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-rw-r--r--nis/nis_subr.c105
1 files changed, 35 insertions, 70 deletions
diff --git a/nis/nis_subr.c b/nis/nis_subr.c
index c68189e541..4c4ef8b5b4 100644
--- a/nis/nis_subr.c
+++ b/nis/nis_subr.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 1997,1999,2000,2004,2005,2006 Free Software Foundation, Inc.
+/* Copyright (c) 1997, 1999, 2000, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
@@ -39,13 +39,22 @@ nis_leaf_of_r (const_nis_name name, char *buffer, size_t buflen)
while (name[i] != '.' && name[i] != '\0')
i++;
- if (__builtin_expect (i >= buflen, 0))
+ if (i > buflen - 1)
{
__set_errno (ERANGE);
return NULL;
}
- *((char *) __mempcpy (buffer, name, i)) = '\0';
+ if (i > 0)
+ {
+ if ((size_t)i >= buflen)
+ {
+ __set_errno (ERANGE);
+ return NULL;
+ }
+
+ *((char *) __mempcpy (buffer, name, i)) = '\0';
+ }
return buffer;
}
@@ -89,12 +98,13 @@ nis_name_of_r (const_nis_name name, char *buffer, size_t buflen)
}
libnsl_hidden_def (nis_name_of_r)
-static int __always_inline
+static int
count_dots (const_nis_name str)
{
int count = 0;
+ size_t l = strlen (str);
- for (size_t i = 0; str[i] != '\0'; ++i)
+ for (size_t i = 0; i < l; ++i)
if (str[i] == '.')
++count;
@@ -107,23 +117,25 @@ count_dots (const_nis_name str)
nis_name *
nis_getnames (const_nis_name name)
{
- const char *local_domain = nis_local_directory ();
- size_t local_domain_len = strlen (local_domain);
- size_t name_len = strlen (name);
+ nis_name *getnames = NULL;
+ char local_domain[NIS_MAXNAMELEN + 1];
char *path;
+ char *cp;
+ int count;
int pos = 0;
- char *saveptr;
int have_point;
- const char *cp;
- const char *cp2;
+ char *saveptr;
- int count = 2;
- nis_name *getnames = malloc ((count + 1) * sizeof (char *));
+ strncpy (local_domain, nis_local_directory (), NIS_MAXNAMELEN);
+ local_domain[NIS_MAXNAMELEN] = '\0';
+
+ count = 1;
+ getnames = malloc ((count + 1) * sizeof (char *));
if (__builtin_expect (getnames == NULL, 0))
return NULL;
/* Do we have a fully qualified NIS+ name ? If yes, give it back */
- if (name[name_len - 1] == '.')
+ if (name[strlen (name) - 1] == '.')
{
if ((getnames[0] = strdup (name)) == NULL)
{
@@ -139,44 +151,6 @@ nis_getnames (const_nis_name name)
return getnames;
}
- /* If the passed NAME is shared a suffix (the latter of course with
- a final dot) with each other we pass back NAME with a final
- dot. */
- if (local_domain_len > 2)
- {
- have_point = 0;
- cp = &local_domain[local_domain_len - 2];
- cp2 = &name[name_len - 1];
-
- while (*cp == *cp2)
- {
- if (*cp == '.')
- have_point = 1;
- --cp;
- --cp2;
- if (cp < local_domain)
- {
- have_point = cp2 < name || *cp2 == '.';
- break;
- }
- if (cp2 < name)
- {
- have_point = *cp == '.';
- break;
- }
- }
-
- if (have_point)
- {
- getnames[0] = malloc (name_len + 2);
- if (getnames[0] == NULL)
- goto free_null;
-
- strcpy (stpcpy (getnames[0], name), ".");
- ++pos;
- }
- }
-
/* Get the search path, where we have to search "name" */
path = getenv ("NIS_PATH");
if (path == NULL)
@@ -184,17 +158,17 @@ nis_getnames (const_nis_name name)
else
path = strdupa (path);
- have_point = strchr (name, '.') != NULL;
+ have_point = (strchr (name, '.') != NULL);
cp = __strtok_r (path, ":", &saveptr);
while (cp)
{
if (strcmp (cp, "$") == 0)
{
- const char *cptr = local_domain;
+ char *cptr = local_domain;
char *tmp;
- while (*cptr != '\0' && count_dots (cptr) >= 2)
+ while ((have_point && *cptr != '\0') || (count_dots (cptr) >= 2))
{
if (pos >= count)
{
@@ -205,7 +179,8 @@ nis_getnames (const_nis_name name)
goto free_null;
getnames = newp;
}
- tmp = malloc (strlen (cptr) + local_domain_len + name_len + 2);
+ tmp = malloc (strlen (cptr) + strlen (local_domain) +
+ strlen (name) + 2);
if (__builtin_expect (tmp == NULL, 0))
goto free_null;
@@ -235,7 +210,7 @@ nis_getnames (const_nis_name name)
{
char *p;
- tmp = malloc (cplen + local_domain_len + name_len + 2);
+ tmp = malloc (cplen + strlen (local_domain) + strlen (name) + 2);
if (__builtin_expect (tmp == NULL, 0))
goto free_null;
@@ -251,16 +226,13 @@ nis_getnames (const_nis_name name)
{
char *p;
- tmp = malloc (cplen + name_len + 3);
+ tmp = malloc (cplen + strlen (name) + 2);
if (__builtin_expect (tmp == NULL, 0))
goto free_null;
- p = __mempcpy (tmp, name, name_len);
+ p = __stpcpy (tmp, name);
*p++ = '.';
- p = __mempcpy (p, cp, cplen);
- if (p[-1] != '.')
- *p++ = '.';
- *p = '\0';
+ memcpy (p, cp, cplen + 1);
}
if (pos >= count)
@@ -278,13 +250,6 @@ nis_getnames (const_nis_name name)
cp = __strtok_r (NULL, ":", &saveptr);
}
- if (pos == 0
- && __asprintf (&getnames[pos++], "%s%s%s%s",
- name, name[name_len - 1] == '.' ? "" : ".",
- local_domain,
- local_domain[local_domain_len - 1] == '.' ? "" : ".") < 0)
- goto free_null;
-
getnames[pos] = NULL;
return getnames;