Commit Graph

30450 Commits

Author SHA1 Message Date
Nicolas Williams
d1e7650988 krb5: Fix skew bug, or krb5_copy_context() moar
Now that we use krb5_copy_context() via kadm5_c_dup_context(), we see
occasional skew errors in the tests because context->max_skew was not
being initialized, so it was set to 0s of skew, and krb5_rd_priv() or
others could fail.
2022-03-24 16:41:22 -05:00
Nicolas Williams
d5e21b7771 GitHub: Do not build docs in OS X
Texinfo in the GitHub OS X runners must be ancient.  Even Texinfo 5.1
can handle UTF-8.

    ```
      MAKEINFO /Users/runner/work/heimdal/heimdal/doc/heimdal.info
    /Users/runner/work/heimdal/heimdal/doc/hx509.texi:11: warning: unrecognized encoding name `UTF-8'.
    /Users/runner/work/heimdal/heimdal/doc/heimdal.texi:12: warning: unrecognized encoding name `UTF-8'.
    /Users/runner/work/heimdal/heimdal/doc//setup.texi:380: Next field of node `Using soft aliases for configuring referrals' not pointed to (perhaps incorrect sectioning?).
    /Users/runner/work/heimdal/heimdal/doc//setup.texi:404: This node (Checking the setup) has the bad Prev.
    /Users/runner/work/heimdal/heimdal/doc//setup.texi:350: Prev field of node `Using hard aliases for realm migration' not pointed to.
    /Users/runner/work/heimdal/heimdal/doc//setup.texi:310: This node (Using namespaces and synthetic principals to keep the database small) has the bad Next.
    makeinfo: Removing output file `/Users/runner/work/heimdal/heimdal/doc/heimdal.info' due to errors; use --force to preserve.
    make[1]: *** [/Users/runner/work/heimdal/heimdal/doc/heimdal.info] Error 1
    ```
2022-03-24 15:00:37 -05:00
Nicolas Williams
0068ff7a94 kadmin: Fix re-entrance in iterations (part 2) 2022-03-24 14:58:10 -05:00
Nicolas Williams
a4d3832675 kadmin: Remove unnecessary callback data ret field 2022-03-24 14:52:22 -05:00
Nicolas Williams
6b64ae2cde kadmin: Fix leak of dup context 2022-03-23 23:39:34 -05:00
Nicolas Williams
990250e462 kadm5: Fix leak in kadm5_c_dup_context() 2022-03-23 23:39:34 -05:00
Nicolas Williams
1e1d663bb5 kadm5: Fix failure to connect in dup handle 2022-03-23 23:39:34 -05:00
Nicolas Williams
621deed047 kadmin: Fix re-entrance in iterations
Any callback of kadm5_iter_principals() that wants to call other kadm5
functions (such as kadm5_get_principal()) needs to do so on a different
kadm5 handle than the one used for kadm5_iter_principals().
2022-03-23 18:03:38 -05:00
Nicolas Williams
c667c28f61 doc: Revert part of 0878a568f9 for Texinfo 5.1
0878a568f9 fixed a warning from Texinfo 6.7:

    doc/whatis.texi:33: warning: redefining Texinfo language command: @sub

but the fix makes the doc build fail w/ Texinfo 5.1.

There may still be other problems when using Texinfo 5.1.
2022-03-23 15:13:36 -05:00
Nicolas Williams
2f6a276251 hdb: Tolerate duplicate aliases
One user had an entry with duplicate aliases.  This happened with an
earlier version of Heimdal.

This commit does not remove the duplicates, but it does tolerate them.
2022-03-23 15:02:05 -05:00
Nicolas Williams
d172a8bd79 kdc: More testing of hard aliases
This is an attempt to make sure we test realm migration aliases by doing
kinit w/ a hard alias name in a different realm, and that we can get
service tickets for services in the same and other realms some of which
are hard aliases in one direction, and some in the other.
2022-03-23 12:46:00 -05:00
Nicolas Williams
4b9faa02b0 krb5: Fix KCM for root user 2022-03-22 23:36:18 -05:00
Nicolas Williams
6b45c3512e kadmin: LIST interrupt message needs no reply
The online LIST interrupt message is a NOP, but it's expected to not
have a reply (the server doesn't send one if it receives it before the
LIST finishes).

