diff options
Diffstat (limited to 'nis/nss_nis/nis-alias.c')
-rw-r--r-- | nis/nss_nis/nis-alias.c | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/nis/nss_nis/nis-alias.c b/nis/nss_nis/nis-alias.c deleted file mode 100644 index c9c89db6ce..0000000000 --- a/nis/nss_nis/nis-alias.c +++ /dev/null @@ -1,281 +0,0 @@ -/* Copyright (C) 1996-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <nss.h> -#include <ctype.h> -#include <errno.h> -#include <string.h> -#include <aliases.h> -#include <libc-lock.h> -#include <rpcsvc/yp.h> -#include <rpcsvc/ypclnt.h> - -#include "nss-nis.h" - -__libc_lock_define_initialized (static, lock) - -static bool_t new_start = 1; -static char *oldkey; -static int oldkeylen; - -static int -_nss_nis_parse_aliasent (const char *key, char *alias, struct aliasent *result, - char *buffer, size_t buflen, int *errnop) -{ - char *first_unused = buffer + strlen (alias) + 1; - size_t room_left = - buflen - (buflen % __alignof__ (char *)) - strlen (alias) - 2; - char *line; - char *cp; - - result->alias_members_len = 0; - *first_unused = '\0'; - first_unused++; - strcpy (first_unused, key); - - if (first_unused[room_left - 1] != '\0') - { - /* The line is too long for our buffer. */ - no_more_room: - *errnop = ERANGE; - return -1; - } - - result->alias_name = first_unused; - - /* Terminate the line for any case. */ - cp = strpbrk (alias, "#\n"); - if (cp != NULL) - *cp = '\0'; - - first_unused += strlen (result->alias_name) + 1; - /* Adjust the pointer so it is aligned for - storing pointers. */ - first_unused += __alignof__ (char *) - 1; - first_unused -= ((first_unused - (char *) 0) % __alignof__ (char *)); - result->alias_members = (char **) first_unused; - - line = alias; - - while (*line != '\0') - { - /* Skip leading blanks. */ - while (isspace (*line)) - line++; - - if (*line == '\0') - break; - - if (room_left < sizeof (char *)) - goto no_more_room; - room_left -= sizeof (char *); - result->alias_members[result->alias_members_len] = line; - - while (*line != '\0' && *line != ',') - line++; - - if (line != result->alias_members[result->alias_members_len]) - { - *line = '\0'; - line++; - result->alias_members_len++; - } - } - return result->alias_members_len == 0 ? 0 : 1; -} - -enum nss_status -_nss_nis_setaliasent (void) -{ - __libc_lock_lock (lock); - - new_start = 1; - if (oldkey != NULL) - { - free (oldkey); - oldkey = NULL; - oldkeylen = 0; - } - - __libc_lock_unlock (lock); - - return NSS_STATUS_SUCCESS; -} -/* The 'endaliasent' function is identical. */ -strong_alias (_nss_nis_setaliasent, _nss_nis_endaliasent) - -static enum nss_status -internal_nis_getaliasent_r (struct aliasent *alias, char *buffer, - size_t buflen, int *errnop) -{ - char *domain; - - if (__glibc_unlikely (yp_get_default_domain (&domain))) - return NSS_STATUS_UNAVAIL; - - alias->alias_local = 0; - - /* Get the next entry until we found a correct one. */ - int parse_res; - do - { - char *result; - int len; - char *outkey; - int keylen; - int yperr; - - if (new_start) - yperr = yp_first (domain, "mail.aliases", &outkey, &keylen, &result, - &len); - else - yperr = yp_next (domain, "mail.aliases", oldkey, oldkeylen, &outkey, - &keylen, &result, &len); - - if (__glibc_unlikely (yperr != YPERR_SUCCESS)) - { - enum nss_status retval = yperr2nss (yperr); - - if (retval == NSS_STATUS_TRYAGAIN) - *errnop = errno; - return retval; - } - - if (__glibc_unlikely ((size_t) (len + 1) > buflen)) - { - free (result); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - char *p = strncpy (buffer, result, len); - buffer[len] = '\0'; - while (isspace (*p)) - ++p; - free (result); - - parse_res = _nss_nis_parse_aliasent (outkey, p, alias, buffer, - buflen, errnop); - if (__glibc_unlikely (parse_res == -1)) - { - free (outkey); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - - free (oldkey); - oldkey = outkey; - oldkeylen = keylen; - new_start = 0; - } - while (!parse_res); - - return NSS_STATUS_SUCCESS; -} - -enum nss_status -_nss_nis_getaliasent_r (struct aliasent *alias, char *buffer, size_t buflen, - int *errnop) -{ - enum nss_status status; - - __libc_lock_lock (lock); - - status = internal_nis_getaliasent_r (alias, buffer, buflen, errnop); - - __libc_lock_unlock (lock); - - return status; -} - -enum nss_status -_nss_nis_getaliasbyname_r (const char *name, struct aliasent *alias, - char *buffer, size_t buflen, int *errnop) -{ - if (name == NULL) - { - *errnop = EINVAL; - return NSS_STATUS_UNAVAIL; - } - - char *domain; - if (__glibc_unlikely (yp_get_default_domain (&domain))) - 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) - name2[i] = _tolower (name[i]); - name2[i] = '\0'; - - char *result; - int len; - int yperr = yp_match (domain, "mail.aliases", name2, namlen, &result, &len); - - if (!use_alloca) - free (name2); - - if (__glibc_unlikely (yperr != YPERR_SUCCESS)) - { - enum nss_status retval = yperr2nss (yperr); - - if (retval == NSS_STATUS_TRYAGAIN) - *errnop = errno; - return retval; - } - - if (__glibc_unlikely ((size_t) (len + 1) > buflen)) - { - free (result); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - - char *p = strncpy (buffer, result, len); - buffer[len] = '\0'; - while (isspace (*p)) - ++p; - free (result); - - alias->alias_local = 0; - int parse_res = _nss_nis_parse_aliasent (name, p, alias, buffer, buflen, - errnop); - if (__glibc_unlikely (parse_res < 1)) - { - if (parse_res == -1) - return NSS_STATUS_TRYAGAIN; - else - return NSS_STATUS_NOTFOUND; - } - - return NSS_STATUS_SUCCESS; -} |