71170aa0a9
The passwd.adjunct.byname table will not be used to fill in password fields in the passwd.byname replies. Instead it is used to synthesize the shadow.byname table, should it be missing. This is a useful mode in some installations involving Solaris.
129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
/* Copyright (C) 1996,2001,2004,2006,2007,2010 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdio_ext.h>
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#include <stdlib.h>
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#include <string.h>
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#include <bits/libc-lock.h>
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#include <libnsl.h>
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/* Path of the file. */
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static const char default_nss[] = "/etc/default/nss";
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/* Flags once read from the file. */
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static int default_nss_flags;
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/* Code to make sure we call 'init' once. */
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__libc_once_define (static, once);
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/* Table of the recognized variables. */
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static const struct
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{
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char name[23];
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unsigned int len;
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int flag;
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} vars[] =
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{
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#define STRNLEN(s) s, sizeof (s) - 1
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{ STRNLEN ("NETID_AUTHORITATIVE"), NSS_FLAG_NETID_AUTHORITATIVE },
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{ STRNLEN ("SERVICES_AUTHORITATIVE"), NSS_FLAG_SERVICES_AUTHORITATIVE },
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{ STRNLEN ("SETENT_BATCH_READ"), NSS_FLAG_SETENT_BATCH_READ },
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{ STRNLEN ("ADJUNCT_AS_SHADOW"), NSS_FLAG_ADJUNCT_AS_SHADOW },
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};
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#define nvars (sizeof (vars) / sizeof (vars[0]))
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static void
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init (void)
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{
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int saved_errno = errno;
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FILE *fp = fopen (default_nss, "rc");
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if (fp != NULL)
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{
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char *line = NULL;
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size_t linelen = 0;
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__fsetlocking (fp, FSETLOCKING_BYCALLER);
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while (!feof_unlocked (fp))
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{
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ssize_t n = getline (&line, &linelen, fp);
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if (n <= 0)
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break;
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/* Recognize only
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<THE-VARIABLE> = TRUE
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with arbitrary white spaces. */
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char *cp = line;
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while (isspace (*cp))
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++cp;
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/* Recognize comment lines. */
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if (*cp == '#')
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continue;
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int idx;
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for (idx = 0; idx < nvars; ++idx)
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if (strncmp (cp, vars[idx].name, vars[idx].len) == 0)
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break;
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if (idx == nvars)
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continue;
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cp += vars[idx].len;
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while (isspace (*cp))
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++cp;
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if (*cp++ != '=')
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continue;
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while (isspace (*cp))
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++cp;
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if (strncmp (cp, "TRUE", 4) != 0)
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continue;
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cp += 4;
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while (isspace (*cp))
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++cp;
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if (*cp == '\0')
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default_nss_flags |= vars[idx].flag;
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}
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free (line);
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fclose (fp);
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}
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__set_errno (saved_errno);
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}
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int
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_nsl_default_nss (void)
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{
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/* If we have not yet read the file yet do it now. */
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__libc_once (once, init);
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return default_nss_flags;
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}
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