SystemConfiguration.fproj/SCDGet.c

   1 /*
   2  * Copyright (c) 2000-2005, 2009-2011, 2013, 2016 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /*
  25  * Modification History
  26  *
  27  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  28  * - public API conversion
  29  *
  30  * March 24, 2000               Allan Nathanson <ajn@apple.com>
  31  * - initial revision
  32  */
  33
  34 #include "SCDynamicStoreInternal.h"
  35 #include "config.h"             /* MiG generated file */
  36
  37
  38 CFDictionaryRef
  39 SCDynamicStoreCopyMultiple(SCDynamicStoreRef    store,
  40                            CFArrayRef           keys,
  41                            CFArrayRef           patterns)
  42 {
  43         SCDynamicStorePrivateRef        storePrivate;
  44         kern_return_t                   status;
  45         CFDataRef                       xmlKeys         = NULL; /* keys (XML serialized) */
  46         xmlData_t                       myKeysRef       = NULL; /* keys (serialized) */
  47         CFIndex                         myKeysLen       = 0;
  48         CFDataRef                       xmlPatterns     = NULL; /* patterns (XML serialized) */
  49         xmlData_t                       myPatternsRef   = NULL; /* patterns (serialized) */
  50         CFIndex                         myPatternsLen   = 0;
  51         xmlDataOut_t                    xmlDictRef      = NULL; /* dict (serialized) */
  52         mach_msg_type_number_t          xmlDictLen      = 0;
  53         CFDictionaryRef                 dict            = NULL; /* dict (un-serialized) */
  54         CFDictionaryRef                 expDict         = NULL; /* dict (un-serialized / expanded) */
  55         int                             sc_status;
  56
  57         if (store == NULL) {
  58                 store = __SCDynamicStoreNullSession();
  59                 if (store == NULL) {
  60                         /* sorry, you must provide a session */
  61                         _SCErrorSet(kSCStatusNoStoreSession);
  62                         return NULL;
  63                 }
  64         }
  65
  66         storePrivate = (SCDynamicStorePrivateRef)store;
  67         if (storePrivate->server == MACH_PORT_NULL) {
  68                 _SCErrorSet(kSCStatusNoStoreServer);
  69                 return NULL;    /* you must have an open session to play */
  70         }
  71
  72         /* serialize the keys */
  73         if (keys != NULL) {
  74                 if (!_SCSerialize(keys, &xmlKeys, (void **)&myKeysRef, &myKeysLen)) {
  75                         _SCErrorSet(kSCStatusFailed);
  76                         return NULL;
  77                 }
  78         }
  79
  80         /* serialize the patterns */
  81         if (patterns != NULL) {
  82                 if (!_SCSerialize(patterns, &xmlPatterns, (void **)&myPatternsRef, &myPatternsLen)) {
  83                         if (xmlKeys != NULL) CFRelease(xmlKeys);
  84                         _SCErrorSet(kSCStatusFailed);
  85                         return NULL;
  86                 }
  87         }
  88
  89         os_activity_scope(storePrivate->activity);
  90
  91     retry :
  92
  93         /* send the keys and patterns, fetch the associated result from the server */
  94         status = configget_m(storePrivate->server,
  95                              myKeysRef,
  96                              (mach_msg_type_number_t)myKeysLen,
  97                              myPatternsRef,
  98                              (mach_msg_type_number_t)myPatternsLen,
  99                              &xmlDictRef,
 100                              &xmlDictLen,
 101                              (int *)&sc_status);
 102
 103         if (__SCDynamicStoreCheckRetryAndHandleError(store,
 104                                                      status,
 105                                                      &sc_status,
 106                                                      "SCDynamicStoreCopyMultiple configget_m()")) {
 107                 goto retry;
 108         }
 109
 110         /* clean up */
 111         if (xmlKeys != NULL)            CFRelease(xmlKeys);
 112         if (xmlPatterns != NULL)        CFRelease(xmlPatterns);
 113
 114         if (sc_status != kSCStatusOK) {
 115                 if (xmlDictRef != NULL) {
 116                         (void) vm_deallocate(mach_task_self(), (vm_address_t)xmlDictRef, xmlDictLen);
 117                 }
 118                 _SCErrorSet(sc_status);
 119                 return NULL;
 120         }
 121
 122         /* un-serialize the dictionary */
 123         if (!_SCUnserialize((CFPropertyListRef *)&dict, NULL, xmlDictRef, xmlDictLen)) {
 124                 _SCErrorSet(kSCStatusFailed);
 125                 return NULL;
 126         }
 127
 128         expDict = _SCUnserializeMultiple(dict);
 129         CFRelease(dict);
 130
 131         return expDict;
 132 }
 133
 134
 135 CFPropertyListRef
 136 SCDynamicStoreCopyValue(SCDynamicStoreRef store, CFStringRef key)
 137 {
 138         SCDynamicStorePrivateRef        storePrivate;
 139         kern_return_t                   status;
 140         CFDataRef                       utfKey;                 /* key (XML serialized) */
 141         xmlData_t                       myKeyRef;               /* key (serialized) */
 142         CFIndex                         myKeyLen;
 143         xmlDataOut_t                    xmlDataRef      = NULL; /* data (serialized) */
 144         mach_msg_type_number_t          xmlDataLen      = 0;
 145         CFPropertyListRef               data;                   /* data (un-serialized) */
 146         int                             newInstance;
 147         int                             sc_status;
 148
 149         if (store == NULL) {
 150                 store = __SCDynamicStoreNullSession();
 151                 if (store == NULL) {
 152                         /* sorry, you must provide a session */
 153                         _SCErrorSet(kSCStatusNoStoreSession);
 154                         return NULL;
 155                 }
 156         }
 157
 158         storePrivate = (SCDynamicStorePrivateRef)store;
 159         if (storePrivate->server == MACH_PORT_NULL) {
 160                 _SCErrorSet(kSCStatusNoStoreServer);
 161                 return NULL;    /* you must have an open session to play */
 162         }
 163
 164         /* serialize the key */
 165         if (!_SCSerializeString(key, &utfKey, (void **)&myKeyRef, &myKeyLen)) {
 166                 _SCErrorSet(kSCStatusFailed);
 167                 return NULL;
 168         }
 169
 170         os_activity_scope(storePrivate->activity);
 171
 172     retry :
 173
 174         /* send the key & fetch the associated data from the server */
 175         status = configget(storePrivate->server,
 176                            myKeyRef,
 177                            (mach_msg_type_number_t)myKeyLen,
 178                            &xmlDataRef,
 179                            &xmlDataLen,
 180                            &newInstance,
 181                            (int *)&sc_status);
 182
 183         if (__SCDynamicStoreCheckRetryAndHandleError(store,
 184                                                      status,
 185                                                      &sc_status,
 186                                                      "SCDynamicStoreCopyValue configget()")) {
 187                 goto retry;
 188         }
 189
 190         /* clean up */
 191         CFRelease(utfKey);
 192
 193         if (sc_status != kSCStatusOK) {
 194                 if (xmlDataRef != NULL) {
 195                         (void) vm_deallocate(mach_task_self(), (vm_address_t)xmlDataRef, xmlDataLen);
 196                 }
 197                 _SCErrorSet(sc_status);
 198                 return NULL;
 199         }
 200
 201         /* un-serialize the data */
 202         if (!_SCUnserialize(&data, NULL, xmlDataRef, xmlDataLen)) {
 203                 _SCErrorSet(kSCStatusFailed);
 204                 return NULL;
 205         }
 206
 207         return data;
 208 }