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< a name = "l1" > < / a > < span class = cF2 > // https://www2.cs.duke.edu/courses/fall16/compsci356/DNS/DNS-primer.pdf< / span > < span class = cF0 >
< a name = "l2" > < / a > < / span > < span class = cF2 > // https://en.wikipedia.org/wiki/Domain_Name_System< / span > < span class = cF0 >
< a name = "l3" > < / a >
< a name = "l4" > < / a > < / span > < span class = cF2 > // DNS Cache is a HashTable, similar to ARP Cache< / span > < span class = cF0 >
< a name = "l5" > < / a >
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< a name = "l6" > < / a > #< / span > < span class = cF1 > define< / span > < span class = cF0 > DNS_HASHTABLE_SIZE < / span > < span class = cFE > 2048< / span > < span class = cF0 > < / span > < span class = cF2 > // 1024 might be fine, test it< / span > < span class = cF0 >
< a name = "l7" > < / a > #< / span > < span class = cF1 > define< / span > < span class = cF0 > HTT_DNS < / span > < span class = cFE > 0x00100< / span > < span class = cF0 > < / span > < span class = cF2 > // identical to HTT_DICT_WORD< / span > < span class = cF0 >
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< a name = "l8" > < / a >
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< a name = "l9" > < / a > #< / span > < span class = cF1 > define< / span > < span class = cF0 > DNS_FLAG_RD < / span > < span class = cFE > 0x0100< / span > < span class = cF0 >
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< a name = "l10" > < / a >
< a name = "l11" > < / a > #< / span > < span class = cF1 > define< / span > < span class = cF0 > DNS_OP_QUERY < / span > < span class = cFE > 0< / span > < span class = cF0 >
< a name = "l12" > < / a >
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< a name = "l13" > < / a > #< / span > < span class = cF1 > define< / span > < span class = cF0 > DNS_TYPE_A < / span > < span class = cFE > 1< / span > < span class = cF0 >
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< a name = "l14" > < / a >
< a name = "l15" > < / a > #< / span > < span class = cF1 > define< / span > < span class = cF0 > DNS_CLASS_IN < / span > < span class = cFE > 1< / span > < span class = cF0 >
< a name = "l16" > < / a >
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< a name = "l17" > < / a > #< / span > < span class = cF1 > define< / span > < span class = cF0 > DNS_TIMEOUT < / span > < span class = cFE > 5000< / span > < span class = cF0 >
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< a name = "l18" > < / a >
< a name = "l19" > < / a > #< / span > < span class = cF1 > define< / span > < span class = cF0 > DNS_MAX_RETRIES < / span > < span class = cFE > 5< / span > < span class = cF0 >
< a name = "l20" > < / a >
< a name = "l21" > < / a > < / span > < span class = cF1 > class< / span > < span class = cF0 > CDNSHash:< / span > < span class = cF9 > CHash< / span > < span class = cF0 >
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< a name = "l22" > < / a > { < / span > < span class = cF2 > // store U8 *hostname as CHash-> str U8 *< / span > < span class = cF0 >
< a name = "l23" > < / a > CAddressInfo info;
< a name = "l24" > < / a > < / span > < span class = cF2 > // Shrine has 'TODO: honor TTL' ...< / span > < span class = cF0 >
< a name = "l25" > < / a > < / span > < span class = cF2 > // Duke: 'TTL: the number of seconds the results can be cached'< / span > < span class = cF0 >
< a name = "l26" > < / a > < / span > < span class = cF2 > // perhaps have a separate task for removing cached results ?< / span > < span class = cF0 >
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< a name = "l27" > < / a > };
< a name = "l28" > < / a >
< a name = "l29" > < / a > < / span > < span class = cF1 > class< / span > < span class = cF0 > CDNSDomainName
< a name = "l30" > < / a > {
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< a name = "l31" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > **labels;
< a name = "l32" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > num_labels;
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< a name = "l33" > < / a > };
< a name = "l34" > < / a >
< a name = "l35" > < / a > < / span > < span class = cF1 > class< / span > < span class = cF0 > CDNSQuestion
< a name = "l36" > < / a > {
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< a name = "l37" > < / a > CDNSQuestion *next;
< a name = "l38" > < / a > CDNSDomainName q_name;
< a name = "l39" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > q_type;
< a name = "l40" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > q_class;
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< a name = "l41" > < / a > };
< a name = "l42" > < / a >
< a name = "l43" > < / a > < / span > < span class = cF1 > class< / span > < span class = cF0 > CDNSHeader
< a name = "l44" > < / a > {
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< a name = "l45" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > id;
< a name = "l46" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > flags;
< a name = "l47" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > q_count; < / span > < span class = cF2 > // number of entries in question section< / span > < span class = cF0 >
< a name = "l48" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > a_count; < / span > < span class = cF2 > // number of resource records in answer section< / span > < span class = cF0 >
< a name = "l49" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > ns_count; < / span > < span class = cF2 > // number of name server resource records in authority records section< / span > < span class = cF0 >
< a name = "l50" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > ar_count; < / span > < span class = cF2 > // number of resource records in additional records section< / span > < span class = cF0 >
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< a name = "l51" > < / a > };
< a name = "l52" > < / a >
< a name = "l53" > < / a > < / span > < span class = cF1 > class< / span > < span class = cF0 > CDNSRR
< a name = "l54" > < / a > { < / span > < span class = cF2 > // RR: Resource Record< / span > < span class = cF0 >
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< a name = "l55" > < / a > CDNSRR *next;
< a name = "l56" > < / a > CDNSDomainName name; < / span > < span class = cF2 > // name of the node this record is for< / span > < span class = cF0 >
< a name = "l57" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > type; < / span > < span class = cF2 > // RR type, e.g. 44=SSHFP, 15=MX, 49=DHCID ...< / span > < span class = cF0 >
< a name = "l58" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > rr_class; < / span > < span class = cF2 > // class code< / span > < span class = cF0 >
< a name = "l59" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > ttl; < / span > < span class = cF2 > // count in seconds that RR stays valid (max = 2^31 - 1)< / span > < span class = cF0 >
< a name = "l60" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > rd_length; < / span > < span class = cF2 > // length of r_data member< / span > < span class = cF0 >
< a name = "l61" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *r_data; < / span > < span class = cF2 > // additional RR-specific data< / span > < span class = cF0 >
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< a name = "l62" > < / a > };
< a name = "l63" > < / a >
< a name = "l64" > < / a > < / span > < span class = cF1 > class< / span > < span class = cF0 > CDNSGlobals
< a name = "l65" > < / a > {
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< a name = "l66" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > addr_family;
< a name = "l67" > < / a > CIPAddressStorage dns_ip;
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< a name = "l68" > < / a >
< a name = "l69" > < / a > } dns_globals;
< a name = "l70" > < / a >
< a name = "l71" > < / a > < / span > < span class = cF9 > CHashTable< / span > < span class = cF0 > *dns_cache = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l72" > < / a >
< a name = "l73" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > DNSCacheInit()
< a name = "l74" > < / a > {
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< a name = "l75" > < / a > dns_cache = < / span > < span class = cF5 > HashTableNew< / span > < span class = cF0 > (DNS_HASHTABLE_SIZE);
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< a name = "l76" > < / a >
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< a name = "l77" > < / a > < / span > < span class = cF5 > MemSet< / span > < span class = cF0 > (& dns_globals.dns_ip, < / span > < span class = cFE > 0< / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CIPAddressStorage< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l78" > < / a > dns_globals.addr_family = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l79" > < / a > }
< a name = "l80" > < / a >
< a name = "l81" > < / a > CDNSHash *DNSCacheFind(< / span > < span class = cF1 > U8< / span > < span class = cF0 > *hostname)
< a name = "l82" > < / a > {
