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/*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*RCSID("OpenBSD: misc.c,v 1.22 2003/09/18 08:49:45 markus Exp ");*/
/* For xmalloc, xfree etc:
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
* Versions of malloc and friends that check their results, and never return
* failure (they call fatal if they encounter an error).
*
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*/
/*RCSID("OpenBSD: xmalloc.c,v 1.16 2001/07/23 18:21:46 stevesk Exp ");*/
#include "includes.h"
#include "scpmisc.h"
void *
xmalloc(size_t size)
{
void *ptr;
if (size == 0) {
fprintf(stderr, "xmalloc: zero size\n");
exit(EXIT_FAILURE);
}
ptr = malloc(size);
if (ptr == NULL) {
fprintf(stderr, "xmalloc: out of memory (allocating %lu bytes)\n", (u_long) size);
exit(EXIT_FAILURE);
}
return ptr;
}
void *
xrealloc(void *ptr, size_t new_size)
{
void *new_ptr;
if (new_size == 0) {
fprintf(stderr, "xrealloc: zero size\n");
exit(EXIT_FAILURE);
}
if (ptr == NULL)
new_ptr = malloc(new_size);
else
new_ptr = realloc(ptr, new_size);
if (new_ptr == NULL) {
fprintf(stderr, "xrealloc: out of memory (new_size %lu bytes)\n", (u_long) new_size);
exit(EXIT_FAILURE);
}
return new_ptr;
}
void
xfree(void *ptr)
{
if (ptr == NULL) {
fprintf(stderr, "xfree: NULL pointer given as argument\n");
exit(EXIT_FAILURE);
}
free(ptr);
}
char *
xstrdup(const char *str)
{
size_t len;
char *cp;
len = strlen(str) + 1;
cp = xmalloc(len);
strncpy(cp, str, len);
return cp;
}
char *
cleanhostname(char *host)
{
if (*host == '[' && host[strlen(host) - 1] == ']') {
host[strlen(host) - 1] = '\0';
return (host + 1);
} else
return host;
}
char *
colon(char *cp)
{
int flag = 0;
if (*cp == ':') /* Leading colon is part of file name. */
return (0);
if (*cp == '[')
flag = 1;
for (; *cp; ++cp) {
if (*cp == '@' && *(cp+1) == '[')
flag = 1;
if (*cp == ']' && *(cp+1) == ':' && flag)
return (cp+1);
if (*cp == ':' && !flag)
return (cp);
if (*cp == '/')
return (0);
}
return (0);
}
/* function to assist building execv() arguments */
void
addargs(arglist *args, char *fmt, ...)
{
va_list ap;
char buf[1024];
int nalloc;
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
nalloc = args->nalloc;
if (args->list == NULL) {
nalloc = 32;
args->num = 0;
} else if (args->num+2 >= nalloc)
nalloc *= 2;
args->list = xrealloc(args->list, nalloc * sizeof(char *));
args->nalloc = nalloc;
args->list[args->num++] = xstrdup(buf);
args->list[args->num] = NULL;
}
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