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* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#include <errno.h>
#include <string.h>
#include "unistd_wrapper.h"
#import "OFDNSResolver.h"
#import "OFArray.h"
#import "OFCharacterSet.h"
#import "OFDNSRequest.h"
#import "OFDNSResponse.h"
#import "OFData.h"
#import "OFDate.h"
#import "OFDictionary.h"
#import "OFFile.h"
#import "OFLocale.h"
#import "OFNumber.h"
#import "OFPair.h"
#import "OFString.h"
#import "OFTimer.h"
#import "OFUDPSocket.h"
#import "OFUDPSocket+Private.h"
#ifdef OF_WINDOWS
# import "OFWindowsRegistryKey.h"
#endif
#import "OFDNSRequestFailedException.h"
#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFInvalidServerReplyException.h"
#import "OFOpenItemFailedException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
#import "OFTruncatedDataException.h"
#ifdef OF_WINDOWS
# define interface struct
# include <iphlpapi.h>
# undef interface
#endif
#import "socket_helpers.h"
#ifdef OF_NINTENDO_3DS
# include <3ds.h>
#endif
#ifndef SOCK_DNS
# define SOCK_DNS 0
#endif
#define BUFFER_LENGTH OF_DNS_RESOLVER_BUFFER_LENGTH
/*
* RFC 1035 doesn't specify if pointers to pointers are allowed, and if so how
* many. Since it's unspecified, we have to assume that it might happen, but we
* also want to limit it to avoid DoS. Limiting it to 16 levels of pointers and
* immediately rejecting pointers to itself seems like a fair balance.
*/
#define MAX_ALLOWED_POINTERS 16
#define CNAME_RECURSION 3
#if defined(OF_HAIKU)
# define HOSTS_PATH @"/system/settings/network/hosts"
# define RESOLV_CONF_PATH @"/system/settings/network/resolv.conf"
#elif defined(OF_MORPHOS)
# define HOSTS_PATH @"ENV:sys/net/hosts"
# define RESOLV_CONF_PATH @"ENV:sys/net/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
/*
* TODO:
*
* - Fallback to TCP
*/
static const of_run_loop_mode_t resolveRunLoopMode =
@"of_dns_resolver_resolve_mode";
@interface OFDNSResolverSettings: OFObject
{
@public
OFArray OF_GENERIC(OFString *) *_nameServers, *_searchDomains;
of_time_interval_t _timeout;
unsigned int _maxAttempts, _minNumberOfDotsInAbsoluteName;
}
- (instancetype)
initWithNameServers: (OFArray *)nameServers
searchDomains: (OFArray *)searchDomains
timeout: (of_time_interval_t)timeout
maxAttempts: (unsigned int)maxAttempts
minNumberOfDotsInAbsoluteName: (unsigned int)minNumberOfDotsInAbsoluteName;
@end
@interface OFDNSResolverQuery: OFObject
{
@public
OFDNSRequest *_request;
OFString *_domainName;
OFNumber *_ID;
OFDNSResolverSettings *_settings;
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* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#include <string.h>
#import "OFDNSResolver.h"
#import "OFArray.h"
#import "OFDNSRequest.h"
#import "OFDNSResolverSettings.h"
#import "OFDNSResponse.h"
#import "OFData.h"
#import "OFDate.h"
#import "OFDictionary.h"
#import "OFNumber.h"
#import "OFPair.h"
#import "OFString.h"
#import "OFTimer.h"
#import "OFUDPSocket.h"
#import "OFUDPSocket+Private.h"
#import "OFDNSRequestFailedException.h"
#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFInvalidServerReplyException.h"
#import "OFOutOfRangeException.h"
#import "OFTruncatedDataException.h"
#ifndef SOCK_DNS
# define SOCK_DNS 0
#endif
#define BUFFER_LENGTH OF_DNS_RESOLVER_BUFFER_LENGTH
/*
* RFC 1035 doesn't specify if pointers to pointers are allowed, and if so how
* many. Since it's unspecified, we have to assume that it might happen, but we
* also want to limit it to avoid DoS. Limiting it to 16 levels of pointers and
* immediately rejecting pointers to itself seems like a fair balance.
