diff options
| author | Cy Schubert <cy@FreeBSD.org> | 2017-07-07 17:03:42 +0000 | 
|---|---|---|
| committer | Cy Schubert <cy@FreeBSD.org> | 2017-07-07 17:03:42 +0000 | 
| commit | 33a9b234e7087f573ef08cd7318c6497ba08b439 (patch) | |
| tree | d0ea40ad3bf5463a3c55795977c71bcb7d781b4b /src/ccapi/lib/ccapi_context.c | |
Diffstat (limited to 'src/ccapi/lib/ccapi_context.c')
| -rw-r--r-- | src/ccapi/lib/ccapi_context.c | 831 | 
1 files changed, 831 insertions, 0 deletions
| diff --git a/src/ccapi/lib/ccapi_context.c b/src/ccapi/lib/ccapi_context.c new file mode 100644 index 000000000000..cf677fc55142 --- /dev/null +++ b/src/ccapi/lib/ccapi_context.c @@ -0,0 +1,831 @@ +/* ccapi/lib/ccapi_context.c */ +/* + * Copyright 2006, 2007 Massachusetts Institute of Technology. + * All Rights Reserved. + * + * Export of this software from the United States of America may + * require a specific license from the United States Government. + * It is the responsibility of any person or organization contemplating + * export to obtain such a license before exporting. + * + * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and + * distribute this software and its documentation for any purpose and + * without fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright notice and + * this permission notice appear in supporting documentation, and that + * the name of M.I.T. not be used in advertising or publicity pertaining + * to distribution of the software without specific, written prior + * permission.  Furthermore if you modify this software you must label + * your software as modified software and not distribute it in such a + * fashion that it might be confused with the original M.I.T. software. + * M.I.T. makes no representations about the suitability of + * this software for any purpose.  It is provided "as is" without express + * or implied warranty. + */ + +#include "ccapi_context.h" + +#include "k5-platform.h" + +#include "ccapi_ccache.h" +#include "ccapi_ccache_iterator.h" +#include "ccapi_string.h" +#include "ccapi_ipc.h" +#include "ccapi_context_change_time.h" +#include "ccapi_err.h" + +#include <CredentialsCache2.h> + +typedef struct cci_context_d { +    cc_context_f *functions; +#if TARGET_OS_MAC +    cc_context_f *vector_functions; +#endif +    cci_identifier_t identifier; +    cc_uint32 synchronized; +    cc_time_t last_wait_for_change_time; +} *cci_context_t; + +/* ------------------------------------------------------------------------ */ + +struct cci_context_d cci_context_initializer = { +    NULL +    VECTOR_FUNCTIONS_INITIALIZER, +    NULL, +    0, +    0 +}; + +cc_context_f cci_context_f_initializer = { +    ccapi_context_release, +    ccapi_context_get_change_time, +    ccapi_context_get_default_ccache_name, +    ccapi_context_open_ccache, +    ccapi_context_open_default_ccache, +    ccapi_context_create_ccache, +    ccapi_context_create_default_ccache, +    ccapi_context_create_new_ccache, +    ccapi_context_new_ccache_iterator, +    ccapi_context_lock, +    ccapi_context_unlock, +    ccapi_context_compare, +    ccapi_context_wait_for_change +}; + +static cc_int32 cci_context_sync (cci_context_t in_context, +                                  cc_uint32     in_launch); + +#ifdef TARGET_OS_MAC +#pragma mark - +#endif + +MAKE_INIT_FUNCTION(cci_process_init); +MAKE_FINI_FUNCTION(cci_process_fini); + +/* ------------------------------------------------------------------------ */ + +static int cci_process_init (void) +{ +    cc_int32 err = ccNoError; + +    if (!err) { +        err = cci_context_change_time_thread_init (); +    } + +    if (!err) { +        err = cci_ipc_process_init (); +    } + +    if (!err) { +        add_error_table (&et_CAPI_error_table); +    } + +    return err; +} + +/* ------------------------------------------------------------------------ */ + +static void cci_process_fini (void) +{ +    if (!INITIALIZER_RAN (cci_process_init) || PROGRAM_EXITING ()) { +	return; +    } + +    remove_error_table(&et_CAPI_error_table); +    cci_context_change_time_thread_fini (); +} + + +#ifdef TARGET_OS_MAC +#pragma mark - +#endif + +/* ------------------------------------------------------------------------ */ + +cc_int32 cc_initialize (cc_context_t  *out_context, +                        cc_int32       in_version, +                        cc_int32      *out_supported_version, +                        char const   **out_vendor) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = NULL; +    static char *vendor_string = "MIT Kerberos CCAPI"; + +    if (!out_context) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = CALL_INIT_FUNCTION (cci_process_init); +    } + +    if (!err) { +        switch (in_version) { +            case ccapi_version_2: +            case ccapi_version_3: +            case ccapi_version_4: +            case ccapi_version_5: +            case ccapi_version_6: +            case ccapi_version_7: +                break; + +            default: +                err = ccErrBadAPIVersion; +                break; +        } +    } + +    if (!err) { +        context = malloc (sizeof (*context)); +        if (context) { +            *context = cci_context_initializer; +        } else { +            err = cci_check_error (ccErrNoMem); +        } +    } + +    if (!err) { +        context->functions = malloc (sizeof (*context->functions)); +        if (context->functions) { +            *context->functions = cci_context_f_initializer; +        } else { +            err = cci_check_error (ccErrNoMem); +        } +    } + +    if (!err) { +        context->identifier = cci_identifier_uninitialized; + +        *out_context = (cc_context_t) context; +        context = NULL; /* take ownership */ + +        if (out_supported_version) { +            *out_supported_version = ccapi_version_max; +        } + +        if (out_vendor) { +            *out_vendor = vendor_string; +        } +    } + +    ccapi_context_release ((cc_context_t) context); + +    return cci_check_error (err); +} + +#ifdef TARGET_OS_MAC +#pragma mark - +#endif + +/* ------------------------------------------------------------------------ */ +/* + * Currently does not need to talk to the server since the server must + * handle cleaning up resources from crashed clients anyway. + * + * NOTE: if server communication is ever added here, make sure that + * krb5_stdcc_shutdown calls an internal function which does not talk to the + * server.  krb5_stdcc_shutdown is called from thread fini functions and may + * crash talking to the server depending on what order the OS calls the fini + * functions (ie: if the ipc layer fini function is called first). + */ + +cc_int32 ccapi_context_release (cc_context_t in_context) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; + +    if (!in_context) { err = ccErrBadParam; } + +    if (!err) { +        cci_identifier_release (context->identifier); +        free (context->functions); +        free (context); +    } + +    return err; +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_get_change_time (cc_context_t  in_context, +                                        cc_time_t    *out_change_time) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream reply = NULL; + +    if (!in_context     ) { err = cci_check_error (ccErrBadParam); } +    if (!out_change_time) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = cci_context_sync (context, 0); +    } + +    if (!err) { +        err =  cci_ipc_send_no_launch (cci_context_get_change_time_msg_id, +                                       context->identifier, +                                       NULL, &reply); +    } + +    if (!err && krb5int_ipc_stream_size (reply) > 0) { +        cc_time_t change_time = 0; + +        /* got a response from the server */ +        err = krb5int_ipc_stream_read_time (reply, &change_time); + +        if (!err) { +            err = cci_context_change_time_update (context->identifier, +                                                  change_time); +        } +    } + +    if (!err) { +        err = cci_context_change_time_get (out_change_time); +    } + +    krb5int_ipc_stream_release (reply); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_wait_for_change (cc_context_t  in_context) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream request = NULL; +    k5_ipc_stream reply = NULL; + +    if (!in_context) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = krb5int_ipc_stream_new (&request); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_time (request, context->last_wait_for_change_time); +    } + +    if (!err) { +        err = cci_context_sync (context, 1); +    } + +    if (!err) { +        err = cci_ipc_send (cci_context_wait_for_change_msg_id, +			    context->identifier, +			    request, +			    &reply); +    } + +    if (!err) { +        err = krb5int_ipc_stream_read_time (reply, &context->last_wait_for_change_time); +    } + +    krb5int_ipc_stream_release (request); +    krb5int_ipc_stream_release (reply); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_get_default_ccache_name (cc_context_t  in_context, +                                                cc_string_t  *out_name) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream reply = NULL; +    char *reply_name = NULL; +    char *name = NULL; + +    if (!in_context) { err = cci_check_error (ccErrBadParam); } +    if (!out_name  ) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = cci_context_sync (context, 0); +    } + +    if (!err) { +        err =  cci_ipc_send_no_launch (cci_context_get_default_ccache_name_msg_id, +                                       context->identifier, +                                       NULL, +                                       &reply); +    } + +    if (!err) { +        if (krb5int_ipc_stream_size (reply) > 0) { +            /* got a response from the server */ +            err = krb5int_ipc_stream_read_string (reply, &reply_name); + +            if (!err) { +                name = reply_name; +            } +        } else { +            name = k_cci_context_initial_ccache_name; +        } +    } + +    if (!err) { +        err = cci_string_new (out_name, name); +    } + +    krb5int_ipc_stream_release (reply); +    krb5int_ipc_stream_free_string (reply_name); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_open_ccache (cc_context_t  in_context, +                                    const char   *in_name, +                                    cc_ccache_t  *out_ccache) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream request = NULL; +    k5_ipc_stream reply = NULL; +    cci_identifier_t identifier = NULL; + +    if (!in_context  ) { err = cci_check_error (ccErrBadParam); } +    if (!in_name     ) { err = cci_check_error (ccErrBadParam); } +    if (!out_ccache  ) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = krb5int_ipc_stream_new (&request); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_string (request, in_name); +    } + +    if (!err) { +        err = cci_context_sync (context, 0); +    } + +    if (!err) { +        err =  cci_ipc_send_no_launch (cci_context_open_ccache_msg_id, +                                       context->identifier, +                                       request, +                                       &reply); +    } + +    if (!err && !(krb5int_ipc_stream_size (reply) > 0)) { +        err = ccErrCCacheNotFound; +    } + +    if (!err) { +        err = cci_identifier_read (&identifier, reply); +    } + +    if (!err) { +        err = cci_ccache_new (out_ccache, identifier); +    } + +    cci_identifier_release (identifier); +    krb5int_ipc_stream_release (reply); +    krb5int_ipc_stream_release (request); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_open_default_ccache (cc_context_t  in_context, +                                            cc_ccache_t  *out_ccache) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream reply = NULL; +    cci_identifier_t identifier = NULL; + +    if (!in_context) { err = cci_check_error (ccErrBadParam); } +    if (!out_ccache) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = cci_context_sync (context, 0); +    } + +    if (!err) { +        err =  cci_ipc_send_no_launch (cci_context_open_default_ccache_msg_id, +                                       context->identifier, +                                       NULL, +                                       &reply); +    } + +    if (!err && !(krb5int_ipc_stream_size (reply) > 0)) { +        err = ccErrCCacheNotFound; +    } + +    if (!err) { +        err = cci_identifier_read (&identifier, reply); +    } + +    if (!err) { +        err = cci_ccache_new (out_ccache, identifier); +    } + +    cci_identifier_release (identifier); +    krb5int_ipc_stream_release (reply); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_create_ccache (cc_context_t  in_context, +                                      const char   *in_name, +                                      cc_uint32     in_cred_vers, +                                      const char   *in_principal, +                                      cc_ccache_t  *out_ccache) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream request = NULL; +    k5_ipc_stream reply = NULL; +    cci_identifier_t identifier = NULL; + +    if (!in_context  ) { err = cci_check_error (ccErrBadParam); } +    if (!in_name     ) { err = cci_check_error (ccErrBadParam); } +    if (!in_principal) { err = cci_check_error (ccErrBadParam); } +    if (!out_ccache  ) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = krb5int_ipc_stream_new (&request); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_string (request, in_name); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_uint32 (request, in_cred_vers); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_string (request, in_principal); +    } + +    if (!err) { +        err = cci_context_sync (context, 1); +    } + +    if (!err) { +        err =  cci_ipc_send (cci_context_create_ccache_msg_id, +                             context->identifier, +                             