-06-17 devnull c->afd = -1;
100 be8b315d 2004-06-17 devnull c->rpc = nil;
101 be8b315d 2004-06-17 devnull return ai;
105 be8b315d 2004-06-17 devnull auth_freechal(Chalstate *c)
107 be8b315d 2004-06-17 devnull if(c == nil)
110 be8b315d 2004-06-17 devnull if(c->afd >= 0)
111 be8b315d 2004-06-17 devnull close(c->afd);
112 be8b315d 2004-06-17 devnull if(c->rpc != nil)
113 be8b315d 2004-06-17 devnull auth_freerpc(c->rpc);
115 be8b315d 2004-06-17 devnull memset(c, 0xBB, sizeof(*c));
116 be8b315d 2004-06-17 devnull free(c);