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< pre style = " font-family:monospace;font-size:12pt " >
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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 > ( & amp ; 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 > & quot ; DNS CACHE FIND : Could not find a hostname in the DNS Cache . & quot ; < / 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 > & quot ; DNS CACHE PUT : Attempting Find DNS Entry in Cache : hostname : % s & quot ; < / 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 - & gt ; str = < / span > < span class = cF5 > StrNew < / span > < span class = cF0 > ( hostname ) ;
< a name = " l100 " > < / a > entry - & gt ; type = HTT_DNS ;
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< a name = " l101 " > < / a >
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< a name = " l102 " > < / a > AddressInfoCopy ( & amp ; entry - & gt ; 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 > & quot ; DNS CACHE PUT : Entry was already found in Cache . Overwriting . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l109 " > < / a > < / span > < span class = cF5 > Free < / span > < span class = cF0 > ( entry - & gt ; info . address ) ;
< a name = " l110 " > < / a > AddressInfoCopy ( & amp ; entry - & gt ; 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 & lt ; q - & gt ; 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 - & gt ; 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 & lt ; q - & gt ; q_name . num_labels ; i + + )
< a name = " l134 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l135 " > < / a > label = q - & gt ; 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 - & gt ; q_type & gt ; & gt ; < / span > < span class = cFE > 8 < / span > < span class = cF0 > ;
< a name = " l145 " > < / a > * buffer + + = q - & gt ; q_type & amp ; < / span > < span class = cFE > 0xFF < / span > < span class = cF0 > ;
< a name = " l146 " > < / a > * buffer + + = q - & gt ; q_class & gt ; & gt ; < / span > < span class = cFE > 8 < / span > < span class = cF0 > ;
< a name = " l147 " > < / a > * buffer + + = q - & gt ; q_class & amp ; < / 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 > & quot ; DNS SEND QUESTION : Failed , global dns addr family was AF_UNSPEC . & quot ; < / 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 > & quot ; DNS SEND QUESTION : Failed , IPV6 not supported yet in DNS . & quot ; < / 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 = & amp ; 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 > & quot ; DNS SEND QUESTION : Failed , ipv4_addr had no value set . & quot ; < / 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 ( & amp ; 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 & lt ; < / 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 > & quot ; DNS SEND QUESTION : Failed , UDPPacketAllocate returned error . & quot ; < / 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 & lt ; & lt ; < / 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 ;
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< a name = " l194 " > < / a >
2021-07-04 23:11:34 +01:00
< a name = " l195 " > < / a > header - & gt ; id = < / span > < span class = cF5 > EndianU16 < / span > < span class = cF0 > ( id ) ;
< a name = " l196 " > < / a > header - & gt ; flags = < / span > < span class = cF5 > EndianU16 < / span > < span class = cF0 > ( flags ) ;
< a name = " l197 " > < / a > header - & gt ; 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 - & gt ; a_count = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l199 " > < / a > header - & gt ; ns_count = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l200 " > < / a > header - & gt ; ar_count = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
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< a name = " l201 " > < / a >
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< 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 ) ;
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< 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 & lt ; < / 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 > & quot ; DNS PARSE DOMAIN NAME : Length less than one . & quot ; < / 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 - & gt ; 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 - & gt ; 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 - & gt ; 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 & gt ; = < / span > < span class = cFE > 192 < / span > < span class = cF0 > )
< a name = " l238 " > < / a > {
< a name = " l239 " > < / a > label_len & amp ; = < / 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 > & quot ; DNS PARSE DOMAIN NAME : Jump taken & quot ; < / span > < span class = cF0 > ) ;
< a name = " l247 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l248 " > < / a >
2021-07-04 23:11:34 +01:00
< a name = " l249 " > < / a > data = packet_data + ( label_len & lt ; & lt ; < / 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 & lt ; 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 - & gt ; labels [ name_out - & gt ; 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 , & amp ; q_out - & gt ; 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 & lt ; < / 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 & lt ; < / 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 - & gt ; next = < / span > < span class = cF3 > NULL < / span > < span class = cF0 > ;
< a name = " l294 " > < / a > q_out - & gt ; q_type = data [ < / span > < span class = cFE > 1 < / span > < span class = cF0 > ] & lt ; & lt ; < / 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 - & gt ; q_class = data [ < / span > < span class = cFE > 3 < / span > < span class = cF0 > ] & lt ; & lt ; < / 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 , & amp ; rr_out - & gt ; 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 & lt ; < / 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 >
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< a name = " l316 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( length & lt ; < / 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 > ;
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< a name = " l318 " > < / a >
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< a name = " l319 " > < / a > rr_out - & gt ; next = < / span > < span class = cF3 > NULL < / span > < span class = cF0 > ;
