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* Let SPNEGO display mechanism errorsSimo Sorce2013-12-181-0/+1
| | | | | | | | | | | | | | | To avoid potential recursion we use a thread local variable that tells us whether the ancestor was called via spnego_gss_display_name(). If we detect recursion, we assume that we returned a com_err code like ENOMEM and call error_message(); in the worst case that will result in an "Unknown error" message. [ghudson@mit.edu: Edited comments and commit message; removed an unneeded line of code.] ticket: 7045 target_version: 1.12.1 tags: pullup
* Remove unused krb5_context fieldsGreg Hudson2013-12-181-2/+0
| | | | | The vtbl and locate_fptrs fields were ostensibly related to the locate pluggable interface, but weren't actually used.
* Don't require krb5.conf without KRB5_DNS_LOOKUPGreg Hudson2013-12-161-4/+0
| | | | | | | | | | | | For a long time we have allowed krb5 contexts to be initialized in the absence of krb5.conf--but only if KRB5_DNS_LOOKUP is defined, presumably on the theory that no KDCs could be contacted without either DNS support or profile configuration. But locate plugins could provide the ability to find KDCs, and some libkrb5 operations (such as IAKERB initiation) could succeed without needing to locate KDCs. Also get rid of the profile_in_memory context flag, since we don't use it any more.
* Modernize sn2princ.cGreg Hudson2013-12-111-12/+0
| | | | | Refactor and edit sn2princ.c to match current coding style. No behavior changes, except to be less chatty in trace logs.
* Add new versions of log_badauth gssrpc callbacksGreg Hudson2013-11-252-0/+15
| | | | | | | | | | libgssrpc supports two callbacks for gss_accept_sec_context failures on servers (one for AUTH_GSS and one for AUTH_GSSAPI), which are IPv4-specific. Provide an alternate version which supplies the transport handle instead of the address, so that we can get the address via the file descriptor for TCP connections. ticket: 7770
* Improve default ccache name API documentationGreg Hudson2013-11-221-6/+25
| | | | | | | | | | | | Document the lifetime and caching behavior of the krb5_cc_default_name() return value. Document that krb5_cc_set_default_name() may be called with NULL to purge the cached value. Correct a typo in the krb5_cc_default() summary and explicitly reference krb5_cc_default_name(). ticket: 7775 (new) target_version: 1.12 tags: pullup
* Make set_cloexec_fd return voidBen Kaduk2013-11-041-10/+7
| | | | | | | | | We never check its return value (causing clang to emit warnings), and its use is primarily in cases where we should continue processing in the event of failure. Just ignore errors from the underlying fcntl() call (if present) and treat this operation as best-effort. The #if 0 code should probably be removed.
* KDC Audit infrastructure and plugin implementationZhanna Tsitkov2013-10-042-1/+272
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Per project http://k5wiki.kerberos.org/wiki/Projects/Audit The purpose of this project is to create an Audit infrastructure to monitor security related events on the KDC. The following events are targeted in the initial version: - startup and shutdown of the KDC; - AS_REQ and TGS_REQ exchanges. This includes client address and port, KDC request and request ID, KDC reply, primary and derived ticket and their ticket IDs, second ticket ID, cross-realm referral, was ticket renewed and validated, local policy violation and protocol constraints, and KDC status message. Ticket ID is introduced to allow to link tickets to their initial TGT at any stage of the Kerberos exchange. For the purpose of this project it is a private to KDC ticket ID: each successfully created ticket is hashed and recorded into audit log. The administrators can correlate the primary and derived ticket IDs after the fact. Request ID is a randomly generated alpha-numeric string. Using this ID an administrator can easily correlate multiple audit events related to a single request. It should be informative both in cases when the request is sent to multiple KDCs, or to the same KDC multiple times. For the purpose of testing and demo of the Audit, the JSON based modules are implemented: "test" and "simple" audit modules respectively. The file plugins/audit/j_dict.h is a dictionary used in this implememtations. The new Audit system is build-time enabled and run-time pluggable. [kaduk@mit.edu: remove potential KDC crashes, minor reordering] ticket: 7712 target_version: 1.12
* Add an internal constant-time comparison functionGreg Hudson2013-10-031-0/+8
| | | | | | | k5_bcmp acts similarly to the deprecated Unix bcmp() function, returning zero if two memory regions are equal and nonzero if they are not. It is implemented such that it should take the same amount of time regardless of how many bytes are equal within the memory regions.