*/
#define MAX_ALLOWED_POINTERS 16
#define CNAME_RECURSION 3
/*
* TODO:
*
* - Fallback to TCP
*/
static const of_run_loop_mode_t resolveRunLoopMode =
@"of_dns_resolver_resolve_mode";
@interface OFDNSResolverQuery: OFObject
{
@public
OFDNSRequest *_request;
OFString *_domainName;
OFNumber *_ID;
OFDNSResolverSettings *_settings;
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bool _done;
OFData *_socketAddresses;
id _exception;
}
@end
@interface OFDNSResolver () <OFUDPSocketDelegate>
- (void)of_setDefaults;
- (void)of_obtainSystemConfig;
#if defined(OF_HAVE_FILES) && !defined(OF_NINTENDO_3DS)
- (void)of_parseHosts: (OFString *)path;
# if !defined(OF_WINDOWS) && !defined(OF_AMIGAOS4)
- (void)of_parseResolvConf: (OFString *)path;
- (void)of_parseResolvConfOption: (OFString *)option;
# endif
#endif
#ifdef OF_WINDOWS
- (void)of_obtainWindowsSystemConfig;
#endif
#ifdef OF_AMIGAOS4
- (void)of_obtainAmigaOS4SystemConfig;
#endif
#ifdef OF_NINTENDO_3DS
- (void)of_obtainNintendo3DSSytemConfig;
#endif
- (void)of_reloadSystemConfig;
- (void)of_asyncPerformRequest: (OFDNSRequest *)request
settings: (OFDNSResolverSettings *)settings
nameServersIndex: (size_t)nameServersIndex
searchDomainsIndex: (size_t)searchDomainsIndex
runLoopMode: (of_run_loop_mode_t)runLoopMode
target: (id)target
selector: (SEL)selector
context: (id)context;
- (void)of_asyncPerformRequest: (OFDNSRequest *)request
runLoopMode: (of_run_loop_mode_t)runLoopMode
target: (id)target
selector: (SEL)selector
context: (id)context;
- (void)of_sendQuery: (OFDNSResolverQuery *)query
runLoopMode: (of_run_loop_mode_t)runLoopMode;
- (void)of_queryWithIDTimedOut: (OFDNSResolverQuery *)query;
@end
#ifndef OF_WII
static OFString *
domainFromHostname(void)
{
char hostname[256];
OFString *domain;
if (gethostname(hostname, 256) != 0)
return nil;
domain = [OFString stringWithCString: hostname
encoding: [OFLocale encoding]];
@try {
of_socket_address_parse_ip(domain, 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 = [domain rangeOfString: @"."].location;
if (pos == OF_NOT_FOUND)
return nil;
return [domain substringWithRange:
of_range(pos + 1, domain.length - pos - 1)];
}
}
#endif
static bool
isFQDN(OFString *host, OFDNSResolverSettings *settings)
{
const char *UTF8String = host.UTF8String;
size_t length = host.UTF8StringLength;
unsigned int dots = 0;
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bool _done;
OFData *_socketAddresses;
id _exception;
}
@end
@interface OFDNSResolver () <OFUDPSocketDelegate>
- (void)of_asyncPerformRequest: (OFDNSRequest *)request
settings: (OFDNSResolverSettings *)settings
nameServersIndex: (size_t)nameServersIndex
searchDomainsIndex: (size_t)searchDomainsIndex
runLoopMode: (of_run_loop_mode_t)runLoopMode
target: (id)target
selector: (SEL)selector
context: (id)context;
- (void)of_sendQuery: (OFDNSResolverQuery *)query
runLoopMode: (of_run_loop_mode_t)runLoopMode;
- (void)of_queryWithIDTimedOut: (OFDNSResolverQuery *)query;
@end
static bool
isFQDN(OFString *host, OFDNSResolverSettings *settings)
{
const char *UTF8String = host.UTF8String;
size_t length = host.UTF8StringLength;
unsigned int dots = 0;
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id, id) = (void (*)(id, SEL, OFDNSResolver *, OFString *,
OFDNSResponse *, id, id))[target methodForSelector: selector];
method(target, selector, resolver, domainName, response, context,
exception);
}
@implementation OFDNSResolverSettings
- (instancetype)initWithNameServers: (OFArray *)nameServers
searchDomains: (OFArray *)searchDomains
timeout: (of_time_interval_t)timeout
maxAttempts: (unsigned int)maxAttempts
