2 * Copyright (c) 2001 Brian Fundakowski Feldman
3 * Copyright (c) 2012 Eygene Ryabinkin <rea@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static char *version = NULL;
39 /* NULL means "use default value", empty string means "unset" */
40 static const char *addendum = NULL;
41 static unsigned char update_version = 1;
44 * Constructs the version string if it is empty or needs updating.
46 * HPN patch we're running requires both parties
47 * to have the "hpn" string inside the advertized version
48 * (see compat.c::compat_datafellows), so we should
49 * include it to the generated string if HPN is enabled.
52 ssh_version_get(int hpn_disabled)
54 const char *hpn = NULL, *add = NULL;
58 if (version != NULL && !update_version)
61 hpn = (hpn_disabled ? NULL : SSH_VERSION_HPN);
62 add = (addendum == NULL ? SSH_VERSION_ADDENDUM :
63 (addendum[0] == '\0' ? NULL : addendum));
65 size = strlen(SSH_VERSION_BASE) + (hpn ? strlen(hpn) : 0) +
66 (add ? strlen(add) + 1 : 0) + 1;
67 newvers = xmalloc(size);
68 strcpy(newvers, SSH_VERSION_BASE);
85 ssh_version_set_addendum(const char *add)
87 if (add && addendum && !strcmp(add, addendum))
91 xfree((void *)addendum);
92 addendum = (add ? xstrdup(add) : xstrdup(""));