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Diffstat (limited to 'nis/nis_table.c')
-rw-r--r--nis/nis_table.c399
1 files changed, 239 insertions, 160 deletions
diff --git a/nis/nis_table.c b/nis/nis_table.c
index ed4b3740dd..e0885ca024 100644
--- a/nis/nis_table.c
+++ b/nis/nis_table.c
@@ -110,6 +110,40 @@ __create_ib_request (const_nis_name name, u_long flags)
return ibreq;
}
+static struct timeval RPCTIMEOUT = {10, 0};
+
+static char *
+__get_tablepath (char *name, dir_binding *bptr)
+{
+ enum clnt_stat result;
+ nis_result *res = calloc (1, sizeof (nis_result));
+ struct ns_request req;
+
+ if (res == NULL)
+ return NULL;
+
+ req.ns_name = name;
+ req.ns_object.ns_object_len = 0;
+ req.ns_object.ns_object_val = NULL;
+
+ result = clnt_call (bptr->clnt, NIS_LOOKUP, (xdrproc_t) _xdr_ns_request,
+ (caddr_t) &req, (xdrproc_t) _xdr_nis_result,
+ (caddr_t) res, RPCTIMEOUT);
+
+ if (result == RPC_SUCCESS && NIS_RES_STATUS (res) == NIS_SUCCESS &&
+ __type_of (NIS_RES_OBJECT (res)) == NIS_TABLE_OBJ)
+ {
+ char *cptr = strdup (NIS_RES_OBJECT (res)->TA_data.ta_path);
+ nis_freeresult (res);
+ return cptr;
+ }
+ else
+ {
+ nis_freeresult (res);
+ return strdup ("");
+ }
+}
+
nis_result *
nis_list (const_nis_name name, u_long flags,
int (*callback) (const_nis_name name,
@@ -120,12 +154,16 @@ nis_list (const_nis_name name, u_long flags,
nis_result *res = NULL;
ib_request *ibreq;
int status;
+ enum clnt_stat clnt_status;
int count_links = 0; /* We will only follow NIS_MAXLINKS links! */
int done = 0;
nis_name *names;
nis_name namebuf[2] = {NULL, NULL};
int name_nr = 0;
nis_cb *cb = NULL;
+ char *tableptr, *tablepath = NULL;
+ int have_tablepath = 0;
+ int first_try = 0; /* Do we try the old binding at first ? */
res = calloc (1, sizeof (nis_result));
if (res == NULL)
@@ -164,189 +202,230 @@ nis_list (const_nis_name name, u_long flags,
cb = NULL;
- if (flags & FOLLOW_PATH || flags & ALL_RESULTS)
+ while (!done)
{
- nis_result *lres;
- u_long newflags = flags & ~FOLLOW_PATH & ~ALL_RESULTS;
- char table_path[NIS_MAXPATH + 3];
- char *ntable, *p;
- u_long done = 0, failures = 0;
-
- while (names[name_nr] != NULL && !done)
- {
- lres = nis_lookup (names[name_nr], newflags | NO_AUTHINFO);
- if (lres == NULL || NIS_RES_STATUS (lres) != NIS_SUCCESS)
- {
- NIS_RES_STATUS (res) = NIS_RES_STATUS (lres);
- nis_freeresult (lres);
- ++name_nr;
- continue;
- }
-
- /* nis_lookup handles FOLLOW_LINKS,
- so we must have a table object.*/
- if (__type_of (NIS_RES_OBJECT (lres)) != NIS_TABLE_OBJ)
- {
- nis_freeresult (lres);
- NIS_RES_STATUS (res) = NIS_INVALIDOBJ;
- break;
- }
+ dir_binding bptr;
+ directory_obj *dir = NULL;
- /* Save the path, discard everything else. */
- p = __stpncpy (table_path, names[name_nr], NIS_MAXPATH);
- *p++ = ':';
- p = __stpncpy (p, NIS_RES_OBJECT (lres)->TA_data.ta_path,
- NIS_MAXPATH - (p - table_path));
- *p = '\0';
- nis_freeresult (lres);
- free (res);
- res = NULL;
+ memset (res, '\0', sizeof (nis_result));
- p = table_path;
+ status = __nisfind_server (ibreq->ibr_name, &dir);
+ if (status != NIS_SUCCESS)
+ {
+ NIS_RES_STATUS (res) = status;
+ return res;
+ }
- while (((ntable = strsep (&p, ":")) != NULL) && !done)
- {
- char *c;
+ status = __nisbind_create (&bptr, dir->do_servers.do_servers_val,
+ dir->do_servers.do_servers_len, flags);
+ if (status != NIS_SUCCESS)
+ {
+ NIS_RES_STATUS (res) = status;
+ nis_free_directory (dir);
+ return res;
+ }
- if (res != NULL)
- nis_freeresult (res);
+ while (__nisbind_connect (&bptr) != NIS_SUCCESS)