minNumberOfDotsInAbsoluteName: (unsigned int)minNumberOfDotsInAbsoluteName
{
self = [super init];
@try {
_nameServers = [nameServers copy];
_searchDomains = [searchDomains copy];
_timeout = timeout;
_maxAttempts = maxAttempts;
_minNumberOfDotsInAbsoluteName = minNumberOfDotsInAbsoluteName;
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_nameServers release];
[_searchDomains release];
[super dealloc];
}
@end
@implementation OFDNSResolverQuery
- (instancetype)initWithRequest: (OFDNSRequest *)request
domainName: (OFString *)domainName
ID: (OFNumber *)ID
settings: (OFDNSResolverSettings *)settings
nameServersIndex: (size_t)nameServersIndex
searchDomainsIndex: (size_t)searchDomainsIndex
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id, id) = (void (*)(id, SEL, OFDNSResolver *, OFString *,
OFDNSResponse *, id, id))[target methodForSelector: selector];
method(target, selector, resolver, domainName, response, context,
exception);
}
@implementation OFDNSResolverQuery
- (instancetype)initWithRequest: (OFDNSRequest *)request
domainName: (OFString *)domainName
ID: (OFNumber *)ID
settings: (OFDNSResolverSettings *)settings
nameServersIndex: (size_t)nameServersIndex
searchDomainsIndex: (size_t)searchDomainsIndex
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void *pool = objc_autoreleasePoolPush();
OFMutableData *queryData;
uint16_t tmp;
_request = [request copy];
_domainName = [domainName copy];
_ID = [ID retain];
_settings = [settings retain];
_nameServersIndex = nameServersIndex;
_searchDomainsIndex = searchDomainsIndex;
_target = [target retain];
_selector = selector;
_context = [context retain];
queryData = [OFMutableData dataWithCapacity: 512];
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void *pool = objc_autoreleasePoolPush();
OFMutableData *queryData;
uint16_t tmp;
_request = [request copy];
_domainName = [domainName copy];
_ID = [ID retain];
_settings = [settings copy];
_nameServersIndex = nameServersIndex;
_searchDomainsIndex = searchDomainsIndex;
_target = [target retain];
_selector = selector;
_context = [context retain];
queryData = [OFMutableData dataWithCapacity: 512];
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secondObject: recordTypeNumber]];
request = [OFDNSRequest
requestWithHost: alias
recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
recordType: recordType];
[_resolver of_asyncPerformRequest: request
runLoopMode: runLoopMode
target: self
selector: @selector(resolver:
didResolveCNAME:response:
context:exception:)
context: recordTypeNumber];
}
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secondObject: recordTypeNumber]];
request = [OFDNSRequest
requestWithHost: alias
recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
recordType: recordType];
[_resolver of_asyncPerformRequest: request
settings: nil
nameServersIndex: 0
searchDomainsIndex: 0
runLoopMode: runLoopMode
target: self
selector: @selector(resolver:
didResolveCNAME:response:
context:exception:)
context: recordTypeNumber];
}
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_socketAddresses = [socketAddresses retain];
_exception = [exception retain];
_done = true;
}
@end
@implementation OFDNSResolver
@synthesize staticHosts = _staticHosts, nameServers = _nameServers;
@synthesize localDomain = _localDomain, searchDomains = _searchDomains;
@synthesize timeout = _timeout, maxAttempts = _maxAttempts;
@synthesize minNumberOfDotsInAbsoluteName = _minNumberOfDotsInAbsoluteName;
@synthesize usesTCP = _usesTCP, configReloadInterval = _configReloadInterval;
#ifdef OF_AMIGAOS
+ (void)initialize
{
if (self != [OFDNSResolver class])
return;
if (!of_socket_init())