request, +                             &reply); +    } + +    if (!err) { +        err = cci_identifier_read (&identifier, reply); +    } + +    if (!err) { +        err = cci_ccache_new (out_ccache, identifier); +    } + +    cci_identifier_release (identifier); +    krb5int_ipc_stream_release (reply); +    krb5int_ipc_stream_release (request); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_create_default_ccache (cc_context_t  in_context, +                                              cc_uint32     in_cred_vers, +                                              const char   *in_principal, +                                              cc_ccache_t  *out_ccache) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream request = NULL; +    k5_ipc_stream reply = NULL; +    cci_identifier_t identifier = NULL; + +    if (!in_context  ) { err = cci_check_error (ccErrBadParam); } +    if (!in_principal) { err = cci_check_error (ccErrBadParam); } +    if (!out_ccache  ) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = krb5int_ipc_stream_new (&request); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_uint32 (request, in_cred_vers); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_string (request, in_principal); +    } + +    if (!err) { +        err = cci_context_sync (context, 1); +    } + +    if (!err) { +        err =  cci_ipc_send (cci_context_create_default_ccache_msg_id, +                             context->identifier, +                             request, +                             &reply); +    } + +    if (!err) { +        err = cci_identifier_read (&identifier, reply); +    } + +    if (!err) { +        err = cci_ccache_new (out_ccache, identifier); +    } + +    cci_identifier_release (identifier); +    krb5int_ipc_stream_release (reply); +    krb5int_ipc_stream_release (request); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_create_new_ccache (cc_context_t in_context, +                                          cc_uint32    in_cred_vers, +                                          const char  *in_principal, +                                          cc_ccache_t *out_ccache) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream request = NULL; +    k5_ipc_stream reply = NULL; +    cci_identifier_t identifier = NULL; + +    if (!in_context  ) { err = cci_check_error (ccErrBadParam); } +    if (!in_principal) { err = cci_check_error (ccErrBadParam); } +    if (!out_ccache  ) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = krb5int_ipc_stream_new (&request); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_uint32 (request, in_cred_vers); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_string (request, in_principal); +    } + +    if (!err) { +        err = cci_context_sync (context, 1); +    } + +    if (!err) { +        err =  cci_ipc_send (cci_context_create_new_ccache_msg_id, +                             context->identifier, +                             request, +                             &reply); +    } + +    if (!err) { +        err = cci_identifier_read (&identifier, reply); +    } + +    if (!err) { +        err = cci_ccache_new (out_ccache, identifier); +    } + +    cci_identifier_release (identifier); +    krb5int_ipc_stream_release (reply); +    krb5int_ipc_stream_release (request); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_new_ccache_iterator (cc_context_t          in_context, +                                            cc_ccache_iterator_t *out_iterator) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream reply = NULL; +    cci_identifier_t identifier = NULL; + +    if (!in_context  ) { err = cci_check_error (ccErrBadParam); } +    if (!out_iterator) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = cci_context_sync (context, 0); +    } + +    if (!err) { +        err =  cci_ipc_send_no_launch (cci_context_new_ccache_iterator_msg_id, +                                       context->identifier, +                                       NULL, +                                       &reply); +    } + +    if (!err) { +        if (krb5int_ipc_stream_size (reply) > 0) { +            err = cci_identifier_read (&identifier, reply); +        } else { +            identifier = cci_identifier_uninitialized; +        } +    } + +    if (!err) { +        err = cci_ccache_iterator_new (out_iterator, identifier); +    } + +    krb5int_ipc_stream_release (reply); +    cci_identifier_release (identifier); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_lock (cc_context_t in_context, +                             cc_uint32    in_lock_type, +                             cc_uint32    in_block) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream request = NULL; + +    if (!in_context) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = krb5int_ipc_stream_new (&request); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_uint32 (request, in_lock_type); +    } + +    if (!err) { +        err = krb5int_ipc_stream_write_uint32 (request, in_block); +    } + +    if (!err) { +        err = cci_context_sync (context, 1); +    } + +    if (!err) { +        err =  cci_ipc_send (cci_context_lock_msg_id, +                             context->identifier, +                             request, +                             NULL); +    } + +    krb5int_ipc_stream_release (request); + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_unlock (cc_context_t in_context) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; + +    if (!in_context) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = cci_context_sync (context, 1); +    } + +    if (!err) { +        err =  cci_ipc_send (cci_context_unlock_msg_id, +                             context->identifier, +                             NULL, +                             NULL); +    } + +    return cci_check_error (err); +} + +/* ------------------------------------------------------------------------ */ + +cc_int32 ccapi_context_compare (cc_context_t  in_context, +                                cc_context_t  in_compare_to_context, +                                cc_uint32    *out_equal) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    cci_context_t compare_to_context = (cci_context_t) in_compare_to_context; + +    if (!in_context           ) { err = cci_check_error (ccErrBadParam); } +    if (!in_compare_to_context) { err = cci_check_error (ccErrBadParam); } +    if (!out_equal            ) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        err = cci_context_sync (context, 0); +    } + +    if (!err) { +        err = cci_context_sync (compare_to_context, 0); +    } + +    if (!err) { +        /* If both contexts can't talk to the server, then +         * we assume they are equivalent */ +        err = cci_identifier_compare (context->identifier, +                                      compare_to_context->identifier, +                                      out_equal); +    } + +    return cci_check_error (err); +} + +#ifdef TARGET_OS_MAC +#pragma mark - +#endif + +/* ------------------------------------------------------------------------ */ + +static cc_int32 cci_context_sync (cci_context_t in_context, +                                  cc_uint32     in_launch) +{ +    cc_int32 err = ccNoError; +    cci_context_t context = (cci_context_t) in_context; +    k5_ipc_stream reply = NULL; +    cci_identifier_t new_identifier = NULL; + +    if (!in_context) { err = cci_check_error (ccErrBadParam); } + +    if (!err) { +        /* Use the uninitialized identifier because we may be talking  */ +        /* to a different server which would reject our identifier and */ +        /* the point of this message is to sync with the server's id   */ +        if (in_launch) { +            err =  cci_ipc_send (cci_context_sync_msg_id, +                                 cci_identifier_uninitialized, +                                 NULL, +                                 &reply); +        } else { +            err =  cci_ipc_send_no_launch (cci_context_sync_msg_id, +                                           cci_identifier_uninitialized, +                                           NULL, +                                           &reply); +        } +    } + +    if (!err) { +        if (krb5int_ipc_stream_size (reply) > 0) { +            err = cci_identifier_read (&new_identifier, reply); +        } else { +            new_identifier = cci_identifier_uninitialized; +        } +    } + +    if (!err) { +        cc_uint32 equal = 0; + +        err = cci_identifier_compare (context->identifier, new_identifier, &equal); + +        if (!err && !equal) { +            if (context->identifier) { +                cci_identifier_release (context->identifier); +            } +            context->identifier = new_identifier; +            new_identifier = NULL;  /* take ownership */ +        } +    } + +    if (!err && context->synchronized) { +        err = cci_context_change_time_sync (context->identifier); +    } + +    if (!err && !context->synchronized) { +        /* Keep state about whether this is the first call to avoid always   */ +        /* modifying the global change time on the context's first ipc call. */ +        context->synchronized = 1; +    } + +    cci_identifier_release (new_identifier); +    krb5int_ipc_stream_release (reply); + +    return cci_check_error (err); +} | 