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< a name = "l83" > < / a > CDNSHash *entry = < / span > < span class = cF5 > HashFind< / span > < span class = cF0 > (hostname, dns_cache, HTT_DNS);
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< a name = "l84" > < / a >
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< a name = "l85" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (entry == < / span > < span class = cF3 > NULL< / span > < span class = cF0 > )
< a name = "l86" > < / a > NetWarn(< / span > < span class = cF6 > " DNS CACHE FIND: Could not find a hostname in the DNS Cache." < / span > < span class = cF0 > );
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< a name = "l87" > < / a >
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< a name = "l88" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > entry;
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< a name = "l89" > < / a > }
< a name = "l90" > < / a >
< a name = "l91" > < / a > CDNSHash *DNSCachePut(< / span > < span class = cF1 > U8< / span > < span class = cF0 > *hostname, CAddressInfo *info)
< a name = "l92" > < / a > {
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< a name = "l93" > < / a > NetLog(< / span > < span class = cF6 > " DNS CACHE PUT: Attempting Find DNS Entry in Cache: hostname: %s" < / span > < span class = cF0 > , hostname);
< a name = "l94" > < / a > CDNSHash *entry = DNSCacheFind(hostname);
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< a name = "l95" > < / a >
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< a name = "l96" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!entry)
< a name = "l97" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l98" > < / a > entry = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CDNSHash< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l99" > < / a > entry-> str = < / span > < span class = cF5 > StrNew< / span > < span class = cF0 > (hostname);
< a name = "l100" > < / a > entry-> type = HTT_DNS;
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< a name = "l101" > < / a >
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< a name = "l102" > < / a > AddressInfoCopy(& entry-> info, info);
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< a name = "l103" > < / a >
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< a name = "l104" > < / a > < / span > < span class = cF5 > HashAdd< / span > < span class = cF0 > (entry, dns_cache);
< a name = "l105" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l106" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l107" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l108" > < / a > NetWarn(< / span > < span class = cF6 > " DNS CACHE PUT: Entry was already found in Cache. Overwriting." < / span > < span class = cF0 > );
< a name = "l109" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (entry-> info.address);
< a name = "l110" > < / a > AddressInfoCopy(& entry-> info, info);
< a name = "l111" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l112" > < / a >
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< a name = "l113" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > entry;
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< a name = "l114" > < / a > }
< a name = "l115" > < / a >
< a name = "l116" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > DNSQuestionSizeCalculate(CDNSQuestion *q)
< a name = "l117" > < / a > { < / span > < span class = cF2 > // ??< / span > < span class = cF0 >
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< a name = "l118" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > i, size = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l119" > < / a >
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< a name = "l120" > < / a > < / span > < span class = cF1 > for< / span > < span class = cF0 > (i = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; i < q-> q_name.num_labels; i++)
< a name = "l121" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l122" > < / a > size += < / span > < span class = cFE > 1< / span > < span class = cF0 > + < / span > < span class = cF5 > StrLen< / span > < span class = cF0 > (q-> q_name.labels[i]);
< a name = "l123" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l124" > < / a >
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< a name = "l125" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > size + < / span > < span class = cFE > 1< / span > < span class = cF0 > + < / span > < span class = cFE > 4< / span > < span class = cF0 > ;
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< a name = "l126" > < / a > }
< a name = "l127" > < / a >
< a name = "l128" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > DNSQuestionSerialize(< / span > < span class = cF1 > U8< / span > < span class = cF0 > *buffer, CDNSQuestion *q)
< a name = "l129" > < / a > { < / span > < span class = cF2 > // ??< / span > < span class = cF0 >
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< a name = "l130" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > i;
< a name = "l131" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *label;
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< a name = "l132" > < / a >
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< a name = "l133" > < / a > < / span > < span class = cF1 > for< / span > < span class = cF0 > (i = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; i < q-> q_name.num_labels; i++)
< a name = "l134" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l135" > < / a > label = q-> q_name.labels[i];
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< a name = "l136" > < / a >
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< a name = "l137" > < / a > *buffer++ = < / span > < span class = cF5 > StrLen< / span > < span class = cF0 > (label);
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< a name = "l138" > < / a >
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< a name = "l139" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (*label)
< a name = "l140" > < / a > *buffer++ = *label++;
< a name = "l141" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l142" > < / a >
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< a name = "l143" > < / a > *buffer++ = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l144" > < / a > *buffer++ = q-> q_type > > < / span > < span class = cFE > 8< / span > < span class = cF0 > ;
< a name = "l145" > < / a > *buffer++ = q-> q_type & < / span > < span class = cFE > 0xFF< / span > < span class = cF0 > ;
< a name = "l146" > < / a > *buffer++ = q-> q_class > > < / span > < span class = cFE > 8< / span > < span class = cF0 > ;
< a name = "l147" > < / a > *buffer++ = q-> q_class & < / span > < span class = cFE > 0xFF< / span > < span class = cF0 > ;
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< a name = "l148" > < / a > }
< a name = "l149" > < / a >
< a name = "l150" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > DNSQuestionSend(< / span > < span class = cF9 > U16< / span > < span class = cF0 > id, < / span > < span class = cF9 > U16< / span > < span class = cF0 > local_port, CDNSQuestion *q)
< a name = "l151" > < / a > {
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< a name = "l152" > < / a > CIPV4Address *ipv4_addr;
< a name = "l153" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *dns_frame;
< a name = "l154" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > flags;
< a name = "l155" > < / a > CDNSHeader *header;
< a name = "l156" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > de_index;
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< a name = "l157" > < / a >
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< a name = "l158" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (dns_globals.addr_family)
< a name = "l159" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l160" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC: < / span > < span class = cF2 > // 0, global dns ip not set< / span > < span class = cF0 >
< a name = "l161" > < / a > NetErr(< / span > < span class = cF6 > " DNS SEND QUESTION: Failed, global dns addr family was AF_UNSPEC." < / span > < span class = cF0 > );
< a name = "l162" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
2021-07-03 05:07:57 +01:00
< a name = "l163" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l164" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l165" > < / a > NetErr(< / span > < span class = cF6 > " DNS SEND QUESTION: Failed, IPV6 not supported yet in DNS." < / span > < span class = cF0 > );
< a name = "l166" > < / a > < / span > < span class = cF5 > throw< / span > < span class = cF0 > (< / span > < span class = cF6 > 'DNS'< / span > < span class = cF0 > );
2021-07-03 05:07:57 +01:00
< a name = "l167" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l168" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l169" > < / a > ipv4_addr = & dns_globals.dns_ip;
2021-07-03 05:07:57 +01:00
< a name = "l170" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l171" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!*ipv4_addr)
< a name = "l172" > < / a > {