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_socketAddresses = [socketAddresses retain];
_exception = [exception retain];
_done = true;
}
@end
@implementation OFDNSResolver
#ifdef OF_AMIGAOS
+ (void)initialize
{
if (self != [OFDNSResolver class])
return;
if (!of_socket_init())
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}
- (instancetype)init
{
self = [super init];
@try {
_queries = [[OFMutableDictionary alloc] init];
[self of_obtainSystemConfig];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)of_setDefaults
{
_timeout = 2;
_maxAttempts = 3;
_minNumberOfDotsInAbsoluteName = 1;
_usesTCP = false;
#ifndef OF_NINTENDO_3DS
_configReloadInterval = 2;
#else
_configReloadInterval = 0;
#endif
}
- (void)of_obtainSystemConfig
{
void *pool = objc_autoreleasePoolPush();
#ifdef OF_WINDOWS
OFString *path;
#endif
[self of_setDefaults];
#if defined(OF_WINDOWS)
# ifdef OF_HAVE_FILES
path = [[OFWindowsRegistryKey localMachineKey]
stringForValue: @"DataBasePath"
subkeyPath: @"SYSTEM\\CurrentControlSet\\Services\\"
@"Tcpip\\Parameters"];
path = [path stringByAppendingPathComponent: @"hosts"];
if (path != nil)
[self of_parseHosts: path];
# endif
[self of_obtainWindowsSystemConfig];
#elif defined(OF_AMIGAOS4)
[self of_parseHosts: HOSTS_PATH];
[self of_obtainAmigaOS4SystemConfig];
#elif defined(OF_NINTENDO_3DS)
[self of_obtainNintendo3DSSytemConfig];
#elif defined(OF_HAVE_FILES)
[self of_parseHosts: HOSTS_PATH];
[self of_parseResolvConf: RESOLV_CONF_PATH];
#endif
if (_staticHosts == nil) {
OFArray *localhost =
#ifdef OF_HAVE_IPV6
[OFArray arrayWithObjects: @"::1", @"127.0.0.1", nil];
#else
[OFArray arrayWithObject: @"127.0.0.1"];
#endif
_staticHosts = [[OFDictionary alloc]
initWithObject: localhost
forKey: @"localhost"];
}
if (_nameServers == nil)
#ifdef OF_HAVE_IPV6
_nameServers = [[OFArray alloc]
initWithObjects: @"127.0.0.1", @"::1", nil];
#else
_nameServers = [[OFArray alloc] initWithObject: @"127.0.0.1"];
#endif
#ifndef OF_WII
if (_localDomain == nil)
_localDomain = [domainFromHostname() copy];
#endif
if (_searchDomains == nil) {
if (_localDomain != nil)
_searchDomains = [[OFArray alloc]
initWithObject: _localDomain];
else
_searchDomains = [[OFArray alloc] init];
}
_lastConfigReload = [[OFDate alloc] init];
objc_autoreleasePoolPop(pool);
}
- (void)dealloc
{
[self close];
[_staticHosts release];
[_nameServers release];
[_localDomain release];
[_searchDomains release];
[_lastConfigReload release];
[_IPv4Socket cancelAsyncRequests];
[_IPv4Socket release];
#ifdef OF_HAVE_IPV6
[_IPv6Socket cancelAsyncRequests];
[_IPv6Socket release];
#endif
[_queries release];
[super dealloc];
}
#if defined(OF_HAVE_FILES) && !defined(OF_NINTENDO_3DS)
- (void)of_parseHosts: (OFString *)path
{
void *pool = objc_autoreleasePoolPush();
OFCharacterSet *whitespaceCharacterSet =
[OFCharacterSet whitespaceCharacterSet];
OFMutableDictionary *staticHosts;
OFFile *file;
OFString *line;
OFEnumerator *enumerator;
OFMutableArray *addresses;
@try {
file = [OFFile fileWithPath: path
mode: @"r"];
} @catch (OFOpenItemFailedException *e) {
objc_autoreleasePoolPop(pool);
return;
}
staticHosts = [OFMutableDictionary dictionary];
while ((line = [file readLine]) != nil) {
void *pool2 = objc_autoreleasePoolPush();
OFArray *components, *hosts;
size_t pos;
OFString *address;
pos = [line rangeOfString: @"#"].location;
if (pos != OF_NOT_FOUND)
line = [line substringWithRange: of_range(0, pos)];
components = [line
componentsSeparatedByCharactersInSet: whitespaceCharacterSet
options: OF_STRING_SKIP_EMPTY];
if (components.count < 2) {
objc_autoreleasePoolPop(pool2);
continue;
}
address = components.firstObject;
hosts = [components objectsInRange:
