/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */


/*
 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 *
 *      Openvision retains the copyright to derivative works of
 *      this source code.  Do *NOT* create a derivative of this
 *      source code before consulting with your legal department.
 *      Do *NOT* integrate *ANY* of this source code into another
 *      product before consulting with your legal department.
 *
 *      For further information, read the top-level Openvision
 *      copyright which is contained in the top-level MIT Kerberos
 *      copyright.
 *
 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 *
 */


/*
 * Copyright 1993 OpenVision Technologies, Inc., All Rights Reserved
 */

#include <rpc/rpc.h>
#include <errno.h>
#include <kadm5/admin.h>
#include <kadm5/kadm_rpc.h>
#include <krb5.h>
#include <stdlib.h>
#include <string.h>

static bool_t
_xdr_kadm5_principal_ent_rec(XDR *xdrs, kadm5_principal_ent_rec *objp,
                             int v);

bool_t
xdr_krb5_salttype(XDR *xdrs, krb5_int32 *objp); /* SUNWresync121 XXX */
/*
 * Function: xdr_ui_4
 *
 * Purpose: XDR function which serves as a wrapper for xdr_u_int,
 * to prevent compiler warnings about type clashes between u_int32
 * and krb5_ui_4.
 */
bool_t xdr_ui_4(XDR *xdrs, krb5_ui_4 *objp)
{
  /* Assumes that krb5_ui_4 and u_int32 are both four bytes long.
     This should not be a harmful assumption. */
  return xdr_u_int(xdrs, (uint32_t *) objp);
}


/*
 * Function: xdr_nullstring
 *
 * Purpose: XDR function for "strings" that are either NULL-terminated
 * or NULL.
 */
bool_t xdr_nullstring(XDR *xdrs, char **objp)
{
     u_int size;

     if (xdrs->x_op == XDR_ENCODE) {
          if (*objp == NULL)
               size = 0;
          else
               size = strlen(*objp) + 1;
     }
     if (! xdr_u_int(xdrs, &size)) {
          return FALSE;
        }
     switch (xdrs->x_op) {
     case XDR_DECODE:
          if (size == 0) {
               *objp = NULL;
               return TRUE;
          } else if (*objp == NULL) {
               *objp = (char *) mem_alloc(size);
               if (*objp == NULL) {
                    errno = ENOMEM;
                    return FALSE;
               }
          }
          return (xdr_opaque(xdrs, *objp, size));

     case XDR_ENCODE:
          if (size != 0)
               return (xdr_opaque(xdrs, *objp, size));
          return TRUE;

     case XDR_FREE:
          if (*objp != NULL)
               mem_free(*objp, size);
          *objp = NULL;
          return TRUE;
     }

     return FALSE;
}

/*
 * Function: xdr_nulltype
 *
 * Purpose: XDR function for arbitrary pointer types that are either
 * NULL or contain data.
 */
bool_t xdr_nulltype(XDR *xdrs, void **objp, xdrproc_t proc)
{
     bool_t null;

     switch (xdrs->x_op) {
     case XDR_DECODE:
          if (!xdr_bool(xdrs, &null))
              return FALSE;
          if (null) {
               *objp = NULL;
               return TRUE;
          }
          return (*proc)(xdrs, objp);

     case XDR_ENCODE:
          if (*objp == NULL)
               null = TRUE;
          else
               null = FALSE;
          if (!xdr_bool(xdrs, &null))
               return FALSE;
          if (null == FALSE)
               return (*proc)(xdrs, objp);
          return TRUE;

     case XDR_FREE:
          if (*objp)
               return (*proc)(xdrs, objp);
          return TRUE;
     }

     return FALSE;
}

bool_t
xdr_krb5_timestamp(XDR *xdrs, krb5_timestamp *objp)
{
  /* This assumes that int32 and krb5_timestamp are the same size.
     This shouldn't be a problem, since we've got a unit test which
     checks for this. */
        if (!xdr_int(xdrs, (int32_t *) objp)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_krb5_kvno(XDR *xdrs, krb5_kvno *objp)
{
        unsigned char tmp;

