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glibc/nis/nis_defaults.c
Siddhesh Poyarekar 30891f35fa Remove "Contributed by" lines 
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>
2021-09-03 22:06:44 +05:30

457 lines
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/* Copyright (c) 1997-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <sys/types.h>
#include <rpc/rpc.h>
#include <rpcsvc/nis.h>
#include <shlib-compat.h>
#define DEFAULT_TTL 43200
/*
** Some functions for parsing the -D param and NIS_DEFAULTS Environ
*/
static nis_name
searchXYX (char *str, const char *what)
{
assert (strlen (what) == 6);
assert (strncmp (str, what, 6) == 0);
str += 6; /* Points to the begin of the parameters. */
int i = 0;
while (str[i] != '\0' && str[i] != ':')
++i;
if (i == 0) /* only "<WHAT>=" ? */
return strdup ("");
return strndup (str, i);
}
static nis_name
searchgroup (char *str)
{
return searchXYX (str, "group=");
}
static nis_name
searchowner (char *str)
{
return searchXYX (str, "owner=");
}
static uint32_t
searchttl (char *str)
{
char buf[strlen (str) + 1];
char *cptr, *dptr;
uint32_t time;
int i;
dptr = strstr (str, "ttl=");
if (dptr == NULL) /* should (could) not happen */
return DEFAULT_TTL;;
dptr += 4; /* points to the begin of the new ttl */
i = 0;
while (dptr[i] != '\0' && dptr[i] != ':')
i++;
if (i == 0) /* only "ttl=" ? */
return DEFAULT_TTL;
strncpy (buf, dptr, i);
buf[i] = '\0';
time = 0;
dptr = buf;
cptr = strchr (dptr, 'd');
if (cptr != NULL)
{
*cptr = '\0';
cptr++;
time += atoi (dptr) * 60 * 60 * 24;
dptr = cptr;
}
cptr = strchr (dptr, 'h');
if (cptr != NULL)
{
*cptr = '\0';
cptr++;
time += atoi (dptr) * 60 * 60;
dptr = cptr;
}
cptr = strchr (dptr, 'm');
if (cptr != NULL)
{
*cptr = '\0';
cptr++;
time += atoi (dptr) * 60;
dptr = cptr;
}
cptr = strchr (dptr, 's');
if (cptr != NULL)
*cptr = '\0';
time += atoi (dptr);
return time;
}
static unsigned int
searchaccess (char *str, unsigned int access)
{
char buf[strlen (str) + 1];
char *cptr;
unsigned int result = access;
int i;
int n, o, g, w;
cptr = strstr (str, "access=");
if (cptr == NULL)
return 0;
cptr += 7; /* points to the begin of the access string */
i = 0;
while (cptr[i] != '\0' && cptr[i] != ':')
i++;
if (i == 0) /* only "access=" ? */
return 0;
strncpy (buf, cptr, i);
buf[i] = '\0';
n = o = g = w = 0;
cptr = buf;
if (*cptr == ',') /* Fix for stupid Solaris scripts */
++cptr;
while (*cptr != '\0')
{
switch (*cptr)
{
case 'n':
n = 1;
break;
case 'o':
o = 1;
break;
case 'g':
g = 1;
break;
case 'w':
w = 1;
break;
case 'a':
o = g = w = 1;
break;
case '-':
cptr++; /* Remove "-" from beginning */
while (*cptr != '\0' && *cptr != ',')
{
switch (*cptr)
{
case 'r':
if (n)
result = result & ~(NIS_READ_ACC << 24);
if (o)
result = result & ~(NIS_READ_ACC << 16);
if (g)
result = result & ~(NIS_READ_ACC << 8);
if (w)
result = result & ~(NIS_READ_ACC);
break;
case 'm':
if (n)
result = result & ~(NIS_MODIFY_ACC << 24);
if (o)
result = result & ~(NIS_MODIFY_ACC << 16);
if (g)
result = result & ~(NIS_MODIFY_ACC << 8);
if (w)
result = result & ~(NIS_MODIFY_ACC);
break;
case 'c':
if (n)
result = result & ~(NIS_CREATE_ACC << 24);
if (o)
result = result & ~(NIS_CREATE_ACC << 16);
if (g)
result = result & ~(NIS_CREATE_ACC << 8);
if (w)
result = result & ~(NIS_CREATE_ACC);
break;
case 'd':
if (n)
result = result & ~(NIS_DESTROY_ACC << 24);
if (o)
result = result & ~(NIS_DESTROY_ACC << 16);
if (g)
result = result & ~(NIS_DESTROY_ACC << 8);
if (w)
result = result & ~(NIS_DESTROY_ACC);
break;
default:
return (~0U);
}
cptr++;
}
n = o = g = w = 0;
break;
case '+':
cptr++; /* Remove "+" from beginning */
while (*cptr != '\0' && *cptr != ',')
{
switch (*cptr)
{
case 'r':
if (n)
result = result | (NIS_READ_ACC << 24);
if (o)
result = result | (NIS_READ_ACC << 16);
if (g)
result = result | (NIS_READ_ACC << 8);
if (w)
result = result | (NIS_READ_ACC);
break;
case 'm':
if (n)
result = result | (NIS_MODIFY_ACC << 24);
if (o)
result = result | (NIS_MODIFY_ACC << 16);
if (g)
