diff options
Diffstat (limited to 'nis/nss_nis/nis-alias.c')
| -rw-r--r-- | nis/nss_nis/nis-alias.c | 43 |
1 files changed, 29 insertions, 14 deletions
diff --git a/nis/nss_nis/nis-alias.c b/nis/nss_nis/nis-alias.c index 9286e36ba6..cfe4097ec8 100644 --- a/nis/nss_nis/nis-alias.c +++ b/nis/nss_nis/nis-alias.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996-2002, 2003, 2006 Free Software Foundation, Inc. +/* Copyright (C) 1996-2002, 2003, 2006, 2011 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996. @@ -142,10 +142,10 @@ internal_nis_getaliasent_r (struct aliasent *alias, char *buffer, int yperr; if (new_start) - yperr = yp_first (domain, "mail.aliases", &outkey, &keylen, &result, + yperr = yp_first (domain, "mail.aliases", &outkey, &keylen, &result, &len); else - yperr = yp_next (domain, "mail.aliases", oldkey, oldkeylen, &outkey, + yperr = yp_next (domain, "mail.aliases", oldkey, oldkeylen, &outkey, &keylen, &result, &len); if (__builtin_expect (yperr != YPERR_SUCCESS, 0)) @@ -153,20 +153,20 @@ internal_nis_getaliasent_r (struct aliasent *alias, char *buffer, enum nss_status retval = yperr2nss (yperr); if (retval == NSS_STATUS_TRYAGAIN) - *errnop = errno; - return retval; - } + *errnop = errno; + return retval; + } if (__builtin_expect ((size_t) (len + 1) > buflen, 0)) - { + { free (result); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } + *errnop = ERANGE; + return NSS_STATUS_TRYAGAIN; + } char *p = strncpy (buffer, result, len); buffer[len] = '\0'; while (isspace (*p)) - ++p; + ++p; free (result); parse_res = _nss_nis_parse_aliasent (outkey, p, alias, buffer, @@ -213,13 +213,25 @@ _nss_nis_getaliasbyname_r (const char *name, struct aliasent *alias, return NSS_STATUS_UNAVAIL; } - size_t namlen = strlen (name); - char name2[namlen + 1]; - char *domain; if (__builtin_expect (yp_get_default_domain (&domain), 0)) return NSS_STATUS_UNAVAIL; + size_t namlen = strlen (name); + char *name2; + int use_alloca = __libc_use_alloca (namlen + 1); + if (use_alloca) + name2 = __alloca (namlen + 1); + else + { + name2 = malloc (namlen + 1); + if (name2 == NULL) + { + *errnop = ENOMEM; + return NSS_STATUS_TRYAGAIN; + } + } + /* Convert name to lowercase. */ size_t i; for (i = 0; i < namlen; ++i) @@ -230,6 +242,9 @@ _nss_nis_getaliasbyname_r (const char *name, struct aliasent *alias, int len; int yperr = yp_match (domain, "mail.aliases", name2, namlen, &result, &len); + if (!use_alloca) + free (name2); + if (__builtin_expect (yperr != YPERR_SUCCESS, 0)) { enum nss_status retval = yperr2nss (yperr); |