        tmp = '\0'; /* for purify, else xdr_u_char performs a umr */

        if (xdrs->x_op == XDR_ENCODE)
                tmp = (unsigned char) *objp;

        if (!xdr_u_char(xdrs, &tmp))
                return (FALSE);

        if (xdrs->x_op == XDR_DECODE)
                *objp = (krb5_kvno) tmp;

        return (TRUE);
}

bool_t
xdr_krb5_deltat(XDR *xdrs, krb5_deltat *objp)
{
  /* This assumes that int32 and krb5_deltat are the same size.
     This shouldn't be a problem, since we've got a unit test which
     checks for this. */
        if (!xdr_int(xdrs, (int32_t *) objp)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_krb5_flags(XDR *xdrs, krb5_flags *objp)
{
  /* This assumes that int32 and krb5_flags are the same size.
     This shouldn't be a problem, since we've got a unit test which
     checks for this. */
        if (!xdr_int(xdrs, (int32_t *) objp)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_krb5_ui_4(XDR *xdrs, krb5_ui_4 *objp)
{
        if (!xdr_u_int(xdrs, (uint32_t *) objp)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_krb5_int16(XDR *xdrs, krb5_int16 *objp)
{
    int tmp;

    tmp = (int) *objp;

    if (!xdr_int(xdrs, &tmp))
        return(FALSE);

    *objp = (krb5_int16) tmp;

    return(TRUE);
}

/*
 * Function: xdr_krb5_ui_2
 *
 * Purpose: XDR function which serves as a wrapper for xdr_u_int,
 * to prevent compiler warnings about type clashes between u_int
 * and krb5_ui_2.
 */
bool_t
xdr_krb5_ui_2(XDR *xdrs, krb5_ui_2 *objp)
{
    unsigned int tmp;

    tmp = (unsigned int) *objp;

    if (!xdr_u_int(xdrs, &tmp))
        return(FALSE);

    *objp = (krb5_ui_2) tmp;

    return(TRUE);
}



bool_t xdr_krb5_key_data_nocontents(XDR *xdrs, krb5_key_data *objp)
{
     /*
      * Note that this function intentionally DOES NOT tranfer key
      * length or contents!  xdr_krb5_key_data in adb_xdr.c does, but
      * that is only for use within the server-side library.
      */
     unsigned int tmp;

     if (xdrs->x_op == XDR_DECODE)
          memset((char *) objp, 0, sizeof(krb5_key_data));

     if (!xdr_krb5_int16(xdrs, &objp->key_data_ver)) {
          return (FALSE);
     }
     if (!xdr_krb5_int16(xdrs, &objp->key_data_kvno)) {
          return (FALSE);
     }
     if (!xdr_krb5_int16(xdrs, &objp->key_data_type[0])) {
          return (FALSE);
     }
     if (objp->key_data_ver > 1) {
          if (!xdr_krb5_int16(xdrs, &objp->key_data_type[1])) {
               return (FALSE);
          }
     }
     /*
      * kadm5_get_principal on the server side allocates and returns
      * key contents when asked.  Even though this function refuses to
      * transmit that data, it still has to *free* the data at the
      * appropriate time to avoid a memory leak.
      */
     if (xdrs->x_op == XDR_FREE) {
          tmp = (unsigned int) objp->key_data_length[0];
          if (!xdr_bytes(xdrs, (char **) &objp->key_data_contents[0],
                         &tmp, ~0))
               return FALSE;

          tmp = (unsigned int) objp->key_data_length[1];
          if (!xdr_bytes(xdrs, (char **) &objp->key_data_contents[1],
                         &tmp, ~0))
               return FALSE;
     }

     return (TRUE);
}


bool_t
xdr_krb5_key_salt_tuple(XDR *xdrs, krb5_key_salt_tuple *objp)
{
    if (!xdr_krb5_enctype(xdrs, &objp->ks_enctype))
        return FALSE;
    if (!xdr_krb5_salttype(xdrs, &objp->ks_salttype))
        return FALSE;
    return TRUE;
}

