diff usr/src/cmd/cmd-inet/usr.lib/mdnsd/PlatformCommon.c @ 0:c9caec207d52 b86

Initial porting based on b86
author Koji Uno <koji.uno@sun.com>
date Tue, 02 Jun 2009 18:56:50 +0900
parents
children 1a15d5aaf794
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/cmd/cmd-inet/usr.lib/mdnsd/PlatformCommon.c	Tue Jun 02 18:56:50 2009 +0900
@@ -0,0 +1,138 @@
+/* -*- Mode: C; tab-width: 4 -*-
+ *
+ * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+
+    Change History (most recent first):
+
+$Log: PlatformCommon.c,v $
+Revision 1.7  2006/08/14 23:24:56  cheshire
+Re-licensed mDNSResponder daemon source code under Apache License, Version 2.0
+
+Revision 1.6  2005/04/08 21:30:16  ksekar
+<rdar://problem/4007457> Compiling problems with mDNSResponder-98 on Solaris/Sparc v9
+Patch submitted by Bernd Kuhls
+
+Revision 1.5  2005/02/01 19:33:30  ksekar
+<rdar://problem/3985239> Keychain format too restrictive
+
+Revision 1.4  2005/01/19 19:19:21  ksekar
+<rdar://problem/3960191> Need a way to turn off domain discovery
+
+Revision 1.3  2004/12/13 17:46:52  cheshire
+Use sizeof(buf) instead of fixed constant 1024
+
+Revision 1.2  2004/12/01 03:30:29  cheshire
+<rdar://problem/3889346> Add Unicast DNS support to mDNSPosix
+
+Revision 1.1  2004/12/01 01:51:35  cheshire
+Move ReadDDNSSettingsFromConfFile() from mDNSMacOSX.c to PlatformCommon.c
+
+ */
+
+#pragma ident	"@(#)PlatformCommon.c	1.1	07/08/13 SMI"
+
+#include <stdio.h>				// Needed for fopen() etc.
+#include <unistd.h>				// Needed for close()
+#include <string.h>				// Needed for strlen() etc.
+#include <errno.h>			// Needed for errno etc.
+#include <sys/socket.h>			// Needed for socket() etc.
+#include <netinet/in.h>			// Needed for sockaddr_in
+
+#include "mDNSEmbeddedAPI.h"	// Defines the interface provided to the client layer above
+#include "PlatformCommon.h"
+
+#ifdef NOT_HAVE_SOCKLEN_T
+    typedef unsigned int socklen_t;
+#endif
+
+// Bind a UDP socket to a global destination to find the default route's interface address
+mDNSexport void FindDefaultRouteIP(mDNSAddr *a)
+	{
+	struct sockaddr_in addr;
+	socklen_t len = sizeof(addr);
+	int sock = socket(AF_INET,SOCK_DGRAM,0);
+	a->type = mDNSAddrType_None;
+	if (sock == -1) return;
+	addr.sin_family = AF_INET;
+	addr.sin_port = 1;	// Not important, any port and public address will do
+	addr.sin_addr.s_addr = 0x11111111;
+	if ((connect(sock,(const struct sockaddr*)&addr,sizeof(addr))) == -1) { close(sock); return; }
+	if ((getsockname(sock,(struct sockaddr*)&addr, &len)) == -1) { close(sock); return; }
+	close(sock);
+	a->type = mDNSAddrType_IPv4;
+	a->ip.v4.NotAnInteger = addr.sin_addr.s_addr;
+	}
+
+// dst must be at least MAX_ESCAPED_DOMAIN_NAME bytes, and option must be less than 32 bytes in length
+mDNSlocal mDNSBool GetConfigOption(char *dst, const char *option, FILE *f)
+	{
+	char buf[32+1+MAX_ESCAPED_DOMAIN_NAME];	// Option name, one space, option value
+	unsigned int len = strlen(option);
+	if (len + 1 + MAX_ESCAPED_DOMAIN_NAME > sizeof(buf)-1) { LogMsg("GetConfigOption: option %s too long", option); return mDNSfalse; }
+	fseek(f, 0, SEEK_SET);  // set position to beginning of stream
+	while (fgets(buf, sizeof(buf), f))		// Read at most sizeof(buf)-1 bytes from file, and append '\0' C-string terminator
+		{
+		if (!strncmp(buf, option, len))
+			{
+			strncpy(dst, buf + len + 1, MAX_ESCAPED_DOMAIN_NAME-1);
+			if (dst[MAX_ESCAPED_DOMAIN_NAME-1]) dst[MAX_ESCAPED_DOMAIN_NAME-1] = '\0';
+			len = strlen(dst);
+			if (len && dst[len-1] == '\n') dst[len-1] = '\0';  // chop newline
+			return mDNStrue;
+			}
+		}
+	debugf("Option %s not set", option);
+	return mDNSfalse;
+	}
+
+mDNSexport void ReadDDNSSettingsFromConfFile(mDNS *const m, const char *const filename, domainname *const hostname, domainname *const domain, mDNSBool *DomainDiscoveryDisabled)
+	{
+	char buf   [MAX_ESCAPED_DOMAIN_NAME];
+	char secret[MAX_ESCAPED_DOMAIN_NAME] = "";
+	mStatus err;
+	FILE *f = fopen(filename, "r");
+
+    if (hostname)                 hostname->c[0] = 0;
+    if (domain)                   domain->c[0] = 0;
+	if (DomainDiscoveryDisabled) *DomainDiscoveryDisabled = mDNSfalse;
+
+	if (f)
+		{
+		if (DomainDiscoveryDisabled && GetConfigOption(buf, "DomainDiscoveryDisabled", f) && !strcasecmp(buf, "true")) *DomainDiscoveryDisabled = mDNStrue;
+		if (hostname && GetConfigOption(buf, "hostname", f) && !MakeDomainNameFromDNSNameString(hostname, buf)) goto badf;
+		if (domain && GetConfigOption(buf, "zone", f) && !MakeDomainNameFromDNSNameString(domain, buf)) goto badf;
+		GetConfigOption(secret, "secret-64", f);  // failure means no authentication	   		
+		fclose(f);
+		f = NULL;
+		}
+	else
+		{
+		if (errno != ENOENT) LogMsg("ERROR: Config file exists, but cannot be opened.");
+		return;
+		}
+
+	if (domain && domain->c[0] && secret[0])
+		{
+		// for now we assume keyname = service reg domain and we use same key for service and hostname registration
+		err = mDNS_SetSecretForZone(m, domain, domain, secret);
+		if (err) LogMsg("ERROR: mDNS_SetSecretForZone returned %d for domain %##s", err, domain->c);
+		}
+
+	return;
+
+	badf:
+	LogMsg("ERROR: malformatted config file");
+	if (f) fclose(f);	
+	}