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} while (componentLength > 0);
*idx = i;
return [components componentsJoinedByString: @"."];
}
static OFString *
parseAAAAData(const unsigned char *buffer)
{
OFMutableString *data = [OFMutableString string];
int_fast8_t zerosStart = -1, maxZerosStart = -1;
uint_fast8_t zerosCount = 0, maxZerosCount = 0;
bool first = true;
for (uint_fast8_t i = 0; i < 16; i += 2) {
if (buffer[i] == 0 && buffer[i + 1] == 0) {
if (zerosStart >= 0)
zerosCount++;
else {
zerosStart = i;
zerosCount = 1;
}
} else {
if (zerosCount > maxZerosCount) {
maxZerosStart = zerosStart;
maxZerosCount = zerosCount;
}
zerosStart = -1;
}
}
if (zerosCount > maxZerosCount) {
maxZerosStart = zerosStart;
maxZerosCount = zerosCount;
}
if (maxZerosCount >= 2) {
for (uint_fast8_t i = 0; i < maxZerosStart; i += 2) {
[data appendFormat: (first ? @"%x" : @":%x"),
(buffer[i] << 8) | buffer[i + 1]];
first = false;
}
[data appendString: @"::"];
first = true;
for (uint_fast8_t i = maxZerosStart + (maxZerosCount * 2);
i < 16; i += 2) {
[data appendFormat: (first ? @"%x" : @":%x"),
(buffer[i] << 8) | buffer[i + 1]];
first = false;
}
} else {
for (uint_fast8_t i = 0; i < 16; i += 2) {
[data appendFormat: (first ? @"%x" : @":%x"),
(buffer[i] << 8) | buffer[i + 1]];
first = false;
}
}
[data makeImmutable];
return data;
}
static OF_KINDOF(OFDNSResourceRecord *)
createResourceRecord(OFString *name, of_dns_resource_record_class_t recordClass,
of_dns_resource_record_type_t recordType, uint32_t TTL,
const unsigned char *buffer, size_t length, size_t i, uint16_t dataLength)
{
if (recordType == OF_DNS_RESOURCE_RECORD_TYPE_A &&
recordClass == OF_DNS_RESOURCE_RECORD_CLASS_IN) {
OFString *address;
of_socket_address_t address;
if (dataLength != 4)
@throw [OFInvalidServerReplyException exception];
address = [OFString stringWithFormat: @"%u.%u.%u.%u",
buffer[i], buffer[i + 1], buffer[i + 2], buffer[i + 3]];
memset(&address, 0, sizeof(address));
address.family = OF_SOCKET_ADDRESS_FAMILY_IPV4;
address.length = sizeof(address.sockaddr.in);
address.sockaddr.in.sin_family = AF_INET;
memcpy(&address.sockaddr.in.sin_addr.s_addr, buffer + i, 4);
return [[[OFADNSResourceRecord alloc]
initWithName: name
address: address
address: &address
TTL: TTL] autorelease];
} else if (recordType == OF_DNS_RESOURCE_RECORD_TYPE_NS) {
size_t j = i;
OFString *authoritativeHost = parseName(buffer, length, &j,
MAX_ALLOWED_POINTERS);
if (j != i + dataLength)
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initWithName: name
recordClass: recordClass
mailbox: mailbox
TXTDomainName: TXTDomainName
TTL: TTL] autorelease];
} else if (recordType == OF_DNS_RESOURCE_RECORD_TYPE_AAAA &&
recordClass == OF_DNS_RESOURCE_RECORD_CLASS_IN) {
OFString *address;
of_socket_address_t address;
if (dataLength != 16)
@throw [OFInvalidServerReplyException
exception];
@throw [OFInvalidServerReplyException exception];
memset(&address, 0, sizeof(address));
address.family = OF_SOCKET_ADDRESS_FAMILY_IPV6;
address.length = sizeof(address.sockaddr.in6);
#ifdef AF_INET6
address = parseAAAAData(&buffer[i]);
address.sockaddr.in6.sin6_family = AF_INET6;
#else
address.sockaddr.in6.sin6_family = AF_UNSPEC;
#endif
memcpy(address.sockaddr.in6.sin6_addr.s6_addr, buffer + i, 16);
return [[[OFAAAADNSResourceRecord alloc]
initWithName: name
address: address
address: &address
TTL: TTL] autorelease];
} else if (recordType == OF_DNS_RESOURCE_RECORD_TYPE_SRV &&
recordClass == OF_DNS_RESOURCE_RECORD_CLASS_IN) {
uint16_t priority, weight, port;
size_t j;
OFString *target;
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