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#include <netdb.h>
#include <sys/types.h>
#include <openssl/rand.h>
#import "XMPPSRVLookup.h"
#import <ObjFW/OFLocalization.h>
OF_ASSUME_NONNULL_BEGIN
@interface XMPPSRVLookup ()
- (void)XMPP_lookup;
- (void)XMPP_addEntry: (XMPPSRVEntry *)item;
@end
OF_ASSUME_NONNULL_END
@implementation XMPPSRVEntry
@synthesize priority = _priority, weight = _weight;
@synthesize accumulatedWeight = _accumulatedWeight, port = _port;
@synthesize target = _target;
+ (instancetype)entryWithPriority: (uint16_t)priority
weight: (uint16_t)weight
port: (uint16_t)port
target: (OFString*)target
target: (OFString *)target
{
return [[[self alloc] initWithPriority: priority
weight: weight
port: port
target: target] autorelease];
}
+ (instancetype)entryWithResourceRecord: (ns_rr)resourceRecord
handle: (ns_msg)handle
{
return [[[self alloc] initWithResourceRecord: resourceRecord
handle: handle] autorelease];
}
- init
{
@try {
[self doesNotRecognizeSelector: _cmd];
} @catch (id e) {
[self release];
@throw e;
}
abort();
target: (OFString*)target
target: (OFString *)target
{
self = [super init];
@try {
_priority = priority;
_weight = weight;
_port = port;
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{
self = [super init];
@try {
const uint16_t *rdata;
char buffer[NS_MAXDNAME];
rdata = (const uint16_t*)(void*)ns_rr_rdata(resourceRecord);
rdata = (const uint16_t *)(void *)ns_rr_rdata(resourceRecord);
_priority = ntohs(rdata[0]);
_weight = ntohs(rdata[1]);
_port = ntohs(rdata[2]);
if (dn_expand(ns_msg_base(handle), ns_msg_end(handle),
(uint8_t*)&rdata[3], buffer, NS_MAXDNAME) < 1)
(uint8_t *)&rdata[3], buffer, NS_MAXDNAME) < 1)
@throw [OFInitializationFailedException
exceptionWithClass: [self class]];
_target = [[OFString alloc]
initWithCString: buffer
encoding: [OFLocalization encoding]];
} @catch (id e) {
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- (void)dealloc
{
[_target release];
[super dealloc];
}
- (OFString*)description
- (OFString *)description
{
return [OFString stringWithFormat:
@"<%@ priority: %" PRIu16 @", weight: %" PRIu16 @", target: %@:%"
PRIu16 @">", [self class], _priority, _weight, _target, _port];
}
@end
@implementation XMPPSRVLookup
@synthesize domain = _domain;
+ (instancetype)lookupWithDomain: (OFString*)domain
+ (instancetype)lookupWithDomain: (OFString *)domain
{
return [[[self alloc] initWithDomain: domain] autorelease];
}
- init
{
OF_INVALID_INIT_METHOD
}
- initWithDomain: (OFString*)domain
- initWithDomain: (OFString *)domain
{
self = [super init];
@try {
_list = [[OFList alloc] init];
_domain = [domain copy];
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res_ndestroy(&_resState);
#endif
}
[pool release];
}
- (void)XMPP_addEntry: (XMPPSRVEntry*)entry
- (void)XMPP_addEntry: (XMPPSRVEntry *)entry
{
OFAutoreleasePool *pool;
OFList *subList;
of_list_object_t *iter;
/* Look if there already is a list with the priority */
for (iter = [_list firstListObject]; iter != NULL; iter = iter->next) {
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beforeListObject: iter];
else
[_list appendObject: subList];
[pool release];
}
- (OFEnumerator*)objectEnumerator
- (OFEnumerator *)objectEnumerator
{
return [[[XMPPSRVEnumerator alloc] initWithList: _list] autorelease];
}
@end
@implementation XMPPSRVEnumerator
- init
{
OF_INVALID_INIT_METHOD
}
- initWithList: (OFList*)list
- initWithList: (OFList *)list
{
self = [super init];
@try {
_list = [list copy];
} @catch (id e) {
[self release];
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totalWeight += [iter->object weight];
[iter->object setAccumulatedWeight: totalWeight];
}
if ([_subListCopy count] > 0) {
uint32_t randomWeight;
RAND_pseudo_bytes((uint8_t*)&randomWeight, sizeof(uint32_t));
RAND_pseudo_bytes((uint8_t *)&randomWeight, sizeof(uint32_t));
randomWeight %= (totalWeight + 1);
for (iter = [_subListCopy firstListObject]; iter != NULL;
iter = iter->next) {
if ([iter->object accumulatedWeight] >= randomWeight) {
ret = [[iter->object retain] autorelease];
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