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-rw-r--r--nis/nis_call.c400
1 files changed, 84 insertions, 316 deletions
diff --git a/nis/nis_call.c b/nis/nis_call.c
index c571e8f367..928053daf5 100644
--- a/nis/nis_call.c
+++ b/nis/nis_call.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997, 1998, 2001, 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
+/* Copyright (C) 1997,1998,2001,2004,2005,2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
@@ -26,11 +25,8 @@
#include <rpc/auth.h>
#include <rpcsvc/nis.h>
#include <sys/socket.h>
-#include <sys/stat.h>
-#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
-#include <bits/libc-lock.h>
#include "nis_xdr.h"
#include "nis_intern.h"
@@ -111,79 +107,10 @@ __nisbind_next (dir_binding *bind)
}
libnsl_hidden_def (__nisbind_next)
-static struct ckey_cache_entry
-{
- struct in_addr inaddr;
- in_port_t port;
- unsigned int protocol;
- des_block ckey;
-} *ckey_cache;
-static size_t ckey_cache_size;
-static size_t ckey_cache_allocated;
-static pid_t ckey_cache_pid;
-static uid_t ckey_cache_euid;
-__libc_lock_define_initialized (static, ckey_cache_lock)
-
-static bool_t
-get_ckey (des_block *ckey, struct sockaddr_in *addr, unsigned int protocol)
-{
- size_t i;
- pid_t pid = getpid ();
- uid_t euid = geteuid ();
- bool_t ret = FALSE;
-
- __libc_lock_lock (ckey_cache_lock);
-
- if (ckey_cache_pid != pid || ckey_cache_euid != euid)
- {
- ckey_cache_size = 0;
- ckey_cache_pid = pid;
- ckey_cache_euid = euid;
- }
-
- for (i = 0; i < ckey_cache_size; ++i)
- if (ckey_cache[i].port == addr->sin_port
- && ckey_cache[i].protocol == protocol
- && memcmp (&ckey_cache[i].inaddr, &addr->sin_addr,
- sizeof (addr->sin_addr)) == 0)
- {
- *ckey = ckey_cache[i].ckey;
- ret = TRUE;
- break;
- }
-
- if (!ret && key_gendes (ckey) >= 0)
- {
- ret = TRUE;
- /* Don't grow the cache indefinitely. */
- if (ckey_cache_size == 256)
- ckey_cache_size = 0;
- if (ckey_cache_size == ckey_cache_allocated)
- {
- size_t size = ckey_cache_allocated ? ckey_cache_allocated * 2 : 16;
- struct ckey_cache_entry *new_cache
- = realloc (ckey_cache, size * sizeof (*ckey_cache));
- if (new_cache != NULL)
- {
- ckey_cache = new_cache;
- ckey_cache_allocated = size;
- }
- }
- ckey_cache[ckey_cache_size].inaddr = addr->sin_addr;
- ckey_cache[ckey_cache_size].port = addr->sin_port;
- ckey_cache[ckey_cache_size].protocol = protocol;
- ckey_cache[ckey_cache_size++].ckey = *ckey;
- }
-
- __libc_lock_unlock (ckey_cache_lock);
- return ret;
-}
-
nis_error
__nisbind_connect (dir_binding *dbp)
{
nis_server *serv;
- u_short port;
if (dbp == NULL)
return NIS_FAIL;
@@ -201,12 +128,9 @@ __nisbind_connect (dir_binding *dbp)
/* Check, if the host is online and rpc.nisd is running. Much faster
then the clnt*_create functions: */
- port = __pmap_getnisport (&dbp->addr, NIS_PROG, NIS_VERSION,
- dbp->use_udp ? IPPROTO_UDP : IPPROTO_TCP);
- if (port == 0)
+ if (__pmap_getnisport (&dbp->addr, NIS_PROG, NIS_VERSION, IPPROTO_UDP) == 0)
return NIS_RPCERROR;
- dbp->addr.sin_port = htons (port);
dbp->socket = RPC_ANYSOCK;
if (dbp->use_udp)
dbp->clnt = clntudp_create (&dbp->addr, NIS_PROG, NIS_VERSION,
@@ -229,16 +153,17 @@ __nisbind_connect (dir_binding *dbp)
{
char netname[MAXNETNAMELEN + 1];
char *p;
- des_block ckey;
- p = stpcpy (netname, "unix@");
+ p = stpcpy (netname, "unix.");
strncpy (p, serv->name, MAXNETNAMELEN - 5);
netname[MAXNETNAMELEN] = '\0';
- dbp->clnt->cl_auth = NULL;
- if (get_ckey (&ckey, &dbp->addr,
- dbp->use_udp ? IPPROTO_UDP : IPPROTO_TCP))
