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add krb5-selfsub and ms-selfsub

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(cherry picked from commit fbeefd4990)
This commit is contained in:
Mark Andrews 2018-08-30 18:31:17 +10:00
parent 6ff17d94bf
commit b2ffe56fc5
7 changed files with 151 additions and 73 deletions
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31
doc/arm/Bv9ARM-book.xml
View file

@ -12573,12 +12573,13 @@ example.com. NS ns2.example.net.
the rules are checked for each existing record type.
</para>
<para>
The <replaceable>ruletype</replaceable> field has 13
The <replaceable>ruletype</replaceable> field has 16
values:
<varname>name</varname>, <varname>subdomain</varname>,
<varname>wildcard</varname>, <varname>self</varname>,
<varname>selfsub</varname>, <varname>selfwild</varname>,
<varname>krb5-self</varname>, <varname>ms-self</varname>,
<varname>krb5-selfsub</varname>, <varname>ms-selfsub</varname>,
<varname>krb5-subdomain</varname>,
<varname>ms-subdomain</varname>,
<varname>tcp-self</varname>, <varname>6to4-self</varname>,
@ -12737,6 +12738,20 @@ example.com. NS ns2.example.net.
</para>
</entry>
</row>
<row rowsep="0">
<entry colname="1">
<para>
<varname>ms-selfsub</varname>
</para>
</entry> <entry colname="2">
<para>
This is similar to <command>ms-self</command>
except it also allows updates to any subdomain of
the name specified in the Windows machine
principal, not just to the name itself.
</para>
</entry>
</row>
<row rowsep="0">
<entry colname="1">
<para>
@ -12808,6 +12823,20 @@ example.com. NS ns2.example.net.
</para>
</entry>
</row>
<row rowsep="0">
<entry colname="1">
<para>
<varname>krb5-selfsub</varname>
</para>
</entry> <entry colname="2">
<para>
This is similar to <command>krb5-self</command>
except it also allows updates to any subdomain of
the name specified in the 'machine' part of the
Kerberos principal, not just to the name itself.
</para>
</entry>
</row>
<row rowsep="0">
<entry colname="1">
<para>

2
lib/bind9/check.c
View file

@ -1731,6 +1731,8 @@ check_update_policy(const cfg_obj_t *policy, isc_log_t *logctx) {
break;
case dns_ssumatchtype_selfkrb5:
case dns_ssumatchtype_selfms:
case dns_ssumatchtype_selfsubkrb5:
case dns_ssumatchtype_selfsubms:
case dns_ssumatchtype_tcpself:
case dns_ssumatchtype_6to4self:
if (tresult == ISC_R_SUCCESS &&

