]> git.lizzy.rs Git - plan9front.git/blobdiff - sys/src/cmd/cwfs/auth.c
merge
[plan9front.git] / sys / src / cmd / cwfs / auth.c
index a7726a4a7f6993cec53218c4d197baa5e0d9cb53..e3d51be7e383d4ff6d4d9959ac4509c76c0aac8f 100644 (file)
@@ -16,7 +16,6 @@ nvrgetconfig(void)
 /*
  * we shouldn't be writing nvram any more.
  * the secstore/config field is now just secstore key.
- * we still use authid, authdom and machkey for authentication.
  */
 
 int
@@ -25,16 +24,18 @@ nvrcheck(void)
        uchar csum;
 
        if (readnvram(&nvr, NVread) < 0) {
-               print("nvrcheck: can't read nvram\n");
+               fprint(2, "nvrcheck: can't read nvram\n");
                return 1;
        } else
                gotnvr = 1;
-       print("nvr read\n");
+
+       if(chatty)
+               print("nvr read\n");
 
        csum = nvcsum(nvr.machkey, sizeof nvr.machkey);
        if(csum != nvr.machsum) {
-               print("\n\n ** NVR key checksum is incorrect  **\n");
-               print(" ** set password to allow attaches **\n\n");
+               fprint(2, "\n\n ** NVR key checksum is incorrect  **\n");
+               fprint(2, " ** set password to allow attaches **\n\n");
                memset(nvr.machkey, 0, sizeof nvr.machkey);
                return 1;
        }
@@ -84,161 +85,103 @@ conslock(void)
        return 1;
 }
 
-/* authentication structure */
-struct Auth
-{
-       int     inuse;
-       char    uname[NAMELEN]; /* requestor's remote user name */
-       char    aname[NAMELEN]; /* requested aname */
-       Userid  uid;            /* uid decided on */
-       AuthRpc *rpc;
-};
-
-Auth*  auths;
-Lock   authlock;
-
-void
-authinit(void)
-{
-       auths = malloc(conf.nauth * sizeof(*auths));
-}
+static char *keyspec = "proto=p9any role=server";
 
-static int
-failure(Auth *s, char *why)
+void*
+authnew(void)
 {
        AuthRpc *rpc;
-
-       if(why && *why)print("authentication failed: %s: %r\n", why);
-       s->uid = -1;
-       if(rpc = s->rpc){
-               s->rpc = 0;
-               auth_freerpc(rpc);
+       int fd;
+
+       if(access("/mnt/factotum", 0) < 0)
+               if((fd = open("/srv/factotum", ORDWR)) >= 0)
+                       mount(fd, -1, "/mnt", MBEFORE, "");
+       if((fd = open("/mnt/factotum/rpc", ORDWR)) < 0)
+               return nil;
+       if((rpc = auth_allocrpc(fd)) == nil){
+               close(fd);
+               return nil;
        }
-       return -1;
-}
-
-Auth*
-authnew(char *uname, char *aname)
-{
-       static int si = 0;
-       int afd, i, nwrap;
-       Auth *s;
-
-       i = si;
-       nwrap = 0;
-       for(;;){
-               if(i < 0 || i >= conf.nauth){
-                       if(++nwrap > 1)
-                               return nil;
-                       i = 0;
-               }
-               s = &auths[i++];
-               if(s->inuse)
-                       continue;
-               lock(&authlock);
-               if(s->inuse == 0){
-                       s->inuse = 1;
-                       strncpy(s->uname, uname, NAMELEN-1);
-                       strncpy(s->aname, aname, NAMELEN-1);
-                       failure(s, "");
-                       si = i;
-                       unlock(&authlock);
-                       break;
-               }
-               unlock(&authlock);
-       }
-       if((afd = open("/mnt/factotum/rpc", ORDWR)) < 0){
-               failure(s, "open /mnt/factotum/rpc");
-               return s;
-       }
-       if((s->rpc = auth_allocrpc(afd)) == 0){
-               failure(s, "auth_allocrpc");
-               close(afd);
-               return s;
+       if(auth_rpc(rpc, "start", keyspec, strlen(keyspec)) != ARok){
+               authfree(rpc);
+               return nil;
        }
-       if(auth_rpc(s->rpc, "start", "proto=p9any role=server", 23) != ARok)
-               failure(s, "auth_rpc: start");
-       return s;
+       return rpc;
 }
 
