diff options
Diffstat (limited to 'nis/nss_nis/nis-network.c')
| -rw-r--r-- | nis/nss_nis/nis-network.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/nis/nss_nis/nis-network.c b/nis/nss_nis/nis-network.c new file mode 100644 index 0000000000..2795feb421 --- /dev/null +++ b/nis/nss_nis/nis-network.c @@ -0,0 +1,292 @@ +/* Copyright (C) 1996 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 <netdb.h> +#include <ctype.h> +#include <errno.h> +#include <string.h> +#include <netinet/in.h> +#include <arpa/inet.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 = NULL; +static int oldkeylen = 0; + +enum nss_status +_nss_nis_setnetent (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_endnetent (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_getnetent_r (struct netent *net, char *buffer, size_t buflen, + int *herrnop) +{ + 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, "networks.byname", + &outkey, &keylen, &result, &len)); + else + retval = yperr2nss ( yp_next (domain, "networks.byname", + oldkey, oldkeylen, + &outkey, &keylen, &result, &len)); + + if (retval != NSS_STATUS_SUCCESS) + { + if (retval == NSS_STATUS_TRYAGAIN) + { + *herrnop = NETDB_INTERNAL; + __set_errno (EAGAIN); + } + return retval; + } + + if (len + 1 > buflen) + { + free (result); + __set_errno (ERANGE); + *herrnop = NETDB_INTERNAL; + return NSS_STATUS_TRYAGAIN; + } + + p = strncpy (buffer, result, len); + buffer[len] = '\0'; + while (isspace (*p)) + ++p; + free (result); + + parse_res = _nss_files_parse_netent (p, net, buffer, buflen); + if (!parse_res && errno == ERANGE) + { + *herrnop = NETDB_INTERNAL; + 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_getnetent_r (struct netent *net, char *buffer, size_t buflen, + int *herrnop) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = internal_nis_getnetent_r (net, buffer, buflen, herrnop); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_nis_getnetbyname_r (const char *name, struct netent *net, + char *buffer, size_t buflen, int *herrnop) +{ + enum nss_status retval; + char *domain, *result, *p; + int len, parse_res; + + if (name == NULL) + { + __set_errno (EINVAL); + *herrnop = NETDB_INTERNAL; + return NSS_STATUS_UNAVAIL; + } + + if (yp_get_default_domain (&domain)) + return NSS_STATUS_UNAVAIL; + + retval = yperr2nss (yp_match (domain, "networks.byname", name, + strlen (name), &result, &len)); + + if (retval != NSS_STATUS_SUCCESS) + { + if (retval == NSS_STATUS_TRYAGAIN) + { + __set_errno (EAGAIN); + *herrnop = NETDB_INTERNAL; + } + return retval; + } + + if (len + 1 > buflen) + { + free (result); + __set_errno (ERANGE); + *herrnop = NETDB_INTERNAL; + return NSS_STATUS_TRYAGAIN; + } + + p = strncpy (buffer, result, len); + buffer[len] = '\0'; + while (isspace (*p)) + ++p; + free (result); + + parse_res = _nss_files_parse_netent (p, net, buffer, buflen); + + if (!parse_res) + { + *herrnop = NETDB_INTERNAL; + if (errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; + } + else + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_nis_getnetbyaddr_r (unsigned long addr, int type, struct netent *net, + char *buffer, size_t buflen, int *herrnop) +{ + char *domain; + char *result; + int len; + char buf[256]; + int blen; + struct in_addr in; + char *p; + + if (yp_get_default_domain (&domain)) + return NSS_STATUS_UNAVAIL; + + in = inet_makeaddr (addr, 0); + strcpy (buf, inet_ntoa (in)); + blen = strlen (buf); + + while (1) + { + enum nss_status retval; + int parse_res; + + retval = yperr2nss (yp_match (domain, "networks.byaddr", buf, + strlen (buf), &result, &len)); + + if (retval != NSS_STATUS_SUCCESS) + { + if (retval == NSS_STATUS_NOTFOUND) + { + if (buf[blen - 2] == '.' && buf[blen - 1] == '0') + { + /* Try again, but with trailing dot(s) + removed (one by one) */ + buf[blen - 2] = '\0'; + blen -= 2; + continue; + } + else + return NSS_STATUS_NOTFOUND; + } + else + { + if (retval == NSS_STATUS_TRYAGAIN) + __set_errno (EAGAIN); + return retval; + } + } + + if (len + 1 > buflen) + { + free (result); + __set_errno (ERANGE); + *herrnop = NETDB_INTERNAL; + return NSS_STATUS_TRYAGAIN; + } + + p = strncpy (buffer, result, len); + buffer[len] = '\0'; + while (isspace (*p)) + ++p; + free (result); + + parse_res = _nss_files_parse_netent (p, net, buffer, buflen); + + + if (!parse_res) + { + *herrnop = NETDB_INTERNAL; + if (errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; + } + else + return NSS_STATUS_SUCCESS; + } +} |