nss: Remove cryptographic key support from nss_files, nss_nis, nss_nisplus

The interface has hard-coded buffer sizes and is therefore tied to
DES.  It also does not match current practice where different
services on the same host use different key material.

This change simplifies removal of the sunrpc code.

1 files changed, 0 insertions, 234 deletions

diff --git a/nis/nss_nis/nis-publickey.c b/nis/nss_nis/nis-publickey.c
deleted file mode 100644
index adbc04b..0000000
--- a/nis/nss_nis/nis-publickey.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
-
-   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 <nss.h>
-#include <ctype.h>
-#include <errno.h>
-#include <string.h>
-#include <syslog.h>
-#include <rpc/rpc.h>
-#include <rpcsvc/yp.h>
-#include <rpcsvc/ypclnt.h>
-#include <rpc/key_prot.h>
-#include <rpc/des_crypt.h>
-
-#include "nss-nis.h"
-
-/* If we haven't found the entry, we give a SUCCESS and an empty key back.
-   Solaris docu says: sizeof (pkey) == HEXKEYBYTES + 1.
-*/
-enum nss_status
-_nss_nis_getpublickey (const char *netname, char *pkey, int *errnop)
-{
-  pkey[0] = 0;
-
-  if (netname == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  char *domain = strchr (netname, '@');
-  if (domain == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-  ++domain;
-
-  char *result;
-  int len;
-  int yperr = yp_match (domain, "publickey.byname", netname, strlen (netname),
-			&result, &len);
-
-  if (__glibc_unlikely (yperr != YPERR_SUCCESS))
-    {
-      enum nss_status retval = yperr2nss (yperr);
-
-      if (retval == NSS_STATUS_TRYAGAIN)
-	*errnop = errno;
-      return retval;
-    }
-
-  if (result != NULL)
-    {
-      char *p = strchr (result, ':');
-      if (p != NULL)
-	*p = 0;
-      strncpy (pkey, result, HEXKEYBYTES + 1);
-      pkey[HEXKEYBYTES] = '\0';
-      free (result);
-    }
-  return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nis_getsecretkey (const char *netname, char *skey, char *passwd,
-		       int *errnop)
-{
-  skey[0] = 0;
-
-  if (netname == NULL || passwd == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  char *domain = strchr (netname, '@');
-  if (domain == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-  ++domain;
-
-  char *result;
-  int len;
-  int yperr = yp_match (domain, "publickey.byname", netname, strlen (netname),
-			&result, &len);
-
-  if (__glibc_unlikely (yperr != YPERR_SUCCESS))
-    {
-      enum nss_status retval = yperr2nss (yperr);
-
-      if (retval == NSS_STATUS_TRYAGAIN)
-	*errnop = errno;
-      return retval;
-    }
-
-  if (result != NULL)
-    {
-      char *p = strchr (result, ':');
-      if (p != NULL)
-	{
-	  char buf[2 * (HEXKEYBYTES + 1)];
-
-	  ++p;
-	  strncpy (buf, p, 2 * (HEXKEYBYTES + 1));
-	  buf[2 * HEXKEYBYTES + 1] = '\0';
-	  if (xdecrypt (buf, passwd)
-	      && memcmp (buf, &(buf[HEXKEYBYTES]), KEYCHECKSUMSIZE) == 0)
-	    {
-	      buf[HEXKEYBYTES] = '\0';
-	      strcpy (skey, buf);
-	    }
-	}
-
-      free (result);
-    }
-  return NSS_STATUS_SUCCESS;
-}
-
-/* Parse uid and group information from the passed string.
-   The format of the string passed is uid:gid,grp,grp, ...  */
-static enum nss_status
-parse_netid_str (const char *s, uid_t *uidp, gid_t *gidp, int *gidlenp,
-		 gid_t *gidlist)
-{
-  char *p, *ep;
-  int gidlen;
-
-  if (!s || !isdigit (*s))
-    {
-      syslog (LOG_ERR, "netname2user: expecting uid '%s'", s);
-      return NSS_STATUS_NOTFOUND;	/* XXX need a better error */
-    }
-
-  /* Fetch the uid */
-  *uidp = strtoul (s, NULL, 10);
-
-  if (*uidp == 0)
-    {
-      syslog (LOG_ERR, "netname2user: should not have uid 0");
-      return NSS_STATUS_NOTFOUND;
-    }
-
-  /* Now get the group list */
-  p = strchr (s, ':');
-  if (!p)
-    {
-      syslog (LOG_ERR, "netname2user: missing group id list in '%s'", s);
-      return NSS_STATUS_NOTFOUND;
-    }
-  ++p;				/* skip ':' */
-  if (!p || (!isdigit (*p)))
-    {
-      syslog (LOG_ERR, "netname2user: missing group id list in '%s'.", p);
-      return NSS_STATUS_NOTFOUND;
-    }
-
-  *gidp = strtoul (p, &ep, 10);
-
-  gidlen = 0;
-
-  /* After strtoul() ep should point to the first invalid character.
-     This is the marker "," we search for the next value.  */
-  while (ep != NULL && *ep == ',')
-    {
-      ep++;
-      p = ep;
-      gidlist[gidlen++] = strtoul (p, &ep, 10);
-    }
-
-  *gidlenp = gidlen;
-
-  return NSS_STATUS_SUCCESS;
-}
-
-
-enum nss_status
-_nss_nis_netname2user (char netname[MAXNETNAMELEN + 1], uid_t *uidp,
-		       gid_t *gidp, int *gidlenp, gid_t *gidlist, int *errnop)
-{
-  char *domain = strchr (netname, '@');
-  if (domain == NULL)
-    {
-      *errnop = EINVAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  /* Point past the '@' character */
-  ++domain;
-  char *lookup = NULL;
-  int len;
-  int yperr = yp_match (domain, "netid.byname", netname, strlen (netname),
-			&lookup, &len);
-  switch (yperr)
-    {
-    case YPERR_SUCCESS:
-      break;			/* the successful case */
-    case YPERR_DOMAIN:
-    case YPERR_KEY:
-      return NSS_STATUS_NOTFOUND;
-    case YPERR_MAP:
-    default:
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  if (lookup == NULL)
-    return NSS_STATUS_NOTFOUND;
-
-
-  lookup[len] = '\0';
-
-  enum nss_status err = parse_netid_str (lookup, uidp, gidp, gidlenp, gidlist);
-
-  free (lookup);
-
-  return err;
-}