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- markus@cvs.openbsd.org 2001/12/05 16:54:51 

[compat.c match.c match.h]
     make theo and djm happy: bye bye regexp
This commit is contained in:
Ben Lindstrom 2001-12-06 18:06:05 +00:00
parent ff4a14f809
commit 9eab262f1c
4 changed files with 85 additions and 65 deletions
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5
ChangeLog
View File

@ -65,6 +65,9 @@
- markus@cvs.openbsd.org 2001/12/05 15:04:48 - markus@cvs.openbsd.org 2001/12/05 15:04:48
[version.h] [version.h]
post 3.0.2 post 3.0.2
- markus@cvs.openbsd.org 2001/12/05 16:54:51
[compat.c match.c match.h]
make theo and djm happy: bye bye regexp
20011126 20011126
- (tim) [contrib/cygwin/README, openbsd-compat/bsd-cygwin_util.c, - (tim) [contrib/cygwin/README, openbsd-compat/bsd-cygwin_util.c,
@ -6987,4 +6990,4 @@
- Wrote replacements for strlcpy and mkdtemp - Wrote replacements for strlcpy and mkdtemp
- Released 1.0pre1 - Released 1.0pre1
$Id: ChangeLog,v 1.1685 2001/12/06 18:02:59 mouring Exp $ $Id: ChangeLog,v 1.1686 2001/12/06 18:06:05 mouring Exp $

