diff options
Diffstat (limited to 'glibc-compat/nss_nis/nis-spwd.c')
| -rw-r--r-- | glibc-compat/nss_nis/nis-spwd.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/glibc-compat/nss_nis/nis-spwd.c b/glibc-compat/nss_nis/nis-spwd.c new file mode 100644 index 0000000000..d7857b2c88 --- /dev/null +++ b/glibc-compat/nss_nis/nis-spwd.c @@ -0,0 +1,201 @@ +/* Copyright (C) 1996, 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <nss.h> +#include <ctype.h> +#include <errno.h> +#include <string.h> +#include <glibc-compat/include/shadow.h> +#include <bits/libc-lock.h> +#include <rpcsvc/yp.h> +#include <rpcsvc/ypclnt.h> + +#include "nss-nis.h" + +/* Get the declaration of the parser function. */ +#define ENTNAME spent +#define STRUCTURE spwd +#define EXTERN_PARSER +#include "../nss_files/files-parse.c" + +/* Protect global state against multiple changers */ +__libc_lock_define_initialized (static, lock) + +static bool_t new_start = 1; +static char *oldkey = NULL; +static int oldkeylen = 0; + +enum nss_status +_nss_nis_setspent (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; +} + +enum nss_status +_nss_nis_endspent (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; +} + +static enum nss_status +internal_nis_getspent_r (struct spwd *sp, char *buffer, size_t buflen) +{ + struct parser_data *data = (void *) buffer; + char *domain, *result, *outkey; + int len, keylen, parse_res; + + if (yp_get_default_domain (&domain)) + return NSS_STATUS_UNAVAIL; + + /* Get the next entry until we found a correct one. */ + do + { + enum nss_status retval; + char *p; + + if (new_start) + retval = yperr2nss (yp_first (domain, "shadow.byname", + &outkey, &keylen, &result, &len)); + else + retval = yperr2nss ( yp_next (domain, "shadow.byname", + oldkey, oldkeylen, + &outkey, &keylen, &result, &len)); + + if (retval != NSS_STATUS_SUCCESS) + { + if (retval == NSS_STATUS_TRYAGAIN) + __set_errno (EAGAIN); + return retval; + } + + if ((size_t) (len + 1) > buflen) + { + free (result); + __set_errno (ERANGE); + return NSS_STATUS_TRYAGAIN; + } + + p = strncpy (buffer, result, len); + buffer[len] = '\0'; + while (isspace (*p)) + ++p; + free (result); + + parse_res = _nss_files_parse_spent (p, sp, data, buflen); + if (parse_res == -1 && errno == 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_getspent_r (struct spwd *result, char *buffer, size_t buflen) +{ + int status; + + __libc_lock_lock (lock); + + status = internal_nis_getspent_r (result, buffer, buflen); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_nis_getspnam_r (const char *name, struct spwd *sp, + char *buffer, size_t buflen) +{ + struct parser_data *data = (void *) buffer; + enum nss_status retval; + char *domain, *result, *p; + int len, parse_res; + + if (name == NULL) + { + __set_errno (EINVAL); + return NSS_STATUS_UNAVAIL; + } + + if (yp_get_default_domain (&domain)) + return NSS_STATUS_UNAVAIL; + + retval = yperr2nss (yp_match (domain, "shadow.byname", name, + strlen (name), &result, &len)); + + if (retval != NSS_STATUS_SUCCESS) + { + if (retval == NSS_STATUS_TRYAGAIN) + __set_errno (EAGAIN); + return retval; + } + + if ((size_t) (len + 1) > buflen) + { + free (result); + __set_errno (ERANGE); + return NSS_STATUS_TRYAGAIN; + } + + p = strncpy (buffer, result, len); + buffer[len] = '\0'; + while (isspace (*p)) + ++p; + free (result); + + parse_res = _nss_files_parse_spent (p, sp, data, buflen); + + if (parse_res == -1 && errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + else if (parse_res == 0) + return NSS_STATUS_NOTFOUND; + + return NSS_STATUS_SUCCESS; +} |