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/*
* Copyright (c) 2008-2022 Jonathan Schleifer <js@nil.im>
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
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#include "unistd_wrapper.h"
#import "OFDNSResolverSettings.h"
#import "OFArray.h"
#import "OFCharacterSet.h"
#import "OFDate.h"
#import "OFDictionary.h"
#ifdef OF_HAVE_FILES
#import "OFFile.h"
# import "OFFile.h"
# import "OFFileManager.h"
#endif
#import "OFLocale.h"
#import "OFSocket+Private.h"
#import "OFString.h"
#ifdef OF_WINDOWS
# import "OFWindowsRegistryKey.h"
#endif
#import "OFInvalidFormatException.h"
#import "OFOpenItemFailedException.h"
#ifdef OF_WINDOWS
# import "OFOpenWindowsRegistryKeyFailedException.h"
#endif
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
#import "OFUndefinedKeyException.h"
#ifdef OF_WINDOWS
# define interface struct
# include <iphlpapi.h>
# undef interface
#endif
#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
#if defined(OF_AMIGAOS_M68K) || defined(OF_AMIGAOS4)
# define Class IntuitionClass
# include <proto/dos.h>
# undef Class
#endif
#ifdef OF_MORPHOS
# include <proto/rexxsyslib.h>
# include <rexx/errors.h>
# include <rexx/storage.h>
#endif
#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
#ifndef HOST_NAME_MAX
# define HOST_NAME_MAX 255
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if (gethostname(hostname, HOST_NAME_MAX + 1) != 0)
return nil;
return [OFString stringWithCString: hostname
encoding: [OFLocale encoding]];
}
#endif
#ifdef OF_AMIGAOS_M68K
static bool
assignExists(const char *assign)
{
struct DosList *list = LockDosList(LDF_ASSIGNS | LDF_READ);
bool found = (FindDosEntry(list, assign, LDF_ASSIGNS) != NULL);
UnLockDosList(LDF_ASSIGNS | LDF_READ);
return found;
}
#endif
#ifdef OF_MORPHOS
static OFString *
arexxCommand(const char *port, const char *command)
{
struct Library *RexxSysBase;
struct MsgPort *replyPort = NULL;
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copy->_nameServers = [_nameServers copy];
copy->_localDomain = [_localDomain copy];
copy->_searchDomains = [_searchDomains copy];
copy->_timeout = _timeout;
copy->_maxAttempts = _maxAttempts;
copy->_minNumberOfDotsInAbsoluteName =
_minNumberOfDotsInAbsoluteName;
copy->_usesTCP = _usesTCP;
copy->_forcesTCP = _forcesTCP;
copy->_configReloadInterval = _configReloadInterval;
copy->_lastConfigReload = [_lastConfigReload copy];
} @catch (id e) {
[copy release];
@throw e;
}
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[_searchDomains release];
_searchDomains = nil;
_timeout = 2;
_maxAttempts = 3;
_minNumberOfDotsInAbsoluteName = 1;
_usesTCP = false;
_forcesTCP = false;
#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];
OFCharacterSet *commentCharacters =
[OFCharacterSet characterSetWithCharactersInString: @"#;"];
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 readLineWithEncoding: [OFLocale encoding]]) != nil) {
OFArray *components, *hosts;
size_t pos;
OFString *address;
pos = [line rangeOfString: @"#"].location;
pos = [line indexOfCharacterFromSet: commentCharacters];
if (pos != OFNotFound)
line = [line substringToIndex: pos];
components = [line
componentsSeparatedByCharactersInSet: whitespaceCharacterSet
options: OFStringSkipEmptyComponents];
if (components.count < 2)
continue;
address = components.firstObject;
hosts = [components objectsInRange:
OFMakeRange(1, components.count - 1)];
for (OFString *host in hosts) {
OFMutableArray *addresses =
[staticHosts objectForKey: host];
OFMutableArray *addresses;
host = host.lowercaseString;
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)
# ifndef OF_WINDOWS
- (void)parseResolvConfOption: (OFString *)option
{
@try {
if ([option hasPrefix: @"ndots:"]) {
unsigned long long number;
option = [option substringFromIndex: 6];
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_maxAttempts = (unsigned int)number;
} else if ([option hasPrefix: @"reload-period:"]) {
option = [option substringFromIndex: 14];
_configReloadInterval = option.unsignedLongLongValue;
} else if ([option isEqual: @"tcp"])
_usesTCP = true;
_forcesTCP = true;
} @catch (OFInvalidFormatException *e) {
}
}
- (void)parseResolvConf: (OFString *)path
{
void *pool = objc_autoreleasePoolPush();
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options: OFStringSkipEmptyComponents];
if (components.count < 2) {
objc_autoreleasePoolPop(pool2);
continue;
}
option = components.firstObject;
option = [components.firstObject lowercaseString];
arguments = [components objectsInRange:
OFMakeRange(1, components.count - 1)];
if ([option isEqual: @"nameserver"]) {
if (arguments.count != 1) {
objc_autoreleasePoolPop(pool2);
continue;
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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:
for (iter = &fixedInfo->DnsServerList; iter != NULL;
iter = iter->Next) {
OFString *nameServer =
[OFString stringWithCString: iter->IpAddress.String
encoding: encoding]];
encoding: encoding];
if (nameServer.length > 0)
[nameServers addObject: nameServer];
}
if (nameServers.count > 0) {
[nameServers makeImmutable];
_nameServers = [nameServers copy];
}
if (fixedInfo->DomainName[0] != '\0')
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continue;
address = components.firstObject;
hosts = [components objectsInRange:
OFMakeRange(1, components.count - 1)];
for (OFString *host in hosts) {
OFMutableArray *addresses =
[staticHosts objectForKey: host];
OFMutableArray *addresses;
host = host.lowercaseString;
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
#if defined(OF_AMIGAOS_M68K) || defined(OF_AMIGAOS4)
- (bool)obtainRoadshowSystemConfig
{
OFMutableArray *nameServers = [OFMutableArray array];
OFStringEncoding encoding = [OFLocale encoding];
struct List *nameServerList = ObtainDomainNameServerList();
OFMutableArray *nameServers;
OFStringEncoding encoding;
struct List *nameServerList;
char buffer[MAXHOSTNAMELEN];
LONG hasDNSAPI;
if (SocketBaseTags(SBTM_GETREF(SBTC_HAVE_DNS_API), (ULONG)&hasDNSAPI,
TAG_END) != 0 || !hasDNSAPI)
return false;
nameServers = [OFMutableArray array];
encoding = [OFLocale encoding];
nameServerList = ObtainDomainNameServerList();
if (nameServerList == NULL)
@throw [OFOutOfMemoryException exception];
@try {
struct DomainNameServerNode *iter =
(struct DomainNameServerNode *)&nameServerList->lh_Head;
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[nameServers makeImmutable];
_nameServers = [nameServers copy];
}
if (GetDefaultDomainName(buffer, sizeof(buffer)))
_localDomain = [[OFString alloc] initWithCString: buffer
encoding: encoding];
return true;
}
#endif
#ifdef OF_NINTENDO_3DS
- (void)obtainNintendo3DSSytemConfig
{
OFMutableArray *nameServers = [OFMutableArray array];
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_nameServers = [nameServers copy];
}
}
#endif
- (void)reload
{
void *pool;
#ifdef OF_WINDOWS
OFString *path;
OFString *path = nil;
#endif
#if (defined(OF_AMIGAOS_M68K) || defined(OF_AMIGAOS4)) && defined(OF_HAVE_FILES)
OFFileManager *fileManager = [OFFileManager defaultManager];
#endif
void *pool;
/*
* TODO: Rather than reparsing every time, check what actually changed
* (mtime) and only reset those.
*/
if (_lastConfigReload != nil && _configReloadInterval > 0 &&
_lastConfigReload.timeIntervalSinceNow < _configReloadInterval)
return;
pool = objc_autoreleasePoolPush();
[self setDefaults];
#if defined(OF_WINDOWS)
# ifdef OF_HAVE_FILES
@try {
OFWindowsRegistryKey *key = [[OFWindowsRegistryKey localMachineKey]
openSubkeyAtPath: @"SYSTEM\\CurrentControlSet\\Services\\"
@"Tcpip\\Parameters"
accessRights: KEY_QUERY_VALUE
options: 0];
path = [[[key stringForValueNamed: @"DataBasePath"]
stringByAppendingPathComponent: @"hosts"]
stringByExpandingWindowsEnvironmentStrings];
OFWindowsRegistryKey *key;
key = [[OFWindowsRegistryKey localMachineKey]
openSubkeyAtPath: @"SYSTEM\\CurrentControlSet\\Services\\"
@"Tcpip\\Parameters"
accessRights: KEY_QUERY_VALUE
options: 0];
path = [[[key stringForValueNamed: @"DataBasePath"]
stringByAppendingPathComponent: @"hosts"]
stringByExpandingWindowsEnvironmentStrings];
} @catch (OFOpenWindowsRegistryKeyFailedException *e) {
/* Ignore */
} @catch (OFUndefinedKeyException *e) {
/* Ignore */
}
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_AMIGAOS_M68K) || defined(OF_AMIGAOS4)
# ifdef OF_HAVE_FILES
if (![self obtainRoadshowSystemConfig]) {
if (assignExists("AmiTCP"))
/*
* FIXME: The installer puts it there, but theoretically
* it could also be in AmiTCP:db/netdb or any of
* the files included there.
*/
[self parseResolvConf: @"AmiTCP:db/netdb-myhost"];
}
if ([fileManager fileExistsAtPath: @"DEVS:Internet/hosts"])
[self parseHosts: @"DEVS:Internet/hosts"];
else if (assignExists("AmiTCP"))
[self parseHosts: @"AmiTCP:db/hosts"];
# else
[self obtainRoadshowSystemConfig];
# endif
#elif defined(OF_NINTENDO_3DS)
[self obtainNintendo3DSSytemConfig];
#elif defined(OF_HAVE_FILES)
[self parseHosts: HOSTS_PATH];
[self parseResolvConf: RESOLV_CONF_PATH];
#endif
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