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/*-
* Copyright (c) 2001 Brian Fundakowski Feldman
* Copyright (c) 2012 Eygene Ryabinkin <rea@FreeBSD.org>
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
*/
#include "includes.h"
__RCSID("$FreeBSD$");
#include <string.h>
#include "version.h"
#include "xmalloc.h"
static char *version = NULL;
/* NULL means "use default value", empty string means "unset" */
static const char *addendum = NULL;
static unsigned char update_version = 1;
/*
* Constructs the version string if it is empty or needs updating.
*
* HPN patch we're running requires both parties
* to have the "hpn" string inside the advertized version
* (see compat.c::compat_datafellows), so we should
* include it to the generated string if HPN is enabled.
*/
const char *
ssh_version_get(int hpn_disabled)
{
const char *hpn = NULL, *add = NULL;
char *newvers = NULL;
size_t size = 0;
if (version != NULL && !update_version)
return (version);
hpn = (hpn_disabled ? NULL : SSH_VERSION_HPN);
add = (addendum == NULL ? SSH_VERSION_ADDENDUM :
(addendum[0] == '\0' ? NULL : addendum));
size = strlen(SSH_VERSION_BASE) + (hpn ? strlen(hpn) : 0) +
(add ? strlen(add) + 1 : 0) + 1;
newvers = xmalloc(size);
strcpy(newvers, SSH_VERSION_BASE);
if (hpn)
strcat(newvers, hpn);
if (add) {
strcat(newvers, " ");
strcat(newvers, add);
}
if (version)
xfree(version);
version = newvers;
update_version = 0;
return (version);
}
void
ssh_version_set_addendum(const char *add)
{
if (add && addendum && !strcmp(add, addendum))
return;
if (addendum)
xfree((void *)addendum);
addendum = (add ? xstrdup(add) : xstrdup(""));
update_version = 1;
}
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