1 #include "mech_locl.h" 2 #include "heim_threads.h" 3 4 struct mg_thread_ctx { 5 gss_OID mech; 6 OM_uint32 maj_stat; 7 OM_uint32 min_stat; 8 gss_buffer_desc maj_error; 9 gss_buffer_desc min_error; 10 }; 11 12 static HEIMDAL_MUTEX context_mutex = HEIMDAL_MUTEX_INITIALIZER; 13 static int created_key; 14 static HEIMDAL_thread_key context_key; 15 16 17 static void 18 destroy_context(void *ptr) 19 { 20 struct mg_thread_ctx *mg = ptr; 21 OM_uint32 junk; 22 23 if (mg == NULL) 24 return; 25 26 gss_release_buffer(&junk, &mg->maj_error); 27 gss_release_buffer(&junk, &mg->min_error); 28 free(mg); 29 } 30 31 32 static struct mg_thread_ctx * 33 _gss_mechglue_thread(void) 34 { 35 struct mg_thread_ctx *ctx; 36 int ret = 0; 37 38 HEIMDAL_MUTEX_lock(&context_mutex); 39 40 if (!created_key) { 41 HEIMDAL_key_create(&context_key, destroy_context, ret); 42 if (ret) { 43 HEIMDAL_MUTEX_unlock(&context_mutex); 44 return NULL; 45 } 46 created_key = 1; 47 } 48 HEIMDAL_MUTEX_unlock(&context_mutex); 49 50 ctx = HEIMDAL_getspecific(context_key); 51 if (ctx == NULL) { 52 53 ctx = calloc(1, sizeof(*ctx)); 54 if (ctx == NULL) 55 return NULL; 56 HEIMDAL_setspecific(context_key, ctx, ret); 57 if (ret) { 58 free(ctx); 59 return NULL; 60 } 61 } 62 return ctx; 63 } 64 65 OM_uint32 66 _gss_mg_get_error(const gss_OID mech, OM_uint32 type, 67 OM_uint32 value, gss_buffer_t string) 68 { 69 struct mg_thread_ctx *mg; 70 71 mg = _gss_mechglue_thread(); 72 if (mg == NULL) 73 return GSS_S_BAD_STATUS; 74 75 #if 0 76 /* 77 * We cant check the mech here since a pseudo-mech might have 78 * called an lower layer and then the mech info is all broken 79 */ 80 if (mech != NULL && gss_oid_equal(mg->mech, mech) == 0) 81 return GSS_S_BAD_STATUS; 82 #endif 83 84 switch (type) { 85 case GSS_C_GSS_CODE: { 86 if (value != mg->maj_stat || mg->maj_error.length == 0) 87 break; 88 string->value = malloc(mg->maj_error.length + 1); 89 string->length = mg->maj_error.length; 90 memcpy(string->value, mg->maj_error.value, mg->maj_error.length); 91 ((char *) string->value)[string->length] = '\0'; 92 return GSS_S_COMPLETE; 93 } 94 case GSS_C_MECH_CODE: { 95 if (value != mg->min_stat || mg->min_error.length == 0) 96 break; 97 string->value = malloc(mg->min_error.length + 1); 98 string->length = mg->min_error.length; 99 memcpy(string->value, mg->min_error.value, mg->min_error.length); 100 ((char *) string->value)[string->length] = '\0'; 101 return GSS_S_COMPLETE; 102 } 103 } 104 string->value = NULL; 105 string->length = 0; 106 return GSS_S_BAD_STATUS; 107 } 108 109 void 110 _gss_mg_error(gssapi_mech_interface m, OM_uint32 maj, OM_uint32 min) 111 { 112 OM_uint32 major_status, minor_status; 113 OM_uint32 message_content; 114 struct mg_thread_ctx *mg; 115 116 /* 117 * Mechs without gss_display_status() does 118 * gss_mg_collect_error() by themself. 119 */ 120 if (m->gm_display_status == NULL) 121 return ; 122 123 mg = _gss_mechglue_thread(); 124 if (mg == NULL) 125 return; 126 127 gss_release_buffer(&minor_status, &mg->maj_error); 128 gss_release_buffer(&minor_status, &mg->min_error); 129 130 mg->mech = &m->gm_mech_oid; 131 mg->maj_stat = maj; 132 mg->min_stat = min; 133 134 major_status = m->gm_display_status(&minor_status, 135 maj, 136 GSS_C_GSS_CODE, 137 &m->gm_mech_oid, 138 &message_content, 139 &mg->maj_error); 140 if (GSS_ERROR(major_status)) { 141 mg->maj_error.value = NULL; 142 mg->maj_error.length = 0; 143 } 144 major_status = m->gm_display_status(&minor_status, 145 min, 146 GSS_C_MECH_CODE, 147 &m->gm_mech_oid, 148 &message_content, 149 &mg->min_error); 150 if (GSS_ERROR(major_status)) { 151 mg->min_error.value = NULL; 152 mg->min_error.length = 0; 153 } 154 } 155 156 void 157 gss_mg_collect_error(gss_OID mech, OM_uint32 maj, OM_uint32 min) 158 { 159 gssapi_mech_interface m = __gss_get_mechanism(mech); 160 if (m == NULL) 161 return; 162 _gss_mg_error(m, maj, min); 163 } 164