* Support authoritative KDB check_transited methodsGreg Hudson2013-09-251-2/+3
| | | | | | | | | In kdc_check_transited_list, consult the KDB module first. If it succeeds, treat this as authoritative and do not use the core transited mechanisms. Modules can return KRB5_PLUGIN_NO_HANDLE to fall back to core mechanisms. ticket: 7709
* Factor out krb5int_random_string() routineZhanna Tsitkov2013-09-241-0/+4
| | | | | Make krb5int_random_string() function available outside ccache code. Move it into a separate file under lib/krb5/krb hierarchy.
* Err codes in KRB_ERROR protocol messages are < 128Zhanna Tsitkov2013-09-231-0/+1
| | | | | | If the error code is out of [0,127] range, assign it to KRB_ERR_GENERIC. This fix is to correct the previous behavior with [0,128] range. For more information see krb5_err.et
* Correct comments in ccselect_plugin.hZhanna Tsitkov2013-09-181-3/+3
| | | | Some text mistakenly referred to password quality plugin.
* Add a flag to prevent all host canonicalizationGreg Hudson2013-09-061-0/+2
| | | | | | | | If dns_canonicalize_hostname is set to false in [libdefaults], krb5_sname_to_principal will not canonicalize the hostname using either forward or reverse lookups. ticket: 7703 (new)
* Fix FAST critical option bit checkingGreg Hudson2013-09-031-2/+2
| | | | | | | | | The FAST option bits 0-15 are intended to be critical--if they are present and a KDC does not support them, the KDC is supposed to fail the request. Because of an incorrect constant, we were erroneously recognizing bits 24-31 as critical. Fix the constant. ticket: 7701 (new)
* Support FAST hide-client-names optionGreg Hudson2013-09-031-1/+1
| | | | | | | | In the KDC, if we see the hide-client-names option, identify the client as the anonymous principal in KDC-REP and KRB-ERROR responses. The actual client name is present in encrypted FAST elements. ticket: 7700 (new)
* Use hostrealm interface for realm mappingGreg Hudson2013-08-152-6/+9
| | | | | | | | | Reimplement krb5_get_host_realm, krb5_get_fallback_host_realm, and krb5_get_default_realm in terms of the hostrealm interface. Three built-in modules (dns, domain, and profile) implement the current behavior. ticket: 7687
* Add hostrealm pluggable interface definitionGreg Hudson2013-08-153-1/+138
| | | | ticket: 7687 (new)
* Add trace logging for TXT lookupsGreg Hudson2013-08-121-0/+5
| | | | | | Rename krb5_try_realm_txt_rr (an internal function despite the name) and add a context parameter. Generate trace logs when we successfully look up a record and when a record is not found.
* Report KDC response sizes in trace logsGreg Hudson2013-08-071-2/+2
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* Correct an error in kdb.h commentsGreg Hudson2013-08-051-2/+2
| | | | | The check_policy functions return com_err codes, not protocol codes, so use a com_err constant in the example.
