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Diffstat (limited to 'nis/nss_nisplus/nisplus-publickey.c')
-rw-r--r--nis/nss_nisplus/nisplus-publickey.c347
1 files changed, 347 insertions, 0 deletions
diff --git a/nis/nss_nisplus/nisplus-publickey.c b/nis/nss_nisplus/nisplus-publickey.c
new file mode 100644
index 0000000000..7312c91229
--- /dev/null
+++ b/nis/nss_nisplus/nisplus-publickey.c
@@ -0,0 +1,347 @@
+/* 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 <nss.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <syslog.h>
+#include <rpc/key_prot.h>
+#include <rpcsvc/nis.h>
+#include <rpcsvc/nislib.h>
+
+#include <nss-nisplus.h>
+
+extern int xdecrypt (char *, char *);
+
+/* If we found the entry, we give a SUCCESS and an empty key back. */
+enum nss_status
+_nss_nisplus_getpublickey (const char *netname, char *pkey)
+{
+  nis_result *res;
+  enum nss_status retval;
+  char buf[NIS_MAXNAMELEN+2];
+  char *domain, *cptr;
+  int len;
+
+  pkey[0] = 0;
+
+  if (netname == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  domain = strchr (netname, '@');
+  if (!domain)
+    return NSS_STATUS_UNAVAIL;
+  domain++;
+
+  snprintf (buf, NIS_MAXNAMELEN,
+	    "[auth_name=%s,auth_type=DES],cred.org_dir.%s",
+	    netname, domain);
+
+  if (buf[strlen (buf)-1] != '.')
+    strcat(buf, ".");
+
+  res = nis_list(buf, USE_DGRAM+NO_AUTHINFO+FOLLOW_LINKS+FOLLOW_PATH,
+		 NULL, NULL);
+
+  retval = niserr2nss (res->status);
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+	__set_errno (EAGAIN);
+      nis_freeresult (res);
+      return retval;
+    }
+
+  if (res->objects.objects_len > 1)
+    {
+      /*
+       * More than one principal with same uid?
+       * something wrong with cred table. Should be unique
+       * Warn user and continue.
+       */
+      printf (_("DES entry for netname %s not unique\n"), netname);
+      nis_freeresult (res);
+      return NSS_STATUS_SUCCESS;
+    }
+
+  len = ENTRY_LEN (res->objects.objects_val, 3);
+  memcpy (pkey, ENTRY_VAL (res->objects.objects_val,3), len);
+  pkey[len] = 0;
+  cptr = strchr (pkey, ':');
+  if (cptr)
+    cptr[0] = '\0';
+  nis_freeresult (res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nisplus_getsecretkey (const char *netname, char *skey, char *passwd)
+{
+  nis_result *res;
+  enum nss_status retval;
+  char buf[NIS_MAXNAMELEN+2];
+  char *domain, *cptr;
+  int len;
+
+  skey[0] = 0;
+
+  if (netname == NULL)
+    {
+      __set_errno (EINVAL);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  domain = strchr (netname, '@');
+  if (!domain)
+    return NSS_STATUS_UNAVAIL;
+  domain++;
+
+  snprintf (buf, NIS_MAXNAMELEN,
+	    "[auth_name=%s,auth_type=DES],cred.org_dir.%s",
+	    netname, domain);
+
+  if (buf[strlen(buf)-1] != '.')
+    strcat(buf, ".");
+
+  res = nis_list (buf, USE_DGRAM+NO_AUTHINFO+FOLLOW_LINKS+FOLLOW_PATH,
+		  NULL, NULL);
+
+  retval = niserr2nss (res->status);
+
+  if (retval != NSS_STATUS_SUCCESS)
+    {
+      if (retval == NSS_STATUS_TRYAGAIN)
+	__set_errno (EAGAIN);
+      nis_freeresult (res);
+      return retval;
+    }
+
+  if (res->objects.objects_len > 1)
+    {
+      /*
+       * More than one principal with same uid?
+       * something wrong with cred table. Should be unique
+       * Warn user and continue.
+       */
+      printf (_("DES entry for netname %s not unique\n"), netname);
+      nis_freeresult (res);
+      return NSS_STATUS_SUCCESS;
+    }
+
+  len = ENTRY_LEN (res->objects.objects_val, 4);
+  memcpy (buf, ENTRY_VAL (res->objects.objects_val,4), len);
+  skey[len] = 0;
+  cptr = strchr (skey, ':');
+  if (cptr)
+    cptr[0] = '\0';
+  nis_freeresult (res);
+
+  if (!xdecrypt (buf, passwd))
+    return NSS_STATUS_SUCCESS;
+
+  if (memcmp (buf, &(buf[HEXKEYBYTES]), KEYCHECKSUMSIZE) != 0)
+    return NSS_STATUS_SUCCESS;
+
+  buf[HEXKEYBYTES] = 0;
+  strcpy (skey, buf);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+/* Parse information from the passed string.
+   The format of the string passed is gid,grp,grp, ...  */
+static enum nss_status
+parse_grp_str (const char *s, gid_t *gidp, int *gidlenp, gid_t *gidlist)
+{
+  int gidlen;
+
+  if (!s || (!isdigit (*s)))
+    {
+      syslog (LOG_ERR, "netname2user: missing group id list in '%s'.", s);
+      return NSS_STATUS_NOTFOUND;
+    }
+
+  *gidp = (atoi (s));
+
+  gidlen = 0;
+
+  while ((s = strchr (s, ',')) != NULL)
+    {
+      s++;
+      gidlist[gidlen++] = atoi (s);
+    }
+  *gidlenp = gidlen;
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nisplus_netname2user (char netname[MAXNETNAMELEN + 1], uid_t *uidp,
+		       gid_t *gidp, int *gidlenp, gid_t *gidlist)
+{
+  char *domain;
+  nis_result *res;
+  char sname[NIS_MAXNAMELEN+1]; /*  search criteria + table name */
+  char principal[NIS_MAXNAMELEN+1];
+  int len;
+
+  /* 1.  Get home domain of user. */
+  domain = strchr (netname, '@');
+  if (! domain)
+    return NSS_STATUS_UNAVAIL;
+
+  domain++;  /* skip '@' */
+
+  /* 2.  Get user's nisplus principal name.  */
+  if ((strlen (netname) + strlen (domain)+45) >
+      (size_t) NIS_MAXNAMELEN)
+    return NSS_STATUS_UNAVAIL;
+
+  snprintf (sname, NIS_MAXNAMELEN,
+	    "[auth_name=%s,auth_type=DES],cred.org_dir.%s",
+	    netname, domain);
+  if (sname[strlen (sname) - 1] != '.')
+    strcat(sname, ".");
+
+  /* must use authenticated call here */
+  /* XXX but we cant, for now. XXX */
+  res = nis_list (sname, USE_DGRAM+NO_AUTHINFO+FOLLOW_LINKS+FOLLOW_PATH,
+		  NULL, NULL);
+  switch(res->status)
+    {
+    case NIS_SUCCESS:
+    case NIS_S_SUCCESS:
+      break;   /* go and do something useful */
+    case NIS_NOTFOUND:
+    case NIS_PARTIAL:
+    case NIS_NOSUCHNAME:
+    case NIS_NOSUCHTABLE:
+      nis_freeresult (res);
+      return NSS_STATUS_NOTFOUND;
+    case NIS_S_NOTFOUND:
+    case NIS_TRYAGAIN:
+      syslog (LOG_ERR, "netname2user: (nis+ lookup): %s\n",
+	      nis_sperrno (res->status));
+      nis_freeresult (res);
+      return NSS_STATUS_TRYAGAIN;
+    default:
+      syslog (LOG_ERR, "netname2user: (nis+ lookup): %s\n",
+	      nis_sperrno (res->status));
+      nis_freeresult (res);
+      return NSS_STATUS_UNAVAIL;
+    }
+
+  if (res->objects.objects_len > 1)
+    {
+      /*
+       * A netname belonging to more than one principal?
+       * Something wrong with cred table. should be unique.
+       * Warn user and continue.
+       */
+      syslog (LOG_ALERT,
+	      _("netname2user: DES entry for %s in directory %s not unique"),
+	      netname, domain);
+    }
+
+  len = ENTRY_LEN(res->objects.objects_val, 0);
+  strncpy(principal, ENTRY_VAL(res->objects.objects_val, 0), len);
+  principal[len] = '\0';
+  nis_freeresult(res);
+
+  if (principal[0] == '\0')
+    return NSS_STATUS_UNAVAIL;
+
+  /*
+   *      3.  Use principal name to look up uid/gid information in
+   *      LOCAL entry in **local** cred table.
+   */
+  domain = nis_local_directory ();
+  if ((strlen(principal)+strlen(domain)+45) >
+      (size_t) NIS_MAXNAMELEN)
+    {
+      syslog (LOG_ERR, _("netname2user: principal name '%s' too long"),
+	      principal);
+      return NSS_STATUS_UNAVAIL;
+    }
+  sprintf(sname, "[cname=%s,auth_type=LOCAL],cred.org_dir.%s",
+	  principal, domain);
+  if (sname[strlen(sname) - 1] != '.')
+    strcat(sname, ".");
+
+  /* must use authenticated call here */
+  /* XXX but we cant, for now. XXX */
+  res = nis_list(sname, USE_DGRAM+NO_AUTHINFO+FOLLOW_LINKS+FOLLOW_PATH,
+		 NULL, NULL);
+  switch(res->status) {
+  case NIS_NOTFOUND:
+  case NIS_PARTIAL:
+  case NIS_NOSUCHNAME:
+  case NIS_NOSUCHTABLE:
+    nis_freeresult (res);
+    return NSS_STATUS_NOTFOUND;
+  case NIS_S_NOTFOUND:
+  case NIS_TRYAGAIN:
+    syslog (LOG_ERR,
+	    "netname2user: (nis+ lookup): %s\n",
+	    nis_sperrno (res->status));
+    nis_freeresult (res);
+    return NSS_STATUS_TRYAGAIN;
+  case NIS_SUCCESS:
+  case NIS_S_SUCCESS:
+    break;   /* go and do something useful */
+  default:
+    syslog (LOG_ERR, "netname2user: (nis+ lookup): %s\n",
+	    nis_sperrno (res->status));
+    nis_freeresult (res);
+    return NSS_STATUS_UNAVAIL;
+  }
+
+  if (res->objects.objects_len > 1)
+    {
+      /*
+       * A principal can have more than one LOCAL entry?
+       * Something wrong with cred table.
+       * Warn user and continue.
+       */
+      syslog(LOG_ALERT,
+	     _("netname2user: LOCAL entry for %s in directory %s not unique"),
+	     netname, domain);
+    }
+  /* Fetch the uid */
+  *uidp = (atoi (ENTRY_VAL (res->objects.objects_val, 2)));
+
+  if (*uidp == 0)
+    {
+      syslog (LOG_ERR, _("netname2user: should not have uid 0"));
+      return NSS_STATUS_NOTFOUND;
+    }
+
+  parse_grp_str (ENTRY_VAL (res->objects.objects_val, 3),
+		 gidp, gidlenp, gidlist);
+
+  nis_freeresult (res);
+  return NSS_STATUS_SUCCESS;
+}
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