/*
- * Copyright (c) 2004, 2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2004-2007 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
#include <SystemConfiguration/SystemConfiguration.h>
#include <SystemConfiguration/SCDynamicStoreCopyDHCPInfo.h>
#include <SystemConfiguration/SCValidation.h>
-#include <SystemConfiguration/SCPrivate.h> // for SCLog(), SCPrint()
+#include <SystemConfiguration/SCPrivate.h>
#include <notify.h>
/* SPI (from SCNetworkReachability.c) */
Boolean
-_SC_checkResolverReachability(SCDynamicStoreRef *storeP,
- SCNetworkConnectionFlags *flags,
- Boolean *haveDNS,
- const char * nodename);
-
-
-/*
- * checkResolverReachabilityByAddress()
- *
- * Given an IP address, determine whether a reverse DNS query can be issued
- * using the current network configuration.
- */
-static Boolean
-checkResolverReachabilityByAddress(SCDynamicStoreRef store, struct sockaddr *sa)
-{
- SCNetworkConnectionFlags flags;
- Boolean haveDNS;
- int i;
- Boolean ok = FALSE;
- char ptr_name[128];
-
- /*
- * Ideally, we would have an API that given a local IP
- * address would return the DNS server(s) that would field
- * a given PTR query. Fortunately, we do have an SPI which
- * which will provide this information given a "name" so we
- * take the address, convert it into the inverse query name,
- * and find out which servers should be consulted.
- */
-
- switch (sa->sa_family) {
- case AF_INET : {
- union {
- in_addr_t s_addr;
- unsigned char b[4];
- } rev;
- struct sockaddr_in *sin = (struct sockaddr_in *)sa;
-
- /*
- * build "PTR" query name
- * NNN.NNN.NNN.NNN.in-addr.arpa.
- */
- rev.s_addr = sin->sin_addr.s_addr;
- (void) snprintf(ptr_name, sizeof(ptr_name), "%u.%u.%u.%u.in-addr.arpa.",
- rev.b[3],
- rev.b[2],
- rev.b[1],
- rev.b[0]);
-
- break;
- }
-
- case AF_INET6 : {
- int s = 0;
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
- int x = sizeof(ptr_name);
- int n;
-
-#define USE_NIBBLE_QUERY
-#ifdef USE_NIBBLE_QUERY
- /*
- * build IPv6 "nibble" PTR query name (RFC 1886, RFC 3152)
- * N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N.ip6.arpa.
- */
- for (i = sizeof(sin6->sin6_addr) - 1; i >= 0; i--) {
- n = snprintf(&ptr_name[s], x, "%x.%x.",
- ( sin6->sin6_addr.s6_addr[i] & 0xf),
- ((sin6->sin6_addr.s6_addr[i] >> 4) & 0xf));
- if ((n == -1) || (n >= x)) {
- goto done;
- }
-
- s += n;
- x -= n;
- }
-
- n = snprintf(&ptr_name[s], x, "ip6.arpa.");
- if ((n == -1) || (n >= x)) {
- goto done;
- }
-#else /* USE_NIBBLE_QUERY */
- /*
- * build IPv6 "bit-string" PTR query name (RFC 2673)
- * \[xNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN].ip6.arpa.
