configd.tproj/_configclose.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25
  26 /*
  27  * Modification History
  28  *
  29  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  30  * - public API conversion
  31  *
  32  * March 24, 2000               Allan Nathanson <ajn@apple.com>
  33  * - initial revision
  34  */
  35
  36 #include <unistd.h>
  37
  38 #include "configd.h"
  39 #include "session.h"
  40
  41 #define N_QUICK 16
  42
  43 static Boolean
  44 isMySessionKey(CFStringRef sessionKey, CFStringRef key)
  45 {
  46         CFDictionaryRef dict;
  47         CFStringRef     storeSessionKey;
  48
  49         dict = CFDictionaryGetValue(storeData, key);
  50         if (!dict) {
  51                 /* if key no longer exists */
  52                 return FALSE;
  53         }
  54
  55         storeSessionKey = CFDictionaryGetValue(dict, kSCDSession);
  56         if (!storeSessionKey) {
  57                 /* if this is not a session key */
  58                 return FALSE;
  59         }
  60
  61         if (!CFEqual(sessionKey, storeSessionKey)) {
  62                 /* if this is not "my" session key */
  63                 return FALSE;
  64         }
  65
  66         return TRUE;
  67 }
  68
  69
  70 static void
  71 removeAllKeys(SCDynamicStoreRef store, Boolean isRegex)
  72 {
  73         SCDynamicStorePrivateRef        storePrivate    = (SCDynamicStorePrivateRef)store;
  74         CFSetRef                        keys;
  75         CFIndex                         n;
  76
  77         keys = isRegex ? storePrivate->patterns : storePrivate->keys;
  78         n = CFSetGetCount(keys);
  79         if (n > 0) {
  80                 CFIndex         i;
  81                 CFArrayRef      keysToRemove;
  82                 const void *    watchedKeys_q[N_QUICK];
  83                 const void **   watchedKeys     = watchedKeys_q;
  84
  85                 if (n > (CFIndex)(sizeof(watchedKeys_q) / sizeof(CFStringRef)))
  86                         watchedKeys = CFAllocatorAllocate(NULL, n * sizeof(CFStringRef), 0);
  87                 CFSetGetValues(keys, watchedKeys);
  88                 keysToRemove = CFArrayCreate(NULL, watchedKeys, n, &kCFTypeArrayCallBacks);
  89                 if (watchedKeys != watchedKeys_q) CFAllocatorDeallocate(NULL, watchedKeys);
  90                 for (i = 0; i < n; i++) {
  91                         (void) __SCDynamicStoreRemoveWatchedKey(store,
  92                                                                 CFArrayGetValueAtIndex(keysToRemove, i),
  93                                                                 isRegex,
  94                                                                 TRUE);
  95                 }
  96                 CFRelease(keysToRemove);
  97         }
  98
  99         return;
 100 }
 101
 102
 103 __private_extern__
 104 int
 105 __SCDynamicStoreClose(SCDynamicStoreRef *store, Boolean internal)
 106 {
 107         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)*store;
 108         CFIndex                         keyCnt;
 109         CFStringRef                     sessionKey;
 110         CFDictionaryRef                 dict;
 111         CFArrayRef                      keys;
 112         serverSessionRef                mySession;
 113
 114         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("__SCDynamicStoreClose:"));
 115
 116         if ((*store == NULL) || (storePrivate->server == MACH_PORT_NULL)) {
 117                 return kSCStatusNoStoreSession; /* you must have an open session to play */
 118         }
 119
 120         if (_configd_trace) {
 121                 SCTrace(TRUE, _configd_trace,
 122                         CFSTR("%s : %5d\n"),
 123                         internal ? "*close " : "close  ",
 124                         storePrivate->server);
 125         }
 126
 127         /* Remove all notification keys and patterns */
 128         removeAllKeys(*store, FALSE);   // keys
 129         removeAllKeys(*store, TRUE);    // patterns
 130
 131         /* Remove/cancel any outstanding notification requests. */
 132         (void) __SCDynamicStoreNotifyCancel(*store);
 133
 134         /* Remove any session keys */
 135         sessionKey = CFStringCreateWithFormat(NULL, NULL, CFSTR("%d"), storePrivate->server);
 136         dict = CFDictionaryGetValue(sessionData, sessionKey);
 137         keys = CFDictionaryGetValue(dict, kSCDSessionKeys);
 138         if (keys && ((keyCnt = CFArrayGetCount(keys)) > 0)) {
 139                 Boolean wasLocked;
 140                 CFIndex i;
 141
 142                 /*
 143                  * if necessary, claim a lock to ensure that we inform
 144                  * any processes that a session key was removed.