< a name = "l173" > < / a > NetErr(< / span > < span class = cF6 > " DNS SEND QUESTION: Failed, ipv4_addr had no value set." < / span > < span class = cF0 > );
< a name = "l174" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l175" > < / a > }
< a name = "l176" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l177" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l178" > < / a > < / span > < span class = cF2 > // UDPPacketAllocate currently only accepts IPV4 ...< / span > < span class = cF0 >
< a name = "l179" > < / a > de_index = UDPPacketAllocate(& dns_frame,
< a name = "l180" > < / a > IPV4AddressGet,
< a name = "l181" > < / a > local_port,
< a name = "l182" > < / a > *ipv4_addr,
< a name = "l183" > < / a > < / span > < span class = cFE > 53< / span > < span class = cF0 > ,
< a name = "l184" > < / a > < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CDNSHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > + DNSQuestionSizeCalculate< / span > < span class = cF7 > (< / span > < span class = cF0 > q< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l185" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (de_index < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l186" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l187" > < / a > NetErr(< / span > < span class = cF6 > " DNS SEND QUESTION: Failed, UDPPacketAllocate returned error." < / span > < span class = cF0 > );
< a name = "l188" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > de_index;
< a name = "l189" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l190" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l191" > < / a > flags = DNS_OP_QUERY < < < / span > < span class = cFE > 11< / span > < span class = cF0 > | DNS_FLAG_RD;
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< a name = "l192" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l193" > < / a > header = dns_frame;
2021-07-03 05:07:57 +01:00
< a name = "l194" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l195" > < / a > header-> id = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (id);
< a name = "l196" > < / a > header-> flags = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (flags);
< a name = "l197" > < / a > header-> q_count = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l198" > < / a > header-> a_count = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l199" > < / a > header-> ns_count = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l200" > < / a > header-> ar_count = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
2021-07-03 05:07:57 +01:00
< a name = "l201" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l202" > < / a > DNSQuestionSerialize(dns_frame + < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CDNSHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > , q);
2021-07-03 05:07:57 +01:00
< a name = "l203" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l204" > < / a > UDPPacketFinish(de_index);
< a name = "l205" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
2021-07-03 05:07:57 +01:00
< a name = "l206" > < / a >
< a name = "l207" > < / a > }
< a name = "l208" > < / a >
< a name = "l209" > < / a >
< a name = "l210" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > DNSDomainNameParse(< / span > < span class = cF1 > U8< / span > < span class = cF0 > *packet_data, < / span > < span class = cF9 > I64< / span > < span class = cF0 > packet_length, < / span > < span class = cF1 > U8< / span > < span class = cF0 > **data_inout, < / span > < span class = cF9 > I64< / span > < span class = cF0 > *length_inout, CDNSDomainName *name_out)
< a name = "l211" > < / a > { < / span > < span class = cF2 > // these methods look not-so-good, ngl.< / span > < span class = cF0 >
2021-07-04 23:11:34 +01:00
< a name = "l212" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *data = *data_inout;
< a name = "l213" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *name_buf;
< a name = "l214" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > length = *length_inout;
< a name = "l215" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > label_len;
< a name = "l216" > < / a > < / span > < span class = cF1 > Bool< / span > < span class = cF0 > jump_taken = < / span > < span class = cF3 > FALSE< / span > < span class = cF0 > ;
2021-07-03 05:07:57 +01:00
< a name = "l217" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l218" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (length < < / span > < span class = cFE > 1< / span > < span class = cF0 > )
< a name = "l219" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l220" > < / a > NetErr(< / span > < span class = cF6 > " DNS PARSE DOMAIN NAME: Length less than one." < / span > < span class = cF0 > );
< a name = "l221" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l222" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l223" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l224" > < / a > name_out-> labels = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cFE > 16< / span > < span class = cF0 > * < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF1 > U8< / span > < span class = cF0 > *< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l225" > < / a > name_out-> num_labels = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l226" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l227" > < / a > name_buf = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cFE > 256< / span > < span class = cF0 > ); < / span > < span class = cF2 > // ?..< / span > < span class = cF0 >
< a name = "l228" > < / a > name_out-> labels[< / span > < span class = cFE > 0< / span > < span class = cF0 > ] = name_buf;
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< a name = "l229" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l230" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (length)
< a name = "l231" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l232" > < / a > label_len = *data++;
< a name = "l233" > < / a > length--;
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< a name = "l234" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l235" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (label_len == < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l236" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l237" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 > < / span > < span class = cF1 > if< / span > < span class = cF0 > (label_len > = < / span > < span class = cFE > 192< / span > < span class = cF0 > )
< a name = "l238" > < / a > {
< a name = "l239" > < / a > label_len & = < / span > < span class = cFE > 0x3F< / span > < span class = cF0 > ; < / span > < span class = cF2 > // ...< / span > < span class = cF0 >
2021-07-03 05:07:57 +01:00
< a name = "l240" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l241" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!jump_taken)
< a name = "l242" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l243" > < / a > *data_inout = data + < / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l244" > < / a > *length_inout = length - < / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l245" > < / a > jump_taken = < / span > < span class = cF3 > TRUE< / span > < span class = cF0 > ;
< a name = "l246" > < / a > NetLog(< / span > < span class = cF6 > " DNS PARSE DOMAIN NAME: Jump taken" < / span > < span class = cF0 > );
< a name = "l247" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
2021-07-03 05:07:57 +01:00
< a name = "l248" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l249" > < / a > data = packet_data + (label_len < < < / span > < span class = cFE > 8< / span > < span class = cF0 > | *data);
< a name = "l250" > < / a > length = packet_data + packet_length - data;
< a name = "l251" > < / a > }
< a name = "l252" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l253" > < / a > {
< a name = "l254" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (length < label_len)
< a name = "l255" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ; < / span > < span class = cF2 > // ?< / span > < span class = cF0 >
2021-07-03 05:07:57 +01:00
< a name = "l256" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l257" > < / a > < / span > < span class = cF5 > MemCopy< / span > < span class = cF0 > (name_buf, data, label_len);
< a name = "l258" > < / a > data += label_len;
< a name = "l259" > < / a > length -= label_len;
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< a name = "l260" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l261" > < / a > name_buf[label_len] = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l262" > < / a > name_out-> labels[name_out-> num_labels++] = name_buf;
2021-07-03 05:07:57 +01:00
< a name = "l263" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l264" > < / a > name_buf += label_len + < / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l265" > < / a > }
< a name = "l266" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
2021-07-03 05:07:57 +01:00
< a name = "l267" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l268" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!jump_taken)