of_range(1, components.count - 1)];
for (OFString *host in hosts) {
addresses = [staticHosts objectForKey: host];
if (addresses == nil) {
addresses = [OFMutableArray array];
[staticHosts setObject: addresses
forKey: host];
}
[addresses addObject: address];
}
objc_autoreleasePoolPop(pool2);
}
enumerator = [staticHosts objectEnumerator];
while ((addresses = [enumerator nextObject]) != nil)
[addresses makeImmutable];
[staticHosts makeImmutable];
[_staticHosts release];
_staticHosts = [staticHosts copy];
objc_autoreleasePoolPop(pool);
}
# if !defined(OF_WINDOWS) && !defined(OF_AMIGAOS4)
- (void)of_parseResolvConf: (OFString *)path
{
void *pool = objc_autoreleasePoolPush();
OFCharacterSet *whitespaceCharacterSet =
[OFCharacterSet whitespaceCharacterSet];
OFCharacterSet *commentCharacters = [OFCharacterSet
characterSetWithCharactersInString: @"#;"];
OFMutableArray *nameServers = [[_nameServers mutableCopy] autorelease];
OFFile *file;
OFString *line;
@try {
file = [OFFile fileWithPath: path
mode: @"r"];
} @catch (OFOpenItemFailedException *e) {
objc_autoreleasePoolPop(pool);
return;
}
if (nameServers == nil)
nameServers = [OFMutableArray array];
while ((line = [file readLine]) != nil) {
void *pool2 = objc_autoreleasePoolPush();
size_t pos;
OFArray *components, *arguments;
OFString *option;
pos = [line indexOfCharacterFromSet: commentCharacters];
if (pos != OF_NOT_FOUND)
line = [line substringWithRange: of_range(0, pos)];
components = [line
componentsSeparatedByCharactersInSet: whitespaceCharacterSet
options: OF_STRING_SKIP_EMPTY];
if (components.count < 2) {
objc_autoreleasePoolPop(pool2);
continue;
}
option = components.firstObject;
arguments = [components objectsInRange:
of_range(1, components.count - 1)];
if ([option isEqual: @"nameserver"]) {
if (arguments.count != 1) {
objc_autoreleasePoolPop(pool2);
continue;
}
[nameServers addObject: [arguments firstObject]];
} else if ([option isEqual: @"domain"]) {
if (arguments.count != 1) {
objc_autoreleasePoolPop(pool2);
continue;
}
[_localDomain release];
_localDomain = [arguments.firstObject copy];
} else if ([option isEqual: @"search"]) {
[_searchDomains release];
_searchDomains = [arguments copy];
} else if ([option isEqual: @"options"])
for (OFString *argument in arguments)
[self of_parseResolvConfOption: argument];
objc_autoreleasePoolPop(pool2);
}
[nameServers makeImmutable];
[_nameServers release];
_nameServers = [nameServers copy];
objc_autoreleasePoolPop(pool);
}
- (void)of_parseResolvConfOption: (OFString *)option
{
@try {
if ([option hasPrefix: @"ndots:"]) {
option = [option substringWithRange:
of_range(6, option.length - 6)];
_minNumberOfDotsInAbsoluteName =
(unsigned int)option.decimalValue;
} else if ([option hasPrefix: @"timeout:"]) {
option = [option substringWithRange:
of_range(8, option.length - 8)];
_timeout = option.decimalValue;
} else if ([option hasPrefix: @"attempts:"]) {
option = [option substringWithRange:
of_range(9, option.length - 9)];
_maxAttempts = (unsigned int)option.decimalValue;
} else if ([option hasPrefix: @"reload-period:"]) {
option = [option substringWithRange:
of_range(14, option.length - 14)];
_configReloadInterval = option.decimalValue;
} else if ([option isEqual: @"tcp"])
_usesTCP = true;
} @catch (OFInvalidFormatException *e) {
}
}
# endif
#endif
#ifdef OF_WINDOWS
- (void)of_obtainWindowsSystemConfig
{
of_string_encoding_t encoding = [OFLocale encoding];
OFMutableArray *nameServers;
/*
* We need more space than FIXED_INFO in case we have more than one
* name server, but we also want it to be properly aligned, meaning we
* can't just get a buffer of bytes. Thus, we just get space for 8.