bool_t xdr_krb5_tl_data(XDR *xdrs, krb5_tl_data **tl_data_head)
{
     krb5_tl_data *tl, *tl2;
     bool_t more;
     unsigned int len;

     switch (xdrs->x_op) {
     case XDR_FREE:
          tl = tl2 = *tl_data_head;
          while (tl) {
               tl2 = tl->tl_data_next;
               free(tl->tl_data_contents);
               free(tl);
               tl = tl2;
          }
          break;

     case XDR_ENCODE:
          tl = *tl_data_head;
          while (1) {
               more = (tl != NULL);
               if (!xdr_bool(xdrs, &more))
                    return FALSE;
               if (tl == NULL)
                    break;
               if (!xdr_krb5_int16(xdrs, &tl->tl_data_type))
                    return FALSE;
               len = tl->tl_data_length;
               if (!xdr_bytes(xdrs, (char **) &tl->tl_data_contents, &len, ~0))
                    return FALSE;
               tl = tl->tl_data_next;
          }
          break;

     case XDR_DECODE:
          tl = NULL;
          while (1) {
               if (!xdr_bool(xdrs, &more))
                    return FALSE;
               if (more == FALSE)
                    break;
               tl2 = (krb5_tl_data *) malloc(sizeof(krb5_tl_data));
               if (tl2 == NULL)
                    return FALSE;
               memset((char *) tl2, 0, sizeof(krb5_tl_data));
               if (!xdr_krb5_int16(xdrs, &tl2->tl_data_type))
                    return FALSE;
               if (!xdr_bytes(xdrs, (char **)&tl2->tl_data_contents, &len, ~0))
                    return FALSE;
               tl2->tl_data_length = len;

               tl2->tl_data_next = tl;
               tl = tl2;
          }

          *tl_data_head = tl;
          break;
     }

     return TRUE;
}

bool_t
xdr_kadm5_ret_t(XDR *xdrs, kadm5_ret_t *objp)
{
        uint32_t tmp;

        if (xdrs->x_op == XDR_ENCODE)
                tmp = (uint32_t) *objp;

        if (!xdr_u_int(xdrs, &tmp))
                return (FALSE);

        if (xdrs->x_op == XDR_DECODE)
                *objp = (kadm5_ret_t) tmp;

        return (TRUE);
}

bool_t xdr_kadm5_principal_ent_rec_v1(XDR *xdrs,
                                      kadm5_principal_ent_rec *objp)
{
     return _xdr_kadm5_principal_ent_rec(xdrs, objp, KADM5_API_VERSION_1);
}

bool_t xdr_kadm5_principal_ent_rec(XDR *xdrs,
                                   kadm5_principal_ent_rec *objp)
{
     return _xdr_kadm5_principal_ent_rec(xdrs, objp, KADM5_API_VERSION_2);
}

static bool_t
_xdr_kadm5_principal_ent_rec(XDR *xdrs, kadm5_principal_ent_rec *objp,
                             int v)
{
     unsigned int n;