+ if (__nisbind_next (&bptr) != NIS_SUCCESS)
+ {
+ __nisbind_destroy (&bptr);
+ nis_free_directory (dir);
+ NIS_RES_STATUS (res) = NIS_NAMEUNREACHABLE;
+ return res;
+ }
- /* Do the job recursive here! */
- if ((c = strchr(name, ']')) != NULL)
- {
- /* Have indexed name ! */
- int index_len = c - name + 2;
- char buf[index_len + strlen (ntable) + 1];
-
- c = __stpncpy (buf, name, index_len);
- strcpy (c, ntable);
- res = nis_list (buf, newflags, callback,userdata);
- }
- else
- res = nis_list (ntable, newflags, callback, userdata);
- if (res == NULL)
- return NULL;
- switch (NIS_RES_STATUS (res))
- {
- case NIS_SUCCESS:
- case NIS_CBRESULTS:
- if (!(flags & ALL_RESULTS))
- done = 1;
- break;
- case NIS_PARTIAL: /* The table is correct, we doesn't found
- the entry */
- break;
- default:
- if (flags & ALL_RESULTS)
- ++failures;
- else
- done = 1;
- break;
- }
- }
- if (NIS_RES_STATUS (res) == NIS_SUCCESS && failures)
- NIS_RES_STATUS (res) = NIS_S_SUCCESS;
- if (NIS_RES_STATUS (res) == NIS_NOTFOUND && failures)
- NIS_RES_STATUS (res) = NIS_S_NOTFOUND;
- break;
- }
- }
- else
- {
if (callback != NULL)
{
cb = __nis_create_callback (callback, userdata, flags);
ibreq->ibr_cbhost.ibr_cbhost_len = 1;
ibreq->ibr_cbhost.ibr_cbhost_val = cb->serv;
- }
-
- while (!done)
- {
- memset (res, '\0', sizeof (nis_result));
-
- status = __do_niscall (ibreq->ibr_name, NIS_IBLIST,
- (xdrproc_t) _xdr_ib_request,
- (caddr_t) ibreq, (xdrproc_t) _xdr_nis_result,
- (caddr_t) res, flags, cb);
- if (status != NIS_SUCCESS)
- NIS_RES_STATUS (res) = status;
+ }
- switch (NIS_RES_STATUS (res))
- {
- case NIS_PARTIAL:
- case NIS_SUCCESS:
- case NIS_S_SUCCESS:
- if (__type_of (NIS_RES_OBJECT (res)) == NIS_LINK_OBJ &&
- flags & FOLLOW_LINKS) /* We are following links. */
- {
- /* If we hit the link limit, bail. */
- if (count_links > NIS_MAXLINKS)
+ again:
+ clnt_status = clnt_call (bptr.clnt, NIS_IBLIST,
+ (xdrproc_t) _xdr_ib_request, (caddr_t) ibreq,
+ (xdrproc_t) _xdr_nis_result,
+ (caddr_t) res, RPCTIMEOUT);
+
+ if (clnt_status != RPC_SUCCESS)
+ NIS_RES_STATUS (res) = NIS_RPCERROR;
+ else
+ switch (NIS_RES_STATUS (res))
+ { /* start switch */
+ case NIS_PARTIAL:
+ case NIS_SUCCESS:
+ case NIS_S_SUCCESS:
+ if (__type_of (NIS_RES_OBJECT (res)) == NIS_LINK_OBJ &&
+ flags & FOLLOW_LINKS) /* We are following links. */
+ {
+ free (ibreq->ibr_name);
+ /* If we hit the link limit, bail. */
+ if (count_links > NIS_MAXLINKS)
+ {
+ NIS_RES_STATUS (res) = NIS_LINKNAMEERROR;
+ ++done;
+ break;
+ }
+ ++count_links;
+ ibreq->ibr_name =
+ strdup (NIS_RES_OBJECT (res)->LI_data.li_name);
+ if (NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_len)
+ if (ibreq->ibr_srch.ibr_srch_len == 0)
{
- NIS_RES_STATUS (res) = NIS_LINKNAMEERROR;
- ++done;
- break;
+ ibreq->ibr_srch.ibr_srch_len =
+ NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_len;
+ ibreq->ibr_srch.ibr_srch_val =
+ NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_val;
}
- if (count_links)
- free (ibreq->ibr_name);
- ++count_links;
- free (ibreq->ibr_name);
- ibreq->ibr_name =
- strdup (NIS_RES_OBJECT (res)->LI_data.li_name);
- if (NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_len)
- if (ibreq->ibr_srch.ibr_srch_len == 0)
+ nis_freeresult (res);
+ res = calloc (1, sizeof (nis_result));
+ if (res == NULL)
+ {
+ if (have_tablepath)
+ free (tablepath);
+ __nisbind_destroy (&bptr);
+ nis_free_directory (dir);
+ return NULL;
+ }
+ first_try = 1; /* Try at first the old binding */
+ goto again;
+ }
+ else if ((flags & FOLLOW_PATH) &&
