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-rw-r--r--nis/nis_defaults.c466
1 files changed, 466 insertions, 0 deletions
diff --git a/nis/nis_defaults.c b/nis/nis_defaults.c
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+++ b/nis/nis_defaults.c
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+/* Copyright (c) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <rpc/rpc.h>
+#include <rpcsvc/nis.h>
+#include <rpcsvc/nislib.h>
+
+#define DEFAULT_TTL 43200
+
+/*
+** Some functions for parsing the -D param and NIS_DEFAULTS Environ
+*/
+static nis_name
+searchgroup (char *str)
+{
+ static char default_group[NIS_MAXNAMELEN];
+ char *cptr;
+ int i;
+
+ cptr = strstr (str, "group=");
+ if (cptr == NULL)
+ return NULL;
+
+ cptr += 6; /* points to the begin of the group string */
+ i = 0;
+ while (cptr[i] != '\0' && cptr[i] != ':')
+ i++;
+ if (i == 0) /* only "group=" ? */
+ return (nis_name)"";
+
+ strncpy (default_group, cptr, i);
+
+ return default_group;
+}
+
+static nis_name
+searchowner (char *str)
+{
+ static char default_owner[NIS_MAXNAMELEN];
+ char *cptr;
+ int i;
+
+ cptr = strstr (str, "owner=");
+ if (cptr == NULL)
+ return NULL;
+
+ cptr += 6; /* points to the begin of the owner string */
+ i = 0;
+ while (cptr[i] != '\0' && cptr[i] != ':')
+ i++;
+ if (i == 0) /* only "owner=" ? */
+ return (nis_name)"";
+
+ strncpy (default_owner, cptr, i);
+
+ return default_owner;
+}
+
+static u_long
+searchttl (char *str)
+{
+ char buf[1024];
+ char *cptr, *dptr;
+ u_long 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);
+ 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 u_long
+searchaccess (char *str, u_long access)
+{
+ static char buf[NIS_MAXNAMELEN];
+ char *cptr;
+ u_long result;
+ 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);
+
+ result = n = o = g = w = 0;
+ cptr = buf;
+ 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:
+ fprintf (stderr, "Parse error in \"%s\"\n", buf);
+ return 0;
+ }
+ cptr++;
+ }
+ 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:
+ fprintf (stderr, "Parse error in \"%s\"\n", buf);
+ return 0;
+ }
+ cptr++;
+ }
+ 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:
+ fprintf (stderr, "Parse error in \"%s\"\n", buf);
+ return 0;
+ }
+ cptr++;
+ }
+ break;
+ default:
+ fprintf (stderr, "Parse error in \"%s\"\n", buf);
+ return 0;
+ }
+ cptr++;
+ }
+
+ return 0;
+}
+
+nis_name
+__nis_default_owner (char *defaults)
+{
+ static char default_owner[NIS_MAXNAMELEN];
+ char *cptr, *dptr;
+
+ strcpy (default_owner, nis_local_principal ());
+
+ if (defaults != NULL)
+ {
+ dptr = strstr (defaults, "owner=");
+ if (dptr != NULL)
+ strcpy (default_owner, searchowner (defaults));
+ }
+ else
+ {
+ cptr = getenv ("NIS_DEFAULTS");
+ if (cptr != NULL)
+ {
+ dptr = strstr (cptr, "owner=");
+ if (dptr != NULL)
+ strcpy (default_owner, searchowner (cptr));
+ }
+ }
+
+ return default_owner;
+}
+
+nis_name
+__nis_default_group (char *defaults)
+{
+ static char default_group[NIS_MAXNAMELEN];
+ char *cptr, *dptr;
+
+ strcpy (default_group, nis_local_group ());
+
+ if (defaults != NULL)
+ {
+ dptr = strstr (defaults, "group=");
+ if (dptr != NULL)
+ strcpy (default_group, searchgroup (defaults));
+ }
+ else
+ {
+ cptr = getenv ("NIS_DEFAULTS");
+ if (cptr != NULL)
+ {
+ dptr = strstr (cptr, "group=");
+ if (dptr != NULL)
+ strcpy (default_group, searchgroup (cptr));
+ }
+ }
+
+ return default_group;
+}
+
+u_long
+__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);
+}
+
+/* Default access rights are ----rmcdr---r---, but we could change
+ this with the NIS_DEFAULTS variable. */
+u_long
+__nis_default_access (char *param, u_long defaults)
+{
+ u_long 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 (getenv ("NIS_DEFAULTS"), result);
+ }
+
+ return result;
+}
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