        if (!xdr_krb5_principal(xdrs, &objp->principal)) {
                return (FALSE);
        }
        if (!xdr_krb5_timestamp(xdrs, &objp->princ_expire_time)) {
                return (FALSE);
        }
        if (!xdr_krb5_timestamp(xdrs, &objp->last_pwd_change)) {
                return (FALSE);
        }
        if (!xdr_krb5_timestamp(xdrs, &objp->pw_expiration)) {
                return (FALSE);
        }
        if (!xdr_krb5_deltat(xdrs, &objp->max_life)) {
                return (FALSE);
        }
        if (v == KADM5_API_VERSION_1) {
             if (!xdr_krb5_principal(xdrs, &objp->mod_name)) {
                  return (FALSE);
             }
        } else {
             if (!xdr_nulltype(xdrs, (void **) &objp->mod_name,
                               xdr_krb5_principal)) {
                  return (FALSE);
             }
        }
        if (!xdr_krb5_timestamp(xdrs, &objp->mod_date)) {
                return (FALSE);
        }
        if (!xdr_krb5_flags(xdrs, &objp->attributes)) {
                return (FALSE);
        }
        if (!xdr_krb5_kvno(xdrs, &objp->kvno)) {
                return (FALSE);
        }
        if (!xdr_krb5_kvno(xdrs, &objp->mkvno)) {
                return (FALSE);
        }
        if (!xdr_nullstring(xdrs, &objp->policy)) {
                return (FALSE);
        }
        if (!xdr_long(xdrs, &objp->aux_attributes)) {
                return (FALSE);
        }
        if (v != KADM5_API_VERSION_1) {
             if (!xdr_krb5_deltat(xdrs, &objp->max_renewable_life)) {
                  return (FALSE);
             }
             if (!xdr_krb5_timestamp(xdrs, &objp->last_success)) {
                  return (FALSE);
             }
             if (!xdr_krb5_timestamp(xdrs, &objp->last_failed)) {
                  return (FALSE);
             }
             if (!xdr_krb5_kvno(xdrs, &objp->fail_auth_count)) {
                  return (FALSE);
             }
             if (!xdr_krb5_int16(xdrs, &objp->n_key_data)) {
                  return (FALSE);
             }
             if (!xdr_krb5_int16(xdrs, &objp->n_tl_data)) {
                  return (FALSE);
             }
             if (!xdr_nulltype(xdrs, (void **) &objp->tl_data,
                               xdr_krb5_tl_data)) {
                  return FALSE;
             }
             n = objp->n_key_data;
             if (!xdr_array(xdrs, (caddr_t *) &objp->key_data,
                            &n, ~0, sizeof(krb5_key_data),
                            xdr_krb5_key_data_nocontents)) {
                  return (FALSE);
             }
        }
        return (TRUE);
}

bool_t
xdr_kadm5_policy_ent_rec(XDR *xdrs, kadm5_policy_ent_rec *objp)
{
        if (!xdr_nullstring(xdrs, &objp->policy)) {
                return (FALSE);
        }
        /* these all used to be u_int32, but it's stupid for sized types
           to be exposed at the api, and they're the same as longs on the
           wire. */
        if (!xdr_long(xdrs, &objp->pw_min_life)) {
                return (FALSE);
        }
        if (!xdr_long(xdrs, &objp->pw_max_life)) {
                return (FALSE);
        }
        if (!xdr_long(xdrs, &objp->pw_min_length)) {
                return (FALSE);
        }
        if (!xdr_long(xdrs, &objp->pw_min_classes)) {
                return (FALSE);
        }
        if (!xdr_long(xdrs, &objp->pw_history_num)) {
                return (FALSE);
        }
        if (!xdr_long(xdrs, &objp->policy_refcnt)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_cprinc_arg(XDR *xdrs, cprinc_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (objp->api_version == KADM5_API_VERSION_1) {
             if (!xdr_kadm5_principal_ent_rec_v1(xdrs, &objp->rec)) {
                  return (FALSE);
             }
        } else {
             if (!xdr_kadm5_principal_ent_rec(xdrs, &objp->rec)) {
                  return (FALSE);
             }
        }
        if (!xdr_long(xdrs, &objp->mask)) {
                return (FALSE);
        }
        if (!xdr_nullstring(xdrs, &objp->passwd)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_cprinc3_arg(XDR *xdrs, cprinc3_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (objp->api_version == KADM5_API_VERSION_1) {
                if (!xdr_kadm5_principal_ent_rec_v1(xdrs, &objp->rec)) {
                        return (FALSE);
                }
        } else {
                if (!xdr_kadm5_principal_ent_rec(xdrs, &objp->rec)) {
                        return (FALSE);
                }
        }
        if (!xdr_long(xdrs, &objp->mask)) {
                return (FALSE);
        }
        if (!xdr_array(xdrs, (caddr_t *)&objp->ks_tuple,
                       (unsigned int *)&objp->n_ks_tuple, ~0,
                       sizeof(krb5_key_salt_tuple),
                       xdr_krb5_key_salt_tuple)) {
                return (FALSE);
        }
        if (!xdr_nullstring(xdrs, &objp->passwd)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_generic_ret(XDR *xdrs, generic_ret *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_kadm5_ret_t(xdrs, &objp->code)) {
                return (FALSE);
        }