- dbp->clnt->cl_auth =
- authdes_pk_create (netname, &serv->pkey, 300, NULL, &ckey);
+ // XXX What is this supposed to do? If we really want to replace
+ // XXX the first dot, then we might as well use unix@ as the
+ // XXX prefix string. --drepper
+ p = strchr (netname, '.');
+ *p = '@';
+ dbp->clnt->cl_auth =
+ authdes_pk_create (netname, &serv->pkey, 300, NULL, NULL);
if (!dbp->clnt->cl_auth)
dbp->clnt->cl_auth = authunix_create_default ();
}
@@ -252,8 +177,7 @@ libnsl_hidden_def (__nisbind_connect)
nis_error
__nisbind_create (dir_binding *dbp, const nis_server *serv_val,
- unsigned int serv_len, unsigned int server_used,
- unsigned int current_ep, unsigned int flags)
+ unsigned int serv_len, unsigned int flags)
{
dbp->clnt = NULL;
@@ -279,16 +203,8 @@ __nisbind_create (dir_binding *dbp, const nis_server *serv_val,
dbp->trys = 1;
dbp->class = -1;
- if (server_used == ~0)
- {
- if (__nis_findfastest (dbp) < 1)
- return NIS_NAMEUNREACHABLE;
- }
- else
- {
- dbp->server_used = server_used;
- dbp->current_ep = current_ep;
- }
+ if (__nis_findfastest (dbp) < 1)
+ return NIS_NAMEUNREACHABLE;
return NIS_SUCCESS;
}
@@ -390,7 +306,7 @@ __do_niscall2 (const nis_server *server, u_int server_len, u_long prog,
if (flags & MASTER_ONLY)
server_len = 1;
- status = __nisbind_create (&dbp, server, server_len, ~0, ~0, flags);
+ status = __nisbind_create (&dbp, server, server_len, flags);
if (status != NIS_SUCCESS)
return status;
@@ -422,7 +338,9 @@ rec_dirsearch (const_nis_name name, directory_obj *dir, nis_error *status)
case HIGHER_NAME:
{ /* We need data from a parent domain */
directory_obj *obj;
- const char *ndomain = __nis_domain_of (dir->do_name);
+ char ndomain[strlen (dir->do_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
@@ -466,7 +384,7 @@ rec_dirsearch (const_nis_name name, directory_obj *dir, nis_error *status)
size_t namelen = strlen (name);
char leaf[namelen + 3];
char domain[namelen + 3];
- const char *ndomain;
+ char ndomain[namelen + 3];
char *cp;
strcpy (domain, name);
@@ -479,8 +397,8 @@ rec_dirsearch (const_nis_name name, directory_obj *dir, nis_error *status)
return NULL;
}
nis_leaf_of_r (domain, leaf, sizeof (leaf));
- ndomain = __nis_domain_of (domain);
- memmove (domain, ndomain, strlen (ndomain) + 1);
+ nis_domain_of_r (domain, ndomain, sizeof (ndomain));
+ strcpy (domain, ndomain);
}
while (nis_dir_cmp (domain, dir->do_name) != SAME_NAME);
@@ -533,16 +451,29 @@ rec_dirsearch (const_nis_name name, directory_obj *dir, nis_error *status)
/* We try to query the current server for the searched object,
maybe he know about it ? */
static directory_obj *
-first_shoot (const_nis_name name, directory_obj *dir)
+first_shoot (const_nis_name name, int search_parent_first, directory_obj *dir)
{
directory_obj *obj = NULL;
fd_result *fd_res;
XDR xdrs;
+ char domain[strlen (name) + 3];
+#if 0
if (nis_dir_cmp (name, dir->do_name) == SAME_NAME)
return dir;
+#endif
- fd_res = __nis_finddirectory (dir, name);
+ const char *search_name = name;
+ if (search_parent_first)
+ {
+ nis_domain_of_r (name, domain, sizeof (domain));
+ search_name = domain;
+ }
+
+ if (nis_dir_cmp (search_name, dir->do_name) == SAME_NAME)
+ return dir;
+
+ fd_res = __nis_finddirectory (dir, search_name);
if (fd_res == NULL)
return NULL;
if (fd_res->status == NIS_SUCCESS
@@ -568,223 +499,41 @@ first_shoot (const_nis_name name, directory_obj *dir)
return obj;
}
-static struct nis_server_cache
-{
- int search_parent;
- int uses;
- unsigned int size;
- unsigned int server_used;
