1 /* 2 * lib/krb5/ccache/ccdefault.c 3 * 4 * Copyright 1990 by the Massachusetts Institute of Technology. 5 * All Rights Reserved. 6 * 7 * Export of this software from the United States of America may 8 * require a specific license from the United States Government. 9 * It is the responsibility of any person or organization contemplating 10 * export to obtain such a license before exporting. 11 * 12 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 13 * distribute this software and its documentation for any purpose and 14 * without fee is hereby granted, provided that the above copyright 15 * notice appear in all copies and that both that copyright notice and 16 * this permission notice appear in supporting documentation, and that 17 * the name of M.I.T. not be used in advertising or publicity pertaining 18 * to distribution of the software without specific, written prior 19 * permission. Furthermore if you modify this software you must label 20 * your software as modified software and not distribute it in such a 21 * fashion that it might be confused with the original M.I.T. software. 22 * M.I.T. makes no representations about the suitability of 23 * this software for any purpose. It is provided "as is" without express 24 * or implied warranty. 25 * 26 * 27 * Find default credential cache 28 */ 29 30 #include "k5-int.h" 31 32 #if defined(USE_LOGIN_LIBRARY) 33 #include "KerberosLoginPrivate.h" 34 #elif defined(USE_LEASH) 35 static void (*pLeash_AcquireInitialTicketsIfNeeded)(krb5_context,krb5_principal,char*,int) = NULL; 36 static HANDLE hLeashDLL = INVALID_HANDLE_VALUE; 37 #ifdef _WIN64 38 #define LEASH_DLL "leashw64.dll" 39 #else 40 #define LEASH_DLL "leashw32.dll" 41 #endif 42 #endif 43 44 45 krb5_error_code KRB5_CALLCONV 46 krb5_cc_default(krb5_context context, krb5_ccache *ccache) 47 { 48 krb5_os_context os_ctx; 49 50 if (!context || context->magic != KV5M_CONTEXT) 51 return KV5M_CONTEXT; 52 53 os_ctx = context->os_context; 54 55 return krb5_cc_resolve(context, krb5_cc_default_name(context), ccache); 56 } 57 58 /* This is the internal function which opens the default ccache. On platforms supporting 59 the login library's automatic popup dialog to get tickets, this function also updated the 60 library's internal view of the current principal associated with this cache. 61 62 All krb5 and GSS functions which need to open a cache to get a tgt to obtain service tickets 63 should call this function, not krb5_cc_default() */ 64 65 krb5_error_code KRB5_CALLCONV 66 krb5int_cc_default(krb5_context context, krb5_ccache *ccache) 67 { 68 if (!context || context->magic != KV5M_CONTEXT) { 69 return KV5M_CONTEXT; 70 } 71 72 #ifdef USE_LOGIN_LIBRARY 73 { 74 /* make sure the default cache has tix before you open it */ 75 KLStatus err = klNoErr; 76 char *outCacheName = NULL; 77 78 /* Try to make sure a krb5 tgt is in the cache */ 79 err = __KLInternalAcquireInitialTicketsForCache (krb5_cc_default_name (context), kerberosVersion_V5, 80 NULL, NULL, &outCacheName); 81 if (err == klNoErr) { 82 /* This function tries to get tickets and put them in the specified 83 cache, however, if the cache does not exist, it may choose to put 84 them elsewhere (ie: the system default) so we set that here */ 85 if (strcmp (krb5_cc_default_name (context), outCacheName) != 0) { 86 krb5_cc_set_default_name (context, outCacheName); 87 } 88 KLDisposeString (outCacheName); 89 } 90 } 91 #else 92 #ifdef USE_LEASH 93 if ( hLeashDLL == INVALID_HANDLE_VALUE ) { 94 hLeashDLL = LoadLibrary(LEASH_DLL); 95 if ( hLeashDLL != INVALID_HANDLE_VALUE ) { 96 (FARPROC) pLeash_AcquireInitialTicketsIfNeeded = 97 GetProcAddress(hLeashDLL, "not_an_API_Leash_AcquireInitialTicketsIfNeeded"); 98 } 99 } 100 101 if ( pLeash_AcquireInitialTicketsIfNeeded ) { 102 char ccname[256]=""; 103 pLeash_AcquireInitialTicketsIfNeeded(context, NULL, ccname, sizeof(ccname)); 104 if (ccname[0]) { 105 if (strcmp (krb5_cc_default_name (context),ccname) != 0) { 106 krb5_cc_set_default_name (context, ccname); 107 } 108 } 109 } 110 #endif 111 #endif 112 113 return krb5_cc_default (context, ccache); 114 } 115