mirror of
https://github.com/gnustep/libs-base.git
synced 2025-06-03 10:00:51 +00:00
Attempt fix for issue #492
This commit is contained in:
rfm
parent
85bda73bbb
commit
a3cf45f3ba
1 changed files with 209 additions and 183 deletions
392
Source/NSHost.m
392
Source/NSHost.m
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@ -28,14 +28,10 @@
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#import "common.h"
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#import "common.h"
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#define EXPOSE_NSHost_IVARS 1
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#define EXPOSE_NSHost_IVARS 1
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#import "Foundation/NSLock.h"
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#import "Foundation/Foundation.h"
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#import "Foundation/NSHost.h"
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#import "Foundation/NSArray.h"
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#import "GSFastEnumeration.h"
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#import "Foundation/NSDictionary.h"
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#import "GNUstepBase/GNUstep.h"
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#import "Foundation/NSEnumerator.h"
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#import "Foundation/NSNull.h"
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#import "Foundation/NSSet.h"
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#import "Foundation/NSCoder.h"
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#if defined(_WIN32)
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#if defined(_WIN32)
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#ifdef HAVE_WS2TCPIP_H
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#ifdef HAVE_WS2TCPIP_H
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@ -54,6 +50,9 @@ extern int WSAAPI inet_pton(int , const char *, void *);
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#include <netinet/in.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <arpa/inet.h>
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#endif /* !_WIN32 */
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#endif /* !_WIN32 */
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#if defined(HAVE_RESOLV_H)
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#include <resolv.h>
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#endif
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#ifndef INADDR_NONE
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#ifndef INADDR_NONE
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#define INADDR_NONE -1
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#define INADDR_NONE -1
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@ -67,17 +66,81 @@ static NSMutableDictionary *_hostCache = nil;
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static id null = nil;
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static id null = nil;
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/*
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* Max hostname length in line with RFC 1123
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*/
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#define GSMAXHOSTNAMELEN 255
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/**
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* Return the current host name ... may change if we are using dhcp etc
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*/
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static NSString*
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myHostName()
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{
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static NSString *name = nil;
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static char old[GSMAXHOSTNAMELEN+1];
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char buf[GSMAXHOSTNAMELEN+1];
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int res;
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[_hostCacheLock lock];
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res = gethostname(buf, GSMAXHOSTNAMELEN);
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if (res < 0 || *buf == '\0')
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{
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NSLog(@"Unable to get name of current host - using 'localhost'");
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ASSIGN(name, @"localhost");
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}
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else if (name == nil || strcmp(old, buf) != 0)
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{
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strncpy(old, buf, sizeof(old) - 1);
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old[sizeof(old) - 1] = '\0';
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RELEASE(name);
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name = [[NSString alloc] initWithCString: buf];
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}
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[_hostCacheLock unlock];
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return name;
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}
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@interface NSHost (Private)
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@interface NSHost (Private)
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+ (void) _cacheHost: (NSHost*)host forKey: (NSString*)key;
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- (void) _addName: (NSString*)name;
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- (void) _addName: (NSString*)name;
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#if defined(HAVE_GETADDRINFO)
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#if defined(HAVE_GETADDRINFO) && defined(HAVE_RESOLV_H)
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- (id) _initWithAddrinfo: (struct addrinfo*)entry key: (NSString*)name;
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- (id) _initWithKey: (NSString*)key;
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#endif
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#else
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- (id) _initWithHostEntry: (struct hostent*)entry key: (NSString*)name;
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- (id) _initWithHostEntry: (struct hostent*)entry key: (NSString*)name;
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#endif
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+ (NSMutableSet*) _localAddresses;
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+ (NSMutableSet*) _localAddresses;
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@end
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@end
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@implementation NSHost (Private)
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@implementation NSHost (Private)
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+ (void) _cacheHost: (NSHost*)host forKey: (NSString*)key