< a name = "l269" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l270" > < / a > *data_inout = data;
< a name = "l271" > < / a > *length_inout = length;
< a name = "l272" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
2021-07-03 05:07:57 +01:00
< a name = "l273" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l274" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
2021-07-03 05:07:57 +01:00
< a name = "l275" > < / a > }
< a name = "l276" > < / a >
< a name = "l277" > < / a >
< a name = "l278" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > DNSQuestionParse(< / span > < span class = cF1 > U8< / span > < span class = cF0 > *packet_data, < / span > < span class = cF9 > I64< / span > < span class = cF0 > packet_length, < / span > < span class = cF1 > U8< / span > < span class = cF0 > **data_inout, < / span > < span class = cF9 > I64< / span > < span class = cF0 > *length_inout, CDNSQuestion *q_out)
< a name = "l279" > < / a > {
2021-07-04 23:11:34 +01:00
< a name = "l280" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *data;
< a name = "l281" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > length;
< a name = "l282" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > error = DNSDomainNameParse(packet_data, packet_length, data_inout, length_inout, & q_out-> q_name);
2021-07-03 05:07:57 +01:00
< a name = "l283" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l284" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (error < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l285" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > error;
2021-07-03 05:07:57 +01:00
< a name = "l286" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l287" > < / a > data = *data_inout;
< a name = "l288" > < / a > length = *length_inout;
2021-07-03 05:07:57 +01:00
< a name = "l289" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l290" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (length < < / span > < span class = cFE > 4< / span > < span class = cF0 > )
< a name = "l291" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
2021-07-03 05:07:57 +01:00
< a name = "l292" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l293" > < / a > q_out-> next = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l294" > < / a > q_out-> q_type = data[< / span > < span class = cFE > 1< / span > < span class = cF0 > ] < < < / span > < span class = cFE > 8< / span > < span class = cF0 > | data[< / span > < span class = cFE > 0< / span > < span class = cF0 > ];
< a name = "l295" > < / a > q_out-> q_class = data[< / span > < span class = cFE > 3< / span > < span class = cF0 > ] < < < / span > < span class = cFE > 8< / span > < span class = cF0 > | data[< / span > < span class = cFE > 2< / span > < span class = cF0 > ];
2021-07-03 05:07:57 +01:00
< a name = "l296" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l297" > < / a > *data_inout = data + < / span > < span class = cFE > 4< / span > < span class = cF0 > ;
< a name = "l298" > < / a > *length_inout = length - < / span > < span class = cFE > 4< / span > < span class = cF0 > ;
2021-07-03 05:07:57 +01:00
< a name = "l299" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l300" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
2021-07-03 05:07:57 +01:00
< a name = "l301" > < / a > }
< a name = "l302" > < / a >
< a name = "l303" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > DNSRRParse(< / span > < span class = cF1 > U8< / span > < span class = cF0 > *packet_data, < / span > < span class = cF9 > I64< / span > < span class = cF0 > packet_length, < / span > < span class = cF1 > U8< / span > < span class = cF0 > **data_inout, < / span > < span class = cF9 > I64< / span > < span class = cF0 > *length_inout, CDNSRR *rr_out)
< a name = "l304" > < / a > {
2021-07-04 23:11:34 +01:00
< a name = "l305" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *data;
< a name = "l306" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > length;
< a name = "l307" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > record_length;
< a name = "l308" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > error = DNSDomainNameParse(packet_data, packet_length, data_inout, length_inout, & rr_out-> name);
2021-07-03 05:07:57 +01:00
< a name = "l309" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l310" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (error < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l311" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > error;
2021-07-03 05:07:57 +01:00
< a name = "l312" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l313" > < / a > data = *data_inout;
< a name = "l314" > < / a > length = *length_inout;
2021-07-03 05:07:57 +01:00
< a name = "l315" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l316" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (length < < / span > < span class = cFE > 10< / span > < span class = cF0 > )
< a name = "l317" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
2021-07-03 05:07:57 +01:00
< a name = "l318" > < / a >
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< a name = "l319" > < / a > rr_out-> next = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l320" > < / a > < / span > < span class = cF5 > MemCopy< / span > < span class = cF0 > (& rr_out-> type, data, < / span > < span class = cFE > 10< / span > < span class = cF0 > ); < / span > < span class = cF2 > // ???< / span > < span class = cF0 >
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< a name = "l321" > < / a >
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< a name = "l322" > < / a > record_length = < / span > < span class = cFE > 10< / span > < span class = cF0 > + < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (rr_out-> rd_length);
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< a name = "l323" > < / a >
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< a name = "l324" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (length < record_length)
< a name = "l325" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
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< a name = "l326" > < / a >
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< a name = "l327" > < / a > rr_out-> r_data = data + < / span > < span class = cFE > 10< / span > < span class = cF0 > ; < / span > < span class = cF2 > // ??< / span > < span class = cF0 >
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< a name = "l328" > < / a >
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< a name = "l329" > < / a > *data_inout = data + record_length;
< a name = "l330" > < / a > *length_inout = length - record_length;
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< a name = "l331" > < / a >
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< a name = "l332" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l333" > < / a > }
< a name = "l334" > < / a >
< a name = "l335" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > DNSResponseParse(< / span > < span class = cF9 > U16< / span > < span class = cF0 > id, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *data, < / span > < span class = cF9 > I64< / span > < span class = cF0 > length, CDNSHeader **header_out, CDNSQuestion **questions_out, CDNSRR **answers_out)
< a name = "l336" > < / a > {
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< a name = "l337" > < / a > CDNSHeader *header;
< a name = "l338" > < / a > CDNSQuestion *question;
< a name = "l339" > < / a > CDNSRR *answer;
< a name = "l340" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > i;
< a name = "l341" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *packet_data = data;
< a name = "l342" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > packet_length = length;
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< a name = "l343" > < / a >
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< a name = "l344" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (length < < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CDNSHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l345" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l346" > < / a > NetErr(< / span > < span class = cF6 > " DNS PARSE RESPONSE: Length too short." < / span > < span class = cF0 > );
< a name = "l347" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l348" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l349" > < / a >
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< a name = "l350" > < / a > header = data;
< a name = "l351" > < / a > data += < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (CDNSHeader);
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< a name = "l352" > < / a >
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< a name = "l353" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (id != < / span > < span class = cFE > 0< / span > < span class = cF0 > & & < / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > header-> id< / span > < span class = cF7 > )< / span > < span class = cF0 > != id)
< a name = "l354" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l355" > < / a > NetErr(< / span > < span class = cF6 > " DNS PARSE RESPONSE: Header ID mismatch." < / span > < span class = cF0 > );
< a name = "l356" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l357" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l358" > < / a >
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< a name = "l359" > < / a > < / span > < span class = cF1 > for< / span > < span class = cF0 > (i = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; i < < / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > header-> q_count< / span > < span class = cF7 > )< / span > < span class = cF0 > ; i++)
< a name = "l360" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l361" > < / a > question = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CDNSQuestion< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l362" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (DNSQuestionParse< / span > < span class = cF7 > (< / span > < span class = cF0 > packet_data, packet_length, & data, & length, question< / span > < span class = cF7 > )< / span > < span class = cF0 > < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l363" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
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< a name = "l364" > < / a >
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< a name = "l365" > < / a > question-> next = *questions_out;
< a name = "l366" > < / a > *questions_out = question;
< a name = "l367" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l368" > < / a >
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< a name = "l369" > < / a > < / span > < span class = cF1 > for< / span > < span class = cF0 > (i = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; i < < / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > header-> a_count< / span > < span class = cF7 > )< / span > < span class = cF0 > ; i++)
< a name = "l370" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l371" > < / a > answer = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CDNSRR< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l372" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (DNSRRParse< / span > < span class = cF7 > (< / span > < span class = cF0 > packet_data, packet_length, & data, & length, answer< / span > < span class = cF7 > )< / span > < span class = cF0 > < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l373" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
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< a name = "l374" > < / a >
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< a name = "l375" > < / a > answer-> next = *answers_out;
< a name = "l376" > < / a > *answers_out = answer;
< a name = "l377" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l378" > < / a >
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< a name = "l379" > < / a > *header_out = header;
< a name = "l380" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l381" > < / a >
< a name = "l382" > < / a > }
< a name = "l383" > < / a >
< a name = "l384" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > DNSQuestionBuild(CDNSQuestion *q, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *name)
< a name = "l385" > < / a > {
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< a name = "l386" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *copy = < / span > < span class = cF5 > StrNew< / span > < span class = cF0 > (name);
< a name = "l387" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *dot;
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< a name = "l388" > < / a >
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< a name = "l389" > < / a > q-> next = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l390" > < / a > q-> q_name.labels = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cFE > 16< / span > < span class = cF0 > * < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF1 > U8< / span > < span class = cF0 > *< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l391" > < / a > q-> q_name.labels[< / span > < span class = cFE > 0< / span > < span class = cF0 > ] = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l392" > < / a > q-> q_name.num_labels = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l393" > < / a > q-> q_type = DNS_TYPE_A;
< a name = "l394" > < / a > q-> q_class = DNS_CLASS_IN;
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< a name = "l395" > < / a >
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< a name = "l396" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (*copy)
< a name = "l397" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l398" > < / a > q-> q_name.labels[q-> q_name.num_labels++] = copy;
< a name = "l399" > < / a > dot = < / span > < span class = cF5 > StrFirstOcc< / span > < span class = cF0 > (copy, < / span > < span class = cF6 > " ." < / span > < span class = cF0 > );
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< a name = "l400" > < / a >
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< a name = "l401" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (dot)
< a name = "l402" > < / a > {
< a name = "l403" > < / a > *dot = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l404" > < / a > copy = dot + < / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l405" > < / a > }
< a name = "l406" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l407" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l408" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l409" > < / a > }
< a name = "l410" > < / a >
< a name = "l411" > < / a > < / span > < span class = cF2 > // these Free methods bother me a bit...< / span > < span class = cF0 >
< a name = "l412" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > DNSQuestionFree(CDNSQuestion *q)
< a name = "l413" > < / a > {
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< a name = "l414" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (q-> q_name.labels[< / span > < span class = cFE > 0< / span > < span class = cF0 > ]);
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< a name = "l415" > < / a > }
< a name = "l416" > < / a >
< a name = "l417" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > DNSRRFree(CDNSRR *rr)
< a name = "l418" > < / a > {
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< a name = "l419" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (rr-> name.labels[< / span > < span class = cFE > 0< / span > < span class = cF0 > ]);
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< a name = "l420" > < / a > }
< a name = "l421" > < / a >
< a name = "l422" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > DNSQuestionChainFree(CDNSQuestion *questions)
< a name = "l423" > < / a > {
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< a name = "l424" > < / a > CDNSQuestion *next;
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< a name = "l425" > < / a >
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< a name = "l426" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (questions)
< a name = "l427" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l428" > < / a > next = questions-> next;
< a name = "l429" > < / a > DNSQuestionFree(questions);
< a name = "l430" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (questions);
< a name = "l431" > < / a > questions = next;
< a name = "l432" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l433" > < / a > }
< a name = "l434" > < / a >
< a name = "l435" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > DNSRRChainFree(CDNSRR *rrs)
< a name = "l436" > < / a > { < / span > < span class = cF2 > // Shrine sets rrs-> next to a CDNSQuestion when it would be a CDNSRR ... assuming it's wrong and fixing it here..< / span > < span class = cF0 >
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< a name = "l437" > < / a > CDNSRR *next;
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< a name = "l438" > < / a >
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< a name = "l439" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (rrs)
< a name = "l440" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l441" > < / a > next = rrs-> next;
< a name = "l442" > < / a > DNSRRFree(rrs);
< a name = "l443" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (rrs);
< a name = "l444" > < / a > rrs = next;
< a name = "l445" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l446" > < / a > }
< a name = "l447" > < / a >
< a name = "l448" > < / a >
< a name = "l449" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > DNSQueryRun(CUDPSocket *udp_socket, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *name, < / span > < span class = cF9 > U16< / span > < span class = cF0 > port, CAddressInfo **result_out)
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< a name = "l450" > < / a > { < / span > < span class = cF2 > // IPV4-UDP-based, TODO: take good look at this method to ensure no floating pointers after.< / span > < span class = cF0 >
< a name = "l451" > < / a > < / span > < span class = cF2 > // note: UDP Socket created in this method is not closed in this method, gets closed e.g. in DNSAddressInfoGet< / span > < span class = cF0 >
