diff options
| -rw-r--r-- | src/resolve/dns-type.c | 17 | ||||
| -rw-r--r-- | src/resolve/dns-type.h | 1 | ||||
| -rw-r--r-- | src/resolve/resolve-tool.c | 17 |
3 files changed, 35 insertions, 0 deletions
diff --git a/src/resolve/dns-type.c b/src/resolve/dns-type.c index b2f479cae5..78d9d5733f 100644 --- a/src/resolve/dns-type.c +++ b/src/resolve/dns-type.c @@ -193,6 +193,23 @@ bool dns_type_is_obsolete(uint16_t type) { DNS_TYPE_NULL); } +bool dns_type_needs_authentication(uint16_t type) { + + /* Returns true for all (non-obsolete) RR types where records are not useful if they aren't + * authenticated. I.e. everything that contains crypto keys. */ + + return IN_SET(type, + DNS_TYPE_CERT, + DNS_TYPE_SSHFP, + DNS_TYPE_IPSECKEY, + DNS_TYPE_DS, + DNS_TYPE_DNSKEY, + DNS_TYPE_TLSA, + DNS_TYPE_CDNSKEY, + DNS_TYPE_OPENPGPKEY, + DNS_TYPE_CAA); +} + int dns_type_to_af(uint16_t t) { switch (t) { diff --git a/src/resolve/dns-type.h b/src/resolve/dns-type.h index f18ac6eef3..fb7babf12a 100644 --- a/src/resolve/dns-type.h +++ b/src/resolve/dns-type.h @@ -132,6 +132,7 @@ bool dns_type_is_dnssec(uint16_t type); bool dns_type_is_obsolete(uint16_t type); bool dns_type_may_wildcard(uint16_t type); bool dns_type_apex_only(uint16_t type); +bool dns_type_needs_authentication(uint16_t type); int dns_type_to_af(uint16_t t); bool dns_class_is_pseudo(uint16_t class); diff --git a/src/resolve/resolve-tool.c b/src/resolve/resolve-tool.c index 9aade8e490..c1be03fbb2 100644 --- a/src/resolve/resolve-tool.c +++ b/src/resolve/resolve-tool.c @@ -339,6 +339,7 @@ static int resolve_record(sd_bus *bus, const char *name, uint16_t class, uint16_ uint64_t flags; int r; usec_t ts; + bool needs_authentication = false; assert(name); @@ -421,6 +422,10 @@ static int resolve_record(sd_bus *bus, const char *name, uint16_t class, uint16_ log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex); printf("%s%s%s\n", s, isempty(ifname) ? "" : " # interface ", ifname); + + if (dns_type_needs_authentication(t)) + needs_authentication = true; + n++; } if (r < 0) @@ -441,6 +446,18 @@ static int resolve_record(sd_bus *bus, const char *name, uint16_t class, uint16_ print_source(flags, ts); + if ((flags & SD_RESOLVED_AUTHENTICATED) == 0 && needs_authentication) { + fflush(stdout); + + fprintf(stderr, "\n%s" + "WARNING: The resources shown contain cryptographic key data which could not be\n" + " authenticated. It is not suitable to authenticate any communication.\n" + " This is usually indication that DNSSEC authentication was not enabled\n" + " or is not available for the selected protocol or DNS servers.%s\n", + ansi_highlight_red(), + ansi_normal()); + } + return 0; } |