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{
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NSAssert(nil == host || [host isKindOfClass: [NSHost class]],
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NSInvalidArgumentException);
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NSAssert([key isKindOfClass: [NSString class]], NSInvalidArgumentException);
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[_hostCacheLock lock];
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if (host)
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{
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FOR_IN (id, name, host->_names)
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[_hostCache setObject: host forKey: name];
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END_FOR_IN (host->_names)
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FOR_IN (id, address, host->_addresses)
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[_hostCache setObject: host forKey: address];
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END_FOR_IN (host->_addresses)
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[_hostCache setObject: host forKey: key];
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}
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else
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{
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[_hostCache setObject: [NSNull null] forKey: key];
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NSLog(@"Host '%@' not found - "
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@"perhaps the hostname is wrong or networking is not "
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@"set up on your machine", key);
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}
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[_hostCacheLock unlock];
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}
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- (void) _addName: (NSString*)name
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- (void) _addName: (NSString*)name
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{
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{
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NSMutableSet *s = [_names mutableCopy];
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NSMutableSet *s = [_names mutableCopy];
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@ -110,123 +173,128 @@ static id null = nil;
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return self;
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return self;
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}
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}
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#if defined(HAVE_GETADDRINFO)
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#if defined(HAVE_GETADDRINFO) && defined(HAVE_RESOLV_H)
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- (id) _initWithAddrinfo: (struct addrinfo*)entry key: (NSString*)name
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- (id) _initWithKey: (NSString*)key
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{
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{
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NSMutableSet *names;
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ENTER_POOL
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NSMutableSet *addresses;
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const char *ptr = [key UTF8String];
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NSMutableSet *extra;
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NSMutableSet *names = [NSMutableSet setWithCapacity: 8];
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NSMutableSet *addresses = [NSMutableSet setWithCapacity: 8];
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struct addrinfo *entry;
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struct addrinfo hints;
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struct addrinfo *tmp;
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int err;
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if ((self = [super init]) == nil)
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memset(&hints, '\0', sizeof(hints));
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hints.ai_flags = AI_CANONNAME;
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hints.ai_family = AF_UNSPEC;
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if ([key isEqualToString: myHostName()])
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{
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{
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return nil;
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[addresses addObject: @"127.0.0.1"];
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[names addObject: @"localhost"];
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}
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}
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if ([name isEqualToString: localHostName] == NO
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else if ([key isEqualToString: localHostName])
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&& entry == (struct addrinfo*)NULL)
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{
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{
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NSLog(@"Host '%@' init failed - perhaps the name/address is wrong or "
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ptr = "127.0.0.1";
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@"networking is not set up on your machine", name);
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DESTROY(self);
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return nil;
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}
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else if (name == nil && entry != (struct addrinfo*)NULL)
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{
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NSLog(@"Nil hostname supplied but network database entry is not empty");
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DESTROY(self);
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return nil;
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}
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}
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names = [NSMutableSet new];
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err = getaddrinfo(ptr, 0, &hints, &entry);
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addresses = [NSMutableSet new];
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if (err)
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if ([name isEqualToString: localHostName] == YES)
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{
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{
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extra = [hostClass _localAddresses];
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fprintf(stderr, "getaddrinfo failed: %s\n", gai_strerror(err));
