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/*
* lib/krb5/krb/copy_addrs.c
*
* Copyright 1990 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* krb5_copy_addresses()
*/
#include "k5-int.h"
krb5_error_code
krb5_copy_addr(context, inad, outad)
krb5_context context;
const krb5_address *inad;
krb5_address **outad;
{
krb5_address *tmpad;
if (!(tmpad = (krb5_address *)malloc(sizeof(*tmpad))))
return ENOMEM;
#ifdef HAVE_C_STRUCTURE_ASSIGNMENT
*tmpad = *inad;
#else
memcpy(tmpad, inad, sizeof(krb5_address));
#endif
if (!(tmpad->contents = (krb5_octet *)malloc(inad->length))) {
krb5_xfree(tmpad);
return ENOMEM;
}
memcpy((char *)tmpad->contents, (char *)inad->contents, inad->length);
*outad = tmpad;
return 0;
}
/*
* Copy an address array, with fresh allocation.
*/
krb5_error_code
krb5_copy_addresses(context, inaddr, outaddr)
krb5_context context;
krb5_address * const * inaddr;
krb5_address ***outaddr;
{
krb5_error_code retval;
krb5_address ** tempaddr;
register int nelems = 0;
if (!inaddr) {
*outaddr = 0;
return 0;
}
while (inaddr[nelems]) nelems++;
/* one more for a null terminated list */
if (!(tempaddr = (krb5_address **) calloc(nelems+1, sizeof(*tempaddr))))
return ENOMEM;
for (nelems = 0; inaddr[nelems]; nelems++) {
retval = krb5_copy_addr(context, inaddr[nelems], &tempaddr[nelems]);
if (retval) {
krb5_free_addresses(context, tempaddr);
return retval;
}
}
*outaddr = tempaddr;
return 0;
}
#if 0
/*
* Append an address array, to another address array, with fresh allocation.
* Note that this function may change the value of *outaddr even if it
* returns failure, but it will not change the contents of the list.
*/
krb5_error_code
krb5_append_addresses(context, inaddr, outaddr)
krb5_context context;
krb5_address * const * inaddr;
krb5_address ***outaddr;
{
krb5_error_code retval;
krb5_address ** tempaddr;
krb5_address ** tempaddr2;
register int nelems = 0;
register int norigelems = 0;
if (!inaddr)
return 0;
tempaddr2 = *outaddr;
while (inaddr[nelems]) nelems++;
while (tempaddr2[norigelems]) norigelems++;
tempaddr = (krb5_address **) realloc((char *)*outaddr,
(nelems + norigelems + 1) * sizeof(*tempaddr));
if (!tempaddr)
return ENOMEM;
/* The old storage has been freed. */
*outaddr = tempaddr;
for (nelems = 0; inaddr[nelems]; nelems++) {
retval = krb5_copy_addr(context, inaddr[nelems],
&tempaddr[norigelems + nelems]);
if (retval)
goto cleanup;
}
tempaddr[norigelems + nelems] = 0;
return 0;
cleanup:
while (--nelems >= 0)
krb5_free_address(context, tempaddr[norigelems + nelems]);
/* Try to allocate a smaller amount of memory for *outaddr. */
tempaddr = (krb5_address **) realloc((char *)tempaddr,
(norigelems + 1) * sizeof(*tempaddr));
if (tempaddr)
*outaddr = tempaddr;
return retval;
}
#endif
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