86
lib/dns/gssapictx.c
View file

@ -345,12 +345,13 @@ cleanup:
}
bool
dst_gssapi_identitymatchesrealmkrb5(dns_name_t *signer, dns_name_t *name,
dns_name_t *realm)
dst_gssapi_identitymatchesrealmkrb5(const dns_name_t *signer,
const dns_name_t *name,
const dns_name_t *realm,
bool subdomain)
{
#ifdef GSSAPI
char sbuf[DNS_NAME_FORMATSIZE];
char nbuf[DNS_NAME_FORMATSIZE];
char rbuf[DNS_NAME_FORMATSIZE];
char *sname;
char *rname;
@ -365,8 +366,6 @@ dst_gssapi_identitymatchesrealmkrb5(dns_name_t *signer, dns_name_t *name,
result = dns_name_toprincipal(signer, &buffer);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
isc_buffer_putuint8(&buffer, 0);
if (name != NULL)
dns_name_format(name, nbuf, sizeof(nbuf));
dns_name_format(realm, rbuf, sizeof(rbuf));
/*
@ -380,6 +379,10 @@ dst_gssapi_identitymatchesrealmkrb5(dns_name_t *signer, dns_name_t *name,
*rname = '\0';
rname++;
if (strcmp(rname, rbuf) != 0) {
return (false);
}
/*
* Find the host portion of the signer's name. We do this by
* searching for the first / character. We then check to make
@ -397,36 +400,44 @@ dst_gssapi_identitymatchesrealmkrb5(dns_name_t *signer, dns_name_t *name,
return (false);
/*
* Now, we do a simple comparison between the name and the realm.
* If name is non NULL check that it matches against the
* machine name as expected.
*/
if (name != NULL) {
if ((strcasecmp(sname, nbuf) == 0)
&& (strcmp(rname, rbuf) == 0))
return (true);
} else {
if (strcmp(rname, rbuf) == 0)
return (true);
dns_fixedname_t fixed;
dns_name_t *machine;
machine = dns_fixedname_initname(&fixed);
result = dns_name_fromstring(machine, sname, 0, NULL);
if (result != ISC_R_SUCCESS) {
return (false);
}
if (subdomain) {
return (dns_name_issubdomain(name, machine));
}
return (dns_name_equal(name, machine));
}
return (false);
return (true);
#else
UNUSED(signer);
UNUSED(name);
UNUSED(realm);
UNUSED(subdomain);
return (false);
#endif
}
bool
dst_gssapi_identitymatchesrealmms(dns_name_t *signer, dns_name_t *name,
dns_name_t *realm)
dst_gssapi_identitymatchesrealmms(const dns_name_t *signer,
const dns_name_t *name,
const dns_name_t *realm,
bool subdomain)
{
#ifdef GSSAPI
char sbuf[DNS_NAME_FORMATSIZE];
char nbuf[DNS_NAME_FORMATSIZE];
char rbuf[DNS_NAME_FORMATSIZE];
char *sname;
char *nname;
char *rname;
isc_buffer_t buffer;
isc_result_t result;
@ -439,8 +450,6 @@ dst_gssapi_identitymatchesrealmms(dns_name_t *signer, dns_name_t *name,
result = dns_name_toprincipal(signer, &buffer);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
isc_buffer_putuint8(&buffer, 0);
if (name != NULL)
dns_name_format(name, nbuf, sizeof(nbuf));
dns_name_format(realm, rbuf, sizeof(rbuf));
/*
@ -474,36 +483,35 @@ dst_gssapi_identitymatchesrealmms(dns_name_t *signer, dns_name_t *name,
*sname = '\0';
sname = sbuf;
if (strcmp(rname, rbuf) != 0) {
return (false);
}
/*
* Find the first . in the target name, and make it the end of
* the string. The rest of the name has to match the realm.
* Now, we check that the realm matches (case sensitive) and that
* 'name' matches against 'machinename' qualified with 'realm'.
*/
if (name != NULL) {
nname = strchr(nbuf, '.');
if (nname == NULL)
dns_fixedname_t fixed;
dns_name_t *machine;
machine = dns_fixedname_initname(&fixed);
result = dns_name_fromstring2(machine, sbuf, realm, 0, NULL);
if (result != ISC_R_SUCCESS) {
return (false);
*nname++ = '\0';
}
if (subdomain) {
return (dns_name_issubdomain(name, machine));
}
return (dns_name_equal(name, machine));
}
/*
* Now, we do a simple comparison between the name and the realm.
*/
if (name != NULL) {
if ((strcasecmp(sname, nbuf) == 0)
&& (strcmp(rname, rbuf) == 0)
&& (strcasecmp(nname, rbuf) == 0))
return (true);
} else {
if (strcmp(rname, rbuf) == 0)
return (true);
}
return (false);
return (true);
#else
UNUSED(signer);
UNUSED(name);
UNUSED(realm);
UNUSED(subdomain);
return (false);
#endif
}

6
lib/dns/include/dns/ssu.h
View file

@ -39,9 +39,11 @@ typedef enum {
dns_ssumatchtype_6to4self = 11,
dns_ssumatchtype_external = 12,
dns_ssumatchtype_local = 13,
dns_ssumatchtype_max = 13, /* max value */
dns_ssumatchtype_selfsubms = 14,
dns_ssumatchtype_selfsubkrb5 = 15,
dns_ssumatchtype_max = 15, /* max value */
dns_ssumatchtype_dlz = 14 /* intentionally higher than _max */
dns_ssumatchtype_dlz = 16 /* intentionally higher than _max */
} dns_ssumatchtype_t;
#define DNS_SSUMATCHTYPE_NAME dns_ssumatchtype_name

12
lib/dns/include/dst/gssapi.h
View file

@ -187,8 +187,10 @@ gss_error_tostring(uint32_t major, uint32_t minor,
*/
bool
dst_gssapi_identitymatchesrealmkrb5(dns_name_t *signer, dns_name_t *name,
dns_name_t *realm);
dst_gssapi_identitymatchesrealmkrb5(const dns_name_t *signer,
const dns_name_t *name,
const dns_name_t *realm,
bool subdomain);
/*
* Compare a "signer" (in the format of a Kerberos-format Kerberos5
* principal: host/example.com@EXAMPLE.COM) to the realm name stored
@ -197,8 +199,10 @@ dst_gssapi_identitymatchesrealmkrb5(dns_name_t *signer, dns_name_t *name,
*/
bool
dst_gssapi_identitymatchesrealmms(dns_name_t *signer, dns_name_t *name,
dns_name_t *realm);
dst_gssapi_identitymatchesrealmms(const dns_name_t *signer,
const dns_name_t *name,
const dns_name_t *realm,
bool subdomain);
/*
* Compare a "signer" (in the format of a Kerberos-format Kerberos5
* principal: host/example.com@EXAMPLE.COM) to the realm name stored