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entry = NULL;
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}
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for (tmp = entry; tmp != NULL; tmp = tmp->ai_next)
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{
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char ipstr[INET6_ADDRSTRLEN];
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void *addr;
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wcast-align"
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if (AF_INET == tmp->ai_family)
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{
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struct sockaddr_in *ipv4 = (struct sockaddr_in *)(tmp->ai_addr);
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addr = &(ipv4->sin_addr);
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}
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else if (AF_INET6 == tmp->ai_family)
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{
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struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)tmp->ai_addr;
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addr = &(ipv6->sin6_addr);
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}
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else
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{
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continue; // Unsupported family
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}
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#pragma clang diagnostic pop
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inet_ntop(tmp->ai_family, addr, ipstr, sizeof(ipstr));
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[addresses addObject: [NSString stringWithUTF8String: ipstr]];
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if (tmp->ai_canonname && *tmp->ai_canonname)
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{
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unsigned char response[NS_PACKETSZ];
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ns_msg msg;
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int count;
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int len;
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int i;
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NSString *n;
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n = [NSString stringWithUTF8String: tmp->ai_canonname];
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[names addObject: n];
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/* Perform DNS query for CNAME record (type CNAME = 5)
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*/
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len = res_query(tmp->ai_canonname, ns_c_in, ns_t_cname,
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response, sizeof(response));
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if (len < 0)
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{
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perror("res_query");
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continue;
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}
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ns_initparse(response, len, &msg);
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count = ns_msg_count(msg, ns_s_an);
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for (i = 0; i < count; i++)
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{
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ns_rr rr;
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ns_parserr(&msg, ns_s_an, i, &rr);
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// Check if the record is a CNAME
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if (ns_rr_type(rr) == ns_t_cname)
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{
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char cname[NS_MAXDNAME];
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if (ns_name_uncompress(ns_msg_base(msg), ns_msg_end(msg),
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ns_rr_rdata(rr), cname, sizeof(cname)) < 0)
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{
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fprintf(stderr, "Failed to uncompress CNAME\n");
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continue;
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}
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[names addObject: [NSString stringWithUTF8String: cname]];
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}
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}
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}
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}
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if (entry)
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{
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freeaddrinfo(entry);
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}
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if ([names count] || [addresses count])
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{
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_names = [names copy];
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_addresses = [addresses copy];
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}
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}
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else
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else
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{
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{
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extra = nil;
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DESTROY(self);
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}
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}
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LEAVE_POOL
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for (;;)
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{
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struct addrinfo *tmp;
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/*
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* We remove all the IP addresses that we have added to the host so
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* far from the set of extra addresses available on the current host.
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* Then we try to find a new network database entry for one of the
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* remaining extra addresses, and loop round to add all the names
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* and addresses for that entry.
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*/
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[extra minusSet: addresses];
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while (entry == 0 && [extra count] > 0)
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{
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NSString *a = [extra anyObject];