*/
FIXED_INFO fixedInfo[8];
ULONG length = sizeof(fixedInfo);
PIP_ADDR_STRING iter;
if (GetNetworkParams(fixedInfo, &length) != ERROR_SUCCESS)
return;
nameServers = [OFMutableArray array];
for (iter = &fixedInfo->DnsServerList; iter != NULL; iter = iter->Next)
[nameServers addObject:
[OFString stringWithCString: iter->IpAddress.String
encoding: encoding]];
if (nameServers.count > 0) {
[nameServers makeImmutable];
_nameServers = [nameServers copy];
}
if (fixedInfo->DomainName[0] != '\0')
_localDomain = [[OFString alloc]
initWithCString: fixedInfo->DomainName
encoding: encoding];
}
#endif
#ifdef OF_AMIGAOS4
- (void)of_obtainAmigaOS4SystemConfig
{
OFMutableArray *nameServers = [OFMutableArray array];
of_string_encoding_t encoding = [OFLocale encoding];
struct List *nameServerList = ObtainDomainNameServerList();
char buffer[MAXHOSTNAMELEN];
if (nameServerList == NULL)
@throw [OFOutOfMemoryException exception];
@try {
struct DomainNameServerNode *iter =
(struct DomainNameServerNode *)&nameServerList->lh_Head;
while (iter->dnsn_MinNode.mln_Succ != NULL) {
if (iter->dnsn_UseCount != 0 &&
iter->dnsn_Address != NULL) {
OFString *address = [OFString
stringWithCString: iter->dnsn_Address
encoding: encoding];
[nameServers addObject: address];
}
iter = (struct DomainNameServerNode *)
iter->dnsn_MinNode.mln_Succ;
}
} @finally {
ReleaseDomainNameServerList(nameServerList);
}
if (nameServers.count > 0) {
[nameServers makeImmutable];
_nameServers = [nameServers copy];
}
if (GetDefaultDomainName(buffer, sizeof(buffer)))
_localDomain = [[OFString alloc] initWithCString: buffer
encoding: encoding];
}
#endif
#ifdef OF_NINTENDO_3DS
- (void)of_obtainNintendo3DSSytemConfig
{
OFMutableArray *nameServers = [OFMutableArray array];
union {
/*
* For some unknown reason, this needs a 336 bytes buffer and
* always returns 336 bytes.
*/
char bytes[336];
SOCU_DNSTableEntry entries[2];
} buffer;
socklen_t optLen = sizeof(buffer);
if (SOCU_GetNetworkOpt(SOL_CONFIG, NETOPT_DNS_TABLE,
&buffer, &optLen) != 0)
return;
/*
* We're fine if this gets smaller in a future release (unlikely), as
* long as two entries still fit.
*/
if (optLen < sizeof(buffer.entries))
return;
for (uint_fast8_t i = 0; i < 2; i++) {
uint32_t ip = OF_BSWAP32_IF_LE(buffer.entries[i].ip.s_addr);
if (ip == 0)
continue;
[nameServers addObject: [OFString stringWithFormat:
@"%u.%u.%u.%u", (ip >> 24) & 0xFF, (ip >> 16) & 0xFF,
(ip >> 8) & 0xFF, ip & 0xFF]];
}
if (nameServers.count > 0) {
[nameServers makeImmutable];
_nameServers = [nameServers copy];
}
}
#endif
- (void)of_reloadSystemConfig
{
/*
* TODO: Rather than reparsing every time, check what actually changed
* (mtime) and only reset those.
*/
if (_lastConfigReload != nil && _configReloadInterval > 0 &&
_lastConfigReload.timeIntervalSinceNow < _configReloadInterval)
return;
[_staticHosts release];
_staticHosts = nil;
[_nameServers release];
_nameServers = nil;
[_localDomain release];
_localDomain = nil;
[_searchDomains release];
_searchDomains = nil;
[self of_setDefaults];
[_lastConfigReload release];
_lastConfigReload = nil;
[self of_obtainSystemConfig];
}
- (void)of_asyncPerformRequest: (OFDNSRequest *)request
settings: (OFDNSResolverSettings *)settings
nameServersIndex: (size_t)nameServersIndex
searchDomainsIndex: (size_t)searchDomainsIndex
runLoopMode: (of_run_loop_mode_t)runLoopMode
target: (id)target
selector: (SEL)selector
context: (id)context
{
void *pool = objc_autoreleasePoolPush();
OFNumber *ID;
OFString *host, *domainName;
OFDNSResolverQuery *query;
[self of_reloadSystemConfig];
/* Random, unused ID */
do {
ID = [OFNumber numberWithUInt16: (uint16_t)of_random()];
} while ([_queries objectForKey: ID] != nil);
host = request.host;
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}
- (instancetype)init
{
self = [super init];
@try {
_settings = [[OFDNSResolverSettings alloc] init];
_queries = [[OFMutableDictionary alloc] init];
[_settings reload];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[self close];
