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#include <arpa/inet.h>
#include <netdb.h>
#include <sys/types.h>
#include <openssl/rand.h>
#import "XMPPSRVLookup.h"
#import <ObjFW/OFLocalization.h>
#import <ObjFW/OFLocale.h>
OF_ASSUME_NONNULL_BEGIN
@interface XMPPSRVLookup ()
- (void)XMPP_lookup;
- (void)XMPP_addEntry: (XMPPSRVEntry *)item;
@end
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if (dn_expand(ns_msg_base(handle), ns_msg_end(handle),
(uint8_t *)&rdata[3], buffer, NS_MAXDNAME) < 1)
@throw [OFInitializationFailedException
exceptionWithClass: [self class]];
_target = [[OFString alloc]
initWithCString: buffer
encoding: [OFLocalization encoding]];
encoding: [OFLocale encoding]];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
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@try {
int answerLen, resourceRecordCount, i;
ns_rr resourceRecord;
ns_msg handle;
if (res_ninit(&_resState))
@throw [OFAddressTranslationFailedException
exceptionWithHost: _domain];
@throw [OFResolveHostFailedException
exceptionWithHost: _domain
recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
recordType: OF_DNS_RESOURCE_RECORD_TYPE_SRV
error: OF_DNS_RESOLVER_ERROR_UNKNOWN];
answer = [self allocMemoryWithSize: pageSize];
answerLen = res_nsearch(&_resState, [request
cStringWithEncoding: [OFLocalization encoding]],
answerLen = res_nsearch(&_resState,
[request cStringWithEncoding: [OFLocale encoding]],
ns_c_in, ns_t_srv, answer, (int)pageSize);
if ((answerLen == -1) && ((h_errno == HOST_NOT_FOUND) ||
(h_errno == NO_DATA)))
return;
if (answerLen < 1 || answerLen > pageSize)
@throw [OFAddressTranslationFailedException
exceptionWithHost: _domain];
@throw [OFResolveHostFailedException
exceptionWithHost: _domain
recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
recordType: OF_DNS_RESOURCE_RECORD_TYPE_SRV
error: OF_DNS_RESOLVER_ERROR_UNKNOWN];
if (ns_initparse(answer, answerLen, &handle))
@throw [OFAddressTranslationFailedException
exceptionWithHost: _domain];
@throw [OFResolveHostFailedException
exceptionWithHost: _domain
recordClass: OF_DNS_RESOURCE_RECORD_CLASS_IN
recordType: OF_DNS_RESOURCE_RECORD_TYPE_SRV
error: OF_DNS_RESOLVER_ERROR_UNKNOWN];
resourceRecordCount = ns_msg_count(handle, ns_s_an);
for (i = 0; i < resourceRecordCount; i++) {
if (ns_parserr(&handle, ns_s_an, i, &resourceRecord))
continue;
if (ns_rr_type(resourceRecord) != ns_t_srv ||
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