SystemConfiguration.fproj/SCDGet.c

   1 /*
   2  * Copyright (c) 2000-2005, 2009 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 <mach/mach.h>
  35 #include <mach/mach_error.h>
  36
  37 #include <SystemConfiguration/SystemConfiguration.h>
  38 #include <SystemConfiguration/SCPrivate.h>
  39 #include "SCDynamicStoreInternal.h"
  40 #include "config.h"             /* MiG generated file */
  41
  42
  43 CFDictionaryRef
  44 SCDynamicStoreCopyMultiple(SCDynamicStoreRef    store,
  45                            CFArrayRef           keys,
  46                            CFArrayRef           patterns)
  47 {
  48         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  49         kern_return_t                   status;
  50         CFDataRef                       xmlKeys         = NULL; /* keys (XML serialized) */
  51         xmlData_t                       myKeysRef       = NULL; /* keys (serialized) */
  52         CFIndex                         myKeysLen       = 0;
  53         CFDataRef                       xmlPatterns     = NULL; /* patterns (XML serialized) */
  54         xmlData_t                       myPatternsRef   = NULL; /* patterns (serialized) */
  55         CFIndex                         myPatternsLen   = 0;
  56         xmlDataOut_t                    xmlDictRef;             /* dict (serialized) */
  57         mach_msg_type_number_t          xmlDictLen;
  58         CFDictionaryRef                 dict            = NULL; /* dict (un-serialized) */
  59         CFDictionaryRef                 expDict         = NULL; /* dict (un-serialized / expanded) */
  60         int                             sc_status;
  61
  62         if (store == NULL) {
  63                 /* sorry, you must provide a session */
  64                 _SCErrorSet(kSCStatusNoStoreSession);
  65                 return NULL;
  66         }
  67
  68         if (storePrivate->server == MACH_PORT_NULL) {
  69                 _SCErrorSet(kSCStatusNoStoreServer);
  70                 return NULL;    /* you must have an open session to play */
  71         }
  72
  73         /* serialize the keys */
  74         if (keys) {
  75                 if (!_SCSerialize(keys, &xmlKeys, (void **)&myKeysRef, &myKeysLen)) {
  76                         _SCErrorSet(kSCStatusFailed);
  77                         return NULL;
  78                 }
  79         }
  80
  81         /* serialize the patterns */
  82         if (patterns) {
  83                 if (!_SCSerialize(patterns, &xmlPatterns, (void **)&myPatternsRef, &myPatternsLen)) {
  84                         CFRelease(xmlKeys);
  85                         _SCErrorSet(kSCStatusFailed);
  86                         return NULL;
  87                 }
  88         }
  89
  90         /* send the keys and patterns, fetch the associated result from the server */
  91         status = configget_m(storePrivate->server,
  92                              myKeysRef,
  93                              myKeysLen,
  94                              myPatternsRef,
  95                              myPatternsLen,
  96                              &xmlDictRef,
  97                              &xmlDictLen,
  98                              (int *)&sc_status);
  99
 100         /* clean up */
 101         if (xmlKeys)            CFRelease(xmlKeys);
 102         if (xmlPatterns)        CFRelease(xmlPatterns);
 103
 104         if (status != KERN_SUCCESS) {
 105                 if (status == MACH_SEND_INVALID_DEST) {
 106                         /* the server's gone and our session port's dead, remove the dead name right */
 107                         (void) mach_port_deallocate(mach_task_self(), storePrivate->server);
 108                 } else {
 109                         /* we got an unexpected error, leave the [session] port alone */
 110                         SCLog(TRUE, LOG_ERR, CFSTR("SCDynamicStoreCopyMultiple configget_m(): %s"), mach_error_string(status));
 111                 }
 112                 storePrivate->server = MACH_PORT_NULL;
 113                 _SCErrorSet(status);
 114                 return NULL;
 115         }
 116
 117         if (sc_status != kSCStatusOK) {
 118                 (void) vm_deallocate(mach_task_self(), (vm_address_t)xmlDictRef, xmlDictLen);
 119                 _SCErrorSet(sc_status);
 120                 return NULL;
 121         }
 122
 123         /* un-serialize the dictionary */
 124         if (!_SCUnserialize((CFPropertyListRef *)&dict, NULL, xmlDictRef, xmlDictLen)) {
 125                 _SCErrorSet(kSCStatusFailed);
 126                 return NULL;
 127         }
 128
 129         expDict = _SCUnserializeMultiple(dict);
 130         CFRelease(dict);
 131
 132         return expDict;
 133 }
 134
 135
 136 CFPropertyListRef
 137 SCDynamicStoreCopyValue(SCDynamicStoreRef store, CFStringRef key)
 138 {
 139         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
 140         kern_return_t                   status;
 141         CFDataRef                       utfKey;         /* key (XML serialized) */
 142         xmlData_t                       myKeyRef;       /* key (serialized) */
 143         CFIndex                         myKeyLen;
 144         xmlDataOut_t                    xmlDataRef;     /* data (serialized) */
 145         mach_msg_type_number_t          xmlDataLen;
 146         CFPropertyListRef               data;           /* data (un-serialized) */
 147         int                             newInstance;
 148         int                             sc_status;
 149
 150         if (store == NULL) {
 151                 /* sorry, you must provide a session */
 152                 _SCErrorSet(kSCStatusNoStoreSession);
 153                 return NULL;
 154         }
 155
 156         if (storePrivate->server == MACH_PORT_NULL) {
 157                 _SCErrorSet(kSCStatusNoStoreServer);
 158                 return NULL;    /* you must have an open session to play */
 159         }
 160
 161         /* serialize the key */
 162         if (!_SCSerializeString(key, &utfKey, (void **)&myKeyRef, &myKeyLen)) {
 163                 _SCErrorSet(kSCStatusFailed);
 164                 return NULL;
 165         }
 166
 167         /* send the key & fetch the associated data from the server */
 168         status = configget(storePrivate->server,
 169                            myKeyRef,
 170                            myKeyLen,
 171                            &xmlDataRef,
 172                            &xmlDataLen,
 173                            &newInstance,
 174                            (int *)&sc_status);
 175
 176         /* clean up */
 177         CFRelease(utfKey);
 178
 179         if (status != KERN_SUCCESS) {
 180                 if (status == MACH_SEND_INVALID_DEST) {
 181                         /* the server's gone and our session port's dead, remove the dead name right */
 182                         (void) mach_port_deallocate(mach_task_self(), storePrivate->server);
 183                 } else {
 184                         /* we got an unexpected error, leave the [session] port alone */
 185                         SCLog(TRUE, LOG_ERR, CFSTR("SCDynamicStoreCopyValue configget(): %s"), mach_error_string(status));
 186                 }
 187                 storePrivate->server = MACH_PORT_NULL;
 188                 _SCErrorSet(status);
 189                 return NULL;
 190         }
 191
 192         if (sc_status != kSCStatusOK) {
 193                 (void) vm_deallocate(mach_task_self(), (vm_address_t)xmlDataRef, xmlDataLen);
 194                 _SCErrorSet(sc_status);
 195                 return NULL;
 196         }
 197
 198         /* un-serialize the data */
 199         if (!_SCUnserialize(&data, NULL, xmlDataRef, xmlDataLen)) {
 200                 _SCErrorSet(kSCStatusFailed);
 201                 return NULL;
 202         }
 203
 204         return data;
 205 }