configd.tproj/_configlist.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, 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 "configd.h"
  35 #include "session.h"
  36 #include "pattern.h"
  37
  38 #define N_QUICK 64
  39
  40 __private_extern__
  41 int
  42 __SCDynamicStoreCopyKeyList(SCDynamicStoreRef store, CFStringRef key, Boolean isRegex, CFArrayRef *subKeys)
  43 {
  44         SCDynamicStorePrivateRef        storePrivate    = (SCDynamicStorePrivateRef)store;
  45         CFMutableArrayRef               keyArray;
  46         regex_t                         preg;
  47         CFIndex                         storeCnt;
  48         CFStringRef                     storeStr;
  49         CFDictionaryRef                 storeValue;
  50
  51         if (_configd_verbose) {
  52                 SCLog(TRUE, LOG_DEBUG, CFSTR("__SCDynamicStoreCopyKeyList:"));
  53                 SCLog(TRUE, LOG_DEBUG, CFSTR("  key     = %@"), key);
  54                 SCLog(TRUE, LOG_DEBUG, CFSTR("  isRegex = %s"), isRegex ? "TRUE" : "FALSE");
  55         }
  56
  57         if (!store || (storePrivate->server == MACH_PORT_NULL)) {
  58                 return kSCStatusNoStoreSession; /* you must have an open session to play */
  59         }
  60
  61         storeCnt = CFDictionaryGetCount(storeData);
  62         keyArray = CFArrayCreateMutable(NULL, storeCnt, &kCFTypeArrayCallBacks);
  63
  64         if (isRegex) {
  65                 CFStringRef     reErrStr;
  66
  67                 if (!patternCompile(key, &preg, &reErrStr)) {
  68                         CFArrayAppendValue(keyArray, reErrStr);
  69                         CFRelease(reErrStr);
  70                         *subKeys = CFArrayCreateCopy(NULL, keyArray);
  71                         CFRelease(keyArray);
  72                         return kSCStatusFailed;
  73                 }
  74         }
  75
  76         if (storeCnt > 0) {
  77                 int             i;
  78                 const void *    storeKeys_q[N_QUICK];
  79                 const void **   storeKeys       = storeKeys_q;
  80                 const void *    storeValues_q[N_QUICK];
  81                 const void **   storeValues     = storeValues_q;
  82
  83                 if (storeCnt > (CFIndex)(sizeof(storeKeys_q) / sizeof(CFStringRef))) {
  84                         storeKeys   = CFAllocatorAllocate(NULL, storeCnt * sizeof(CFStringRef), 0);
  85                         storeValues = CFAllocatorAllocate(NULL, storeCnt * sizeof(CFStringRef), 0);
  86                 }
  87
  88                 CFDictionaryGetKeysAndValues(storeData, storeKeys, storeValues);
  89                 for (i = 0; i < storeCnt; i++) {
  90                         storeStr   = (CFStringRef)storeKeys[i];
  91                         storeValue = (CFDictionaryRef)storeValues[i];
  92                         if (isRegex) {
  93                                 /*
  94                                  * only return those keys which match the regular
  95                                  * expression specified in the provided key.
  96                                  */
  97
  98                                 int     reError;
  99                                 char    storeKey_q[256];
 100                                 char *  storeKey        = storeKey_q;
 101                                 CFIndex storeKeyLen     = CFStringGetLength(storeStr) + 1;
 102
 103                                 if (storeKeyLen > (CFIndex)sizeof(storeKey_q))
 104                                         storeKey = CFAllocatorAllocate(NULL, storeKeyLen, 0);
 105                                 if (_SC_cfstring_to_cstring(storeStr, storeKey, storeKeyLen, kCFStringEncodingASCII) == NULL) {
 106                                         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("could not convert store key to C string"));
 107                                         if (storeKey != storeKey_q) CFAllocatorDeallocate(NULL, storeKey);
 108                                         continue;
 109                                 }
 110
 111                                 reError = regexec(&preg, storeKey, 0, NULL, 0);
 112                                 switch (reError) {
 113                                         case 0 :
 114                                                 /* we've got a match */
 115                                                 if (CFDictionaryContainsKey(storeValue, kSCDData))
 116                                                         CFArrayAppendValue(keyArray, storeStr);
 117                                                 break;
 118                                         case REG_NOMATCH :
 119                                                 /* no match */
 120                                                 break;
 121                                         default : {
 122                                                 char    reErrBuf[256];
 123                                                 int     reErrStrLen;
 124
 125                                                 reErrStrLen = regerror(reError,
 126                                                                        &preg,
 127                                                                        reErrBuf,
 128                                                                        sizeof(reErrBuf));
 129                                                 SCLog(_configd_verbose, LOG_DEBUG, CFSTR("regexec(): %s"), reErrBuf);
 130                                                 break;
 131                                         }
 132                                 }
 133                                 if (storeKey != storeKey_q) CFAllocatorDeallocate(NULL, storeKey);
 134                         } else {
 135                                 /*
 136                                  * only return those keys which are prefixed by the
 137                                  * provided key string and have data.
 138                                  */
 139                                 if (((CFStringGetLength(key) == 0) || CFStringHasPrefix(storeStr, key)) &&
 140                                     CFDictionaryContainsKey(storeValue, kSCDData)) {
 141                                         CFArrayAppendValue(keyArray, storeStr);
 142                                 }
 143                         }
 144                 }
 145
 146                 if (storeKeys != storeKeys_q) {
 147                         CFAllocatorDeallocate(NULL, storeKeys);
 148                         CFAllocatorDeallocate(NULL, storeValues);
 149                 }
 150         }
 151
 152         if (isRegex) {
 153                 regfree(&preg);
 154         }
 155
 156         *subKeys = keyArray;
 157
 158         return kSCStatusOK;
 159 }
 160
 161
 162 __private_extern__
 163 kern_return_t
 164 _configlist(mach_port_t                 server,
 165             xmlData_t                   keyRef,         /* raw XML bytes */
 166             mach_msg_type_number_t      keyLen,
 167             int                         isRegex,
 168             xmlDataOut_t                *listRef,       /* raw XML bytes */
 169             mach_msg_type_number_t      *listLen,
 170             int                         *sc_status
 171 )
 172 {
 173         CFStringRef             key;            /* key  (un-serialized) */
 174         serverSessionRef        mySession = getSession(server);
 175         Boolean                 ok;
 176         CFArrayRef              subKeys;        /* array of CFStringRef's */
 177
 178         if (_configd_verbose) {
 179                 SCLog(TRUE, LOG_DEBUG, CFSTR("List keys in configuration database."));
 180                 SCLog(TRUE, LOG_DEBUG, CFSTR("  server = %d"), server);
 181         }
 182
 183         *listRef = NULL;
 184         *listLen = 0;
 185
 186         /* un-serialize the key */
 187         if (!_SCUnserializeString(&key, NULL, (void *)keyRef, keyLen)) {
 188                 *sc_status = kSCStatusFailed;
 189                 return KERN_SUCCESS;
 190         }
 191
 192         if (!isA_CFString(key)) {
 193                 *sc_status = kSCStatusInvalidArgument;
 194                 CFRelease(key);
 195                 return KERN_SUCCESS;
 196         }
 197
 198         if (!mySession) {
 199                 *sc_status = kSCStatusNoStoreSession;   /* you must have an open session to play */
 200                 CFRelease(key);
 201                 return KERN_SUCCESS;
 202         }
 203
 204         *sc_status = __SCDynamicStoreCopyKeyList(mySession->store, key, isRegex != 0, &subKeys);
 205         CFRelease(key);
 206         if (*sc_status != kSCStatusOK) {
 207                 return KERN_SUCCESS;
 208         }
 209
 210         /* serialize the list of keys */
 211         ok = _SCSerialize(subKeys, NULL, (void **)listRef, (CFIndex *)listLen);
 212         CFRelease(subKeys);
 213         if (!ok) {
 214                 *sc_status = kSCStatusFailed;
 215                 return KERN_SUCCESS;
 216         }
 217
 218         return KERN_SUCCESS;
 219 }