ObjFW  Check-in [79a7da1105]

#ifdef OF_NINTENDO_3DS
/* Newer versions of libctru started using id as a parameter name. */
# define id id_3ds
# include <3ds.h>
# undef id
#endif

#ifdef OF_MORPHOS
# include <proto/rexxsyslib.h>
# include <rexx/errors.h>
# include <rexx/storage.h>
#endif

#import "socket_helpers.h"

#if defined(OF_HAIKU)
# define HOSTS_PATH @"/system/settings/network/hosts"
# define RESOLV_CONF_PATH @"/system/settings/network/resolv.conf"



#elif defined(OF_AMIGAOS4)
# define HOSTS_PATH @"DEVS:Internet/hosts"
#elif defined(OF_AMIGAOS)
# define HOSTS_PATH @"AmiTCP:db/hosts"
# define RESOLV_CONF_PATH @"AmiTCP:db/resolv.conf"
#else
# define HOSTS_PATH @"/etc/hosts"
# define RESOLV_CONF_PATH @"/etc/resolv.conf"
#endif


static OFString *
domainFromHostname(OFString *hostname)
{
	if (hostname == nil)



		return nil;




	@try {
		of_socket_address_parse_ip(hostname, 0);

		/*
		 * If we are still here, the host name is a valid IP address.
		 * We can't use that as local domain.
		 */
		return nil;
	} @catch (OFInvalidFormatException *e) {
		/* Not an IP address -> we can use it if it contains a dot. */
		size_t pos = [hostname rangeOfString: @"."].location;

		if (pos == OF_NOT_FOUND)
			return nil;

		return [hostname substringFromIndex: pos + 1];
	}
}

#if !defined(OF_WII) && !defined(OF_MORPHOS)
static OFString *
hostname(void)
{
	char hostname[256];

	if (gethostname(hostname, 256) != 0)
		return nil;

	return [OFString stringWithCString: hostname
				  encoding: [OFLocale encoding]];
}
#endif

#ifdef OF_MORPHOS
static OFString *
arexxCommand(const char *port, const char *command)
{
	struct Library *RexxSysBase;
	struct MsgPort *replyPort = NULL;
	struct RexxMsg *msg = NULL;

	if ((RexxSysBase = OpenLibrary("rexxsyslib.library", 36)) == NULL)
		return nil;

	@try {
		struct MsgPort *rexxPort;

		if ((replyPort = CreateMsgPort()) == NULL)
			return nil;

		if ((msg = CreateRexxMsg(replyPort, NULL, port)) == NULL)
			return nil;

		msg->rm_Action = RXCOMM | RXFF_RESULT;

		if ((msg->rm_Args[0] = (char *)CreateArgstring(
		    command, strlen(command))) == NULL)
			return nil;

		Forbid();

		if ((rexxPort = FindPort(port)) == NULL) {
			Permit();
			return nil;
		}

		PutMsg(rexxPort, &msg->rm_Node);
		Permit();
		WaitPort(replyPort);
		GetMsg(replyPort);

		if (msg->rm_Result1 != RC_OK || msg->rm_Result2 == 0)
			return nil;

		return [OFString stringWithCString: (char *)msg->rm_Result2
					  encoding: [OFLocale encoding]];
	} @finally {
		if (msg != NULL) {
			if (msg->rm_Args[0] != NULL)
				DeleteArgstring(msg->rm_Args[0]);
			if (msg->rm_Result2 != 0)
				DeleteArgstring((char *)msg->rm_Result2);

			DeleteRexxMsg(msg);
		}

		if (replyPort != NULL)
			DeleteMsgPort(replyPort);

		CloseLibrary(RexxSysBase);
	}
}

static OFArray OF_GENERIC(OFString *) *
parseNetStackArray(OFString *string)
{
	if (![string hasPrefix: @"["] || ![string hasSuffix: @"]"])
		return nil;

	string = [string substringWithRange: of_range(1, string.length - 2)];

	return [string componentsSeparatedByString: @"|"];
}
#endif

@implementation OFDNSResolverSettings
- (void)dealloc
{
	[_staticHosts release];

#ifndef OF_NINTENDO_3DS
	_configReloadInterval = 2;
#else
	_configReloadInterval = 0;
#endif
}

#if defined(OF_HAVE_FILES) && !defined(OF_MORPHOS) && !defined(OF_NINTENDO_3DS)
- (void)parseHosts: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();
	OFCharacterSet *whitespaceCharacterSet =
	    [OFCharacterSet whitespaceCharacterSet];
	OFMutableDictionary *staticHosts;
	OFFile *file;
	OFString *line;



