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Prior to this, setting VersionAddendum will be a no-op: one will always have BASE_VERSION + " " + VERSION_HPN for VersionAddendum set in the config and a bare BASE_VERSION + VERSION_HPN when there is no VersionAddendum is set. HPN patch requires both parties to have the "hpn" inside their advertized versions, so we add VERSION_HPN to the VERSION_BASE if HPN is enabled and omitting it if HPN is disabled. VersionAddendum now uses the following logics: * unset (default value): append " " and VERSION_ADDENDUM; * VersionAddendum is set and isn't empty: append " " and VersionAddendum; * VersionAddendum is set and empty: don't append anything. Approved by: des Reviewed by: bz MFC after: 3 days
96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*-
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* Copyright (c) 2001 Brian Fundakowski Feldman
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* Copyright (c) 2012 Eygene Ryabinkin <rea@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include "includes.h"
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__RCSID("$FreeBSD$");
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#include <string.h>
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#include "version.h"
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#include "xmalloc.h"
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static char *version = NULL;
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/* NULL means "use default value", empty string means "unset" */
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static const char *addendum = NULL;
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static unsigned char update_version = 1;
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/*
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* Constructs the version string if it is empty or needs updating.
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*
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* HPN patch we're running requires both parties
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* to have the "hpn" string inside the advertized version
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* (see compat.c::compat_datafellows), so we should
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* include it to the generated string if HPN is enabled.
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*/
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const char *
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ssh_version_get(int hpn_disabled)
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{
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const char *hpn = NULL, *add = NULL;
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char *newvers = NULL;
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size_t size = 0;
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if (version != NULL && !update_version)
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return (version);
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hpn = (hpn_disabled ? NULL : SSH_VERSION_HPN);
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add = (addendum == NULL ? SSH_VERSION_ADDENDUM :
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(addendum[0] == '\0' ? NULL : addendum));
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size = strlen(SSH_VERSION_BASE) + (hpn ? strlen(hpn) : 0) +
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(add ? strlen(add) + 1 : 0) + 1;
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newvers = xmalloc(size);
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strcpy(newvers, SSH_VERSION_BASE);
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if (hpn)
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strcat(newvers, hpn);
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if (add) {
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strcat(newvers, " ");
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strcat(newvers, add);
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}
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if (version)
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xfree(version);
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version = newvers;
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update_version = 0;
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return (version);
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}
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void
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ssh_version_set_addendum(const char *add)
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{
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if (add && addendum && !strcmp(add, addendum))
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return;
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if (addendum)
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xfree((void *)addendum);
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addendum = (add ? xstrdup(add) : xstrdup(""));
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update_version = 1;
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}
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