diff options
Diffstat (limited to 'nis/nis_call.c')
| -rw-r--r-- | nis/nis_call.c | 211 |
1 files changed, 189 insertions, 22 deletions
diff --git a/nis/nis_call.c b/nis/nis_call.c index a92f1445f4..17f67abbde 100644 --- a/nis/nis_call.c +++ b/nis/nis_call.c @@ -160,36 +160,19 @@ __nis_dobind (const nis_server *server, u_long flags) } nis_error -__do_niscall (const nis_server *serv, int serv_len, u_long prog, - xdrproc_t xargs, caddr_t req, xdrproc_t xres, caddr_t resp, - u_long flags) +__do_niscall2 (const nis_server *server, u_int server_len, u_long prog, + xdrproc_t xargs, caddr_t req, xdrproc_t xres, caddr_t resp, + u_long flags) { CLIENT *clnt; - directory_obj *dir = NULL; - const nis_server *server; int try, result; - unsigned int server_len; - if (serv == NULL || serv_len == 0) - { - dir = readColdStartFile (); - if (dir == NULL) /* No /var/nis/NIS_COLD_START -> no NIS+ installed */ - return NIS_UNAVAIL; - server = dir->do_servers.do_servers_val; - server_len = dir->do_servers.do_servers_len; - } - else - { - server = serv; - server_len = serv_len; - } + try = 0; + result = NIS_NAMEUNREACHABLE; if (((flags & MASTER_ONLY) == MASTER_ONLY) && server_len > 1) server_len = 1; /* The first entry is the master */ - try = 0; - result = NIS_NAMEUNREACHABLE; - while (try < MAXTRIES && result != RPC_SUCCESS) { unsigned int i; @@ -215,7 +198,191 @@ __do_niscall (const nis_server *serv, int serv_len, u_long prog, } } + return result; +} + +static directory_obj * +dir_lookup (const_nis_name name, nis_server *serv, u_long flags) +{ + CLIENT *clnt; + int try, result; + nis_result *res; + struct ns_request req; + directory_obj *dir; + + res = calloc (1, sizeof (nis_result)); + req.ns_name = (char *)name; + req.ns_object.ns_object_len = 0; + req.ns_object.ns_object_val = NULL; + try = 0; + result = NIS_NAMEUNREACHABLE; + + while (try < MAXTRIES && result != RPC_SUCCESS) + { + if ((clnt = __nis_dobind (serv, flags)) == NULL) + continue; + + result = clnt_call (clnt, NIS_LOOKUP, (xdrproc_t) xdr_ns_request, + (caddr_t) &req, (xdrproc_t) xdr_nis_result, + (caddr_t) res, TIMEOUT); + + if (result != RPC_SUCCESS) + { + clnt_perror (clnt, "do_niscall: clnt_call"); + clnt_destroy (clnt); + result = NIS_RPCERROR; + } + else + clnt_destroy (clnt); + } + if (result != RPC_SUCCESS || res->status != NIS_SUCCESS) + return NULL; + + dir = nis_clone_directory (&res->objects.objects_val->DI_data, NULL); + nis_freeresult (res); + + return dir; +} + +static directory_obj * +rec_dirsearch (const_nis_name name, directory_obj *dir, u_long flags) +{ + char domain [strlen (name) + 3]; + + nis_domain_of_r (name, domain, sizeof (domain)); + if (strncmp (domain, "org_dir.", 8) == 0) + { + char tmp[strlen (name) + 3]; + + nis_domain_of_r (domain, tmp, sizeof (tmp)); + strcpy (domain, tmp); + } + else + if (strncmp (domain, "groups_dir.", 11) == 0) + { + char tmp[strlen (name) + 3]; + + nis_domain_of_r (domain, tmp, sizeof (tmp)); + strcpy (domain, tmp); + } + else + { + /* We have no grous_dir or org_dir, so try the complete name */ + strcpy (domain, name); + } + + switch (nis_dir_cmp (domain, dir->do_name)) + { + case SAME_NAME: + return dir; + case NOT_SEQUENTIAL: + /* NOT_SEQUENTIAL means, go one up and try it there ! */ + case HIGHER_NAME: + { /* We need data from a parent domain */ + directory_obj *obj; + char ndomain [strlen (name) + 3]; + + nis_domain_of_r (dir->do_name, ndomain, sizeof (ndomain)); + + /* The root server of our domain is a replica of the parent + domain ! (Now I understand why a root server must be a + replica of the parent domain) */ + obj = dir_lookup (ndomain, dir->do_servers.do_servers_val, + flags); + if (obj != NULL) + { + /* We have found a NIS+ server serving ndomain, now + let us search for "name" */ + nis_free_directory (dir); + return rec_dirsearch (name, obj, flags); + } + else + { + /* Ups, very bad. Are we already the root server ? */ + nis_free_directory (dir); + return NULL; + } + } + break; + case LOWER_NAME: + { + directory_obj *obj; + char leaf [strlen (name) + 3]; + char ndomain [strlen (name) + 3]; + u_int i; + + do + { + if (strlen (domain) == 0) + { + nis_free_directory (dir); + return NULL; + } + nis_leaf_of_r (domain, leaf, sizeof (leaf)); + nis_domain_of_r (domain, ndomain, sizeof (ndomain)); + strcpy (domain, ndomain); + } + while (nis_dir_cmp (domain, dir->do_name) != SAME_NAME); + strcat (leaf, "."); + strcat (leaf, domain); + + for (i = 0; i < dir->do_servers.do_servers_len; ++i) + { + obj = dir_lookup (leaf, &dir->do_servers.do_servers_val[i], + flags); + if (obj != NULL) + { + /* We have found a NIS+ server serving ndomain, now + let us search for "name" */ + nis_free_directory (dir); + return rec_dirsearch (name, obj, flags); + } + } + } + break; + case BAD_NAME: + nis_free_directory (dir); + return NULL; + } + nis_free_directory (dir); + return NULL; +} + +nis_error +__do_niscall (const_nis_name name, u_long prog, xdrproc_t xargs, + caddr_t req, xdrproc_t xres, caddr_t resp, u_long flags) +{ + nis_error result; + directory_obj *dir = NULL; + const nis_server *server; + u_int server_len; + + + dir = readColdStartFile (); + if (dir == NULL) /* No /var/nis/NIS_COLD_START -> no NIS+ installed */ + return NIS_UNAVAIL; + + if (name != NULL) + { + dir = rec_dirsearch (name, dir, flags); + if (dir == NULL) + { + if (nis_dir_cmp (nis_local_directory(), name) == NOT_SEQUENTIAL) + return NIS_NAMEUNREACHABLE; + else + return NIS_NOTFOUND; + } + } + server = dir->do_servers.do_servers_val; + server_len = dir->do_servers.do_servers_len; + + if (((flags & MASTER_ONLY) == MASTER_ONLY) && server_len > 1) + server_len = 1; /* The first entry is the master */ + + result = __do_niscall2 (server, server_len, prog, xargs, req, xres, + resp, flags); if (dir != NULL) nis_free_directory (dir); + return result; } |