112
compat.c
View File

@ -23,22 +23,13 @@
*/ */
#include "includes.h" #include "includes.h"
RCSID("$OpenBSD: compat.c,v 1.54 2001/12/05 10:06:12 deraadt Exp $"); RCSID("$OpenBSD: compat.c,v 1.55 2001/12/05 16:54:51 markus Exp $");
#ifdef HAVE_LIBPCRE
# include <pcreposix.h>
#else /* Use native regex libraries */
# ifdef HAVE_REGEX_H
# include <regex.h>
# else
# include "openbsd-compat/fake-regex.h"
# endif
#endif /* HAVE_LIBPCRE */
#include "packet.h" #include "packet.h"
#include "xmalloc.h" #include "xmalloc.h"
#include "compat.h" #include "compat.h"
#include "log.h" #include "log.h"
#include "match.h"
int compat13 = 0; int compat13 = 0;
int compat20 = 0; int compat20 = 0;
@ -60,86 +51,97 @@ enable_compat13(void)
void void
compat_datafellows(const char *version) compat_datafellows(const char *version)
{ {
int i, ret; int i;
char ebuf[1024];
regex_t reg;
static struct { static struct {
char *pat; char *pat;
int bugs; int bugs;
} check[] = { } check[] = {
{ "^OpenSSH[-_]2\\.[012]", { "OpenSSH-2.0*,"
SSH_OLD_SESSIONID|SSH_BUG_BANNER| "OpenSSH-2.1*,"
"OpenSSH_2.1*,"
"OpenSSH_2.2*", SSH_OLD_SESSIONID|SSH_BUG_BANNER|
SSH_OLD_DHGEX|SSH_BUG_NOREKEY }, SSH_OLD_DHGEX|SSH_BUG_NOREKEY },
{ "^OpenSSH_2\\.3\\.0", SSH_BUG_BANNER|SSH_BUG_BIGENDIANAES| { "OpenSSH_2.3.0*", SSH_BUG_BANNER|SSH_BUG_BIGENDIANAES|
SSH_OLD_DHGEX|SSH_BUG_NOREKEY}, SSH_OLD_DHGEX|SSH_BUG_NOREKEY},
{ "^OpenSSH_2\\.3\\.", SSH_BUG_BIGENDIANAES|SSH_OLD_DHGEX| { "OpenSSH_2.3.*", SSH_BUG_BIGENDIANAES|SSH_OLD_DHGEX|
SSH_BUG_NOREKEY}, SSH_BUG_NOREKEY},
{ "^OpenSSH_2\\.5\\.[01]p1", { "OpenSSH_2.5.0p1*,"
"OpenSSH_2.5.1p1*",
SSH_BUG_BIGENDIANAES|SSH_OLD_DHGEX| SSH_BUG_BIGENDIANAES|SSH_OLD_DHGEX|
SSH_BUG_NOREKEY }, SSH_BUG_NOREKEY },
{ "^OpenSSH_2\\.5\\.[012]", { "OpenSSH_2.5.0*,"
SSH_OLD_DHGEX|SSH_BUG_NOREKEY }, "OpenSSH_2.5.1*,"
{ "^OpenSSH_2\\.5\\.3", "OpenSSH_2.5.2*", SSH_OLD_DHGEX|SSH_BUG_NOREKEY },
{ "OpenSSH_2.5.3*",
SSH_BUG_NOREKEY }, SSH_BUG_NOREKEY },
{ "^OpenSSH", 0 }, { "OpenSSH*", 0 },
{ "MindTerm", 0 }, { "*MindTerm*", 0 },
{ "^2\\.1\\.0", SSH_BUG_SIGBLOB|SSH_BUG_HMAC| { "2.1.0*", SSH_BUG_SIGBLOB|SSH_BUG_HMAC|
SSH_OLD_SESSIONID|SSH_BUG_DEBUG| SSH_OLD_SESSIONID|SSH_BUG_DEBUG|
SSH_BUG_RSASIGMD5|SSH_BUG_HBSERVICE }, SSH_BUG_RSASIGMD5|SSH_BUG_HBSERVICE },
{ "^2\\.1 ", SSH_BUG_SIGBLOB|SSH_BUG_HMAC| { "2.1 *", SSH_BUG_SIGBLOB|SSH_BUG_HMAC|
SSH_OLD_SESSIONID|SSH_BUG_DEBUG| SSH_OLD_SESSIONID|SSH_BUG_DEBUG|
SSH_BUG_RSASIGMD5|SSH_BUG_HBSERVICE }, SSH_BUG_RSASIGMD5|SSH_BUG_HBSERVICE },
{ "^2\\.0\\.1[3-9]", SSH_BUG_SIGBLOB|SSH_BUG_HMAC| { "2.0.13*,"
"2.0.14*,"
"2.0.15*,"
"2.0.16*,"
"2.0.17*,"
"2.0.18*,"
"2.0.19*", SSH_BUG_SIGBLOB|SSH_BUG_HMAC|
SSH_OLD_SESSIONID|SSH_BUG_DEBUG| SSH_OLD_SESSIONID|SSH_BUG_DEBUG|
SSH_BUG_PKSERVICE|SSH_BUG_X11FWD| SSH_BUG_PKSERVICE|SSH_BUG_X11FWD|
SSH_BUG_PKOK|SSH_BUG_RSASIGMD5| SSH_BUG_PKOK|SSH_BUG_RSASIGMD5|
SSH_BUG_HBSERVICE|SSH_BUG_OPENFAILURE| SSH_BUG_HBSERVICE|SSH_BUG_OPENFAILURE|
SSH_BUG_DUMMYCHAN }, SSH_BUG_DUMMYCHAN },
{ "^2\\.0\\.1[1-2]", SSH_BUG_SIGBLOB|SSH_BUG_HMAC| { "2.0.11*,"
"2.0.12*", SSH_BUG_SIGBLOB|SSH_BUG_HMAC|
SSH_OLD_SESSIONID|SSH_BUG_DEBUG| SSH_OLD_SESSIONID|SSH_BUG_DEBUG|
SSH_BUG_PKSERVICE|SSH_BUG_X11FWD| SSH_BUG_PKSERVICE|SSH_BUG_X11FWD|
SSH_BUG_PKAUTH|SSH_BUG_PKOK| SSH_BUG_PKAUTH|SSH_BUG_PKOK|
SSH_BUG_RSASIGMD5|SSH_BUG_OPENFAILURE| SSH_BUG_RSASIGMD5|SSH_BUG_OPENFAILURE|
SSH_BUG_DUMMYCHAN }, SSH_BUG_DUMMYCHAN },
{ "^2\\.0\\.", SSH_BUG_SIGBLOB|SSH_BUG_HMAC| { "2.0.*", SSH_BUG_SIGBLOB|SSH_BUG_HMAC|
SSH_OLD_SESSIONID|SSH_BUG_DEBUG| SSH_OLD_SESSIONID|SSH_BUG_DEBUG|
SSH_BUG_PKSERVICE|SSH_BUG_X11FWD| SSH_BUG_PKSERVICE|SSH_BUG_X11FWD|
SSH_BUG_PKAUTH|SSH_BUG_PKOK| SSH_BUG_PKAUTH|SSH_BUG_PKOK|
SSH_BUG_RSASIGMD5|SSH_BUG_OPENFAILURE| SSH_BUG_RSASIGMD5|SSH_BUG_OPENFAILURE|
SSH_BUG_DERIVEKEY|SSH_BUG_DUMMYCHAN }, SSH_BUG_DERIVEKEY|SSH_BUG_DUMMYCHAN },
{ "^2\\.[23]\\.0", SSH_BUG_HMAC|SSH_BUG_DEBUG| { "2.2.0*,"
"2.3.0*", SSH_BUG_HMAC|SSH_BUG_DEBUG|
SSH_BUG_RSASIGMD5 }, SSH_BUG_RSASIGMD5 },
{ "^2\\.3\\.", SSH_BUG_DEBUG|SSH_BUG_RSASIGMD5 }, { "2.3.*", SSH_BUG_DEBUG|SSH_BUG_RSASIGMD5 },
{ "^2\\.[2-9]\\.", SSH_BUG_DEBUG }, { "2.4", SSH_OLD_SESSIONID }, /* Van Dyke */
{ "^3\\.0\\.", SSH_BUG_DEBUG }, { "2.*", SSH_BUG_DEBUG },
{ "^2\\.4$", SSH_OLD_SESSIONID }, /* Van Dyke */ { "3.0.*", SSH_BUG_DEBUG },
{ "^3\\.0 SecureCRT", SSH_OLD_SESSIONID }, { "3.0 SecureCRT*", SSH_OLD_SESSIONID },
{ "^1\\.7 SecureFX", SSH_OLD_SESSIONID }, { "1.7 SecureFX*", SSH_OLD_SESSIONID },
{ "^1\\.2\\.1[89]", SSH_BUG_IGNOREMSG }, { "1.2.18*,"
{ "^1\\.2\\.2[012]", SSH_BUG_IGNOREMSG }, "1.2.19*,"
{ "^1\\.3\\.2", SSH_BUG_IGNOREMSG }, /* f-secure */ "1.2.20*,"
{ "^SSH Compatible Server", /* Netscreen */ "1.2.21*,"
"1.2.22*", SSH_BUG_IGNOREMSG },
{ "1.3.2*", SSH_BUG_IGNOREMSG }, /* f-secure */
{ "*SSH Compatible Server*", /* Netscreen */
SSH_BUG_PASSWORDPAD }, SSH_BUG_PASSWORDPAD },
{ "^OSU_0", SSH_BUG_PASSWORDPAD }, { "*OSU_0*,"
{ "^OSU_1\\.[0-4]", SSH_BUG_PASSWORDPAD }, "OSU_1.0*,"
{ "^OSU_1\\.5alpha[1-3]", "OSU_1.1*,"
SSH_BUG_PASSWORDPAD }, "OSU_1.2*,"
{ "^SSH_Version_Mapper", "OSU_1.3*,"
"OSU_1.4*,"
"OSU_1.5alpha1*,"
"OSU_1.5alpha2*,"
"OSU_1.5alpha3*", SSH_BUG_PASSWORDPAD },
{ "*SSH_Version_Mapper*",
SSH_BUG_SCANNER }, SSH_BUG_SCANNER },
{ NULL, 0 } { NULL, 0 }
}; };
/* process table, return first match */ /* process table, return first match */
for (i = 0; check[i].pat; i++) { for (i = 0; check[i].pat; i++) {
ret = regcomp(&reg, check[i].pat, REG_EXTENDED|REG_NOSUB); if (match_pattern_list(version, check[i].pat,
if (ret != 0) { strlen(check[i].pat), 0) == 1) {
regerror(ret, &reg, ebuf, sizeof(ebuf));
ebuf[sizeof(ebuf)-1] = '\0';
error("regerror: %s", ebuf);
continue;
}
ret = regexec(&reg, version, 0, NULL, 0);
regfree(&reg);
if (ret == 0) {
debug("match: %s pat %s", version, check[i].pat); debug("match: %s pat %s", version, check[i].pat);
datafellows = check[i].bugs; datafellows = check[i].bugs;
return; return;