- unsigned int current_ep;
- time_t expires;
- char name[];
-} *nis_server_cache[16];
-static time_t nis_cold_start_mtime;
-__libc_lock_define_initialized (static, nis_server_cache_lock)
-
-static directory_obj *
-nis_server_cache_search (const_nis_name name, int search_parent,
- unsigned int *server_used, unsigned int *current_ep,
- struct timeval *now)
-{
- directory_obj *ret = NULL;
- int i;
- char *addr;
- XDR xdrs;
- struct stat64 st;
-
- if (stat64 ("/var/nis/NIS_COLD_START", &st) < 0)
- st.st_mtime = nis_cold_start_mtime + 1;
-
- __libc_lock_lock (nis_server_cache_lock);
-
- for (i = 0; i < 16; ++i)
- if (nis_server_cache[i] == NULL)
- continue;
- else if (st.st_mtime != nis_cold_start_mtime
- || now->tv_sec > nis_server_cache[i]->expires)
- {
- free (nis_server_cache[i]);
- nis_server_cache[i] = NULL;
- }
- else if (nis_server_cache[i]->search_parent == search_parent
- && strcmp (nis_server_cache[i]->name, name) == 0)
- {
- ret = calloc (1, sizeof (directory_obj));
- if (ret == NULL)
- break;
-
- addr = rawmemchr (nis_server_cache[i]->name, '\0') + 8;
- addr = (char *) ((uintptr_t) addr & ~(uintptr_t) 7);
- xdrmem_create (&xdrs, addr, nis_server_cache[i]->size, XDR_DECODE);
- if (!_xdr_directory_obj (&xdrs, ret))
- {
- xdr_destroy (&xdrs);
- free (ret);
- ret = NULL;
- free (nis_server_cache[i]);
- nis_server_cache[i] = NULL;
- break;
- }
- xdr_destroy (&xdrs);
- *server_used = nis_server_cache[i]->server_used;
- *current_ep = nis_server_cache[i]->current_ep;
- break;
- }
-
- nis_cold_start_mtime = st.st_mtime;
-
- __libc_lock_unlock (nis_server_cache_lock);
- return ret;
-}
-
-static void
-nis_server_cache_add (const_nis_name name, int search_parent,
- directory_obj *dir, unsigned int server_used,
- unsigned int current_ep, struct timeval *now)
-{
- struct nis_server_cache **loc;
- struct nis_server_cache *new;
- struct nis_server_cache *old;
- int i;
- char *addr;
- unsigned int size;
- XDR xdrs;
-
- if (dir == NULL)
- return;
-
- size = xdr_sizeof ((xdrproc_t) _xdr_directory_obj, (char *) dir);
- new = calloc (1, sizeof (*new) + strlen (name) + 8 + size);
- if (new == NULL)
- return;
- new->search_parent = search_parent;
- new->uses = 1;
- new->expires = now->tv_sec + dir->do_ttl;
- new->size = size;
- new->server_used = server_used;
- new->current_ep = current_ep;
- addr = stpcpy (new->name, name) + 8;
- addr = (char *) ((uintptr_t) addr & ~(uintptr_t) 7);
-
- xdrmem_create(&xdrs, addr, size, XDR_ENCODE);
- if (!_xdr_directory_obj (&xdrs, dir))
- {
- xdr_destroy (&xdrs);
- free (new);
- return;
- }
- xdr_destroy (&xdrs);
-
- __libc_lock_lock (nis_server_cache_lock);
-
- /* Choose which entry should be evicted from the cache. */
- loc = &nis_server_cache[0];
- if (*loc != NULL)
- for (i = 1; i < 16; ++i)
- if (nis_server_cache[i] == NULL)
- {
- loc = &nis_server_cache[i];
- break;
- }
- else if ((*loc)->uses > nis_server_cache[i]->uses
- || ((*loc)->uses == nis_server_cache[i]->uses
- && (*loc)->expires > nis_server_cache[i]->expires))
- loc = &nis_server_cache[i];
- old = *loc;
- *loc = new;
-
- __libc_lock_unlock (nis_server_cache_lock);
- free (old);
-}
-
nis_error
-__nisfind_server (const_nis_name name, int search_parent,
- directory_obj **dir, dir_binding *dbp, unsigned int flags)
+__nisfind_server (const_nis_name name, int search_parent_first,
+ directory_obj **dir)
{
- nis_error result = NIS_SUCCESS;
- nis_error status;
- directory_obj *obj;
- struct timeval now;
- unsigned int server_used = ~0;
- unsigned int current_ep = ~0;
-