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struct addrinfo hints;
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memset(&hints, '\0', sizeof(hints));
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hints.ai_flags = AI_CANONNAME;
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if (getaddrinfo([a UTF8String], 0, &hints, &entry) != 0)
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{
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/*
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* Can't find a database entry for this IP address, but since
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* we know the address is valid, we add it to the list of
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* addresses for this host anyway.
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*/
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[addresses addObject: a];
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[extra removeObject: a];
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}
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}
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if (0 == entry)
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{
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break;
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}
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for (tmp = entry; tmp != 0; tmp = tmp->ai_next)
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{
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if (tmp->ai_canonname && *tmp->ai_canonname)
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{
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NSString *n;
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n = [[NSString alloc] initWithUTF8String: tmp->ai_canonname];
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[names addObject: n];
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[n release];
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}
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if (tmp->ai_addrlen > 0)
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{
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char host[NI_MAXHOST];
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char port[NI_MAXSERV];
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if (0 == getnameinfo(tmp->ai_addr, tmp->ai_addrlen,
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host, NI_MAXHOST, port, NI_MAXSERV, NI_NUMERICSERV))
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{
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NSString *a;
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a = [[NSString alloc] initWithUTF8String: host];
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[addresses addObject: a];
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[a release];
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}
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}
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}
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freeaddrinfo(entry);
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entry = 0;
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}
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_names = [names copy];
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RELEASE(names);
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_addresses = [addresses copy];
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RELEASE(addresses);
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if (YES == _hostCacheEnabled)
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{
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[_hostCache setObject: self forKey: name];
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}
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return self;
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return self;
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}
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}
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#endif
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#else
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|
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- (id) _initWithHostEntry: (struct hostent*)entry key: (NSString*)name
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- (id) _initWithHostEntry: (struct hostent*)entry key: (NSString*)name
|
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{
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{
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|
|
@ -340,6 +408,8 @@ static id null = nil;
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return self;
|
return self;
|
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}
|
}
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|
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#endif
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|
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+ (NSMutableSet*) _localAddresses
|
+ (NSMutableSet*) _localAddresses
|
||||||
{
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{
|
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NSMutableSet *set;
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NSMutableSet *set;
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|
@ -352,40 +422,6 @@ static id null = nil;
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|
|
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@implementation NSHost
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@implementation NSHost
|
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|
|
||||||
/*
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|
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* Max hostname length in line with RFC 1123
|
|
||||||
*/
|
|
||||||
#define GSMAXHOSTNAMELEN 255
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|
||||||
|
|
||||||
/**
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|
||||||
* Return the current host name ... may change if we are using dhcp etc
|
|
||||||
*/
|
|
||||||
static NSString*
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|
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myHostName()
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|
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{
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|
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static NSString *name = nil;
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|
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static char old[GSMAXHOSTNAMELEN+1];
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|
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char buf[GSMAXHOSTNAMELEN+1];
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|
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int res;
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|
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|
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[_hostCacheLock lock];
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|
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res = gethostname(buf, GSMAXHOSTNAMELEN);
