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Added dnssec support.

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This commit is contained in:
Jan F. Chadima 2009-07-30 08:29:01 +00:00
parent 42c539189a
commit 986cee7298
2 changed files with 78 additions and 1 deletions
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72
openssh-5.2p1-edns.patch Normal file
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@ -0,0 +1,72 @@
diff -up openssh-5.2p1/dns.c.rh205842 openssh-5.2p1/dns.c
--- openssh-5.2p1/dns.c.rh205842 2009-07-27 16:25:28.000000000 +0200
+++ openssh-5.2p1/dns.c 2009-07-27 16:40:59.000000000 +0200
@@ -176,6 +176,7 @@ verify_host_key_dns(const char *hostname
{
u_int counter;
int result;
+ unsigned int rrset_flags = 0;
struct rrsetinfo *fingerprints = NULL;
u_int8_t hostkey_algorithm;
@@ -199,8 +200,19 @@ verify_host_key_dns(const char *hostname
return -1;
}
+ /*
+ * Original getrrsetbyname function, found on OpenBSD for example,
+ * doesn't accept any flag and prerequisite for obtaining AD bit in
+ * DNS response is set by "options edns0" in resolv.conf.
+ *
+ * Our version is more clever and use RRSET_FORCE_EDNS0 flag.
+ */
+#ifndef HAVE_GETRRSETBYNAME
+ rrset_flags |= RRSET_FORCE_EDNS0;
+#endif
result = getrrsetbyname(hostname, DNS_RDATACLASS_IN,
- DNS_RDATATYPE_SSHFP, 0, &fingerprints);
+ DNS_RDATATYPE_SSHFP, rrset_flags, &fingerprints);
+
if (result) {
verbose("DNS lookup error: %s", dns_result_totext(result));
return -1;
diff -up openssh-5.2p1/openbsd-compat/getrrsetbyname.c.rh205842 openssh-5.2p1/openbsd-compat/getrrsetbyname.c
--- openssh-5.2p1/openbsd-compat/getrrsetbyname.c.rh205842 2009-07-27 16:22:23.000000000 +0200
+++ openssh-5.2p1/openbsd-compat/getrrsetbyname.c 2009-07-27 16:41:55.000000000 +0200
@@ -209,8 +209,8 @@ getrrsetbyname(const char *hostname, uns
goto fail;
}
- /* don't allow flags yet, unimplemented */
- if (flags) {
+ /* Allow RRSET_FORCE_EDNS0 flag only. */
+ if ((flags & !RRSET_FORCE_EDNS0) != 0) {
result = ERRSET_INVAL;
goto fail;
}
@@ -226,9 +226,9 @@ getrrsetbyname(const char *hostname, uns
#endif /* DEBUG */
#ifdef RES_USE_DNSSEC
- /* turn on DNSSEC if EDNS0 is configured */
- if (_resp->options & RES_USE_EDNS0)
- _resp->options |= RES_USE_DNSSEC;
+ /* turn on DNSSEC if required */
+ if (flags & RRSET_FORCE_EDNS0)
+ _resp->options |= (RES_USE_EDNS0|RES_USE_DNSSEC);
#endif /* RES_USE_DNSEC */
/* make query */
diff -up openssh-5.2p1/openbsd-compat/getrrsetbyname.h.rh205842 openssh-5.2p1/openbsd-compat/getrrsetbyname.h
--- openssh-5.2p1/openbsd-compat/getrrsetbyname.h.rh205842 2009-07-27 16:35:02.000000000 +0200
+++ openssh-5.2p1/openbsd-compat/getrrsetbyname.h 2009-07-27 16:36:09.000000000 +0200
@@ -72,6 +72,9 @@
#ifndef RRSET_VALIDATED
# define RRSET_VALIDATED 1
#endif
+#ifndef RRSET_FORCE_EDNS0
+# define RRSET_FORCE_EDNS0 0x0001
+#endif
/*
* Return codes for getrrsetbyname()

7
openssh.spec
View File

@ -63,7 +63,7 @@
Summary: An open source implementation of SSH protocol versions 1 and 2
Name: openssh
Version: 5.2p1
Release: 16%{?dist}%{?rescue_rel}
Release: 17%{?dist}%{?rescue_rel}
URL: http://www.openssh.com/portable.html
#Source0: ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-%{version}.tar.gz
#Source1: ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-%{version}.tar.gz.asc
@ -102,6 +102,7 @@ Patch67: openssh-5.2p1-xmodifiers.patch
Patch68: openssh-5.2p1-pathmax.patch
Patch69: openssh-5.2p1-selabel.patch
Patch70: openssh-5.2p1-sesftp.patch
Patch71: openssh-5.2p1-edns.patch
License: BSD
Group: Applications/Internet
@ -238,6 +239,7 @@ an X11 passphrase dialog for OpenSSH.
%patch68 -p1 -b .pathmax
%patch69 -p1 -b .selabel
%patch70 -p1 -b .sesftp
%patch71 -p1 -b .edns
autoreconf
@ -472,6 +474,9 @@ fi
%endif
%changelog
* Thu Jul 30 2009 Jan F. Chadima <jchadima@redhat.com> - 5.2p1-17
- Added dnssec support.
* Sat Jul 25 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 5.2p1-16
- Rebuilt for https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild