ObjFW  Diff

Annotate Patch Unified Diff

Differences From Artifact [6722a88381]:

To Artifact [982d647b8f]:

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#import "OFUDPSocket.h"
#import "OFUDPSocket+Private.h"

#import "OFDNSQueryFailedException.h"
#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFInvalidServerReplyException.h"
#import "OFNotImplementedException.h"
#import "OFOutOfRangeException.h"
#import "OFTruncatedDataException.h"

#ifndef SOCK_DNS
# define SOCK_DNS 0
#endif








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#import "OFUDPSocket.h"
#import "OFUDPSocket+Private.h"

#import "OFDNSQueryFailedException.h"
#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFInvalidServerResponseException.h"
#import "OFNotImplementedException.h"
#import "OFOutOfRangeException.h"
#import "OFTruncatedDataException.h"

#ifndef SOCK_DNS
# define SOCK_DNS 0
#endif
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		componentLength = buffer[(*i)++];

		if (componentLength & 0xC0) {
			size_t j;
			OFString *suffix;

			if (pointerLevel == 0)
				@throw [OFInvalidServerReplyException
				    exception];

			if (*i >= length)
				@throw [OFTruncatedDataException exception];

			j = ((componentLength & 0x3F) << 8) | buffer[(*i)++];

			if (j == *i - 2)
				/* Pointing to itself?! */
				@throw [OFInvalidServerReplyException
				    exception];

			suffix = parseName(buffer, length, &j,
			    pointerLevel - 1);

			if (components.count == 0)
				return suffix;








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		componentLength = buffer[(*i)++];

		if (componentLength & 0xC0) {
			size_t j;
			OFString *suffix;

			if (pointerLevel == 0)
				@throw [OFInvalidServerResponseException
				    exception];

			if (*i >= length)
				@throw [OFTruncatedDataException exception];

			j = ((componentLength & 0x3F) << 8) | buffer[(*i)++];

			if (j == *i - 2)
				/* Pointing to itself?! */
				@throw [OFInvalidServerResponseException
				    exception];

			suffix = parseName(buffer, length, &j,
			    pointerLevel - 1);

			if (components.count == 0)
				return suffix;
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    OFDNSRecordType recordType, uint32_t TTL, const unsigned char *buffer,
    size_t length, size_t i, uint16_t dataLength)
{
	if (recordType == OFDNSRecordTypeA && DNSClass == OFDNSClassIN) {
		OFSocketAddress address;

		if (dataLength != 4)
			@throw [OFInvalidServerReplyException exception];

		memset(&address, 0, sizeof(address));
		address.family = OFSocketAddressFamilyIPv4;
		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
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeNS) {
		size_t j = i;
		OFString *authoritativeHost = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		return [[[OFNSDNSResourceRecord alloc]
			 initWithName: name
			     DNSClass: DNSClass
		    authoritativeHost: authoritativeHost
				  TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeCNAME) {
		size_t j = i;
		OFString *alias = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		return [[[OFCNAMEDNSResourceRecord alloc]
		    initWithName: name
			DNSClass: DNSClass
			   alias: alias
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeSOA) {
		size_t j = i;
		OFString *primaryNameServer = parseName(buffer, length, &j,
		    maxAllowedPointers);
		OFString *responsiblePerson;
		uint32_t serialNumber, refreshInterval, retryInterval;
		uint32_t expirationInterval, minTTL;

		if (j > i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		responsiblePerson = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (dataLength - (j - i) != 20)
			@throw [OFInvalidServerReplyException exception];

		serialNumber = (buffer[j] << 24) | (buffer[j + 1] << 16) |
		    (buffer[j + 2] << 8) | buffer[j + 3];
		refreshInterval = (buffer[j + 4] << 24) |
		    (buffer[j + 5] << 16) | (buffer[j + 6] << 8) |
		    buffer[j + 7];
		retryInterval = (buffer[j + 8] << 24) | (buffer[j + 9] << 16) |








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    OFDNSRecordType recordType, uint32_t TTL, const unsigned char *buffer,
    size_t length, size_t i, uint16_t dataLength)
{
	if (recordType == OFDNSRecordTypeA && DNSClass == OFDNSClassIN) {
		OFSocketAddress address;

		if (dataLength != 4)
			@throw [OFInvalidServerResponseException exception];

		memset(&address, 0, sizeof(address));
		address.family = OFSocketAddressFamilyIPv4;
		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
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeNS) {
		size_t j = i;
		OFString *authoritativeHost = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		return [[[OFNSDNSResourceRecord alloc]
			 initWithName: name
			     DNSClass: DNSClass
		    authoritativeHost: authoritativeHost
				  TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeCNAME) {
		size_t j = i;
		OFString *alias = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		return [[[OFCNAMEDNSResourceRecord alloc]
		    initWithName: name
			DNSClass: DNSClass
			   alias: alias
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeSOA) {
		size_t j = i;
		OFString *primaryNameServer = parseName(buffer, length, &j,
		    maxAllowedPointers);
		OFString *responsiblePerson;
		uint32_t serialNumber, refreshInterval, retryInterval;
		uint32_t expirationInterval, minTTL;

		if (j > i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		responsiblePerson = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (dataLength - (j - i) != 20)
			@throw [OFInvalidServerResponseException exception];

		serialNumber = (buffer[j] << 24) | (buffer[j + 1] << 16) |
		    (buffer[j + 2] << 8) | buffer[j + 3];
		refreshInterval = (buffer[j + 4] << 24) |
		    (buffer[j + 5] << 16) | (buffer[j + 6] << 8) |
		    buffer[j + 7];
		retryInterval = (buffer[j + 8] << 24) | (buffer[j + 9] << 16) |
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				   TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypePTR) {
		size_t j = i;
		OFString *domainName = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		return [[[OFPTRDNSResourceRecord alloc]
		    initWithName: name
			DNSClass: DNSClass
		      domainName: domainName
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeHINFO) {
		size_t j = i;
		OFString *CPU = parseString(buffer, length, &j);
		OFString *OS;

		if (j > i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		OS = parseString(buffer, length, &j);

		if (j != i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		return [[[OFHINFODNSResourceRecord alloc]
		    initWithName: name
			DNSClass: DNSClass
			     CPU: CPU
			      OS: OS
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeMX) {
		uint16_t preference;
		size_t j;
		OFString *mailExchange;

		if (dataLength < 2)
			@throw [OFInvalidServerReplyException exception];

		preference = (buffer[i] << 8) | buffer[i + 1];

		j = i + 2;
		mailExchange = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		return [[[OFMXDNSResourceRecord alloc]
		    initWithName: name
			DNSClass: DNSClass
		      preference: preference
		    mailExchange: mailExchange
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeTXT) {
		OFMutableArray *textStrings = [OFMutableArray array];

		while (dataLength > 0) {
			uint_fast8_t stringLength = buffer[i++];
			dataLength--;

			if (stringLength > dataLength)
				@throw [OFInvalidServerReplyException
				    exception];

			[textStrings addObject:
			    [OFData dataWithItems: buffer + i
					    count: stringLength]];

			i += stringLength;








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				   TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypePTR) {
		size_t j = i;
		OFString *domainName = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		return [[[OFPTRDNSResourceRecord alloc]
		    initWithName: name
			DNSClass: DNSClass
		      domainName: domainName
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeHINFO) {
		size_t j = i;
		OFString *CPU = parseString(buffer, length, &j);
		OFString *OS;

		if (j > i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		OS = parseString(buffer, length, &j);

		if (j != i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		return [[[OFHINFODNSResourceRecord alloc]
		    initWithName: name
			DNSClass: DNSClass
			     CPU: CPU
			      OS: OS
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeMX) {
		uint16_t preference;
		size_t j;
		OFString *mailExchange;

		if (dataLength < 2)
			@throw [OFInvalidServerResponseException exception];

		preference = (buffer[i] << 8) | buffer[i + 1];

		j = i + 2;
		mailExchange = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		return [[[OFMXDNSResourceRecord alloc]
		    initWithName: name
			DNSClass: DNSClass
		      preference: preference
		    mailExchange: mailExchange
			     TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeTXT) {
		OFMutableArray *textStrings = [OFMutableArray array];

		while (dataLength > 0) {
			uint_fast8_t stringLength = buffer[i++];
			dataLength--;

			if (stringLength > dataLength)
				@throw [OFInvalidServerResponseException
				    exception];

			[textStrings addObject:
			    [OFData dataWithItems: buffer + i
					    count: stringLength]];

			i += stringLength;
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	} else if (recordType == OFDNSRecordTypeRP) {
		size_t j = i;
		OFString *mailbox = parseName(buffer, length, &j,
		    maxAllowedPointers);
		OFString *TXTDomainName;

		if (j > i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		TXTDomainName = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		return [[[OFRPDNSResourceRecord alloc]
		     initWithName: name
			 DNSClass: DNSClass
			  mailbox: mailbox
		    TXTDomainName: TXTDomainName
			      TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeAAAA &&
	    DNSClass == OFDNSClassIN) {
		OFSocketAddress address;

		if (dataLength != 16)
			@throw [OFInvalidServerReplyException exception];

		memset(&address, 0, sizeof(address));
		address.family = OFSocketAddressFamilyIPv6;
		address.length = sizeof(address.sockaddr.in6);

#ifdef AF_INET6
		address.sockaddr.in6.sin6_family = AF_INET6;








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	} else if (recordType == OFDNSRecordTypeRP) {
		size_t j = i;
		OFString *mailbox = parseName(buffer, length, &j,
		    maxAllowedPointers);
		OFString *TXTDomainName;

		if (j > i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		TXTDomainName = parseName(buffer, length, &j,
		    maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		return [[[OFRPDNSResourceRecord alloc]
		     initWithName: name
			 DNSClass: DNSClass
			  mailbox: mailbox
		    TXTDomainName: TXTDomainName
			      TTL: TTL] autorelease];
	} else if (recordType == OFDNSRecordTypeAAAA &&
	    DNSClass == OFDNSClassIN) {
		OFSocketAddress address;

		if (dataLength != 16)
			@throw [OFInvalidServerResponseException exception];

		memset(&address, 0, sizeof(address));
		address.family = OFSocketAddressFamilyIPv6;
		address.length = sizeof(address.sockaddr.in6);

#ifdef AF_INET6
		address.sockaddr.in6.sin6_family = AF_INET6;
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	} else if (recordType == OFDNSRecordTypeSRV &&
	    DNSClass == OFDNSClassIN) {
		uint16_t priority, weight, port;
		size_t j;
		OFString *target;

		if (dataLength < 6)
			@throw [OFInvalidServerReplyException exception];

		priority = (buffer[i] << 8) | buffer[i + 1];
		weight = (buffer[i + 2] << 8) | buffer[i + 3];
		port = (buffer[i + 4] << 8) | buffer[i + 5];

		j = i + 6;
		target = parseName(buffer, length, &j, maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerReplyException exception];

		return [[[OFSRVDNSResourceRecord alloc]
		    initWithName: name
			priority: priority
			  weight: weight
			  target: target
			    port: port








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	} else if (recordType == OFDNSRecordTypeSRV &&
	    DNSClass == OFDNSClassIN) {
		uint16_t priority, weight, port;
		size_t j;
		OFString *target;

		if (dataLength < 6)
			@throw [OFInvalidServerResponseException exception];

		priority = (buffer[i] << 8) | buffer[i + 1];
		weight = (buffer[i + 2] << 8) | buffer[i + 3];
		port = (buffer[i + 4] << 8) | buffer[i + 5];

		j = i + 6;
		target = parseName(buffer, length, &j, maxAllowedPointers);

		if (j != i + dataLength)
			@throw [OFInvalidServerResponseException exception];

		return [[[OFSRVDNSResourceRecord alloc]
		    initWithName: name
			priority: priority
			  weight: weight
			  target: target
			    port: port
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		    context->_queryData.count < 12)
			@throw [OFInvalidArgumentException exception];

		queryDataBuffer = context->_queryData.items;

		/* QR */
		if ((buffer[2] & 0x80) == 0)
			@throw [OFInvalidServerReplyException exception];

		/* Opcode */
		if ((buffer[2] & 0x78) != (queryDataBuffer[2] & 0x78))
			@throw [OFInvalidServerReplyException exception];

		/* TC */
		if (buffer[2] & 0x02) {
			OFRunLoopMode runLoopMode;

			if (context->_settings->_usesTCP)
				@throw [OFTruncatedDataException exception];








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		    context->_queryData.count < 12)
			@throw [OFInvalidArgumentException exception];

		queryDataBuffer = context->_queryData.items;

		/* QR */
		if ((buffer[2] & 0x80) == 0)
			@throw [OFInvalidServerResponseException exception];

		/* Opcode */
		if ((buffer[2] & 0x78) != (queryDataBuffer[2] & 0x78))
			@throw [OFInvalidServerResponseException exception];

		/* TC */
		if (buffer[2] & 0x02) {
			OFRunLoopMode runLoopMode;

			if (context->_settings->_usesTCP)
				@throw [OFTruncatedDataException exception];
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Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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