- */
- n = snprintf(&ptr_name[0], x, "\\[x");
- if ((n == -1) || (n >= x)) {
- goto done;
- }
-
- s += n;
- x -= n;
- for (i = 0; i < 16; i++) {
- n = snprintf(&ptr_name[s], x, "%2.2x", sin6->sin6_addr.s6_addr[i]);
- if ((n == -1) || (n >= x)) {
- goto done;
- }
-
- s += n;
- x -= n;
- }
-
- n = snprintf(&ptr_name[s], x, "].ip6.arpa.");
- if ((n == -1) || (n >= x)) {
- goto done;
- }
-#endif /* USE_NIBBLE_QUERY */
-
- break;
- }
-
- default :
- goto done;
- }
-
- ok = _SC_checkResolverReachability(&store, &flags, &haveDNS, ptr_name);
- if (ok) {
- if (!(flags & kSCNetworkFlagsReachable) ||
- (flags & kSCNetworkFlagsConnectionRequired)) {
- // if not reachable *OR* connection required
- ok = FALSE;
- }
- }
-
- done :
-
- return ok;
-}
+_SC_checkResolverReachabilityByAddress(SCDynamicStoreRef *storeP,
+ SCNetworkConnectionFlags *flags,
+ Boolean *haveDNS,
+ struct sockaddr *sa);
#define HOSTNAME_NOTIFY_KEY "com.apple.system.hostname"
}
-#ifndef kSCPropNetHostName
-#define kSCPropNetHostName CFSTR("HostName")
-#endif
-
-
static CFStringRef
copy_prefs_hostname(SCDynamicStoreRef store)
{
goto done;
}
- name = isA_CFString(CFDictionaryGetValue(dict, kSCPropNetHostName));
+ name = isA_CFString(CFDictionaryGetValue(dict, kSCPropSystemHostName));
if (name == NULL) {
goto done;
}
done :
if (dict != NULL) CFRelease(dict);
-
+
return name;
}
*/
if (host != NULL) {
hostname = CFStringCreateWithCString(NULL, host, kCFStringEncodingUTF8);
- SCLog(TRUE, LOG_INFO, CFSTR("hostname (reverse DNS query) = %@"), hostname);
- set_hostname(hostname);
- CFRelease(hostname);
- goto done;
+ if (hostname != NULL) {
+ SCLog(TRUE, LOG_INFO, CFSTR("hostname (reverse DNS query) = %@"), hostname);
+ set_hostname(hostname);
+ CFRelease(hostname);
+ goto done;
+ }
}
break;
case EAI_NONAME :
+#if defined(EAI_NODATA) && (EAI_NODATA != EAI_NONAME)
+ case EAI_NODATA:
+#endif
/*
* if no name available
*/
}
+static CFStringRef
+replyMPCopyDescription(const void *info)
+{
+ SCDynamicStoreRef store = (SCDynamicStoreRef)info;
+
+ return CFStringCreateWithFormat(NULL,
+ NULL,
+ CFSTR("<getnameinfo_async_start reply MP> {store = %p}"),
+ store);
+}
+
+
static void
start_dns_query(SCDynamicStoreRef store, CFStringRef address)
{
- char addr[64];
- Boolean ok;
- struct sockaddr *sa;
- struct sockaddr_in sin;
- struct sockaddr_in6 sin6;
+ char addr[64];
+ SCNetworkConnectionFlags flags;
+ Boolean haveDNS;
+ Boolean ok;
+ struct sockaddr *sa;
+ struct sockaddr_in sin;
+ struct sockaddr_in6 sin6;
if (_SC_cfstring_to_cstring(address, addr, sizeof(addr), kCFStringEncodingASCII) == NULL) {
SCLog(TRUE, LOG_ERR, CFSTR("could not convert [primary] address"));
p = strchr(addr, '%');
if (p != NULL) {
- sin6.sin6_scope_id = if_nametoindex(p+1);
+ sin6.sin6_scope_id = if_nametoindex(p + 1);
}
sa = (struct sockaddr *)&sin6;
goto done;
}
- ok = checkResolverReachabilityByAddress(store, sa);
+
+ ok = _SC_checkResolverReachabilityByAddress(&store, &flags, &haveDNS, sa);
+ if (ok) {
+ if (!(flags & kSCNetworkFlagsReachable) ||
+ (flags & kSCNetworkFlagsConnectionRequired)) {
+ // if not reachable *OR* connection required
+ ok = FALSE;
+ }
+ }
+
if (ok) {
- CFMachPortContext context = { 0, (void *)store, CFRetain, CFRelease, CFCopyDescription };
+ CFMachPortContext context = { 0
+ , (void *)store
+ , CFRetain
+ , CFRelease
+ , replyMPCopyDescription
+ };
mach_port_t port;
int32_t error;
error = getnameinfo_async_start(&port,
sa,
sa->sa_len,
- 0, // flags
+ NI_NAMEREQD, // flags
reverseDNSComplete,
NULL);
if (error != 0) {
if (dnsPort != NULL) {
/* cancel the outstanding DNS query */
- lu_async_call_cancel(CFMachPortGetPort(dnsPort));
+ getnameinfo_async_cancel(CFMachPortGetPort(dnsPort));
CFRunLoopSourceInvalidate(dnsRLS);
CFRelease(dnsRLS);
dnsRLS = NULL;
projects / apple / configd.git / blobdiff