        return(TRUE);
}

bool_t
xdr_dprinc_arg(XDR *xdrs, dprinc_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->princ)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_mprinc_arg(XDR *xdrs, mprinc_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (objp->api_version == KADM5_API_VERSION_1) {
             if (!xdr_kadm5_principal_ent_rec_v1(xdrs, &objp->rec)) {
                  return (FALSE);
             }
        } else {
             if (!xdr_kadm5_principal_ent_rec(xdrs, &objp->rec)) {
                  return (FALSE);
             }
        }
        if (!xdr_long(xdrs, &objp->mask)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_rprinc_arg(XDR *xdrs, rprinc_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->src)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->dest)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_gprincs_arg(XDR *xdrs, gprincs_arg *objp)
{
     if (!xdr_ui_4(xdrs, &objp->api_version)) {
          return (FALSE);
     }
     if (!xdr_nullstring(xdrs, &objp->exp)) {
          return (FALSE);
     }
     return (TRUE);
}

bool_t
xdr_gprincs_ret(XDR *xdrs, gprincs_ret *objp)
{
     if (!xdr_ui_4(xdrs, &objp->api_version)) {
          return (FALSE);
     }
     if (!xdr_kadm5_ret_t(xdrs, &objp->code)) {
          return (FALSE);
     }
     if (objp->code == KADM5_OK) {
          if (!xdr_int(xdrs, &objp->count)) {
               return (FALSE);
          }
          if (!xdr_array(xdrs, (caddr_t *) &objp->princs,
                         (unsigned int *) &objp->count, ~0,
                         sizeof(char *), xdr_nullstring)) {
               return (FALSE);
          }
     }

     return (TRUE);
}

bool_t
xdr_chpass_arg(XDR *xdrs, chpass_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->princ)) {
                return (FALSE);
        }
        if (!xdr_nullstring(xdrs, &objp->pass)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_chpass3_arg(XDR *xdrs, chpass3_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->princ)) {
                return (FALSE);
        }
        if (!xdr_bool(xdrs, (bool_t *) &objp->keepold)) { /* SUNWresync121 XXX */
                return (FALSE);
        }
        if (!xdr_array(xdrs, (caddr_t *)&objp->ks_tuple,
                       (unsigned int*)&objp->n_ks_tuple, ~0,
                       sizeof(krb5_key_salt_tuple),
                       xdr_krb5_key_salt_tuple)) {
                return (FALSE);
        }
        if (!xdr_nullstring(xdrs, &objp->pass)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_setv4key_arg(XDR *xdrs, setv4key_arg *objp)
{
        unsigned int n_keys = 1;

