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git://anongit.mindrot.org/openssh.git
synced 2024-11-23 01:03:48 +08:00
upstream: fix regression introduced when I switched the "Match"
criteria tokeniser to a more shell-like one. Apparently the old tokeniser (accidentally?) allowed "Match criteria=argument" as well as the "Match criteria argument" syntax that we tested for. People were using this syntax so this adds back support for "Match criteria=argument" bz3739 ok dtucker OpenBSD-Commit-ID: d1eebedb8c902002b75b75debfe1eeea1801f58a
This commit is contained in:
djm@openbsd.org
Damien Miller
parent
9517cc5857
commit
3f02368e8e
23
misc.c
23
misc.c
@ -1,4 +1,4 @@
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/* $OpenBSD: misc.c,v 1.196 2024/06/06 17:15:25 djm Exp $ */
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/* $OpenBSD: misc.c,v 1.197 2024/09/25 01:24:04 djm Exp $ */
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/*
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* Copyright (c) 2000 Markus Friedl. All rights reserved.
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* Copyright (c) 2005-2020 Damien Miller. All rights reserved.
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@ -107,6 +107,27 @@ rtrim(char *s)
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}
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}
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/*
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* returns pointer to character after 'prefix' in 's' or otherwise NULL
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* if the prefix is not present.
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*/
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const char *
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strprefix(const char *s, const char *prefix, int ignorecase)
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{
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size_t prefixlen;
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if ((prefixlen = strlen(prefix)) == 0)
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return s;
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if (ignorecase) {
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if (strncasecmp(s, prefix, prefixlen) != 0)
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return NULL;
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} else {
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if (strncmp(s, prefix, prefixlen) != 0)
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return NULL;
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}
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return s + prefixlen;
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}
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/* set/unset filedescriptor to non-blocking */
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int
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set_nonblock(int fd)
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3
misc.h
3
misc.h
@ -1,4 +1,4 @@
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/* $OpenBSD: misc.h,v 1.109 2024/06/06 17:15:25 djm Exp $ */
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/* $OpenBSD: misc.h,v 1.110 2024/09/25 01:24:04 djm Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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@ -56,6 +56,7 @@ struct ForwardOptions {
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char *chop(char *);
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void rtrim(char *);
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void skip_space(char **);
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const char *strprefix(const char *, const char *, int);
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char *strdelim(char **);
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char *strdelimw(char **);
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int set_nonblock(int);
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28
readconf.c
28
readconf.c
@ -1,4 +1,4 @@
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/* $OpenBSD: readconf.c,v 1.390 2024/09/15 00:57:36 djm Exp $ */
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/* $OpenBSD: readconf.c,v 1.391 2024/09/25 01:24:04 djm Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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@ -710,7 +710,7 @@ match_cfg_line(Options *options, const char *full_line, int *acp, char ***avp,
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struct passwd *pw, const char *host_arg, const char *original_host,
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int final_pass, int *want_final_pass, const char *filename, int linenum)
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{
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char *arg, *oattrib, *attrib, *cmd, *host, *criteria;
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char *arg, *oattrib, *attrib = NULL, *cmd, *host, *criteria;
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const char *ruser;
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int r, this_result, result = 1, attributes = 0, negate;
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@ -731,7 +731,8 @@ match_cfg_line(Options *options, const char *full_line, int *acp, char ***avp,
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debug2("checking match for '%s' host %s originally %s",
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full_line, host, original_host);
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while ((oattrib = attrib = argv_next(acp, avp)) != NULL) {
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while ((oattrib = argv_next(acp, avp)) != NULL) {
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attrib = xstrdup(oattrib);
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/* Terminate on comment */
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if (*attrib == '#') {
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argv_consume(acp);
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@ -777,9 +778,23 @@ match_cfg_line(Options *options, const char *full_line, int *acp, char ***avp,
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this_result ? "" : "not ", oattrib);
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continue;
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}
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/* Keep this list in sync with below */
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if (strprefix(attrib, "host=", 1) != NULL ||
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strprefix(attrib, "originalhost=", 1) != NULL ||
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strprefix(attrib, "user=", 1) != NULL ||
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strprefix(attrib, "localuser=", 1) != NULL ||
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strprefix(attrib, "localnetwork=", 1) != NULL ||
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strprefix(attrib, "tagged=", 1) != NULL ||
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strprefix(attrib, "exec=", 1) != NULL) {
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arg = strchr(attrib, '=');
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*(arg++) = '\0';
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} else {
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arg = argv_next(acp, avp);
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}
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/* All other criteria require an argument */
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if ((arg = argv_next(acp, avp)) == NULL ||
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*arg == '\0' || *arg == '#') {
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if (arg == NULL || *arg == '\0' || *arg == '#') {
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error("Missing Match criteria for %s", attrib);
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result = -1;
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goto out;
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@ -856,6 +871,8 @@ match_cfg_line(Options *options, const char *full_line, int *acp, char ***avp,
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criteria == NULL ? "" : criteria,
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criteria == NULL ? "" : "\"");
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free(criteria);
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free(attrib);
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attrib = NULL;
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}
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if (attributes == 0) {
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error("One or more attributes required for Match");
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@ -865,6 +882,7 @@ match_cfg_line(Options *options, const char *full_line, int *acp, char ***avp,
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out:
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if (result != -1)
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debug2("match %sfound", result ? "" : "not ");
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free(attrib);
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free(host);
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return result;
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}
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57
servconf.c
57
servconf.c
@ -1,4 +1,4 @@
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/* $OpenBSD: servconf.c,v 1.418 2024/09/15 03:09:44 djm Exp $ */
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/* $OpenBSD: servconf.c,v 1.419 2024/09/25 01:24:04 djm Exp $ */
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/*