26
match.c
View File

@ -35,7 +35,7 @@
*/ */
#include "includes.h" #include "includes.h"
RCSID("$OpenBSD: match.c,v 1.14 2001/06/27 04:48:53 markus Exp $"); RCSID("$OpenBSD: match.c,v 1.15 2001/12/05 16:54:51 markus Exp $");
#include "match.h" #include "match.h"
#include "xmalloc.h" #include "xmalloc.h"
@ -104,14 +104,15 @@ match_pattern(const char *s, const char *pattern)
} }
/* /*
* Tries to match the host name (which must be in all lowercase) against the * Tries to match the string against the
* comma-separated sequence of subpatterns (each possibly preceded by ! to * comma-separated sequence of subpatterns (each possibly preceded by ! to
* indicate negation). Returns -1 if negation matches, 1 if there is * indicate negation). Returns -1 if negation matches, 1 if there is
* a positive match, 0 if there is no match at all. * a positive match, 0 if there is no match at all.
*/ */
int int
match_hostname(const char *host, const char *pattern, u_int len) match_pattern_list(const char *string, const char *pattern, u_int len,
int dolower)
{ {
char sub[1024]; char sub[1024];
int negated; int negated;
@ -134,7 +135,8 @@ match_hostname(const char *host, const char *pattern, u_int len)
for (subi = 0; for (subi = 0;
i < len && subi < sizeof(sub) - 1 && pattern[i] != ','; i < len && subi < sizeof(sub) - 1 && pattern[i] != ',';
subi++, i++) subi++, i++)
sub[subi] = isupper(pattern[i]) ? tolower(pattern[i]) : pattern[i]; sub[subi] = dolower && isupper(pattern[i]) ?
tolower(pattern[i]) : pattern[i];
/* If subpattern too long, return failure (no match). */ /* If subpattern too long, return failure (no match). */
if (subi >= sizeof(sub) - 1) if (subi >= sizeof(sub) - 1)
return 0; return 0;
@ -146,8 +148,8 @@ match_hostname(const char *host, const char *pattern, u_int len)
/* Null-terminate the subpattern. */ /* Null-terminate the subpattern. */
sub[subi] = '\0'; sub[subi] = '\0';
/* Try to match the subpattern against the host name. */ /* Try to match the subpattern against the string. */
if (match_pattern(host, sub)) { if (match_pattern(string, sub)) {
if (negated) if (negated)
return -1; /* Negative */ return -1; /* Negative */
else else
@ -162,6 +164,18 @@ match_hostname(const char *host, const char *pattern, u_int len)
return got_positive; return got_positive;
} }
/*
* Tries to match the host name (which must be in all lowercase) against the
* comma-separated sequence of subpatterns (each possibly preceded by ! to
* indicate negation). Returns -1 if negation matches, 1 if there is
* a positive match, 0 if there is no match at all.
*/
int
match_hostname(const char *host, const char *pattern, u_int len)
{
return match_pattern_list(host, pattern, len, 1);
}
/* /*
* returns 0 if we get a negative match for the hostname or the ip * returns 0 if we get a negative match for the hostname or the ip
* or if we get no match at all. returns 1 otherwise. * or if we get no match at all. returns 1 otherwise.

7
match.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: match.h,v 1.9 2001/06/26 06:32:56 itojun Exp $ */ /* $OpenBSD: match.h,v 1.10 2001/12/05 16:54:51 markus Exp $ */
/* /*
* Author: Tatu Ylonen <ylo@cs.hut.fi> * Author: Tatu Ylonen <ylo@cs.hut.fi>
@ -14,8 +14,9 @@
#ifndef MATCH_H #ifndef MATCH_H
#define MATCH_H #define MATCH_H
int match_pattern(const char *, const char *); int match_pattern(const char *, const char *);
int match_hostname(const char *, const char *, u_int); int match_pattern_list(const char *, const char *, u_int, int);
int match_hostname(const char *, const char *, u_int);
int match_host_and_ip(const char *, const char *, const char *); int match_host_and_ip(const char *, const char *, const char *);
int match_user(const char *, const char *, const char *, const char *); int match_user(const char *, const char *, const char *, const char *);
char *match_list(const char *, const char *, u_int *); char *match_list(const char *, const char *, u_int *);