 145                  */
 146                 wasLocked = (storeLocked > 0);
 147                 if (!wasLocked) {
 148                         (void) __SCDynamicStoreLock(*store, FALSE);
 149                 }
 150
 151                 /* remove keys from "locked" store" */
 152                 for (i = 0; i < keyCnt; i++) {
 153                         if (isMySessionKey(sessionKey, CFArrayGetValueAtIndex(keys, i))) {
 154                                 (void) __SCDynamicStoreRemoveValue(*store, CFArrayGetValueAtIndex(keys, i), TRUE);
 155                         }
 156                 }
 157
 158                 if (wasLocked) {
 159                         /* remove keys from "unlocked" store" */
 160                         _swapLockedStoreData();
 161                         for (i = 0; i < keyCnt; i++) {
 162                                 if (isMySessionKey(sessionKey, CFArrayGetValueAtIndex(keys, i)))
 163                                         (void) __SCDynamicStoreRemoveValue(*store, CFArrayGetValueAtIndex(keys, i), TRUE);
 164                         }
 165                         _swapLockedStoreData();
 166                 }
 167
 168                 /*
 169                  * Note: everyone who calls __SCDynamicStoreClose() ends
 170                  *       up removing this sessions dictionary. As such,
 171                  *       we don't need to worry about the session keys.
 172                  */
 173         }
 174         CFRelease(sessionKey);
 175
 176         /* release the lock */
 177         if (storePrivate->locked) {
 178                 (void) __SCDynamicStoreUnlock(*store, FALSE);
 179         }
 180
 181         /*
 182          * Remove the run loop source on the server port (for this
 183          * client).  Then, invalidate and release the port.
 184          */
 185         mySession = getSession(storePrivate->server);
 186         if (mySession->serverRunLoopSource) {
 187                 CFRunLoopRemoveSource(CFRunLoopGetCurrent(),
 188                                       mySession->serverRunLoopSource,
 189                                       kCFRunLoopDefaultMode);
 190                 CFRelease(mySession->serverRunLoopSource);
 191         }
 192         CFMachPortInvalidate(mySession->serverPort);
 193         CFRelease(mySession->serverPort);
 194
 195         storePrivate->server = MACH_PORT_NULL;
 196         CFRelease(*store);
 197         *store = NULL;
 198
 199         return kSCStatusOK;
 200 }
 201
 202
 203 __private_extern__
 204 kern_return_t
 205 _configclose(mach_port_t server, int *sc_status)
 206 {
 207         serverSessionRef        mySession = getSession(server);
 208
 209         if (_configd_verbose) {
 210                 SCLog(TRUE, LOG_DEBUG, CFSTR("Close session."));
 211                 SCLog(TRUE, LOG_DEBUG, CFSTR("  server = %d"), server);
 212         }
 213
 214         if (!mySession) {
 215                 *sc_status = kSCStatusNoStoreSession;   /* you must have an open session to play */
 216                 return KERN_SUCCESS;
 217         }
 218
 219         /*
 220          * Close the session.
 221          */
 222         *sc_status = __SCDynamicStoreClose(&mySession->store, FALSE);
 223         if (*sc_status != kSCStatusOK) {
 224                 SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  __SCDynamicStoreClose(): %s"), SCErrorString(*sc_status));
 225                 return KERN_SUCCESS;
 226         }
 227
 228         /*
 229          * Remove the session entry.
 230          */
 231         removeSession(server);
 232
 233         return KERN_SUCCESS;
 234 }