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1/*
2 * Copyright (c) 2000-2004, 2006, 2008, 2010-2012, 2015, 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
35#include "configd.h"
36#include "session.h"
37#include "pattern.h"
38
39
40static int
41removeKey(CFMutableArrayRef keys, CFStringRef key)
42{
43 CFIndex i;
44 CFIndex n;
45
46 if (keys == NULL) {
47 /* sorry, empty notifier list */
48 return kSCStatusNoKey;
49 }
50
51 n = CFArrayGetCount(keys);
52 i = CFArrayGetFirstIndexOfValue(keys, CFRangeMake(0, n), key);
53 if (i == kCFNotFound) {
54 /* sorry, key does not exist in notifier list */
55 return kSCStatusNoKey;
56 }
57
58 /* remove key from this sessions notifier list */
59 CFArrayRemoveValueAtIndex(keys, i);
60 return kSCStatusOK;
61}
62
63
64__private_extern__
65int
66__SCDynamicStoreRemoveWatchedKey(SCDynamicStoreRef store, CFStringRef key, Boolean isRegex, Boolean internal)
67{
68 int sc_status = kSCStatusOK;
69 CFNumberRef sessionNum;
70 SCDynamicStorePrivateRef storePrivate = (SCDynamicStorePrivateRef)store;
71
72 SC_trace("%s : %5d : %s : %@",
73 internal ? "*watch-" : "watch- ",
74 storePrivate->server,
75 isRegex ? "pattern" : "key",
76 key);
77
78 /*
79 * remove key from this sessions notifier list after checking that
80 * it was previously defined.
81 */
82 if (isRegex) {
83 sc_status = removeKey(storePrivate->patterns, key);
84 if (sc_status != kSCStatusOK) {
85 goto done;
86 }
87
88 /* remove this session as a pattern watcher */
89 sessionNum = CFNumberCreate(NULL, kCFNumberIntType, &storePrivate->server);
90 patternRemoveSession(key, sessionNum);
91 CFRelease(sessionNum);
92 } else {
93 sc_status = removeKey(storePrivate->keys, key);
94 if (sc_status != kSCStatusOK) {
95 goto done;
96 }
97
98 /*
99 * We are watching a specific key. As such, update the
100 * store to remove our interest in any changes.
101 */
102 sessionNum = CFNumberCreate(NULL, kCFNumberIntType, &storePrivate->server);
103 _removeWatcher(sessionNum, key);
104 CFRelease(sessionNum);
105 }
106
107 done :
108
109 return sc_status;
110}
111
112
113__private_extern__
114kern_return_t
115_notifyremove(mach_port_t server,
116 xmlData_t keyRef, /* raw XML bytes */
117 mach_msg_type_number_t keyLen,
118 int isRegex,
119 int *sc_status
120)
121{
122 CFStringRef key = NULL; /* key (un-serialized) */
123 serverSessionRef mySession;
124
125 /* un-serialize the key */
126 if (!_SCUnserializeString(&key, NULL, (void *)keyRef, keyLen)) {
127 *sc_status = kSCStatusFailed;
128 goto done;
129 }
130
131 if (!isA_CFString(key)) {
132 *sc_status = kSCStatusInvalidArgument;
133 goto done;
134 }
135
136 mySession = getSession(server);
137 if (mySession == NULL) {
138 *sc_status = kSCStatusNoStoreSession; /* you must have an open session to play */
139 goto done;
140 }
141
142 *sc_status = __SCDynamicStoreRemoveWatchedKey(mySession->store,
143 key,
144 isRegex != 0,
145 FALSE);
146
147 done :
148
149 if (key) CFRelease(key);
150 return KERN_SUCCESS;
151}
152