        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->princ)) {
                return (FALSE);
        }
        if (!xdr_array(xdrs, (caddr_t *) &objp->keyblock,
                       &n_keys, ~0,
                       sizeof(krb5_keyblock), xdr_krb5_keyblock)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_setkey_arg(XDR *xdrs, setkey_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->princ)) {
                return (FALSE);
        }
        if (!xdr_array(xdrs, (caddr_t *) &objp->keyblocks,
                       (unsigned int *) &objp->n_keys, ~0,
                       sizeof(krb5_keyblock), xdr_krb5_keyblock)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_setkey3_arg(XDR *xdrs, setkey3_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->princ)) {
                return (FALSE);
        }
        if (!xdr_bool(xdrs, (bool_t *) &objp->keepold)) { /* SUNWresync121 XXX */
                return (FALSE);
        }
        if (!xdr_array(xdrs, (caddr_t *) &objp->ks_tuple,
                       (unsigned int *) &objp->n_ks_tuple, ~0,
                       sizeof(krb5_key_salt_tuple), xdr_krb5_key_salt_tuple)) {
                return (FALSE);
        }
        if (!xdr_array(xdrs, (caddr_t *) &objp->keyblocks,
                       (unsigned int *) &objp->n_keys, ~0,
                       sizeof(krb5_keyblock), xdr_krb5_keyblock)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_chrand_arg(XDR *xdrs, chrand_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->princ)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_chrand3_arg(XDR *xdrs, chrand3_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->princ)) {
                return (FALSE);
        }
        if (!xdr_bool(xdrs, (bool_t *) &objp->keepold)) { /* SUNWresync121 XXX */
                return (FALSE);
        }
        if (!xdr_array(xdrs, (caddr_t *)&objp->ks_tuple,
                       (unsigned int*)&objp->n_ks_tuple, ~0,
                       sizeof(krb5_key_salt_tuple),
                       xdr_krb5_key_salt_tuple)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_chrand_ret(XDR *xdrs, chrand_ret *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_kadm5_ret_t(xdrs, &objp->code)) {
                return (FALSE);
        }
        if (objp->api_version == KADM5_API_VERSION_1) {
             if(objp->code == KADM5_OK) {
                  if (!xdr_krb5_keyblock(xdrs, &objp->key)) {
                       return (FALSE);
                  }
             }
        } else {
             if (objp->code == KADM5_OK) {
                  if (!xdr_array(xdrs, (char **)&objp->keys, (unsigned int *)&objp->n_keys, ~0,
                                 sizeof(krb5_keyblock),
                                 xdr_krb5_keyblock))
                       return FALSE;
             }
        }

        return (TRUE);
}

bool_t
xdr_gprinc_arg(XDR *xdrs, gprinc_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_krb5_principal(xdrs, &objp->princ)) {
                return (FALSE);
        }
        if ((objp->api_version > KADM5_API_VERSION_1) &&
            !xdr_long(xdrs, &objp->mask)) {
             return FALSE;
        }

        return (TRUE);
}

bool_t
xdr_gprinc_ret(XDR *xdrs, gprinc_ret *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_kadm5_ret_t(xdrs, &objp->code)) {
                return (FALSE);
        }
        if(objp->code == KADM5_OK)  {
             if (objp->api_version == KADM5_API_VERSION_1) {
                  if (!xdr_kadm5_principal_ent_rec_v1(xdrs, &objp->rec)) {
                       return (FALSE);
                  }
             } else {
                  if (!xdr_kadm5_principal_ent_rec(xdrs, &objp->rec)) {
                       return (FALSE);
                  }
             }
        }

        return (TRUE);
}

bool_t
xdr_cpol_arg(XDR *xdrs, cpol_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_kadm5_policy_ent_rec(xdrs, &objp->rec)) {
                return (FALSE);
        }
        if (!xdr_long(xdrs, &objp->mask)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_dpol_arg(XDR *xdrs, dpol_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_nullstring(xdrs, &objp->name)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_mpol_arg(XDR *xdrs, mpol_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_kadm5_policy_ent_rec(xdrs, &objp->rec)) {
                return (FALSE);
        }
        if (!xdr_long(xdrs, &objp->mask)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_gpol_arg(XDR *xdrs, gpol_arg *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_nullstring(xdrs, &objp->name)) {
                return (FALSE);
        }
        return (TRUE);
}

bool_t
xdr_gpol_ret(XDR *xdrs, gpol_ret *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
        if (!xdr_kadm5_ret_t(xdrs, &objp->code)) {
                return (FALSE);
        }
        if(objp->code == KADM5_OK) {
            if (!xdr_kadm5_policy_ent_rec(xdrs, &objp->rec))
                return (FALSE);
        }

