diff options
Diffstat (limited to 'nis/nss_nis/nis-service.c')
| -rw-r--r-- | nis/nss_nis/nis-service.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c new file mode 100644 index 0000000000..03a9fbf48e --- /dev/null +++ b/nis/nss_nis/nis-service.c @@ -0,0 +1,249 @@ +/* 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 <libc-lock.h> +#include <rpcsvc/yp.h> +#include <rpcsvc/ypclnt.h> + +#include "nss-nis.h" + +__libc_lock_define_initialized (static, lock) + +struct intern_t +{ + bool_t new_start; + char *oldkey; + int oldkeylen; +}; +typedef struct intern_t intern_t; + +static intern_t intern = {TRUE, NULL, 0}; + +static enum nss_status +internal_nis_setservent (intern_t * intern) +{ + intern->new_start = 1; + if (intern->oldkey != NULL) + { + free (intern->oldkey); + intern->oldkey = NULL; + intern->oldkeylen = 0; + } + return NSS_STATUS_SUCCESS; +} +enum nss_status +_nss_nis_setservent (void) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = internal_nis_setservent (&intern); + + __libc_lock_unlock (lock); + + return status; +} + +static enum nss_status +internal_nis_endservent (intern_t * intern) +{ + intern->new_start = 1; + if (intern->oldkey != NULL) + { + free (intern->oldkey); + intern->oldkey = NULL; + intern->oldkeylen = 0; + } + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_nis_endservent (void) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = internal_nis_endservent (&intern); + + __libc_lock_unlock (lock); + + return status; +} + +static enum nss_status +internal_nis_getservent_r (struct servent *serv, char *buffer, + size_t buflen, intern_t *data) +{ + char *domain; + char *result; + int len, parse_res; + char *outkey; + int keylen; + char *p; + + 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; + + if (data->new_start) + retval = yperr2nss (yp_first (domain, "services.byname", + &outkey, &keylen, &result, &len)); + else + retval = yperr2nss ( yp_next (domain, "services.byname", + data->oldkey, data->oldkeylen, + &outkey, &keylen, &result, &len)); + + if (retval != NSS_STATUS_SUCCESS) + { + if (retval == NSS_STATUS_TRYAGAIN) + __set_errno (EAGAIN); + return retval; + } + + if (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_servent (p, serv, buffer, buflen); + if (!parse_res && errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + + free (data->oldkey); + data->oldkey = outkey; + data->oldkeylen = keylen; + data->new_start = 0; + } + while (!parse_res); + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_nis_getservent_r (struct servent *serv, char *buffer, size_t buflen) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = internal_nis_getservent_r (serv, buffer, buflen, &intern); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_nis_getservbyname_r (const char *name, char *protocol, + struct servent *serv, char *buffer, size_t buflen) +{ + intern_t data = {TRUE, NULL, 0}; + enum nss_status status; + int found; + + if (name == NULL || protocol == NULL) + { + __set_errno (EINVAL); + return NSS_STATUS_UNAVAIL; + } + + status = internal_nis_setservent (&data); + if (status != NSS_STATUS_SUCCESS) + return status; + + found = 0; + while (!found && + ((status = internal_nis_getservent_r (serv, buffer, buflen, &data)) + == NSS_STATUS_SUCCESS)) + { + if (strcmp (serv->s_name, name) == 0) + { + if (strcmp (serv->s_proto, protocol) == 0) + { + found = 1; + } + } + } + + internal_nis_endservent (&data); + + if (!found && status == NSS_STATUS_SUCCESS) + return NSS_STATUS_NOTFOUND; + else + return status; +} + +enum nss_status +_nss_nis_getservbyport_r (int port, char *protocol, struct servent *serv, + char *buffer, size_t buflen) +{ + intern_t data = {TRUE, NULL, 0}; + enum nss_status status; + int found; + + if (protocol == NULL) + { + __set_errno (EINVAL); + return NSS_STATUS_UNAVAIL; + } + + status = internal_nis_setservent (&data); + if (status != NSS_STATUS_SUCCESS) + return status; + + found = 0; + while (!found && + ((status = internal_nis_getservent_r (serv, buffer, buflen, &data)) + == NSS_STATUS_SUCCESS)) + { + if (htons (serv->s_port) == port) + { + if (strcmp (serv->s_proto, protocol) == 0) + { + found = 1; + } + } + } + + internal_nis_endservent (&data); + + if (!found && status == NSS_STATUS_SUCCESS) + return NSS_STATUS_NOTFOUND; + else + return status; +} |