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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@ -1033,7 +1033,7 @@ match_cfg_line(const char *full_line, int *acp, char ***avp,
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int line, struct connection_info *ci)
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{
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int result = 1, attributes = 0, port;
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char *arg, *attrib;
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char *arg, *attrib = NULL, *oattrib;
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if (ci == NULL)
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debug3("checking syntax for 'Match %s'", full_line);
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@ -1047,7 +1047,8 @@ match_cfg_line(const char *full_line, int *acp, char ***avp,
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ci->laddress ? ci->laddress : "(null)", ci->lport);
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}
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while ((attrib = argv_next(acp, avp)) != NULL) {
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while ((oattrib = argv_next(acp, avp)) != NULL) {
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attrib = xstrdup(oattrib);
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/* Terminate on comment */
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if (*attrib == '#') {
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argv_consume(acp); /* mark all arguments consumed */
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@ -1062,11 +1063,13 @@ match_cfg_line(const char *full_line, int *acp, char ***avp,
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*arg != '\0' && *arg != '#')) {
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error("'all' cannot be combined with other "
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"Match attributes");
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return -1;
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result = -1;
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goto out;
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}
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if (arg != NULL && *arg == '#')
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argv_consume(acp); /* consume remaining args */
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return 1;
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result = 1;
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goto out;
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}
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/* Criterion "invalid-user" also has no argument */
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if (strcasecmp(attrib, "invalid-user") == 0) {
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@ -1078,11 +1081,26 @@ match_cfg_line(const char *full_line, int *acp, char ***avp,
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debug("matched invalid-user at line %d", line);
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continue;
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}
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/* Keep this list in sync with below */
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if (strprefix(attrib, "user=", 1) != NULL ||
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strprefix(attrib, "group=", 1) != NULL ||
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strprefix(attrib, "host=", 1) != NULL ||
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strprefix(attrib, "address=", 1) != NULL ||
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strprefix(attrib, "localaddress=", 1) != NULL ||
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strprefix(attrib, "localport=", 1) != NULL ||
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strprefix(attrib, "rdomain=", 1) != NULL) {
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arg = strchr(attrib, '=');
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*(arg++) = '\0';
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} else {
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arg = argv_next(acp, avp);
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}
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/* All other criteria require an argument */
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if ((arg = argv_next(acp, avp)) == NULL ||
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*arg == '\0' || *arg == '#') {
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if (arg == NULL || *arg == '\0' || *arg == '#') {
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error("Missing Match criteria for %s", attrib);
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return -1;
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result = -1;
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goto out;
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}
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if (strcasecmp(attrib, "user") == 0) {
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if (ci == NULL || (ci->test && ci->user == NULL)) {
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@ -1105,7 +1123,8 @@ match_cfg_line(const char *full_line, int *acp, char ***avp,
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match_test_missing_fatal("Group", "user");
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switch (match_cfg_line_group(arg, line, ci->user)) {
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case -1:
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return -1;
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result = -1;
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goto out;
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case 0:
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result = 0;
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}
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@ -1141,7 +1160,8 @@ match_cfg_line(const char *full_line, int *acp, char ***avp,
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result = 0;
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break;
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case -2:
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return -1;
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result = -1;
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goto out;
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}
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} else if (strcasecmp(attrib, "localaddress") == 0){
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if (ci == NULL || (ci->test && ci->laddress == NULL)) {
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@ -1166,13 +1186,15 @@ match_cfg_line(const char *full_line, int *acp, char ***avp,
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result = 0;
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break;
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case -2:
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return -1;
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result = -1;
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goto out;
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}
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} else if (strcasecmp(attrib, "localport") == 0) {
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if ((port = a2port(arg)) == -1) {
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error("Invalid LocalPort '%s' on Match line",
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arg);
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return -1;
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result = -1;
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goto out;
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}
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if (ci == NULL || (ci->test && ci->lport == -1)) {
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result = 0;
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@ -1200,16 +1222,21 @@ match_cfg_line(const char *full_line, int *acp, char ***avp,
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debug("user %.100s matched 'RDomain %.100s' at "
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"line %d", ci->rdomain, arg, line);
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} else {
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error("Unsupported Match attribute %s", attrib);
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return -1;
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error("Unsupported Match attribute %s", oattrib);
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result = -1;
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goto out;
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}
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free(attrib);
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attrib = NULL;
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}
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if (attributes == 0) {
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error("One or more attributes required for Match");
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return -1;
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}
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if (ci != NULL)
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out:
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if (ci != NULL && result != -1)
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debug3("match %sfound", result ? "" : "not ");
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free(attrib);
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return result;
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}
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