However, if the interrupt message arrives after the LIST finished, then
it does get a reply, and this causes the client to get out of step with
the server.

Fixes include:

1) flavor the interrupt NOP to make sure it never gets a reply,
2) introduce a new kadm_list_interrtupt message that is like a NOP that
   produces no reply
3) always consume -after the LIST ends- a reply to any list interrupt
   NOP on the client side.

This implements (1).
2022-03-22 17:07:34 -05:00
Nicolas Williams
f037a0a57f kadm5: Add missing kadm5_ret_principal_ent() check 2022-03-22 17:07:34 -05:00
Romain F
5dd29ecd2c KCM: Memory leak in handle_read
The `inmsg` field of the client structure is malloc/realloc'ed in `handle_read` but never free'ed in `maybe_close`.
Seems like Apple already fixed that with this.
2022-03-21 13:54:04 -05:00
Nicolas Williams
1dbfd4e835 kadmin: Use kadm5_iter_principals() to list princs
Now that we have a properly working API for listing principals in an
online way, and a server-side implementation of it, use it.

This should work with old and new servers, but it will only be online
and fast when talking to new servers.

(Old servers have a bug though that prevents LIST from working.)
2022-03-20 18:32:14 -05:00
Nicolas Williams
b92a02edda kadmind: Online LIST using kadm5_iter_principals()
Implement a variation on the op for listing principals where if the
client indicates support for the new variation then we stream the list
instead of collecting it into one reply.  This is the server-side
version of the associated, preceding commit:

    kadm5: Add online kadm5_iter_principals()
2022-03-20 18:30:21 -05:00
Nicolas Williams
ed4b1be5bb kadm5: Add online kadm5_iter_principals()
kadm5_get_principals() is not online.  If you have... many principals,
it will be slow.  At least it's no longer quadratic, but it, it's still
slow.  Time to add a version that uses a callback:

    kadm5_ret_t
    kadm5_iter_principals(void *server_handle,
                          const char *expression,
                          int (*cb)(void *, const char *),
                          void *cbdata)

The callback gets called with the given callback data and one principal
name (unparsed).

Note that the callback MUST NOT re-enter the kadm5 library with the
*same* kadm handle.  For example, the kadmin protocol doesn't really
multiplex requests well, though it could pipeline them, but it can't
pipeline when LIST is running, not with the protocol implemented here,
so a separate connection is needed, and that requires a separate kadm
handle.  We add kadm5_dup_context() to deal with this.
2022-03-20 18:27:03 -05:00
Nicolas Williams
e6a543fa1a tests: Make tests/kdc/check-kadmin fast
Not sure why we ever needed the run-kadmind-for-one-operation approach
to testing.  Anyways, we probably don't.  Ditching that and using the
--detach mechanism of daemonization means we don't need to sleep in the
test (except when we need to restart kadmind with different options).
2022-03-20 18:24:19 -05:00
Nicolas Williams
14ce7bbaca kadmind: Send error code back... on error!
Seeing "End of file" errors from kadm5 client calls which were the
result of not sending back errors in many error paths in
kadmin/server.c:kadmind_dispatch().
2022-03-20 18:23:17 -05:00
Nicolas Williams
7556a114e1 kadmind: Fix typos leading to reply failures 2022-03-20 18:20:53 -05:00
Nicolas Williams
7827b3a91c kadm5: Make kadm5_get_principals() not quadratic 2022-03-18 18:33:53 -05:00
Nicolas Williams
fa92fe37e7 hdb: Make lmdb backend re-entrant 2022-03-18 18:33:53 -05:00
Nicolas Williams
5a0aaf9e19 krb5: Fix leak in default an2ln DB plugin 2022-03-18 18:33:53 -05:00
Nicolas Williams
a26c30b230 krb5: Initialize krb5_ret_string() output param 2022-03-18 18:33:53 -05:00
Nicolas Williams
aa04fb0fbe doc: Document principal aliasing in Texinfo docs 2022-03-17 20:43:32 -05:00
Nicolas Williams
c2ed63ba40 kadmin: Document hard and soft aliases 2022-03-17 20:43:32 -05:00
Nicolas Williams
1acb961bc1 kdc: Implement hard and soft principal aliases
We introduced a notion of soft vs. hard aliases in the previous commit
(hdb: Distinguish soft and hard principal aliases).