< a name = " l320 " > < / a > < / span > < span class = cF5 > MemCopy < / span > < span class = cF0 > ( & amp ; rr_out - & gt ; 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 - & gt ; 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 & lt ; 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 - & gt ; 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 & lt ; < / 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 > & quot ; DNS PARSE RESPONSE : Length too short . & quot ; < / 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 > & amp ; & amp ; < / span > < span class = cF5 > EndianU16 < / span > < span class = cF7 > ( < / span > < span class = cF0 > header - & gt ; 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 > & quot ; DNS PARSE RESPONSE : Header ID mismatch . & quot ; < / 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 & lt ; < / span > < span class = cF5 > EndianU16 < / span > < span class = cF7 > ( < / span > < span class = cF0 > header - & gt ; 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 , & amp ; data , & amp ; length , question < / span > < span class = cF7 > ) < / span > < span class = cF0 > & lt ; < / 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 - & gt ; 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 & lt ; < / span > < span class = cF5 > EndianU16 < / span > < span class = cF7 > ( < / span > < span class = cF0 > header - & gt ; 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 , & amp ; data , & amp ; length , answer < / span > < span class = cF7 > ) < / span > < span class = cF0 > & lt ; < / 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 - & gt ; 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 - & gt ; next = < / span > < span class = cF3 > NULL < / span > < span class = cF0 > ;
< a name = " l390 " > < / a > q - & gt ; 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 - & gt ; 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 - & gt ; q_name . num_labels = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l393 " > < / a > q - & gt ; q_type = DNS_TYPE_A ;
< a name = " l394 " > < / a > q - & gt ; 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 - & gt ; q_name . labels [ q - & gt ; q_name . num_labels + + ] = copy ;
< a name = " l399 " > < / a > dot = < / span > < span class = cF5 > StrFirstOcc < / span > < span class = cF0 > ( copy , < / span > < span class = cF6 > & quot ; . & quot ; < / 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 - & gt ; 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 - & gt ; 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 - & gt ; 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 - & gt ; 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 - & gt ; 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 , & amp ; 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 > & quot ; DNS RUN QUERY : Failed to bind UDP socket . & quot ; < / 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 ( & amp ; 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 , & amp ; q ) ;
< a name = " l491 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l492 " > < / a > {
< a name = " l493 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DNS RUN QUERY : Failed to Send Question . & quot ; < / 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 > , & amp ; ipv4_addr_in ) ;
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< a name = " l498 " > < / a >
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< a name = " l499 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( count & gt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l500 " > < / a > {
< a name = " l501 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DNS RUN QUERY : Trying Parse Response . & quot ; < / 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 , & amp ; header , & amp ; questions , & amp ; 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 - & gt ; type < / span > < span class = cF7 > ) < / span > < span class = cF0 > = = DNS_TYPE_A & amp ; & amp ;
< a name = " l520 " > < / a > < / span > < span class = cF5 > EndianU16 < / span > < span class = cF7 > ( < / span > < span class = cF0 > a - & gt ; rr_class < / span > < span class = cF7 > ) < / span > < span class = cF0 > = = DNS_CLASS_IN & amp ; & amp ;
< a name = " l521 " > < / a > < / span > < span class = cF5 > EndianU16 < / span > < span class = cF7 > ( < / span > < span class = cF0 > a - & gt ; 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 - & gt ; flags = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l526 " > < / a > res - & gt ; family = AF_INET ;
< a name = " l527 " > < / a > res - & gt ; socket_type = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ; < / span > < span class = cF2 > // ??</span><span class=cF0>
< a name = " l528 " > < / a > res - & gt ; protocol = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ; < / span > < span class = cF2 > // ??</span><span class=cF0>
< a name = " l529 " > < / a > res - & gt ; address_length = < / span > < span class = cF1 > sizeof < / span > < span class = cF0 > ( CSocketAddressIPV4 ) ;
< a name = " l530 " > < / a > res - & gt ; 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 - & gt ; canonical_name = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l532 " > < / a > res - & gt ; 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 - & gt ; address ;
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< a name = " l535 " > < / a >
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< a name = " l536 " > < / a > ipv4_addr_temp - & gt ; family = AF_INET ;
< a name = " l537 " > < / a > ipv4_addr_temp - & gt ; port = port ;
< a name = " l538 " > < / a > < / span > < span class = cF5 > MemCopy < / span > < span class = cF0 > ( & amp ; ipv4_addr_temp - & gt ; address . address , answers - & gt ; 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 - & gt ; 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 >
2021-07-04 23:11:34 +01:00
< a name = " l559 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DNS RUN QUERY : Failed to find suitable answer in reply . & quot ; < / 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 > & quot ; DNS RUN QUERY : Failed a DNS Parse Response . & quot ; < / 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 >
2021-07-04 23:11:34 +01:00
< 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 > & quot ; DNS RUN QUERY : Failed , max retries reached . & quot ; < / 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 >
2021-07-04 23:11:34 +01:00