if (name == NULL)
return NIS_BADNAME;
- if (*dir != NULL)
- return NIS_SUCCESS;
+#if 0
+ /* Search in local cache. In the moment, we ignore the fastest server */
+ if (!(flags & NO_CACHE))
+ dir = __nis_cache_search (name, flags, &cinfo);
+#endif
- (void) gettimeofday (&now, NULL);
-
- if ((flags & NO_CACHE) == 0)
- *dir = nis_server_cache_search (name, search_parent, &server_used,
- &current_ep, &now);
- if (*dir != NULL)
+ nis_error result = NIS_SUCCESS;
+ if (*dir == NULL)
{
- unsigned int server_len = (*dir)->do_servers.do_servers_len;
- if (flags & MASTER_ONLY)
- {
- server_len = 1;
- if (server_used != 0)
- {
- server_used = ~0;
- current_ep = ~0;
- }
- }
- result = __nisbind_create (dbp, (*dir)->do_servers.do_servers_val,
- server_len, server_used, current_ep, flags);
- if (result != NIS_SUCCESS)
- {
- nis_free_directory (*dir);
- *dir = NULL;
- }
- return result;
- }
+ nis_error status;
+ directory_obj *obj;
- *dir = readColdStartFile ();
- if (*dir == NULL)
- /* No /var/nis/NIS_COLD_START->no NIS+ installed. */
- return NIS_UNAVAIL;
+ *dir = readColdStartFile ();
+ if (*dir == NULL)
+ /* No /var/nis/NIS_COLD_START->no NIS+ installed. */
+ return NIS_UNAVAIL;
- /* Try at first, if servers in "dir" know our object */
- const char *search_name = name;
- if (search_parent)
- search_name = __nis_domain_of (name);
- obj = first_shoot (search_name, *dir);
- if (obj == NULL)
- {
- obj = rec_dirsearch (search_name, *dir, &status);
+ /* Try at first, if servers in "dir" know our object */
+ obj = first_shoot (name, search_parent_first, *dir);
if (obj == NULL)
- result = status;
- }
-
- if (result == NIS_SUCCESS)
- {
- unsigned int server_len = obj->do_servers.do_servers_len;
- if (flags & MASTER_ONLY)
- server_len = 1;
- result = __nisbind_create (dbp, obj->do_servers.do_servers_val,
- server_len, ~0, ~0, flags);
- if (result == NIS_SUCCESS)
{
- if ((flags & MASTER_ONLY) == 0
- || obj->do_servers.do_servers_len == 1)
- {
- server_used = dbp->server_used;
- current_ep = dbp->current_ep;
- }
- if ((flags & NO_CACHE) == 0)
- nis_server_cache_add (name, search_parent, obj,
- server_used, current_ep, &now);
+ obj = rec_dirsearch (name, *dir, &status);
+ if (obj == NULL)
+ result = status;
}
- else
- {
- nis_free_directory (obj);
- obj = NULL;
- }
- }
- *dir = obj;
+ *dir = obj;
+ }
return result;
}
@@ -794,19 +543,38 @@ nis_error
__prepare_niscall (const_nis_name name, directory_obj **dirp,
dir_binding *bptrp, unsigned int flags)
{
- nis_error retcode = __nisfind_server (name, 1, dirp, bptrp, flags);
+ nis_error retcode = __nisfind_server (name, 1, dirp);
if (__builtin_expect (retcode != NIS_SUCCESS, 0))
return retcode;
- do
- if (__nisbind_connect (bptrp) == NIS_SUCCESS)
- return NIS_SUCCESS;
- while (__nisbind_next (bptrp) == NIS_SUCCESS);
+ nis_server *server;
+ u_int server_len;
- __nisbind_destroy (bptrp);
- memset (bptrp, '\0', sizeof (*bptrp));
+ if (flags & MASTER_ONLY)
+ {
+ server = (*dirp)->do_servers.do_servers_val;
+ server_len = 1;
+ }
+ else
+ {
+ server = (*dirp)->do_servers.do_servers_val;
+ server_len = (*dirp)->do_servers.do_servers_len;
+ }
+
+ retcode = __nisbind_create (bptrp, server, server_len, flags);
+ if (retcode == NIS_SUCCESS)
+ {
+ do
+ if (__nisbind_connect (bptrp) == NIS_SUCCESS)
+ return NIS_SUCCESS;
+ while (__nisbind_next (bptrp) == NIS_SUCCESS);
+
+ __nisbind_destroy (bptrp);
+ memset (bptrp, '\0', sizeof (*bptrp));
+
+ retcode = NIS_NAMEUNREACHABLE;
+ }
- retcode = NIS_NAMEUNREACHABLE;
nis_free_directory (*dirp);
*dirp = NULL;