	@try {
		file = [OFFile fileWithPath: path
				       mode: @"r"];
	} @catch (OFOpenItemFailedException *e) {
		objc_autoreleasePoolPop(pool);
		return;
	}

	staticHosts = [OFMutableDictionary dictionary];

	while ((line = [file readLine]) != nil) {

		OFArray *components, *hosts;
		size_t pos;
		OFString *address;

		pos = [line rangeOfString: @"#"].location;
		if (pos != OF_NOT_FOUND)
			line = [line substringToIndex: pos];

		components = [line
		    componentsSeparatedByCharactersInSet: whitespaceCharacterSet
						 options: OF_STRING_SKIP_EMPTY];

		if (components.count < 2)

			continue;


		address = components.firstObject;
		hosts = [components objectsInRange:
		    of_range(1, components.count - 1)];

		for (OFString *host in hosts) {
			OFMutableArray *addresses =
			    [staticHosts objectForKey: host];

			if (addresses == nil) {
				addresses = [OFMutableArray array];
				[staticHosts setObject: addresses
						forKey: host];
			}

			[addresses addObject: address];
		}
	}



	for (OFMutableArray *addresses in [staticHosts objectEnumerator])

		[addresses makeImmutable];

	[staticHosts makeImmutable];


	_staticHosts = [staticHosts copy];

	objc_autoreleasePoolPop(pool);
}

# if !defined(OF_WINDOWS) && !defined(OF_AMIGAOS4)
- (void)parseResolvConfOption: (OFString *)option

	if (fixedInfo->DomainName[0] != '\0')
		_localDomain = [[OFString alloc]
		    initWithCString: fixedInfo->DomainName
			   encoding: encoding];
}
#endif

#ifdef OF_MORPHOS
- (void)obtainMorphOSSystemConfig
{
	void *pool = objc_autoreleasePoolPush();
	OFMutableDictionary *staticHosts;

	_nameServers = [parseNetStackArray(arexxCommand("NETSTACK",
	    "QUERY NAMESERVERS")) copy];
	_localDomain = [domainFromHostname(arexxCommand("NETSTACK",
	    "QUERY HOSTNAME")) copy];
	_searchDomains = [parseNetStackArray(arexxCommand("NETSTACK",
	    "QUERY DOMAINS")) copy];

	staticHosts = [OFMutableDictionary dictionary];

	for (OFString *entry in parseNetStackArray(arexxCommand("NETSTACK",
	    "QUERY HOSTS"))) {
		OFArray *components = [entry componentsSeparatedByString: @" "];
		OFString *address;
		OFArray *hosts;

		if (components.count < 2)
			continue;

		address = components.firstObject;
		hosts = [components objectsInRange:
		    of_range(1, components.count - 1)];

		for (OFString *host in hosts) {
			OFMutableArray *addresses =
			    [staticHosts objectForKey: host];

			if (addresses == nil) {
				addresses = [OFMutableArray array];
				[staticHosts setObject: addresses
						forKey: host];
			}

			[addresses addObject: address];
		}
	}
	for (OFMutableArray *addresses in [staticHosts objectEnumerator])
		[addresses makeImmutable];

	[staticHosts makeImmutable];
	_staticHosts = [staticHosts copy];

	objc_autoreleasePoolPop(pool);
}
#endif

#ifdef OF_AMIGAOS4
- (void)obtainAmigaOS4SystemConfig
{
	OFMutableArray *nameServers = [OFMutableArray array];
	of_string_encoding_t encoding = [OFLocale encoding];
	struct List *nameServerList = ObtainDomainNameServerList();

	    stringByExpandingWindowsEnvironmentStrings];

	if (path != nil)
		[self parseHosts: path];
# endif

	[self obtainWindowsSystemConfig];
#elif defined(OF_MORPHOS)
	[self obtainMorphOSSystemConfig];
#elif defined(OF_AMIGAOS4)
	[self parseHosts: HOSTS_PATH];
	[self obtainAmigaOS4SystemConfig];
#elif defined(OF_NINTENDO_3DS)
	[self obtainNintendo3DSSytemConfig];
#elif defined(OF_HAVE_FILES)
	[self parseHosts: HOSTS_PATH];

#ifdef OF_HAVE_IPV6
		_nameServers = [[OFArray alloc]
		    initWithObjects: @"127.0.0.1", @"::1", nil];
#else
		_nameServers = [[OFArray alloc] initWithObject: @"127.0.0.1"];
#endif

#if !defined(OF_WII) && !defined(OF_MORPHOS)
	if (_localDomain == nil)
		_localDomain = [domainFromHostname(hostname()) copy];
#endif

	if (_searchDomains == nil) {
		if (_localDomain != nil)
			_searchDomains = [[OFArray alloc]
			    initWithObject: _localDomain];
		else
			_searchDomains = [[OFArray alloc] init];
	}

	objc_autoreleasePoolPop(pool);
}
@end