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30891f35fa
We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
144 lines
3.4 KiB
C
144 lines
3.4 KiB
C
/* Copyright (C) 1997-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <hesiod.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <nss.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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NSS_DECLARE_MODULE_FUNCTIONS (hesiod)
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/* Declare a parser for Hesiod protocol entries. Although the format
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of the entries is identical to those in /etc/protocols, here is no
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predefined parser for us to use. */
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#define ENTNAME protoent
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struct protoent_data {};
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#define TRAILING_LIST_MEMBER p_aliases
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#define TRAILING_LIST_SEPARATOR_P isspace
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#include <nss/nss_files/files-parse.c>
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LINE_PARSER
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("#",
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STRING_FIELD (result->p_name, isspace, 1);
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INT_FIELD (result->p_proto, isspace, 1, 10,);
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)
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enum nss_status
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_nss_hesiod_setprotoent (int stayopen)
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{
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return NSS_STATUS_SUCCESS;
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}
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enum nss_status
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_nss_hesiod_endprotoent (void)
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{
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return NSS_STATUS_SUCCESS;
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}
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static enum nss_status
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lookup (const char *name, const char *type, struct protoent *proto,
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char *buffer, size_t buflen, int *errnop)
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{
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struct parser_data *data = (void *) buffer;
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size_t linebuflen;
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void *context;
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char **list, **item;
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int parse_res;
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int found;
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int olderr = errno;
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if (hesiod_init (&context) < 0)
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return NSS_STATUS_UNAVAIL;
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list = hesiod_resolve (context, name, type);
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if (list == NULL)
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{
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int err = errno;
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hesiod_end (context);
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__set_errno (olderr);
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return err == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL;
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}
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linebuflen = buffer + buflen - data->linebuffer;
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item = list;
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found = 0;
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do
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{
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size_t len = strlen (*item) + 1;
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if (linebuflen < len)
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{
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hesiod_free_list (context, list);
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hesiod_end (context);
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*errnop = ERANGE;
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return NSS_STATUS_TRYAGAIN;
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}
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memcpy (data->linebuffer, *item, len);
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parse_res = parse_line (buffer, proto, data, buflen, errnop);
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if (parse_res == -1)
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{
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hesiod_free_list (context, list);
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hesiod_end (context);
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return NSS_STATUS_TRYAGAIN;
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}
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if (parse_res > 0)
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found = 1;
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++item;
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}
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while (*item != NULL && !found);
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hesiod_free_list (context, list);
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hesiod_end (context);
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if (found == 0)
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{
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__set_errno (olderr);
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return NSS_STATUS_NOTFOUND;
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}
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return NSS_STATUS_SUCCESS;
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}
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enum nss_status
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_nss_hesiod_getprotobyname_r (const char *name, struct protoent *proto,
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char *buffer, size_t buflen, int *errnop)
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{
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return lookup (name, "protocol", proto, buffer, buflen, errnop);
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}
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enum nss_status
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_nss_hesiod_getprotobynumber_r (const int protocol, struct protoent *proto,
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char *buffer, size_t buflen, int *errnop)
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{
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char protostr[21];
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snprintf (protostr, sizeof protostr, "%d", protocol);
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return lookup (protostr, "protonum", proto, buffer, buflen, errnop);
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}
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