diff options
Diffstat (limited to 'hesiod/nss_hesiod/hesiod-service.c')
| -rw-r--r-- | hesiod/nss_hesiod/hesiod-service.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/hesiod/nss_hesiod/hesiod-service.c b/hesiod/nss_hesiod/hesiod-service.c new file mode 100644 index 0000000000..f74877f748 --- /dev/null +++ b/hesiod/nss_hesiod/hesiod-service.c @@ -0,0 +1,165 @@ +/* Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997. + + 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 <bits/libc-lock.h> +#include <errno.h> +#include <hesiod.h> +#include <netdb.h> +#include <netinet/in.h> +#include <nss.h> +#include <stdlib.h> +#include <string.h> + + +/* Hesiod uses a format for service entries that differs from the + traditional format. We therefore declare our own parser. */ + +#define ENTNAME servent + +#define ENTDATA servent_data +struct servent_data {}; + +#define TRAILING_LIST_MEMBER s_aliases +#define TRAILING_LIST_SEPARATOR_P isspace +#include <nss/nss_files/files-parse.c> +#define ISSEMICOLON(c) ((c) == ';') +LINE_PARSER +("", + (void) entdata; + STRING_FIELD (result->s_name, ISSEMICOLON, 1); + STRING_FIELD (result->s_proto, ISSEMICOLON, 1); + INT_FIELD (result->s_port, ISSEMICOLON, 10, 0, htons); + ) + + +/* Locks the static variables in this file. */ +__libc_lock_define_initialized (static, lock); + +static void *context = NULL; + +static enum nss_status +internal_setservent (void) +{ + if (!context) + { + if (hesiod_init (&context) == -1) + return NSS_STATUS_UNAVAIL; + } + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_hesiod_setservent (void) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = internal_setservent (); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_hesiod_endservent (void) +{ + __libc_lock_lock (lock); + + if (context) + { + hesiod_end (context); + context = NULL; + } + + __libc_lock_unlock (lock); + + return NSS_STATUS_SUCCESS; +} + +static enum nss_status +lookup (const char *name, const char *protocol, struct servent *serv, + char *buffer, size_t buflen) +{ + enum nss_status status; + struct parser_data *data = (void *) buffer; + size_t linebuflen; + char **list, **item; + int parse_res; + int found; + + status = internal_setservent (); + if (status != NSS_STATUS_SUCCESS) + return status; + + list = hesiod_resolve (context, name, "service"); + if (list == NULL) + return errno == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL; + + linebuflen = buffer + buflen - data->linebuffer; + + item = list; + found = 0; + do + { + if (linebuflen < strlen (*item) + 1) + { + hesiod_free_list (context, list); + __set_errno (ERANGE); + return NSS_STATUS_TRYAGAIN; + } + + strcpy (data->linebuffer, *item); + + parse_res = parse_line (buffer, serv, data, buflen); + if (parse_res == -1) + { + hesiod_free_list (context, list); + return NSS_STATUS_TRYAGAIN; + } + + if (parse_res > 0) + found = protocol == NULL || strcmp (serv->s_proto, protocol) == 0; + + ++item; + } + while (*item != NULL && !found); + + hesiod_free_list (context, list); + + return found ? NSS_STATUS_SUCCESS : NSS_STATUS_NOTFOUND; +} + +enum nss_status +_nss_hesiod_getservbyname_r (const char *name, const char *protocol, + struct servent *serv, + char *buffer, size_t buflen) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = lookup (name, protocol, serv, buffer, buflen); + + __libc_lock_unlock (lock); + + return status; +} |