[_settings release];
[_IPv4Socket cancelAsyncRequests];
[_IPv4Socket release];
#ifdef OF_HAVE_IPV6
[_IPv6Socket cancelAsyncRequests];
[_IPv6Socket release];
#endif
[_queries release];
[super dealloc];
}
- (OFDictionary *)staticHosts
{
return _settings->_staticHosts;
}
- (void)setStaticHosts: (OFDictionary *)staticHosts
{
OFDictionary *old = _settings->_staticHosts;
_settings->_staticHosts = [staticHosts copy];
[old release];
}
- (OFArray *)nameServers
{
return _settings->_nameServers;
}
- (void)setNameServers: (OFArray *)nameServers
{
OFArray *old = _settings->_nameServers;
_settings->_nameServers = [nameServers copy];
[old release];
}
- (OFString *)localDomain
{
return _settings->_localDomain;
}
- (OFArray *)searchDomains
{
return _settings->_searchDomains;
}
- (void)setSearchDomains: (OFArray *)searchDomains
{
OFArray *old = _settings->_searchDomains;
_settings->_searchDomains = [searchDomains copy];
[old release];
}
- (of_time_interval_t)timeout
{
return _settings->_timeout;
}
- (void)setTimeout: (of_time_interval_t)timeout
{
_settings->_timeout = timeout;
}
- (unsigned int)maxAttempts
{
return _settings->_maxAttempts;
}
- (void)setMaxAttempts: (unsigned int)maxAttempts
{
_settings->_maxAttempts = maxAttempts;
}
- (unsigned int)minNumberOfDotsInAbsoluteName
{
return _settings->_minNumberOfDotsInAbsoluteName;
}
- (void)setMinNumberOfDotsInAbsoluteName:
(unsigned int)minNumberOfDotsInAbsoluteName
{
_settings->_minNumberOfDotsInAbsoluteName =
minNumberOfDotsInAbsoluteName;
}
- (bool)usesTCP
{
return _settings->_usesTCP;
}
- (void)setUsesTCP: (bool)usesTCP
{
_settings->_usesTCP = usesTCP;
}
- (of_time_interval_t)configReloadInterval
{
return _settings->_configReloadInterval;
}
- (void)setConfigReloadInterval: (of_time_interval_t)configReloadInterval
{
_settings->_configReloadInterval = configReloadInterval;
}
- (void)of_asyncPerformRequest: (OFDNSRequest *)request
settings: (OFDNSResolverSettings *)settings
nameServersIndex: (size_t)nameServersIndex
searchDomainsIndex: (size_t)searchDomainsIndex
runLoopMode: (of_run_loop_mode_t)runLoopMode
target: (id)target
selector: (SEL)selector
context: (id)context
{
void *pool = objc_autoreleasePoolPush();
OFNumber *ID;
OFString *host, *domainName;
OFDNSResolverQuery *query;
if (settings == nil) {
[_settings reload];
settings = _settings;
}
/* Random, unused ID */
do {
ID = [OFNumber numberWithUInt16: (uint16_t)of_random()];
} while ([_queries objectForKey: ID] != nil);
host = request.host;
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exception: exception];
}
- (void)asyncPerformRequest: (OFDNSRequest *)request
delegate: (id <OFDNSResolverDelegate>)delegate
{
[self of_asyncPerformRequest: request
runLoopMode: of_run_loop_mode_default
target: self
selector: @selector(of_resolver:
didResolveDomainName:response:context:
exception:)
context: delegate];
}
- (void)asyncPerformRequest: (OFDNSRequest *)request
runLoopMode: (of_run_loop_mode_t)runLoopMode
delegate: (id <OFDNSResolverDelegate>)delegate
{
[self of_asyncPerformRequest: request
runLoopMode: runLoopMode
target: self
selector: @selector(of_resolver:
didResolveDomainName:response:context:
exception:)
context: delegate];
}
- (void)of_asyncPerformRequest: (OFDNSRequest *)request
runLoopMode: (of_run_loop_mode_t)runLoopMode
target: (id)target
selector: (SEL)selector
context: (id)context
{
void *pool = objc_autoreleasePoolPush();
OFDNSResolverSettings *settings = [[[OFDNSResolverSettings alloc]
initWithNameServers: _nameServers
searchDomains: _searchDomains
timeout: _timeout
maxAttempts: _maxAttempts
minNumberOfDotsInAbsoluteName: _minNumberOfDotsInAbsoluteName]
autorelease];
[self of_asyncPerformRequest: request
settings: settings
nameServersIndex: 0
searchDomainsIndex: 0
runLoopMode: runLoopMode
target: target
selector: selector
context: context];
objc_autoreleasePoolPop(pool);
}
- (void)of_sendQuery: (OFDNSResolverQuery *)query
runLoopMode: (of_run_loop_mode_t)runLoopMode
{
OFUDPSocket *sock;
OFString *nameServer;
[query->_cancelTimer invalidate];
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exception: exception];
}
- (void)asyncPerformRequest: (OFDNSRequest *)request
delegate: (id <OFDNSResolverDelegate>)delegate
{
[self of_asyncPerformRequest: request
settings: nil
nameServersIndex: 0
searchDomainsIndex: 0
runLoopMode: of_run_loop_mode_default
target: self
selector: @selector(of_resolver:
didResolveDomainName:response:context:
exception:)
context: delegate];
}
- (void)asyncPerformRequest: (OFDNSRequest *)request
runLoopMode: (of_run_loop_mode_t)runLoopMode
delegate: (id <OFDNSResolverDelegate>)delegate
{
[self of_asyncPerformRequest: request
settings: nil
nameServersIndex: 0
searchDomainsIndex: 0
runLoopMode: runLoopMode
target: self
selector: @selector(of_resolver:
didResolveDomainName:response:context:
exception:)
context: delegate];
}
- (void)of_sendQuery: (OFDNSResolverQuery *)query
runLoopMode: (of_run_loop_mode_t)runLoopMode
{
OFUDPSocket *sock;
OFString *nameServer;
[query->_cancelTimer invalidate];
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forMode: runLoopMode];
}
return;
} @catch (OFInvalidFormatException *e) {
}
if ((aliases = [_staticHosts objectForKey: host]) != nil) {
OFMutableData *addresses = [OFMutableData
dataWithItemSize: sizeof(of_socket_address_t)];
id exception = nil;
for (OFString *alias in aliases) {
of_socket_address_t address;
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forMode: runLoopMode];
}
return;
} @catch (OFInvalidFormatException *e) {
}
if ((aliases = [_settings->_staticHosts objectForKey: host]) != nil) {
OFMutableData *addresses = [OFMutableData
dataWithItemSize: sizeof(of_socket_address_t)];
id exception = nil;
for (OFString *alias in aliases) {
of_socket_address_t address;
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requestWithHost: host
recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
recordType: OF_DNS_RESOURCE_RECORD_TYPE_AAAA];
OFNumber *recordTypeNumber =
[OFNumber numberWithInt: OF_DNS_RESOURCE_RECORD_TYPE_AAAA];
[self of_asyncPerformRequest: request
runLoopMode: runLoopMode
target: context
selector: @selector(resolver:
didResolveDomainName:response:
context:exception:)
context: recordTypeNumber];
}
#endif
if (addressFamily == OF_SOCKET_ADDRESS_FAMILY_IPV4 ||
addressFamily == OF_SOCKET_ADDRESS_FAMILY_ANY) {
OFDNSRequest *request = [OFDNSRequest
requestWithHost: host
recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
recordType: OF_DNS_RESOURCE_RECORD_TYPE_A];
OFNumber *recordTypeNumber =
[OFNumber numberWithInt: OF_DNS_RESOURCE_RECORD_TYPE_A];
[self of_asyncPerformRequest: request
runLoopMode: runLoopMode
target: context
selector: @selector(resolver:
didResolveDomainName:response:
context:exception:)
context: recordTypeNumber];
}
|
>
>
>
>
>
>
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requestWithHost: host
recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
recordType: OF_DNS_RESOURCE_RECORD_TYPE_AAAA];
OFNumber *recordTypeNumber =
[OFNumber numberWithInt: OF_DNS_RESOURCE_RECORD_TYPE_AAAA];
[self of_asyncPerformRequest: request
settings: nil
nameServersIndex: 0
searchDomainsIndex: 0
runLoopMode: runLoopMode
target: context
selector: @selector(resolver:
didResolveDomainName:response:
context:exception:)
context: recordTypeNumber];
}
#endif
if (addressFamily == OF_SOCKET_ADDRESS_FAMILY_IPV4 ||
addressFamily == OF_SOCKET_ADDRESS_FAMILY_ANY) {
OFDNSRequest *request = [OFDNSRequest
requestWithHost: host
recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
recordType: OF_DNS_RESOURCE_RECORD_TYPE_A];
OFNumber *recordTypeNumber =
[OFNumber numberWithInt: OF_DNS_RESOURCE_RECORD_TYPE_A];
[self of_asyncPerformRequest: request
settings: nil
nameServersIndex: 0
searchDomainsIndex: 0
runLoopMode: runLoopMode
target: context
selector: @selector(resolver:
didResolveDomainName:response:
context:exception:)
context: recordTypeNumber];
}
|
︙ | | | ︙ | |