+ NIS_RES_STATUS (res) == NIS_PARTIAL)
+ {
+ if (!have_tablepath)
+ {
+ tablepath = __get_tablepath (ibreq->ibr_name, &bptr);
+ tableptr = tablepath;
+ have_tablepath = 1;
+ }
+ if (tableptr == NULL)
+ {
+ ++done;
+ break;
+ }
+ free (ibreq->ibr_name);
+ ibreq->ibr_name = strsep (&tableptr, ":");
+ if (ibreq->ibr_name == NULL || ibreq->ibr_name[0] == '\0')
+ {
+ ibreq->ibr_name = strdup ("");
+ ++done;
+ }
+ else
+ {
+ ibreq->ibr_name = strdup (ibreq->ibr_name);
+ nis_freeresult (res);
+ res = calloc (1, sizeof (nis_result));
+ if (res == NULL)
{
- ibreq->ibr_srch.ibr_srch_len =
- NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_len;
- ibreq->ibr_srch.ibr_srch_val =
- NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_val;
+ if (have_tablepath)
+ free (tablepath);
+ __nisbind_destroy (&bptr);
+ nis_free_directory (dir);
+ return NULL;
}
- nis_freeresult (res);
- res = calloc (1, sizeof (nis_result));
- }
- else
- ++done;
- break;
- case NIS_CBRESULTS:
- /* Calback is handled in nis_call.c (__do_niscall2),
- but we have to change the error code */
- NIS_RES_STATUS (res) = cb->result;
+ first_try = 1;
+ goto again;
+ }
+ }
+ else
++done;
- break;
- case NIS_UNAVAIL:
- /* NIS+ is not installed, or all servers are down. */
- ++done;
- break;
- default:
- /* Try the next domainname if we don't follow a link. */
- if (count_links)
- {
- free (ibreq->ibr_name);
- NIS_RES_STATUS (res) = NIS_LINKNAMEERROR;
- ++done;
- break;
- }
- ++name_nr;
- if (names[name_nr] == NULL)
- {
+ break;
+ case NIS_CBRESULTS:
+ if (cb != NULL)
+ {
+ __nis_do_callback (&bptr, &res->cookie, cb);
+ NIS_RES_STATUS (res) = cb->result;
+
+ if (!(flags & ALL_RESULTS))
++done;
- break;
- }
- ibreq->ibr_name = names[name_nr];
- break;
- }
+ else
+ {
+ if (!have_tablepath)
+ {
+ tablepath = __get_tablepath (ibreq->ibr_name, &bptr);
+ tableptr = tablepath;
+ have_tablepath = 1;
+ }
+ if (tableptr == NULL)
+ {
+ ++done;
+ break;
+ }
+ free (ibreq->ibr_name);
+ ibreq->ibr_name = strsep (&tableptr, ":");
+ if (ibreq->ibr_name == NULL || ibreq->ibr_name[0] == '\0')
+ {
+ ibreq->ibr_name = strdup ("");
+ ++done;
+ }
+ else
+ ibreq->ibr_name = strdup (ibreq->ibr_name);
+ }
+ }
+ break;
+ case NIS_SYSTEMERROR:
+ case NIS_NOSUCHNAME:
+ case NIS_NOT_ME:
+ /* If we had first tried the old binding, do nothing, but
+ get a new binding */
+ if (!first_try)
+ {
+ if (__nisbind_next (&bptr) != NIS_SUCCESS)
+ {
+ ++done;
+ break; /* No more servers to search */
+ }
+ while (__nisbind_connect (&bptr) != NIS_SUCCESS)
+ {
+ if (__nisbind_next (&bptr) != NIS_SUCCESS)
+ {
+ ++done;
+ break; /* No more servers to search */
+ }
+ }
+ goto again;
+ }
+ break;
+ default:
+ if (!first_try)
+ {
+ /* Try the next domainname if we don't follow a link. */
+ if (count_links)
+ {
+ free (ibreq->ibr_name);
+ NIS_RES_STATUS (res) = NIS_LINKNAMEERROR;
+ ++done;
+ break;
+ }
+ ++name_nr;
+ if (names[name_nr] == NULL)
+ {
+ ++done;
+ break;
+ }
+ ibreq->ibr_name = names[name_nr];
+ first_try = 1; /* Try old binding at first */
+ goto again;
+ }
+ break;
+ }
+ first_try = 0;
+
+ if (cb)
+ {
+ __nis_destroy_callback (cb);
+ ibreq->ibr_cbhost.ibr_cbhost_len = 0;
+ ibreq->ibr_cbhost.ibr_cbhost_val = NULL;
}
- } /* End of not FOLLOW_PATH. */
+
+ __nisbind_destroy (&bptr);
+ nis_free_directory (dir);
+ }
if (names != namebuf)
nis_freenames (names);
- if (cb)
- {
- __nis_destroy_callback (cb);
- ibreq->ibr_cbhost.ibr_cbhost_len = 0;
- ibreq->ibr_cbhost.ibr_cbhost_val = NULL;
- }
-
nis_free_request (ibreq);
return res;