X-Git-Url: https://git.saurik.com/apple/configd.git/blobdiff_plain/edebe297f772e4cdd76278ebb777820466d2917b..78deefe8e371573ba1c4e975adf72db0dddc81f9:/Plugins/KernelEventMonitor/ev_ipv6.c

diff --git a/Plugins/KernelEventMonitor/ev_ipv6.c b/Plugins/KernelEventMonitor/ev_ipv6.c
index 880713a..4b3e6bc 100644
--- a/Plugins/KernelEventMonitor/ev_ipv6.c
+++ b/Plugins/KernelEventMonitor/ev_ipv6.c
@@ -1,15 +1,15 @@
 /*
- * Copyright (c) 2002-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2002-2007, 2011, 2013, 2015, 2017, 2018 Apple Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
- * 
+ *
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * compliance with the License. Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this
  * file.
- * 
+ *
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -17,7 +17,7 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
- * 
+ *
  * @APPLE_LICENSE_HEADER_END@
  */
 
@@ -30,7 +30,6 @@
 
 
 #include "eventmon.h"
-#include "cache.h"
 #include "ev_ipv6.h"
 
 #define s6_addr16 __u6_addr.__u6_addr16
@@ -41,6 +40,9 @@
 #endif
 #endif	/* NOTYET */
 
+#ifndef	kSCEntNetIPv6DuplicatedAddress
+#define	kSCEntNetIPv6DuplicatedAddress		CFSTR("IPv6DuplicatedAddress")
+#endif	/* kSCEntNetIPv6DuplicatedAddress */
 
 static void
 appendAddress(CFMutableDictionaryRef dict, CFStringRef key, struct sockaddr_in6 *sin6)
@@ -48,7 +50,7 @@ appendAddress(CFMutableDictionaryRef dict, CFStringRef key, struct sockaddr_in6
 	CFStringRef		addr;
 	CFArrayRef		addrs;
 	CFMutableArrayRef	newAddrs;
-	char			str[64];
+	char			str[INET6_ADDRSTRLEN];
 
 	addrs = CFDictionaryGetValue(dict, key);
 	if (addrs) {
@@ -58,7 +60,7 @@ appendAddress(CFMutableDictionaryRef dict, CFStringRef key, struct sockaddr_in6
 	}
 
 	if (inet_ntop(AF_INET6, (const void *)&sin6->sin6_addr, str, sizeof(str)) == NULL) {
-		SCLog(TRUE, LOG_ERR, CFSTR("inet_ntop() failed: %s"), strerror(errno));
+		SC_log(LOG_INFO, "inet_ntop() failed: %s", strerror(errno));
 		str[0] = '\0';
 	}
 
@@ -104,7 +106,7 @@ appendPrefixLen(CFMutableDictionaryRef dict, struct sockaddr_in6 *sin6)
 	CFArrayRef		prefixLens;
 	CFMutableArrayRef	newPrefixLens;
 
-	register int		byte;
+	register size_t		byte;
 	register int		bit;
 	int			plen		= 0;
 
@@ -185,7 +187,7 @@ appendScopeID(CFMutableDictionaryRef dict, struct sockaddr_in6 *sin6)
 
 
 static CFMutableDictionaryRef
-getIF(CFStringRef key, CFMutableDictionaryRef oldIFs, CFMutableDictionaryRef newIFs)
+copyIF(CFStringRef key, CFMutableDictionaryRef oldIFs, CFMutableDictionaryRef newIFs)
 {
 	CFDictionaryRef		dict		= NULL;
 	CFMutableDictionaryRef	newDict		= NULL;
@@ -193,7 +195,7 @@ getIF(CFStringRef key, CFMutableDictionaryRef oldIFs, CFMutableDictionaryRef new
 	if (CFDictionaryGetValueIfPresent(newIFs, key, (const void **)&dict)) {
 		newDict = CFDictionaryCreateMutableCopy(NULL, 0, dict);
 	} else {
-		dict = cache_SCDynamicStoreCopyValue(store, key);
+		dict = SCDynamicStoreCopyValue(store, key);
 		if (dict) {
 			CFDictionarySetValue(oldIFs, key, dict);
 			if (isA_CFDictionary(dict)) {
@@ -232,9 +234,17 @@ updateStore(const void *key, const void *value, void *context)
 