        return (TRUE);
}

bool_t
xdr_gpols_arg(XDR *xdrs, gpols_arg *objp)
{
     if (!xdr_ui_4(xdrs, &objp->api_version)) {
          return (FALSE);
     }
     if (!xdr_nullstring(xdrs, &objp->exp)) {
          return (FALSE);
     }
     return (TRUE);
}

bool_t
xdr_gpols_ret(XDR *xdrs, gpols_ret *objp)
{
     if (!xdr_ui_4(xdrs, &objp->api_version)) {
          return (FALSE);
     }
     if (!xdr_kadm5_ret_t(xdrs, &objp->code)) {
          return (FALSE);
     }
     if (objp->code == KADM5_OK) {
          if (!xdr_int(xdrs, &objp->count)) {
               return (FALSE);
          }
          if (!xdr_array(xdrs, (caddr_t *) &objp->pols,
                         (unsigned int *) &objp->count, ~0,
                         sizeof(char *), xdr_nullstring)) {
               return (FALSE);
          }
     }

     return (TRUE);
}

bool_t xdr_getprivs_ret(XDR *xdrs, getprivs_ret *objp)
{
        if (!xdr_ui_4(xdrs, &objp->api_version)) {
                return (FALSE);
        }
     if (! xdr_kadm5_ret_t(xdrs, &objp->code) ||
         ! xdr_long(xdrs, &objp->privs))
          return FALSE;

     return TRUE;
}

bool_t
xdr_krb5_principal(XDR *xdrs, krb5_principal *objp)
{
    int     ret;
    char            *p = NULL;
    krb5_principal  pr = NULL;
    static krb5_context context = NULL;

    /* using a static context here is ugly, but should work
       ok, and the other solutions are even uglier */

    if (!context &&
        kadm5_init_krb5_context(&context))
       return(FALSE);

    switch(xdrs->x_op) {
    case XDR_ENCODE:
        if (*objp) {
             if((ret = krb5_unparse_name(context, *objp, &p)) != 0)
                  return FALSE;
        }
        if(!xdr_nullstring(xdrs, &p))
            return FALSE;
        if (p) free(p);
        break;
    case XDR_DECODE:
        if(!xdr_nullstring(xdrs, &p))
            return FALSE;
        if (p) {
             ret = krb5_parse_name(context, p, &pr);
             if(ret != 0)
                  return FALSE;
             *objp = pr;
             free(p);
        } else
             *objp = NULL;
        break;
    case XDR_FREE:
        if(*objp != NULL)
            krb5_free_principal(context, *objp);
        break;
    }
    return TRUE;
}

bool_t
xdr_krb5_octet(XDR *xdrs, krb5_octet *objp)
{
   if (!xdr_u_char(xdrs, objp))
        return (FALSE);
   return (TRUE);
}

bool_t
xdr_krb5_enctype(XDR *xdrs, krb5_enctype *objp)
{
   /*
    * This used to be xdr_krb5_keytype, but keytypes and enctypes have
    * been merged into only enctypes.  However, randkey_principal
    * already ensures that only a key of ENCTYPE_DES_CBC_CRC will be
    * returned to v1 clients, and ENCTYPE_DES_CBC_CRC has the same
    * value as KEYTYPE_DES used too, which is what all v1 clients
    * expect.  Therefore, IMHO, just encoding whatever enctype we get
    * is safe.
    */

   if (!xdr_u_int(xdrs, (unsigned int *) objp))
        return (FALSE);
   return (TRUE);
}

bool_t
xdr_krb5_salttype(XDR *xdrs, krb5_int32 *objp)
{
    if (!xdr_int(xdrs, (int32_t *) objp))
        return FALSE;
    return TRUE;
}

bool_t
xdr_krb5_keyblock(XDR *xdrs, krb5_keyblock *objp)
{
   /* XXX This only works because free_keyblock assumes ->contents
      is allocated by malloc() */

   if(!xdr_krb5_enctype(xdrs, &objp->enctype))
      return FALSE;
   if(!xdr_bytes(xdrs, (char **) &objp->contents, (unsigned int *)
                 &objp->length, ~0))
      return FALSE;
   return TRUE;
}