This commit corrects existing test cases and adds new test cases.

Soft aliases allow for the configuration of referrals using HDB entries.

Hard aliases are like copies of the aliased HDB entries.  These are
useful for renaming principals (and realms).

See the preceding commit.
2022-03-17 20:43:32 -05:00
Nicolas Williams
dcf2bdfb20 hdb: Distinguish soft and hard principal aliases
We introduce a notion of soft vs. hard aliases.

Soft aliases are aliases of WELLKNOWN/REFERRALS/TARGET@$some_realm,
where $some_realm is the realm we want the KDC to issue referrals to.

Hard aliases are all other aliases, where if the client requested
canonicalization then the KDC should update the names in the responses,
or else if the client did not request canonicalization, then the KDC
should treat the alias as a distinct principal with the same keys as the
alias' canonical name.

The logic for dealing with these is entirely located in the HDB
backends.

An HDB backend can implement hard aliases by replacing a found
HDB_entry's principal with the name used to look it up.

An HDB backend can implement soft aliases by returning
HDB_ERR_WRONG_REALM to trigger the AS or TGS to return a referral.

Currently only in-tree HDB backends support this feature that use
_hdb_fetch_kvno() as their hdb_fetch_kvno() method implementation.
That's all HDB backends other than SQLite3.

Out-of-tree backends should be unaffected.

We've added a decoration field to HDB_entry: aliased -- an int
(boolean).  This is only used internally in libhdb at this time.
Out-of-tree HDB backends could have a use for this decoration, but we
have not decided whether it is a public interface yet.
2022-03-17 20:43:32 -05:00
Nicolas Williams
db0ba731ca asn1: Allow comments and leading ws in opt files 2022-03-17 17:19:31 -05:00
Nicolas Williams
f072249d26 doc: Delete doc/kerberos4.texi 2022-03-16 18:24:25 -05:00
Nicolas Williams
a460911b03 doc: Document namespaces and synthetic principals 2022-03-16 17:50:33 -05:00
Nicolas Williams
0878a568f9 doc: Fix Texinfo docs; remove krb4 references 2022-03-16 17:50:33 -05:00
Nicolas Williams
dcef1341d3 kdc: Add error symbols for error logging
Having "KRB5KRB_AP_ERR_ILL_CR_TKT" in log messages is much better than
"UNKNOWN--1765328341".
2022-03-16 15:04:10 -05:00
Nicolas Williams
78162449b5 base: Correct UNKNOWN-0 error case
In some cases we were seeing UNKNOWN-0 when an actual error occurred.
2022-03-16 15:04:10 -05:00
Nicolas Williams
4eb80e0e93 kadm5: deltat2str(): Improve "unlimited" 2022-03-14 13:41:47 -05:00
Nicolas Williams
b14f9b1ac0 kadm5: Tolerate missing default principal 2022-03-14 13:41:47 -05:00
Joseph Sutton
698bbb5647 roken: Fix time_t overflow checking
INTxx_MIN plus a positive integer of the same type will always be
negative, and so the result will always compare less than a positive
integer. Fix this check so that we produce the correct result when
adding two negative time_t values.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
2022-03-11 22:03:45 -05:00
Stefan Metzmacher
0861754a84 lib/krb5: before we create a new FAST armor we should clear the old strengthen_key
In a cross-realm situation the client KDC exchange may use on orphaned
strengthen_key (from the previous exchange) if the current KDC
doesn't not support FAST and the previous KDC supported it.