result = result | (NIS_MODIFY_ACC << 8);
if (w)
result = result | (NIS_MODIFY_ACC);
break;
case 'c':
if (n)
result = result | (NIS_CREATE_ACC << 24);
if (o)
result = result | (NIS_CREATE_ACC << 16);
if (g)
result = result | (NIS_CREATE_ACC << 8);
if (w)
result = result | (NIS_CREATE_ACC);
break;
case 'd':
if (n)
result = result | (NIS_DESTROY_ACC << 24);
if (o)
result = result | (NIS_DESTROY_ACC << 16);
if (g)
result = result | (NIS_DESTROY_ACC << 8);
if (w)
result = result | (NIS_DESTROY_ACC);
break;
default:
return (~0U);
}
cptr++;
}
n = o = g = w = 0;
break;
case '=':
cptr++; /* Remove "=" from beginning */
/* Clear */
if (n)
result = result & ~((NIS_READ_ACC + NIS_MODIFY_ACC
+ NIS_CREATE_ACC + NIS_DESTROY_ACC) << 24);
if (o)
result = result & ~((NIS_READ_ACC + NIS_MODIFY_ACC
+ NIS_CREATE_ACC + NIS_DESTROY_ACC) << 16);
if (g)
result = result & ~((NIS_READ_ACC + NIS_MODIFY_ACC
+ NIS_CREATE_ACC + NIS_DESTROY_ACC) << 8);
if (w)
result = result & ~(NIS_READ_ACC + NIS_MODIFY_ACC
+ NIS_CREATE_ACC + NIS_DESTROY_ACC);
while (*cptr != '\0' && *cptr != ',')
{
switch (*cptr)
{
case 'r':
if (n)
result = result | (NIS_READ_ACC << 24);
if (o)
result = result | (NIS_READ_ACC << 16);
if (g)
result = result | (NIS_READ_ACC << 8);
if (w)
result = result | (NIS_READ_ACC);
break;
case 'm':
if (n)
result = result | (NIS_MODIFY_ACC << 24);
if (o)
result = result | (NIS_MODIFY_ACC << 16);
if (g)
result = result | (NIS_MODIFY_ACC << 8);
if (w)
result = result | (NIS_MODIFY_ACC);
break;
case 'c':
if (n)
result = result | (NIS_CREATE_ACC << 24);
if (o)
result = result | (NIS_CREATE_ACC << 16);
if (g)
result = result | (NIS_CREATE_ACC << 8);
if (w)
result = result | (NIS_CREATE_ACC);
break;
case 'd':
if (n)
result = result | (NIS_DESTROY_ACC << 24);
if (o)
result = result | (NIS_DESTROY_ACC << 16);
if (g)
result = result | (NIS_DESTROY_ACC << 8);
if (w)
result = result | (NIS_DESTROY_ACC);
break;
default:
return result = (~0U);
}
cptr++;
}
n = o = g = w = 0;
break;
default:
return result = (~0U);
}
if (*cptr != '\0')
cptr++;
}
return result;
}
nis_name
__nis_default_owner (char *defaults)
{
char *default_owner = NULL;
char *cptr = defaults;
if (cptr == NULL)
cptr = getenv ("NIS_DEFAULTS");
if (cptr != NULL)
{
char *dptr = strstr (cptr, "owner=");
if (dptr != NULL)
{
char *p = searchowner (dptr);
if (p == NULL)
return NULL;
default_owner = strdupa (p);
free (p);
}
}
return strdup (default_owner ?: nis_local_principal ());
}
libnsl_hidden_nolink_def (__nis_default_owner, GLIBC_2_1)
nis_name
__nis_default_group (char *defaults)
{
char *default_group = NULL;
char *cptr = defaults;
if (cptr == NULL)
cptr = getenv ("NIS_DEFAULTS");
if (cptr != NULL)
{
char *dptr = strstr (cptr, "group=");
if (dptr != NULL)
{
char *p = searchgroup (dptr);
if (p == NULL)
return NULL;
default_group = strdupa (p);
free (p);
}
}
return strdup (default_group ?: nis_local_group ());
}
libnsl_hidden_nolink_def (__nis_default_group, GLIBC_2_1)
uint32_t
__nis_default_ttl (char *defaults)
{
char *cptr, *dptr;
if (defaults != NULL)
{
dptr = strstr (defaults, "ttl=");
if (dptr != NULL)
return searchttl (defaults);
}
cptr = getenv ("NIS_DEFAULTS");
if (cptr == NULL)
return DEFAULT_TTL;
dptr = strstr (cptr, "ttl=");
if (dptr == NULL)
return DEFAULT_TTL;
return searchttl (cptr);
}
libnsl_hidden_nolink_def (__nis_default_ttl, GLIBC_2_1)
/* Default access rights are ----rmcdr---r---, but we could change
this with the NIS_DEFAULTS variable. */
unsigned int
__nis_default_access (char *param, unsigned int defaults)
{
unsigned int result;
char *cptr;
if (defaults == 0)
result = 0 | OWNER_DEFAULT | GROUP_DEFAULT | WORLD_DEFAULT;
else
result = defaults;
if (param != NULL && strstr (param, "access=") != NULL)
result = searchaccess (param, result);
else
{
cptr = getenv ("NIS_DEFAULTS");
if (cptr != NULL && strstr (cptr, "access=") != NULL)
result = searchaccess (cptr, result);
}
return result;
}
libnsl_hidden_nolink_def (__nis_default_access, GLIBC_2_1)
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