80
lib/dns/ssu.c
View file

@ -395,10 +395,12 @@ dns_ssutable_checkrules2(dns_ssutable_t *table, dns_name_t *signer,
continue;
}
break;
case DNS_SSUMATCHTYPE_SELFKRB5:
case DNS_SSUMATCHTYPE_SELFMS:
case DNS_SSUMATCHTYPE_SUBDOMAINKRB5:
case DNS_SSUMATCHTYPE_SUBDOMAINMS:
case dns_ssumatchtype_selfkrb5:
case dns_ssumatchtype_selfms:
case dns_ssumatchtype_selfsubkrb5:
case dns_ssumatchtype_selfsubms:
case dns_ssumatchtype_subdomainkrb5:
case dns_ssumatchtype_subdomainms:
if (signer == NULL)
continue;
break;
@ -462,30 +464,56 @@ dns_ssutable_checkrules2(dns_ssutable_t *table, dns_name_t *signer,
if (!dns_name_matcheswildcard(name, wildcard))
continue;
break;
case DNS_SSUMATCHTYPE_SELFKRB5:
if (!dst_gssapi_identitymatchesrealmkrb5(signer, name,
rule->identity))
continue;
break;
case DNS_SSUMATCHTYPE_SELFMS:
if (!dst_gssapi_identitymatchesrealmms(signer, name,
rule->identity))
continue;
break;
case DNS_SSUMATCHTYPE_SUBDOMAINKRB5:
case dns_ssumatchtype_selfkrb5:
if (dst_gssapi_identitymatchesrealmkrb5(signer, name,
rule->identity,
false))
{
break;
}
continue;
case dns_ssumatchtype_selfms:
if (dst_gssapi_identitymatchesrealmms(signer, name,
rule->identity,
false))
{
break;
}
continue;
case dns_ssumatchtype_selfsubkrb5:
if (dst_gssapi_identitymatchesrealmkrb5(signer, name,
rule->identity,
true))
{
break;
}
continue;
case dns_ssumatchtype_selfsubms:
if (dst_gssapi_identitymatchesrealmms(signer, name,
rule->identity,
true))
break;
continue;
case dns_ssumatchtype_subdomainkrb5:
if (!dns_name_issubdomain(name, rule->name))
continue;
if (!dst_gssapi_identitymatchesrealmkrb5(signer, NULL,
rule->identity))
continue;
break;
case DNS_SSUMATCHTYPE_SUBDOMAINMS:
if (dst_gssapi_identitymatchesrealmkrb5(signer, NULL,
rule->identity,
false))
{
break;
}
continue;
case dns_ssumatchtype_subdomainms:
if (!dns_name_issubdomain(name, rule->name))
continue;
if (!dst_gssapi_identitymatchesrealmms(signer, NULL,
rule->identity))
continue;
break;
if (dst_gssapi_identitymatchesrealmms(signer, NULL,
rule->identity,
false))
{
break;
}
continue;
case DNS_SSUMATCHTYPE_TCPSELF:
tcpself = dns_fixedname_initname(&fixed);
reverse_from_address(tcpself, addr);
@ -658,8 +686,12 @@ dns_ssu_mtypefromstring(const char *str, dns_ssumatchtype_t *mtype) {
*mtype = dns_ssumatchtype_selfwild;
} else if (strcasecmp(str, "ms-self") == 0) {
*mtype = dns_ssumatchtype_selfms;
} else if (strcasecmp(str, "ms-selfsub") == 0) {
*mtype = dns_ssumatchtype_selfsubms;
} else if (strcasecmp(str, "krb5-self") == 0) {
*mtype = dns_ssumatchtype_selfkrb5;
} else if (strcasecmp(str, "krb5-selfsub") == 0) {
*mtype = dns_ssumatchtype_selfsubkrb5;
} else if (strcasecmp(str, "ms-subdomain") == 0) {
*mtype = dns_ssumatchtype_subdomainms;
} else if (strcasecmp(str, "krb5-subdomain") == 0) {

7
lib/isccfg/namedconf.c
View file

@ -320,9 +320,10 @@ doc_matchname(cfg_printer_t *pctx, const cfg_type_t *type) {
}
static const char *matchtype_enums[] = {
"6to4-self", "external", "krb5-self", "krb5-subdomain", "ms-self",
"ms-subdomain", "name", "self", "selfsub", "selfwild", "subdomain",
"tcp-self", "wildcard", "zonesub", NULL
"6to4-self", "external", "krb5-self", "krb5-selfsub",
"krb5-subdomain", "ms-self", "ms-selfsub", "ms-subdomain",
"name", "self", "selfsub", "selfwild", "subdomain", "tcp-self",
"wildcard", "zonesub", NULL
};
static cfg_type_t cfg_type_matchtype = {