* Document krb5_db_iterate restriction on writingGreg Hudson2013-07-311-0/+6
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* Add non-JSON APIs for PKINIT responder itemsNalin Dahyabhai2013-07-171-0/+59
| | | | | | | | | | | | | | | | | Add wrappers for the JSON-oriented APIs for PKINIT responder items, modeled after the API we provide for OTP items: * krb5_responder_pkinit_get_challenge() returns the list of identities for which we need PINs * krb5_responder_pkinit_challenge_free() frees the structure that was returned by krb5_responder_pkinit_get_challenge() * krb5_responder_pkinit_set_answer() sets the answer to the PIN for one of the identities [ghudson@mit.edu: style cleanup; added comment pointing to main body of PKINIT module] ticket: 7680
* Pass PKINIT identity prompts to the responder cbNalin Dahyabhai2013-07-171-0/+44
| | | | | | | | | | | | | | | | | Use the list of deferred identity prompts and warnings, which we have after calling pkinit_identity_initialize(), to build a list of questions to supply to responder callbacks. Before calling pkinit_identity_prompt() to actually load identities that are protected, save any passwords and PINs which a responder callback may have supplied. Because pkinit_client_prep_questions() can be called multiple times, and we don't want to try to load all of our identities each of those times, take some steps to ensure that we only call pkinit_identity_initialize() and pkinit_identity_prompt() once per request. ticket: 7680
* Clarify and improve k5_json_object_setGreg Hudson2013-07-161-1/+5
| | | | | Document that k5_json_object_set can be used to overwrite an existing key, and make it possible to remove a key by setting it to NULL.
* Add k5calloc internal helper functionGreg Hudson2013-07-111-2/+9
| | | | | | Letting calloc() do multiplication helps avoid overflow bugs, so provide an internal k5calloc() helper which accepts both calloc arguments, and reimplement k5alloc() in terms of it.
* Add libkradNathaniel McCallum2013-07-112-0/+265
| | | | | | | | The new library libkrad provides code for the parsing of RADIUS packets as well as client implementation based around libverto. This library should be considered unstable. ticket: 7678 (new)
* Install localauth_plugin.hGreg Hudson2013-07-011-0/+1
| | | | | The localauth pluggable interface was added on master in February, but we neglected to install its header file.
* Install ccselect_plugin.hGreg Hudson2013-07-011-0/+1
| | | | | | | | | The ccselect pluggable interface was added in release 1.10, but we neglected to install its header file. ticket: 7671 (new) target_version: 1.11.4 tags: pullup
* Provide plugin module ordering guaranteesGreg Hudson2013-06-271-12/+2
| | | | | | | | Rewrite the plugin internals so that modules have a well-defined order--either the order of enable_only tags, or dynamic modules followed by the built-in modules in order of registration. ticket: 7665 (new)
* Build with Visual Studio 2012Ben Kaduk2013-06-251-1/+3
| | | | | | | | | | | | It's more aggressive about enforcing that keywords are not macros in C++ mode, and has bumped the MFC version to 11. Keep compatibility with older versions of Visual Studio, appropriately conditionalized. ticket: 7664 (new) tags: pullup target_version: 1.11.4
* Fix various warningsGreg Hudson2013-06-071-5/+4
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* Clarify krb5_rd_req documentationGreg Hudson2013-05-221-9/+19
| | | | | | | | | | For the user-to-user case, document that callers should pass a server principal to krb5_rd_req. For the keytab case, more accurately document which keytab keys are tried against the ticket. ticket: 7641 (new) target_version: 1.11.3 tags: pullup
* Assume mutex locking cannot failGreg Hudson2013-05-141-14/+10
| | | | | | | | | | | | Locking and unlocking a non-recursive mutex is a simple memory operation and should not fail on any reasonable platform with correct usage. A pthread mutex can return EDEADLK on lock or EPERM on unlock, or EINVAL if the mutex is uninitialized, but all of these conditions would reflect serious bugs in the calling code. Change the k5_mutex_lock and k5_mutex_unlock wrappers to return void and adjust all call sites. Propagate this change through k5_cc_mutex_lock and k5_cc_mutex_unlock as well.
* Add kdcpreauth callback to check for client keysGreg Hudson2013-05-031-0/+8
| | | | | | | | Add a new have_client_keys callback to the kdcpreauth interface, allowing modules to efficiently check whether the client DB entry has any keys matching the request enctypes. ticket: 7630
* Add internal KDC_DIR macroGreg Hudson2013-04-291-10/+11
| | | | | Define KDC_DIR in osconf.hin and use it for paths within the KDC directory.