< a name = "l452" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > retries = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l453" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > timeout = DNS_TIMEOUT;
< a name = "l454" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > local_port = < / span > < span class = cF5 > MaxI64< / span > < span class = cF0 > (< / span > < span class = cFE > 1024< / span > < span class = cF0 > , < / span > < span class = cF5 > RandU16< / span > < span class = cF0 > ); < / span > < span class = cF2 > // Pick a random port above 1023. (within standard application port range)< / span > < span class = cF0 >
< a name = "l455" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > id = < / span > < span class = cF5 > RandU16< / span > < span class = cF0 > ;
< a name = "l456" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > error = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l457" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > buffer[< / span > < span class = cFE > 2048< / span > < span class = cF0 > ];
< a name = "l458" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > count;
< a name = "l459" > < / a > < / span > < span class = cF1 > Bool< / span > < span class = cF0 > have; < / span > < span class = cF2 > // ??< / span > < span class = cF0 >
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< a name = "l460" > < / a >
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< a name = "l461" > < / a > CDNSQuestion q;
< a name = "l462" > < / a > CDNSHeader *header;
< a name = "l463" > < / a > CDNSQuestion *questions;
< a name = "l464" > < / a > CDNSRR *answers;
< a name = "l465" > < / a > CDNSRR *a;
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< a name = "l466" > < / a >
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< a name = "l467" > < / a > CSocketAddressIPV4 ipv4_addr;
< a name = "l468" > < / a > CSocketAddressIPV4 ipv4_addr_in; < / span > < span class = cF2 > // ?< / span > < span class = cF0 >
< a name = "l469" > < / a > CSocketAddressIPV4 *ipv4_addr_temp;
< a name = "l470" > < / a > CAddressInfo *res;
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< a name = "l471" > < / a >
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< a name = "l472" > < / a > < / span > < span class = cF2 > //setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO_MS, & timeout, sizeof(timeout))< / span > < span class = cF0 >
< a name = "l473" > < / a > udp_socket-> receive_timeout_ms = timeout;
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< a name = "l474" > < / a >
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< a name = "l475" > < / a > ipv4_addr.family = AF_INET;
< a name = "l476" > < / a > ipv4_addr.port = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (local_port);
< a name = "l477" > < / a > ipv4_addr.address.address = INADDR_ANY;
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< a name = "l478" > < / a >
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< a name = "l479" > < / a > < / span > < span class = cF2 > // UDPSocketBind will be attempted on the udp_socket param, method expects a UDPSocket() result to be made already< / span > < span class = cF0 >
< a name = "l480" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (UDPSocketBind< / span > < span class = cF7 > (< / span > < span class = cF0 > udp_socket, & ipv4_addr< / span > < span class = cF7 > )< / span > < span class = cF0 > ) < / span > < span class = cF2 > // expected return value is 0< / span > < span class = cF0 >
< a name = "l481" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l482" > < / a > NetErr(< / span > < span class = cF6 > " DNS RUN QUERY: Failed to bind UDP socket." < / span > < span class = cF0 > );
< a name = "l483" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l484" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l485" > < / a >
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< a name = "l486" > < / a > DNSQuestionBuild(& q, name);
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< a name = "l487" > < / a >
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< a name = "l488" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (< / span > < span class = cF3 > TRUE< / span > < span class = cF0 > ) < / span > < span class = cF2 > // Shrine uses while (1) infinite loop, need to be careful not to lock< / span > < span class = cF0 >
< a name = "l489" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l490" > < / a > error = DNSQuestionSend(id, local_port, & q);
< a name = "l491" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (error < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l492" > < / a > {
< a name = "l493" > < / a > NetErr(< / span > < span class = cF6 > " DNS RUN QUERY: Failed to Send Question." < / span > < span class = cF0 > );
< a name = "l494" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l495" > < / a > }
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< a name = "l496" > < / a >
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< a name = "l497" > < / a > count = UDPSocketReceiveFrom(udp_socket, buffer, < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > buffer< / span > < span class = cF7 > )< / span > < span class = cF0 > , & ipv4_addr_in);
2021-07-03 05:07:57 +01:00
< a name = "l498" > < / a >
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< a name = "l499" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (count > < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l500" > < / a > {
< a name = "l501" > < / a > NetLog(< / span > < span class = cF6 > " DNS RUN QUERY: Trying Parse Response." < / span > < span class = cF0 > );
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< a name = "l502" > < / a >
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< a name = "l503" > < / a > header = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l504" > < / a > questions = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l505" > < / a > answers = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
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< a name = "l506" > < / a >
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< a name = "l507" > < / a > error = DNSResponseParse(id, buffer, count, & header, & questions, & answers);
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< a name = "l508" > < / a >
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< a name = "l509" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (error == < / span > < span class = cFE > 0< / span > < span class = cF0 > ) < / span > < span class = cF2 > // Shrine has (error > = 0), but DNSResponseParse can only return 0 or 1 ..< / span > < span class = cF0 >
< a name = "l510" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l511" > < / a > have = < / span > < span class = cF3 > FALSE< / span > < span class = cF0 > ;
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< a name = "l512" > < / a >
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< a name = "l513" > < / a > a = answers;
< a name = "l514" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (a)
< a name = "l515" > < / a > {
< a name = "l516" > < / a > < / span > < span class = cF2 > // Shrine has TODO: if multiple acceptable answers, pick one at random, not just first one.< / span > < span class = cF0 >
< a name = "l517" > < / a > < / span > < span class = cF2 > // perhaps we could use r_count in header for that ?< / span > < span class = cF0 >
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< a name = "l518" > < / a >
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< a name = "l519" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > a-> type< / span > < span class = cF7 > )< / span > < span class = cF0 > == DNS_TYPE_A & &
< a name = "l520" > < / a > < / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > a-> rr_class< / span > < span class = cF7 > )< / span > < span class = cF0 > == DNS_CLASS_IN & &
< a name = "l521" > < / a > < / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > a-> rd_length< / span > < span class = cF7 > )< / span > < span class = cF0 > == < / span > < span class = cFE > 4< / span > < span class = cF0 > )
< a name = "l522" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l523" > < / a > res = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CAddressInfo< / span > < span class = cF7 > )< / span > < span class = cF0 > );
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< a name = "l524" > < / a >
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< a name = "l525" > < / a > res-> flags = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l526" > < / a > res-> family = AF_INET;
< a name = "l527" > < / a > res-> socket_type = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > // ??< / span > < span class = cF0 >
< a name = "l528" > < / a > res-> protocol = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > // ??< / span > < span class = cF0 >
< a name = "l529" > < / a > res-> address_length = < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (CSocketAddressIPV4);
