diff options
Diffstat (limited to 'debian/patches/dnssec-sshfp.patch')
| -rw-r--r-- | debian/patches/dnssec-sshfp.patch | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/debian/patches/dnssec-sshfp.patch b/debian/patches/dnssec-sshfp.patch new file mode 100644 index 0000000..90bf812 --- /dev/null +++ b/debian/patches/dnssec-sshfp.patch @@ -0,0 +1,94 @@ +From bdf9d563e4ecfcf17de88d67df844af469c3d77e Mon Sep 17 00:00:00 2001 +From: Colin Watson <cjwatson@debian.org> +Date: Sun, 9 Feb 2014 16:10:01 +0000 +Subject: Force use of DNSSEC even if "options edns0" isn't in resolv.conf + +This allows SSHFP DNS records to be verified if glibc 2.11 is installed. + +Origin: vendor, https://cvs.fedoraproject.org/viewvc/F-12/openssh/openssh-5.2p1-edns.patch?revision=1.1&view=markup +Bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=572049 +Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=572049 +Last-Update: 2023-06-19 + +Patch-Name: dnssec-sshfp.patch +--- + dns.c | 14 +++++++++++++- + openbsd-compat/getrrsetbyname.c | 10 +++++----- + openbsd-compat/getrrsetbyname.h | 3 +++ + 3 files changed, 21 insertions(+), 6 deletions(-) + +diff --git a/dns.c b/dns.c +index 939241440..bf47a079f 100644 +--- a/dns.c ++++ b/dns.c +@@ -198,6 +198,7 @@ verify_host_key_dns(const char *hostname, struct sockaddr *address, + { + u_int counter; + int result; ++ unsigned int rrset_flags = 0; + struct rrsetinfo *fingerprints = NULL; + + u_int8_t hostkey_algorithm; +@@ -220,8 +221,19 @@ verify_host_key_dns(const char *hostname, struct sockaddr *address, + 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 --git a/openbsd-compat/getrrsetbyname.c b/openbsd-compat/getrrsetbyname.c +index 8f5939840..6091a2591 100644 +--- a/openbsd-compat/getrrsetbyname.c ++++ b/openbsd-compat/getrrsetbyname.c +@@ -214,8 +214,8 @@ getrrsetbyname(const char *hostname, unsigned int rdclass, + 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; + } +@@ -231,9 +231,9 @@ getrrsetbyname(const char *hostname, unsigned int rdclass, + #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 --git a/openbsd-compat/getrrsetbyname.h b/openbsd-compat/getrrsetbyname.h +index 1283f5506..dbbc85a2a 100644 +--- a/openbsd-compat/getrrsetbyname.h ++++ b/openbsd-compat/getrrsetbyname.h +@@ -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() |