* Add a few comments to `PADATA types` in krb5.hinZhanna Tsitkov2013-04-181-27/+28
| | | | | Mostly, based on http://www.iana.org/assignments/kerberos-parameters/kerberos-parameters.xml
* Use macro for IANA assigned PA-AS-CHECKSUM numberZhanna Tsitkov2013-04-181-0/+1
| | | | | Replace numeric value '132' by the macro KRB5_PADATA_AS_CHECKSUM in preauth plugin.
* Get rid of cm.c and cm.hGreg Hudson2013-04-122-104/+0
| | | | | | | | | | | Since net-server.c now uses libverto, only sendto_kdc.c consumes cm.c. Move stuff out of cm.c and cm.h into sendto_kdc.c and get rid of them. Change the sendto_kdc callback (used by chpw.c) to receive the socket descriptor instead of the entire conn_state structure, and move the declarations into os-proto.h. struct remote_address also needs to be in os-proto.h so that trace.c and t_trace.c can use it. k5_curtime isn't needed since k5-platform.h now guarantees the presence of gettimeofday().
* Trace log with a subset of struct conn_stateGreg Hudson2013-04-122-31/+34
| | | | | | | In struct conn_state, collect together the fields for the remote address and put them in a substructure. Pass this substructure to trace logging macros instead of the entire conn_state structure, so that trace.c doesn't have to know about the whole structure.
* Update hst_realm.c coding styleGreg Hudson2013-04-091-10/+0
| | | | | Bring this file up to date with current coding style. No functional changes, except some trace logs were removed.
* Avoid passing null pointers to memcpy/memcmpGreg Hudson2013-04-081-7/+8
| | | | | | | | | | | | | | | By a strict reading of the C standard, memcpy and memcmp have undefined behavior if their pointer arguments aren't valid object pointers, even if the length argument is 0. Compilers are becoming more aggressive about breaking code with undefined behavior, so we should try to avoid it when possible. In a krb5_data object, we frequently use NULL as the data value when the length is 0. Accordingly, we should avoid copying from or comparing the data field of a length-0 krb5_data object. Add checks to our wrapper functions (like data_eq and k5_memdup) and to code which works with possibly-empty krb5_data objects. In a few places, use wrapper functions to simplify the code rather than adding checks.
* Add krb5_kt_dup API and use it in two placesGreg Hudson2013-04-011-0/+15
| | | | | | | Add an API to duplicate keytab handles, mirroring krb5_cc_dup. Use it to simplify the krb5 GSS acquire_cred code. ticket: 7599 (new)
* Get rid of krb5_xfreeGreg Hudson2013-03-281-3/+0
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* Replace "First introduced" with concise "New"Zhanna Tsitkov2013-03-251-37/+37
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* Move a bunch of stuff out of k5-int.hGreg Hudson2013-03-241-371/+0
| | | | | | | | | Move internal declarations from k5-int.h to more localized headers (like int-proto.h) where appropriate. Rename many symbols whose prototypes were moved to use the k5_ prefix instead of krb5int_. Remove some unused declarations or move them to the single source file they were needed in. Remove krb5_creds_compare since it isn't used any more.
* Get rid of krb5_{get,free}_krbhstGreg Hudson2013-03-221-2/+0
| | | | | These functions were always internal. They haven't been used since v5passwdd was eliminated in krb5 1.4.
* Get rid of osconfig.cGreg Hudson2013-03-221-3/+0
| | | | | These variables were marked as internal in 1996. Two are unused and the other is easily replaced with the macro it is initialized from.
* Remove stray include in localauth_plugin.hGreg Hudson2013-03-111-1/+0
| | | | | This unnecessary include was causing build failures on some systems by making libkrb5 sources depend on gssapi.h.
* Add localauth pluggable interfaceGreg Hudson2013-03-093-1/+153
| | | | | | | | Add a new pluggable interface for local authorization, and replace the existing krb5_aname_to_localname and krb5_kuserok implementations with implementations based on the pluggable interface. ticket: 7583 (new)
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