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|
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if (res < 0 || *buf == '\0')
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|
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{
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|
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NSLog(@"Unable to get name of current host - using 'localhost'");
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ASSIGN(name, @"localhost");
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|
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}
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|
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else if (name == nil || strcmp(old, buf) != 0)
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|
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{
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|
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strncpy(old, buf, sizeof(old) - 1);
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|
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old[sizeof(old) - 1] = '\0';
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|
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RELEASE(name);
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|
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name = [[NSString alloc] initWithCString: buf];
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|
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}
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|
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[_hostCacheLock unlock];
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|
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return name;
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|
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}
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|
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|
|
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+ (void) initialize
|
+ (void) initialize
|
||||||
{
|
{
|
||||||
if (self == [NSHost class])
|
if (self == [NSHost class])
|
||||||
|
|
@ -431,21 +467,24 @@ myHostName()
|
||||||
return [self hostWithAddress: name];
|
return [self hostWithAddress: name];
|
||||||
}
|
}
|
||||||
|
|
||||||
[_hostCacheLock lock];
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|
||||||
if (YES == _hostCacheEnabled)
|
if (YES == _hostCacheEnabled)
|
||||||
{
|
{
|
||||||
host = [_hostCache objectForKey: name];
|
[_hostCacheLock lock];
|
||||||
|
host = RETAIN([_hostCache objectForKey: name]);
|
||||||
|
[_hostCacheLock unlock];
|
||||||
}
|
}
|
||||||
if (host == nil)
|
if (nil == host)
|
||||||
{
|
{
|
||||||
|
#if defined(HAVE_GETADDRINFO) && defined(HAVE_RESOLV_H)
|
||||||
|
host = [[self alloc] _initWithKey: name];
|
||||||
|
#else
|
||||||
|
|
||||||
if ([name isEqualToString: localHostName] == YES)
|
if ([name isEqualToString: localHostName] == YES)
|
||||||
{
|
{
|
||||||
/*
|
/* Special GNUstep extension host - we try to have a host entry
|
||||||
* Special GNUstep extension host - we try to have a host entry
|
|
||||||
* with ALL the IP addresses of any interfaces on the local machine
|
* with ALL the IP addresses of any interfaces on the local machine
|
||||||
*/
|
*/
|
||||||
host = [[self alloc] _initWithHostEntry: 0 key: localHostName];
|
host = [[self alloc] _initWithHostEntry: 0 key: localHostName];
|
||||||
IF_NO_ARC([host autorelease];)
|
|
||||||
}
|
}
|
||||||
else
|
else
|
||||||
{
|
{
|
||||||
|
|
@ -456,37 +495,22 @@ myHostName()
|
||||||
{
|
{
|
||||||
if ([name isEqualToString: myHostName()] == YES)
|
if ([name isEqualToString: myHostName()] == YES)
|
||||||
{
|
{
|
||||||
host = [self hostWithAddress: @"127.0.0.1"];
|
host = RETAIN([self hostWithAddress: @"127.0.0.1"]);
|
||||||
[host _addName: name];
|
[host _addName: name];
|
||||||
}
|
}
|
||||||
else
|
|
||||||
{
|
|
||||||
if (YES == _hostCacheEnabled)
|
|
||||||
{
|
|
||||||
[_hostCache setObject: null forKey: name];
|
|
||||||
}
|
|
||||||
NSLog(@"Host '%@' not found using 'gethostbyname()' - "
|
|
||||||
@"perhaps the hostname is wrong or networking is not "
|
|
||||||
@"set up on your machine", name);
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
else
|
else
|
||||||
{
|
{
|
||||||
host = [[self alloc] _initWithHostEntry: h key: name];
|
host = [[self alloc] _initWithHostEntry: h key: name];
|
||||||
IF_NO_ARC([host autorelease];)
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
else if ((id)host == null)
|
if (_hostCacheEnabled)
|
||||||
{
|
{
|
||||||
host = nil;
|
[self _cacheHost: host forKey: name];
|
||||||
}
|
}
|
||||||
else
|
return AUTORELEASE(host);
|
||||||
{
|
|
||||||
IF_NO_ARC([[host retain] autorelease];)
|
|
||||||
}
|
|
||||||
[_hostCacheLock unlock];
|
|
||||||
return host;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
+ (NSHost*) hostWithAddress: (NSString*)address
|
+ (NSHost*) hostWithAddress: (NSString*)address
|
||||||
|
|
@ -542,13 +566,17 @@ myHostName()
|
||||||
return nil;
|
return nil;
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
[_hostCacheLock lock];
|
|
||||||
if (YES == _hostCacheEnabled)
|
if (YES == _hostCacheEnabled)
|
||||||
{
|
{
|
||||||
host = [_hostCache objectForKey: address];
|
[_hostCacheLock lock];
|
||||||
|
host = RETAIN([_hostCache objectForKey: address]);
|
||||||
|
[_hostCacheLock unlock];
|
||||||
}
|
}
|
||||||
if (nil == host)
|
if (nil == host)
|
||||||
{
|
{
|
||||||
|
#if defined(HAVE_GETADDRINFO) && defined(HAVE_RESOLV_H)
|
||||||
|
host = [[self alloc] _initWithKey: address];
|
||||||
|
#else
|
||||||
struct hostent *h;
|
struct hostent *h;
|
||||||
|
|
||||||
/* The gethostbyname() function should handle names, ipv4 addresses,
|
/* The gethostbyname() function should handle names, ipv4 addresses,
|
||||||
|
|
@ -558,20 +586,18 @@ myHostName()
|
||||||
if (0 == h)
|
if (0 == h)
|
||||||
{
|
{
|
||||||
host = [[self alloc] _initWithAddress: address];
|
host = [[self alloc] _initWithAddress: address];
|
||||||
IF_NO_ARC([host autorelease];)
|
|
||||||
}
|
}
|
||||||
else
|
else
|
||||||
{
|
{
|
||||||
host = [[self alloc] _initWithHostEntry: h key: address];
|
host = [[self alloc] _initWithHostEntry: h key: address];
|
||||||
IF_NO_ARC([host autorelease];)
|
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
else
|
if (_hostCacheEnabled)
|
||||||
{
|
{
|
||||||
IF_NO_ARC([[host retain] autorelease];)
|
[self _cacheHost: host forKey: address];
|
||||||
}
|
}
|
||||||
[_hostCacheLock unlock];
|
return AUTORELEASE(host);
|
||||||
return host;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
+ (void) setHostCacheEnabled: (BOOL)flag
|
+ (void) setHostCacheEnabled: (BOOL)flag
|
||||||
|
|
@ -593,7 +619,7 @@ myHostName()
|
||||||
[_hostCacheLock unlock];
|
[_hostCacheLock unlock];
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Methods for encoding/decoding*/
|
/* Methods for encoding/decoding */
|
||||||
|
|
||||||
- (id) replacementObjectForPortCoder: (NSPortCoder*)aCoder
|
- (id) replacementObjectForPortCoder: (NSPortCoder*)aCoder
|
||||||
{
|
{
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue