32 lines
668 B
C
32 lines
668 B
C
/* $Id: xstrdup.c,v 1.1.1.1 2000/06/20 22:11:25 agmorgan Exp $ */
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/* $FreeBSD$ */
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#include <stdlib.h>
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#include <security/pam_misc.h>
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/*
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* Safe duplication of character strings. "Paranoid"; don't leave
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* evidence of old token around for later stack analysis.
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*/
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char *xstrdup(const char *x)
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{
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register char *new=NULL;
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if (x != NULL) {
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register int i;
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for (i=0; x[i]; ++i); /* length of string */
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if ((new = malloc(++i)) == NULL) {
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i = 0;
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} else {
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while (i-- > 0) {
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new[i] = x[i];
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}
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}
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x = NULL;
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}
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return new; /* return the duplicate or NULL on error */
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}
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