Otherwise init_creds_step() or fast_tgs_strengthen_key()
generate the reply key.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15005

Signed-off-by: Stefan Metzmacher <metze@samba.org>
2022-03-12 12:51:03 +11:00
Nicolas Williams
953d944242 gss: Remove useless grep from check-context 2022-03-09 10:22:06 -06:00
Joseph Sutton
d5ad04a7f3 kdc: Add function to add encrypted padata
Since plugins no longer have a way of accessing the 'ek' member of the
request structure, this function provides a way for a plugin to add
encrypted padata to the response.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
2022-03-08 18:58:17 +11:00
Joseph Sutton
4a23cd5e23 lib/krb5: Make parameters to PAC functions 'const'
This allows these functions to be used with PACs obtained from KDC
accessor functions such as kdc_request_get_pac().

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
2022-03-08 18:58:01 +11:00
Stefan Metzmacher
7d103f8657 hdb: Fix crashes with WRONG_REALM
With HDB_ERR_WRONG_REALM the backend needs to expose the
principal, so we should not free the entry otherwise
the main kdc code will crash.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
2022-03-04 10:24:01 +11:00
Jeffrey Altman
19b337a0fb lib/asn1: new ASN1 objects require new exports
free_KERB_AD_RESTRICTION_ENTRY
encode_KERB_AD_RESTRICTION_ENTRY
decode_KERB_AD_RESTRICTION_ENTRY
length_KERB_AD_RESTRICTION_ENTRY
copy_KERB_AD_RESTRICTION_ENTRY

free_PA_KERB_KEY_LIST_REP
encode_PA_KERB_KEY_LIST_REP
decode_PA_KERB_KEY_LIST_REP
length_PA_KERB_KEY_LIST_REP
copy_PA_KERB_KEY_LIST_REP

free_PA_KERB_KEY_LIST_REQ
encode_PA_KERB_KEY_LIST_REQ
decode_PA_KERB_KEY_LIST_REQ
length_PA_KERB_KEY_LIST_REQ
copy_PA_KERB_KEY_LIST_REQ

free_PA_PAC_OPTIONS
encode_PA_PAC_OPTIONS
decode_PA_PAC_OPTIONS
length_PA_PAC_OPTIONS
copy_PA_PAC_OPTIONS

free_PA_S4U_X509_USER
encode_PA_S4U_X509_USER
decode_PA_S4U_X509_USER
length_PA_S4U_X509_USER
copy_PA_S4U_X509_USER

Change-Id: I4ccbfcec64572b41878062e50a61de3f92fdf593
2022-03-03 12:05:14 -05:00
Jeffrey Altman
a8b2986b48 lib/krb5: make/copy principal init output to NULL
Initialize output principal pointer to NULL in case of failure.

Change-Id: Iaf7b204d33ddf28cdbadcceac2cb8a96ac0bdd94
2022-03-03 09:55:46 -05:00
Luke Howard
25fae63097 tests: update test KDC plugin for new PAC plugin signatures
Fixes regression introduced in 11d8a053.
2022-03-03 10:16:12 +11:00
Stefan Metzmacher
d4ac17d6d0 krb5: add new values and definitions from MS-KILE/MS-SFU
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2022-03-03 10:13:42 +11:00
Luke Howard
50fb794ef1 lib/krb5: re-allow data->length == 0 in krb5_pac_add_buffer()
PAC_TYPE_CLIENT_CLAIMS_INFO and PAC_TYPE_DEVICE_CLAIMS_INFO are
of zero length unless any claims are actually defined.

Signed-off-by: Stefan Metzmacher <metze@samba.org>

Closes: #969
2022-03-03 10:12:40 +11:00
Luke Howard
89cf441e8d Revert "lib/krb5: re-allow data->length == 0 in krb5_pac_add_buffer()"
This reverts commit f3301fc94c.
2022-03-03 10:11:32 +11:00
Stefan Metzmacher
f3301fc94c lib/krb5: re-allow data->length == 0 in krb5_pac_add_buffer()
PAC_TYPE_CLIENT_CLAIMS_INFO and PAC_TYPE_DEVICE_CLAIMS_INFO are
of zero length unless any claims are actually defined.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
2022-03-03 10:10:57 +11:00