Update.

2004-03-30  Jakub Jelinek  <jakub@redhat.com>

	* nis/nss_nis/nis-service.c (_nss_nis_getservbyname_r): If protocol
	== NULL, try name/tcp and name/udp first before falling back into
	the sequential scanning.  Use services.byname database for
	sequential scanning.
	(_nss_nis_getservbyport_r): Likewise.  Just allocate sizeof (int) * 3
	chars for integer.

	* nis/nss_nis/nis-service.c (_nss_nis_getservbyport_r): Convert
	proto to host by order for snprintf.

	* nss/getent.c (services_keys): Don't implement lookups with
	missing protocol using getservent loop, just pass NULL.

ChangeLog

@@ -1,5 +1,20 @@
+2004-03-30  Jakub Jelinek  <jakub@redhat.com>
+
+	* nis/nss_nis/nis-service.c (_nss_nis_getservbyname_r): If protocol
+	== NULL, try name/tcp and name/udp first before falling back into
+	the sequential scanning.  Use services.byname database for
+	sequential scanning.
+	(_nss_nis_getservbyport_r): Likewise.  Just allocate sizeof (int) * 3
+	chars for integer.
+
+	* nis/nss_nis/nis-service.c (_nss_nis_getservbyport_r): Convert
+	proto to host by order for snprintf.
+
 2004-03-30  Ulrich Drepper  <drepper@redhat.com>
 
+	* nss/getent.c (services_keys): Don't implement lookups with
+	missing protocol using getservent loop, just pass NULL.
+
 	* sysdeps/unix/sysv/linux/i386/setgroups.c (setgroups): Avoid
 	comparison with limit if we can rely on the syscall being available.
 

nis/nss_nis/nis-service.c

@@ -279,18 +279,21 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol,
     return NSS_STATUS_UNAVAIL;
 
   /* If the protocol is given, we could try if our NIS server knows
-     about services.byservicename map. If yes, we only need one query */
+     about services.byservicename map. If yes, we only need one query.
-  if (protocol != NULL)
+     If the protocol is not given, try first name/tcp, then name/udp
+     and then fallback to sequential scanning of services.byname map.  */
+  const char *proto = protocol != NULL ? protocol : "tcp";
+  do
     {
-      char key[strlen (name) + strlen (protocol) + 2];
+      char key[strlen (name) + strlen (proto) + 2];
       char *cp, *result;
       size_t keylen, len;
       int int_len;
 
-      /* key is: "name/protocol" */
+      /* key is: "name/proto" */
       cp = stpcpy (key, name);
       *cp++ = '/';
-      stpcpy (cp, protocol);
+      stpcpy (cp, proto);
       keylen = strlen (key);
       status = yperr2nss (yp_match (domain, "services.byservicename", key,
 				    keylen, &result, &int_len));
@@ -329,6 +332,7 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol,
 	    return NSS_STATUS_SUCCESS;
 	}
     }
+  while (protocol == NULL && (proto[0] == 't' ? (proto = "udp") : NULL));
 
   struct ypall_callback ypcb;
   struct search_t req;
@@ -343,7 +347,7 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol,
   req.buflen = buflen;
   req.errnop = errnop;
   req.status = NSS_STATUS_NOTFOUND;
-  status = yperr2nss (yp_all (domain, "services.byservicename", &ypcb));
+  status = yperr2nss (yp_all (domain, "services.byname", &ypcb));
 
   if (status != NSS_STATUS_SUCCESS)
     return status;
@@ -362,16 +366,19 @@ _nss_nis_getservbyport_r (int port, const char *protocol,
   if (yp_get_default_domain (&domain))
     return NSS_STATUS_UNAVAIL;
 
-  /* If the protocol is given, we only need one query */
+  /* If the protocol is given, we only need one query.
-  if (protocol != NULL)
+     Otherwise try first port/tcp, then port/udp and then fallback
+     to sequential scanning of services.byname.  */
+  const char *proto = protocol != NULL ? protocol : "tcp";
+  do
     {
-      char key[100 + strlen (protocol) + 2];
+      char key[sizeof (int) * 3 + strlen (proto) + 2];
       char *result;
       size_t keylen, len;
       int int_len;
 
-      /* key is: "port/protocol" */
+      /* key is: "port/proto" */
-      keylen = snprintf (key, sizeof (key), "%d/%s", port, protocol);
+      keylen = snprintf (key, sizeof (key), "%d/%s", ntohs (port), proto);
       status = yperr2nss (yp_match (domain, "services.byname", key,
 				    keylen, &result, &int_len));
       len = int_len;
@@ -409,6 +416,7 @@ _nss_nis_getservbyport_r (int port, const char *protocol,
 	    return NSS_STATUS_SUCCESS;
 	}
     }
+  while (protocol == NULL && (proto[0] == 't' ? (proto = "udp") : NULL));
 
   if (port == -1)
     return NSS_STATUS_NOTFOUND;

nss/getent.c

@@ -638,53 +638,18 @@ services_keys (int number, char *key[])
       struct servent *serv;
       char *proto = strchr (key[i], '/');
 
-      if (proto == NULL)
+      if (proto != NULL)
-	{
+	*proto++ = '\0';
-	  setservent (0);
-	  if (isdigit (key[i][0]))
-	    {
-	      int port = htons (atol (key[i]));
-	      while ((serv = getservent ()) != NULL)
-		if (serv->s_port == port)
-		  {
-		    print_services (serv);
-		    break;
-		  }
-	    }
-	  else
-	    {
-	      int j;
 
-	      while ((serv = getservent ()) != NULL)
+      if (isdigit (key[i][0]))
-		if (strcmp (serv->s_name, key[i]) == 0)
+	serv = getservbyport (htons (atol (key[i])), proto);
-		  {
-		    print_services (serv);
-		    break;
-		  }
-		else
-		  for (j = 0; serv->s_aliases[j]; ++j)
-		    if (strcmp (serv->s_aliases[j], key[i]) == 0)
-		      {
-			print_services (serv);
-			break;
-		      }
-	    }
-	  endservent ();
-	}
       else
-	{
+	serv = getservbyname (key[i], proto);
-	  *proto++ = '\0';
 
-	  if (isdigit (key[i][0]))
+      if (serv == NULL)
-	    serv = getservbyport (htons (atol (key[i])), proto);
+	result = 2;
-	  else
+      else
-	    serv = getservbyname (key[i], proto);
+	print_services (serv);
-
-	  if (serv == NULL)
-	    result = 2;
-	  else
-	    print_services (serv);
-	}
     }
 
   return result;