< a name = "l530" > < / a > res-> address = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CSocketAddressIPV4< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l531" > < / a > res-> canonical_name = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l532" > < / a > res-> next = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
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< a name = "l533" > < / a >
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< a name = "l534" > < / a > ipv4_addr_temp = res-> address;
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< a name = "l535" > < / a >
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< a name = "l536" > < / a > ipv4_addr_temp-> family = AF_INET;
< a name = "l537" > < / a > ipv4_addr_temp-> port = port;
< a name = "l538" > < / a > < / span > < span class = cF5 > MemCopy< / span > < span class = cF0 > (& ipv4_addr_temp-> address.address, answers-> r_data, < / span > < span class = cFE > 4< / span > < span class = cF0 > );
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< a name = "l539" > < / a >
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< a name = "l540" > < / a > DNSCachePut(name, res);
< a name = "l541" > < / a > *result_out = res;
< a name = "l542" > < / a > have = < / span > < span class = cF3 > TRUE< / span > < span class = cF0 > ;
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< a name = "l543" > < / a >
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< a name = "l544" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l545" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l546" > < / a >
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< a name = "l547" > < / a > a = a-> next;
< a name = "l548" > < / a > }
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< a name = "l549" > < / a >
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< a name = "l550" > < / a > DNSQuestionChainFree(questions);
< a name = "l551" > < / a > DNSRRChainFree(answers);
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< a name = "l552" > < / a >
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< a name = "l553" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (have)
< a name = "l554" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
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< a name = "l555" > < / a >
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< a name = "l556" > < / a > < / span > < span class = cF2 > // Shrine comment: 'at this point, we could try iterative resolution,< / span > < span class = cF0 >
< a name = "l557" > < / a > < / span > < span class = cF2 > // but all end-user DNS servers would have tried that already'< / span > < span class = cF0 >
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< a name = "l558" > < / a >
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< a name = "l559" > < / a > NetErr(< / span > < span class = cF6 > " DNS RUN QUERY: Failed to find suitable answer in reply." < / span > < span class = cF0 > );
< a name = "l560" > < / a > error = -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l561" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l562" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l563" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l564" > < / a > NetErr(< / span > < span class = cF6 > " DNS RUN QUERY: Failed a DNS Parse Response." < / span > < span class = cF0 > );
< a name = "l565" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l566" > < / a > }
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< a name = "l567" > < / a >
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< a name = "l568" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (++retries == DNS_MAX_RETRIES)
< a name = "l569" > < / a > {
< a name = "l570" > < / a > NetErr(< / span > < span class = cF6 > " DNS RUN QUERY: Failed, max retries reached." < / span > < span class = cF0 > );
< a name = "l571" > < / a > error = -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l572" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l573" > < / a > }
< a name = "l574" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l575" > < / a >
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< a name = "l576" > < / a > DNSQuestionFree(& q);
< a name = "l577" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > error;
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< a name = "l578" > < / a > }
< a name = "l579" > < / a >
< a name = "l580" > < / a > < / span > < span class = cF2 > // Shrine has port arg as U8 *service with a no_warn and says it should be parsed as port, allowing that here< / span > < span class = cF0 >
< a name = "l581" > < / a > < / span > < span class = cF2 > // Also has CAddressInfo *hints with a no_warn, omitting that for now< / span > < span class = cF0 >
< a name = "l582" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > DNSAddressInfoGet(< / span > < span class = cF1 > U8< / span > < span class = cF0 > *node_name, < / span > < span class = cF9 > U16< / span > < span class = cF0 > port, CAddressInfo **result)
< a name = "l583" > < / a > {
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< a name = "l584" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > error;
< a name = "l585" > < / a > CUDPSocket *udp_socket;
< a name = "l586" > < / a > CDNSHash *cached_entry = DNSCacheFind(node_name);
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< a name = "l587" > < / a >
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< a name = "l588" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (cached_entry)
< a name = "l589" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l590" > < / a > *result = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CAddressInfo< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l591" > < / a > AddressInfoCopy(*result, & cached_entry-> info);
< a name = "l592" > < / a > < / span > < span class = cF2 > //(*res)-> flags |= AI_CACHED; // TODO: add AI_CACHED define (maybe a better name?) not used anywhere i don't think..< / span > < span class = cF0 >
< a name = "l593" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l594" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l595" > < / a >
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< a name = "l596" > < / a > udp_socket = UDPSocket(AF_INET);
< a name = "l597" > < / a > error = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
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< a name = "l598" > < / a >
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< a name = "l599" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (udp_socket)
< a name = "l600" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l601" > < / a > error = DNSQueryRun(udp_socket, node_name, port, result);
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< a name = "l602" > < / a >
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< a name = "l603" > < / a > UDPSocketClose(udp_socket);
< a name = "l604" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l605" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l606" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l607" > < / a > NetErr(< / span > < span class = cF6 > " DNS GET ADDRESS INFO: Failed to make UDP Socket." < / span > < span class = cF0 > );
< a name = "l608" > < / a > error = -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l609" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
2021-07-03 05:07:57 +01:00
< a name = "l610" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l611" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > error;
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< a name = "l612" > < / a > }
< a name = "l613" > < / a >
< a name = "l614" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > DNSResolverIPV4Set(< / span > < span class = cF9 > U32< / span > < span class = cF0 > ip)
< a name = "l615" > < / a > {
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< a name = "l616" > < / a > CIPV4Address *address = & dns_globals.dns_ip;
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< a name = "l617" > < / a >
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< a name = "l618" > < / a > dns_globals.addr_family = AF_INET;
< a name = "l619" > < / a > address-> address = ip;
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< a name = "l620" > < / a > }
< a name = "l621" > < / a >
< a name = "l622" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > Host(< / span > < span class = cF1 > U8< / span > < span class = cF0 > *hostname)
< a name = "l623" > < / a > { < / span > < span class = cF2 > // getaddrinfo() for whole system in Shrine ends up as pointer to DNSAddressInfoGet.. should we do something similar?< / span > < span class = cF0 >
2021-07-04 23:11:34 +01:00
< a name = "l624" > < / a > CAddressInfo *current;
< a name = "l625" > < / a > CAddressInfo *result = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l626" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > error = DNSAddressInfoGet(hostname, < / span > < span class = cF3 > NULL< / span > < span class = cF0 > , & result);