< a name = " l576 " > < / a > DNSQuestionFree ( & amp ; 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 >
2021-07-04 23:11:34 +01:00
< 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 , & amp ; cached_entry - & gt ; 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 > & quot ; DNS GET ADDRESS INFO : Failed to make UDP Socket . & quot ; < / 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 >
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< 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 = & amp ; dns_globals . dns_ip ;
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< a name = " l617 " > < / a >
2021-07-04 23:11:34 +01:00
< a name = " l618 " > < / a > dns_globals . addr_family = AF_INET ;
< a name = " l619 " > < / a > address - & gt ; 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>
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< 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 > , & amp ; 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 >
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< a name = " l630 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error & lt ; < / 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 > & quot ; HOST ( ) : Failed at DNS Get Address Info . & quot ; < / 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 > & quot ; Results : \ n \ n & quot ; < / 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 > & quot ; Result % d : \ n & quot ; < / span > < span class = cF0 > , + + i ;
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< a name = " l641 " > < / a >
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< a name = " l642 " > < / a > < / span > < span class = cF6 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > flags : < / span > < span class = cF0 > < / span > < span class = cF6 > 0 x % 04 X \ n & quot ; < / span > < span class = cF0 > , current - & gt ; flags ;
< a name = " l643 " > < / a > < / span > < span class = cF6 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > family : < / span > < span class = cF0 > < / span > < span class = cF6 > % d \ n & quot ; < / span > < span class = cF0 > , current - & gt ; family ;
< a name = " l644 " > < / a > < / span > < span class = cF6 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > socket type : < / span > < span class = cF0 > < / span > < span class = cF6 > % d \ n & quot ; < / span > < span class = cF0 > , current - & gt ; socket_type ;
< a name = " l645 " > < / a > < / span > < span class = cF6 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > protocol : < / span > < span class = cF0 > < / span > < span class = cF6 > % d \ n & quot ; < / span > < span class = cF0 > , current - & gt ; protocol ;
< a name = " l646 " > < / a > < / span > < span class = cF6 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > address length : < / span > < span class = cF0 > < / span > < span class = cF6 > % d \ n & quot ; < / span > < span class = cF0 > , current - & gt ; address_length ;
< a name = " l647 " > < / a > < / span > < span class = cF1 > switch < / span > < span class = cF0 > ( current - & gt ; 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 - & gt ; address ;
< a name = " l651 " > < / a > < / span > < span class = cF6 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > address : < / span > < span class = cF0 > < / span > < span class = cF6 > % s \ n & quot ; < / span > < span class = cF0 > , NetworkToPresentation ( AF_INET , & amp ; ipv4_address - & gt ; 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 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > address : < / span > < span class = cF0 > < / span > < span class = cF6 > IPV6 \ n & quot ; < / 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 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > address : < / span > < span class = cF0 > < / span > < span class = cF6 > AF_UNSPEC \ n & quot ; < / 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 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > address : < / span > < span class = cF0 > < / span > < span class = cF6 > INVALID \ n & quot ; < / 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 - & gt ; next ;
< a name = " l668 " > < / a > }
< a name = " l669 " > < / a > < / span > < span class = cF6 > & quot ; \ n & quot ; < / 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 > & quot ; $ LTBLUE $ DNS Report : $ FG $ \ n \ n & quot ; < / 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 & lt ; = dns_cache - & gt ; mask ; i + + )
< a name = " l683 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l684 " > < / a > temp_hash = dns_cache - & gt ; 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 > & quot ; DNS Hash @ 0 x % X : \ n & quot ; < / span > < span class = cF0 > , temp_hash ;
< a name = " l689 " > < / a > < / span > < span class = cF6 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > Hostname : < / span > < span class = cF0 > < / span > < span class = cF6 > % s \ n & quot ; < / span > < span class = cF0 > , temp_hash - & gt ; 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 - & gt ; 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 - & gt ; info . address ;
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< a name = " l695 " > < / a >
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< a name = " l696 " > < / a > < / span > < span class = cF6 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > IP Address : < / span > < span class = cF0 > < / span > < span class = cF6 > % s \ n & quot ; < / span > < span class = cF0 > ,
< a name = " l697 " > < / a > NetworkToPresentation ( temp_hash - & gt ; info . family ,
< a name = " l698 " > < / a > & amp ; ipv4_address - & gt ; 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 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > IP Address : < / span > < span class = cF0 > < / span > < span class = cF6 > IPV6 \ n & quot ; < / 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 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > IP Address : < / span > < span class = cF0 > < / span > < span class = cF6 > AF_UNSPEC & quot ; < / 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 > & quot ; < / span > < span class = cF0 > < / span > < span class = cF6 > IP Address : < / span > < span class = cF0 > < / span > < span class = cF6 > INVALID & quot ; < / 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 > & quot ; \ n & quot ; < / span > < span class = cF0 > ;
< a name = " l714 " > < / a > temp_hash = temp_hash - & gt ; 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 >