 	if (!dict || !CFEqual(dict, newDict)) {
 		if (CFDictionaryGetCount(newDict) > 0) {
-			cache_SCDynamicStoreSetValue(store, key, newDict);
+			SC_log(LOG_DEBUG, "Update interface configuration: %@: %@", key, newDict);
+			SCDynamicStoreSetValue(store, key, newDict);
 		} else if (dict) {
-			cache_SCDynamicStoreRemoveValue(store, key);
+			CFDictionaryRef		oldDict;
+
+			oldDict = SCDynamicStoreCopyValue(store, key);
+			if (oldDict != NULL) {
+				SC_log(LOG_DEBUG, "Update interface configuration: %@: <removed>", key);
+				CFRelease(oldDict);
+			}
+			SCDynamicStoreRemoveValue(store, key);
 		}
 		network_changed = TRUE;
 	}
@@ -268,7 +278,7 @@ interface_update_ipv6(struct ifaddrs *ifap, const char *if_name)
 
 	if (!ifap) {
 		if (getifaddrs(&ifap_temp) == -1) {
-			SCLog(TRUE, LOG_ERR, CFSTR("getifaddrs() failed: %s"), strerror(errno));
+			SC_log(LOG_NOTICE, "getifaddrs() failed: %s", strerror(errno));
 			goto error;
 		}
 		ifap = ifap_temp;
@@ -295,7 +305,6 @@ interface_update_ipv6(struct ifaddrs *ifap, const char *if_name)
 		if (sock == -1) {
 			sock = dgram_socket(AF_INET6);
 			if (sock == -1) {
-				SCLog(TRUE, LOG_NOTICE, CFSTR("interface_update_ipv6: socket open failed, %s"), strerror(errno));
 				goto error;
 			}
 		}
@@ -308,12 +317,13 @@ interface_update_ipv6(struct ifaddrs *ifap, const char *if_name)
 									  kSCEntNetIPv6);
 		CFRelease(interface);
 
-		newDict = getIF(key, oldIFs, newIFs);
+		newDict = copyIF(key, oldIFs, newIFs);
 
-		sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
+		/* ALIGN: ifa->ifa_addr aligned (getifaddrs), cast ok. */
+		sin6 = (struct sockaddr_in6 *)(void *)ifa->ifa_addr;
 
 		/* XXX: embedded link local addr check */
-		if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
+		if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) || IN6_IS_ADDR_MC_LINKLOCAL(&sin6->sin6_addr)) {
 			u_int16_t	index;
 
 			index = sin6->sin6_addr.s6_addr16[1];
@@ -325,29 +335,34 @@ interface_update_ipv6(struct ifaddrs *ifap, const char *if_name)
 			}
 		}
 
-		bzero((char *)&ifr6, sizeof(ifr6));
-		strncpy(ifr6.ifr_name, ifa->ifa_name, sizeof(ifr6.ifr_name));
+		memset((char *)&ifr6, 0, sizeof(ifr6));
+		strlcpy(ifr6.ifr_name, ifa->ifa_name, sizeof(ifr6.ifr_name));
 		ifr6.ifr_addr = *sin6;
 		if (ioctl(sock, SIOCGIFAFLAG_IN6, &ifr6) == -1) {
 			/* if flags not available for this address */
-			SCLog(TRUE, LOG_NOTICE, CFSTR("interface_update_ipv6: ioctl failed, %s"), strerror(errno));
+			SC_log((errno != EADDRNOTAVAIL) ? LOG_NOTICE : LOG_DEBUG, "ioctl() failed: %s",
+			      strerror(errno));
 		}
 
 		appendAddress  (newDict, kSCPropNetIPv6Addresses, sin6);
 #ifdef	NOTYET
 		appendScopeID  (newDict, sin6);
 #endif	/* NOTYET */
-		appendPrefixLen(newDict, (struct sockaddr_in6 *)ifa->ifa_netmask);
+		/* ALIGN: ifa should be aligned (from getifaddrs), cast ok.
+		 * appendPrefixLen expect byte alignment */
+		appendPrefixLen(newDict, (struct sockaddr_in6 *)(void *)ifa->ifa_netmask);
 		appendFlags    (newDict, flags6);
 
 
-		if (ifa->ifa_flags & IFF_POINTOPOINT) {
+		if (ifa->ifa_flags & IFF_POINTOPOINT
+		    && ifa->ifa_dstaddr != NULL) {
 			struct sockaddr_in6	*dst6;
 