 void
-authfree(Auth *s)
+authfree(void *auth)
 {
-       if(s){
-               failure(s, "");
-               s->inuse = 0;
+       AuthRpc *rpc;
+
+       if(rpc = auth){
+               close(rpc->afd);
+               auth_freerpc(rpc);
        }
 }
 
 int
-authread(File* file, uchar* data, int n)
+authread(File *file, uchar *data, int count)
 {
        AuthInfo *ai;
-       Auth *s;
+       AuthRpc *rpc;
+       Chan *chan;
 
-       s = file->auth;
-       if(s == nil)
-               return -1;
-       if(s->rpc == nil)
+       chan = file->cp;
+       if((rpc = file->auth) == nil){
+               snprint(chan->err, sizeof(chan->err),
+                       "not an auth fid");
                return -1;
-       switch(auth_rpc(s->rpc, "read", nil, 0)){
+       }
+
+       switch(auth_rpc(rpc, "read", nil, 0)){
        default:
-               failure(s, "auth_rpc: read");
-               break;
+               snprint(chan->err, sizeof(chan->err),
+                       "authread: auth protocol not finished");
+               return -1;
        case ARdone:
-               if((ai = auth_getinfo(s->rpc)) == nil){
-                       failure(s, "auth_getinfo failed");
-                       break;
-               }
-               if(ai->cuid == nil || *ai->cuid == '\0'){
-                       failure(s, "auth with no cuid");
+               if((ai = auth_getinfo(rpc)) == nil)
+                       goto Phase;
+               file->uid = strtouid(ai->cuid);
+               if(file->uid < 0){
+                       snprint(chan->err, sizeof(chan->err),
+                               "unknown user '%s'", ai->cuid);
                        auth_freeAI(ai);
-                       break;
+                       return -1;
                }
-               failure(s, "");
-               s->uid = strtouid(ai->cuid);
                auth_freeAI(ai);
                return 0;
        case ARok:
-               if(n < s->rpc->narg)
-                       break;
-               memmove(data, s->rpc->arg, s->rpc->narg);
-               return s->rpc->narg;
+               if(count < rpc->narg){
+                       snprint(chan->err, sizeof(chan->err),
+                               "not enough data in auth read");
+                       return -1;
+               }
+               memmove(data, rpc->arg, rpc->narg);
+               return rpc->narg;
+       case ARphase:
+       Phase:
+               rerrstr(chan->err, sizeof(chan->err));
+               return -1;
        }
-       return -1;
 }
 
 int
-authwrite(File* file, uchar *data, int n)
+authwrite(File *file, uchar *data, int count)
 {
-       Auth *s;
+       AuthRpc *rpc;
+       Chan *chan;
 
-       s = file->auth;
-       if(s == nil)
-               return -1;
-       if(s->rpc == nil)
+       chan = file->cp;
+       if((rpc = file->auth) == nil){
+               snprint(chan->err, sizeof(chan->err),
+                       "not an auth fid");
                return -1;
-       if(auth_rpc(s->rpc, "write", data, n) != ARok){
-               failure(s, "auth_rpc: write");
+       }
+       if(auth_rpc(rpc, "write", data, count) != ARok){
+               rerrstr(chan->err, sizeof(chan->err));
                return -1;
        }
-       return n;
+       return count;
 }
 
-int
-authuid(Auth* s)
-{
-       return s->uid;
-}
-
-char*
-authaname(Auth* s)
-{
-       return s->aname;
-}
-
-char*
-authuname(Auth* s)
-{
-       return s->uname;
-}