< a name = "l627" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > i = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l628" > < / a > CSocketAddressIPV4 *ipv4_address;
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< a name = "l629" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l630" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (error < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l631" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l632" > < / a > NetErr(< / span > < span class = cF6 > " HOST(): Failed at DNS Get Address Info." < / span > < span class = cF0 > );
< a name = "l633" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l634" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l635" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l636" > < / a > < / span > < span class = cF6 > " Results:\n\n" < / span > < span class = cF0 > ;
< a name = "l637" > < / a > current = result;
< a name = "l638" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (current)
< a name = "l639" > < / a > {
< a name = "l640" > < / a > < / span > < span class = cF6 > " Result %d:\n" < / span > < span class = cF0 > , ++i;
2021-07-03 05:07:57 +01:00
< a name = "l641" > < / a >
2021-07-04 23:11:34 +01:00
< a name = "l642" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > flags:< / span > < span class = cF0 > < / span > < span class = cF6 > 0x%04X \n" < / span > < span class = cF0 > , current-> flags;
< a name = "l643" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > family:< / span > < span class = cF0 > < / span > < span class = cF6 > %d \n" < / span > < span class = cF0 > , current-> family;
< a name = "l644" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > socket type:< / span > < span class = cF0 > < / span > < span class = cF6 > %d \n" < / span > < span class = cF0 > , current-> socket_type;
< a name = "l645" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > protocol:< / span > < span class = cF0 > < / span > < span class = cF6 > %d \n" < / span > < span class = cF0 > , current-> protocol;
< a name = "l646" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > address length:< / span > < span class = cF0 > < / span > < span class = cF6 > %d \n" < / span > < span class = cF0 > , current-> address_length;
< a name = "l647" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (current-> family)
< a name = "l648" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l649" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l650" > < / a > ipv4_address = current-> address;
< a name = "l651" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > address:< / span > < span class = cF0 > < / span > < span class = cF6 > %s \n" < / span > < span class = cF0 > , NetworkToPresentation(AF_INET, & ipv4_address-> address);
< a name = "l652" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
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< a name = "l653" > < / a >
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< a name = "l654" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l655" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > address:< / span > < span class = cF0 > < / span > < span class = cF6 > IPV6 \n" < / span > < span class = cF0 > ; < / span > < span class = cF2 > // FIXME< / span > < span class = cF0 >
< a name = "l656" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
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< a name = "l657" > < / a >
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< a name = "l658" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l659" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > address:< / span > < span class = cF0 > < / span > < span class = cF6 > AF_UNSPEC \n" < / span > < span class = cF0 > ;
< a name = "l660" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
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< a name = "l661" > < / a >
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< a name = "l662" > < / a > < / span > < span class = cF1 > default< / span > < span class = cF0 > :
< a name = "l663" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > address:< / span > < span class = cF0 > < / span > < span class = cF6 > INVALID \n" < / span > < span class = cF0 > ;
< a name = "l664" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l665" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l666" > < / a >
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< a name = "l667" > < / a > current = current-> next;
< a name = "l668" > < / a > }
< a name = "l669" > < / a > < / span > < span class = cF6 > " \n" < / span > < span class = cF0 > ;
< a name = "l670" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l671" > < / a >
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< a name = "l672" > < / a > AddressInfoFree(result);
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< a name = "l673" > < / a > }
< a name = "l674" > < / a >
< a name = "l675" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > DNSRep()
< a name = "l676" > < / a > {
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< a name = "l677" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > i;
< a name = "l678" > < / a > CDNSHash *temp_hash;
< a name = "l679" > < / a > CSocketAddressIPV4 *ipv4_address;
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< a name = "l680" > < / a >
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< a name = "l681" > < / a > < / span > < span class = cF6 > " $LTBLUE$DNS Report:$FG$\n\n" < / span > < span class = cF0 > ;
< a name = "l682" > < / a > < / span > < span class = cF1 > for< / span > < span class = cF0 > (i = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; i < = dns_cache-> mask; i++)
< a name = "l683" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l684" > < / a > temp_hash = dns_cache-> body[i];
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< a name = "l685" > < / a >
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< a name = "l686" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (temp_hash)
< a name = "l687" > < / a > {
< a name = "l688" > < / a > < / span > < span class = cF6 > " DNS Hash @ 0x%X:\n" < / span > < span class = cF0 > , temp_hash;
< a name = "l689" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > Hostname:< / span > < span class = cF0 > < / span > < span class = cF6 > %s\n" < / span > < span class = cF0 > , temp_hash-> str;
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< a name = "l690" > < / a >
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< a name = "l691" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (temp_hash-> info.family)
< a name = "l692" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l693" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l694" > < / a > ipv4_address = temp_hash-> info.address;
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< a name = "l695" > < / a >
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< a name = "l696" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > IP Address:< / span > < span class = cF0 > < / span > < span class = cF6 > %s\n" < / span > < span class = cF0 > ,
< a name = "l697" > < / a > NetworkToPresentation(temp_hash-> info.family,
< a name = "l698" > < / a > & ipv4_address-> address);
< a name = "l699" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l700" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l701" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > IP Address:< / span > < span class = cF0 > < / span > < span class = cF6 > IPV6\n" < / span > < span class = cF0 > ; < / span > < span class = cF2 > // FIXME< / span > < span class = cF0 >
< a name = "l702" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
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< a name = "l703" > < / a >
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< a name = "l704" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l705" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > IP Address:< / span > < span class = cF0 > < / span > < span class = cF6 > AF_UNSPEC" < / span > < span class = cF0 > ;
< a name = "l706" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
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< a name = "l707" > < / a >
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< a name = "l708" > < / a > < / span > < span class = cF1 > default< / span > < span class = cF0 > :
< a name = "l709" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > IP Address:< / span > < span class = cF0 > < / span > < span class = cF6 > INVALID" < / span > < span class = cF0 > ;
< a name = "l710" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l711" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l712" > < / a >
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< a name = "l713" > < / a > < / span > < span class = cF6 > " \n" < / span > < span class = cF0 > ;
< a name = "l714" > < / a > temp_hash = temp_hash-> next;
< a name = "l715" > < / a > }
< a name = "l716" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l717" > < / a > }
< a name = "l718" > < / a >
< a name = "l719" > < / a > DNSCacheInit;< / span > < / pre > < / body >
< / html >