-			dst6 = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
+			/* ALIGN: ifa should be aligned (from getifaddrs), cast ok. */
+			dst6 = (struct sockaddr_in6 *)(void *)ifa->ifa_dstaddr;
 
 			/* XXX: embedded link local addr check */
-			if (IN6_IS_ADDR_LINKLOCAL(&dst6->sin6_addr)) {
+			if (IN6_IS_ADDR_LINKLOCAL(&dst6->sin6_addr) || IN6_IS_ADDR_MC_LINKLOCAL(&dst6->sin6_addr)) {
 				u_int16_t	index;
 
 				index = dst6->sin6_addr.s6_addr16[1];
@@ -376,7 +391,7 @@ interface_update_ipv6(struct ifaddrs *ifap, const char *if_name)
 									  kSCEntNetIPv6);
 		CFRelease(interface);
 
-		newDict = getIF(key, oldIFs, newIFs);
+		newDict = copyIF(key, oldIFs, newIFs);
 
 		CFDictionarySetValue(newIFs, key, newDict);
 		CFRelease(newDict);
@@ -394,3 +409,70 @@ interface_update_ipv6(struct ifaddrs *ifap, const char *if_name)
 
 	return;
 }
+
+__private_extern__
+void
+ipv6_duplicated_address(const char * if_name, const struct in6_addr * addr,
+			int hw_len, const void * hw_addr)
+{
+	uint8_t	*		hw_addr_bytes = (uint8_t *)hw_addr;
+	int			i;
+	CFStringRef		if_name_cf;
+	CFMutableStringRef	key;
+	char			ntopbuf[INET6_ADDRSTRLEN];
+	CFStringRef		prefix;
+
+	if_name_cf = CFStringCreateWithCString(NULL, if_name,
+					       kCFStringEncodingASCII);
+	prefix = SCDynamicStoreKeyCreateNetworkInterfaceEntity(NULL,
+							       kSCDynamicStoreDomainState,
+							       if_name_cf,
+							       kSCEntNetIPv6DuplicatedAddress);
+	ntopbuf[0] = '\0';
+	(void)inet_ntop(AF_INET6, addr, ntopbuf, sizeof(ntopbuf));
+	key = CFStringCreateMutableCopy(NULL, 0, prefix);
+	CFStringAppendFormat(key, NULL, CFSTR("/%s"), ntopbuf);
+	for (i = 0; i < hw_len; i++) {
+	    CFStringAppendFormat(key, NULL, CFSTR("%s%02x"),
+				 (i == 0) ? "/" : ":", hw_addr_bytes[i]);
+	}
+	SCDynamicStoreNotifyValue(store, key);
+	CFRelease(key);
+	CFRelease(prefix);
+	CFRelease(if_name_cf);
+}
+
+__private_extern__
+void
+nat64_prefix_request(const char *if_name)
+{
+	CFStringRef		if_name_cf;
+	CFStringRef		key;
+
+	if_name_cf = CFStringCreateWithCString(NULL, if_name, kCFStringEncodingASCII);
+	key = SCDynamicStoreKeyCreateNetworkInterfaceEntity(NULL,
+							    kSCDynamicStoreDomainState,
+							    if_name_cf,
+							    kSCEntNetNAT64PrefixRequest);
+	CFRelease(if_name_cf);
+	SC_log(LOG_DEBUG, "Post NAT64 prefix request: %@", key);
+	SCDynamicStoreNotifyValue(store, key);
+	CFRelease(key);
+}
+
+__private_extern__ void
+ipv6_router_expired(const char *if_name)
+{
+	CFStringRef		if_name_cf;
+	CFStringRef		key;
+
+	if_name_cf = CFStringCreateWithCString(NULL, if_name, kCFStringEncodingASCII);
+	key = SCDynamicStoreKeyCreateNetworkInterfaceEntity(NULL,
+							    kSCDynamicStoreDomainState,
+							    if_name_cf,
+							    kSCEntNetIPv6RouterExpired);
+	CFRelease(if_name_cf);
+	SC_log(LOG_DEBUG, "Post IPv6 Router Expired: %@", key);
+	SCDynamicStoreNotifyValue(store, key);
+	CFRelease(key);
+}