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< pre style = " font-family:monospace;font-size:12pt " >
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< a name = " l1 " > < / a > < span class = cF2 > //www.networksorcery.com/enp/protocol/dhcp.htm</span><span class=cF0>
< a name = " l2 " > < / a >
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< a name = " l3 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_OPCODE_BOOTREQUEST < / span > < span class = cFE > 0x01 < / span > < span class = cF0 >
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< a name = " l4 " > < / a >
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< a name = " l5 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_OPTION_SUBNET_MASK < / span > < span class = cFE > 1 < / span > < span class = cF0 >
< a name = " l6 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_OPTION_ROUTER < / span > < span class = cFE > 3 < / span > < span class = cF0 >
< a name = " l7 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_OPTION_DNS < / span > < span class = cFE > 6 < / span > < span class = cF0 >
< a name = " l8 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_OPTION_DOMAIN_NAME < / span > < span class = cFE > 15 < / span > < span class = cF0 >
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< a name = " l9 " > < / a >
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< a name = " l10 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_OPTION_REQUESTED_IP < / span > < span class = cFE > 50 < / span > < span class = cF0 >
< a name = " l11 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_OPTION_MESSAGETYPE < / span > < span class = cFE > 53 < / span > < span class = cF0 >
< a name = " l12 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_OPTION_SERVER_ID < / span > < span class = cFE > 54 < / span > < span class = cF0 >
< a name = " l13 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_OPTION_PARAMLIST < / span > < span class = cFE > 55 < / span > < span class = cF0 >
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< a name = " l14 " > < / a >
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< a name = " l15 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_MESSAGETYPE_DISCOVER < / span > < span class = cFE > 0x01 < / span > < span class = cF0 >
< a name = " l16 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_MESSAGETYPE_OFFER < / span > < span class = cFE > 0x02 < / span > < span class = cF0 >
< a name = " l17 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_MESSAGETYPE_REQUEST < / span > < span class = cFE > 0x03 < / span > < span class = cF0 >
< a name = " l18 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_MESSAGETYPE_ACK < / span > < span class = cFE > 0x05 < / span > < span class = cF0 >
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< a name = " l19 " > < / a >
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< a name = " l20 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_COOKIE < / span > < span class = cFE > 0x63825363 < / span > < span class = cF0 >
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< a name = " l21 " > < / a >
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< a name = " l22 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_STATE_CLIENT_START < / span > < span class = cFE > 0 < / span > < span class = cF0 >
< a name = " l23 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_STATE_CLIENT_DISCOVER < / span > < span class = cFE > 1 < / span > < span class = cF0 >
< a name = " l24 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_STATE_CLIENT_REQUEST < / span > < span class = cFE > 2 < / span > < span class = cF0 >
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< a name = " l25 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_STATE_CLIENT_REQ_ACCEPTED < / span > < span class = cFE > 3 < / span > < span class = cF0 >
< a name = " l26 " > < / a >
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< a name = " l27 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_TIMEOUT < / span > < span class = cFE > 3000 < / span > < span class = cF0 >
< a name = " l28 " > < / a > # < / span > < span class = cF1 > define < / span > < span class = cF0 > DHCP_MAX_RETRIES < / span > < span class = cFE > 5 < / span > < span class = cF0 > < / span > < span class = cF2 > // shrine has 3, why not 5 :^)</span><span class=cF0>
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< a name = " l29 " > < / a >
< a name = " l30 " > < / a > < / span > < span class = cF1 > class < / span > < span class = cF0 > CDHCPHeader
< a name = " l31 " > < / a > {
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< a name = " l32 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > opcode ; < / span > < span class = cF2 > // Opcode</span><span class=cF0>
< a name = " l33 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > hw_type ; < / span > < span class = cF2 > // Hardware Type</span><span class=cF0>
< a name = " l34 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > hw_addr_len ; < / span > < span class = cF2 > // Hardware Address Length</span><span class=cF0>
< a name = " l35 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > hops ; < / span > < span class = cF2 > // Hop Count</span><span class=cF0>
< a name = " l36 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > xid ; < / span > < span class = cF2 > // Transaction ID</span><span class=cF0>
< a name = " l37 " > < / a > < / span > < span class = cF9 > U16 < / span > < span class = cF0 > seconds ; < / span > < span class = cF2 > // Elapsed time in seconds since client began address acquisition or renewal process</span><span class=cF0>
< a name = " l38 " > < / a > < / span > < span class = cF9 > U16 < / span > < span class = cF0 > flags ; < / span > < span class = cF2 > // Flags</span><span class=cF0>
< a name = " l39 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > client_ip ; < / span > < span class = cF2 > // Client IP Address</span><span class=cF0>
< a name = " l40 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > your_ip ; < / span > < span class = cF2 > // Your IP Address</span><span class=cF0>
< a name = " l41 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > server_ip ; < / span > < span class = cF2 > // Server IP Address</span><span class=cF0>
< a name = " l42 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > gateway_ip ; < / span > < span class = cF2 > // Gateway IP Address</span><span class=cF0>
< a name = " l43 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > client_hw_addr [ < / span > < span class = cFE > 16 < / span > < span class = cF0 > ] ; < / span > < span class = cF2 > // Client Hardware Address</span><span class=cF0>
< a name = " l44 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > server_name [ < / span > < span class = cFE > 64 < / span > < span class = cF0 > ] ; < / span > < span class = cF2 > // Server Hostname</span><span class=cF0>
< a name = " l45 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > boot_file [ < / span > < span class = cFE > 128 < / span > < span class = cF0 > ] ; < / span > < span class = cF2 > // Boot Filename</span><span class=cF0>
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< a name = " l46 " > < / a > } ;
< a name = " l47 " > < / a >
< a name = " l48 " > < / a > < / span > < span class = cF1 > class < / span > < span class = cF0 > CDHCPDiscoverOptions
< a name = " l49 " > < / a > {
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< a name = " l50 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > cookie ;
< a name = " l51 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > message_type ;
< a name = " l52 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > message_length ;
< a name = " l53 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > message ; < / span > < span class = cF2 > // dmt</span><span class=cF0>
< a name = " l54 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > param_req_list_type ;
< a name = " l55 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > param_req_list_length ;
< a name = " l56 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > param_req_list [ < / span > < span class = cFE > 4 < / span > < span class = cF0 > ] ;
< a name = " l57 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > < / span > < span class = cF1 > end < / span > < span class = cF0 > ;
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< a name = " l58 " > < / a > } ;
< a name = " l59 " > < / a >
< a name = " l60 " > < / a > < / span > < span class = cF1 > class < / span > < span class = cF0 > CDHCPRequestOptions
< a name = " l61 " > < / a > {
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< a name = " l62 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > cookie ;
< a name = " l63 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > message_type ;
< a name = " l64 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > message_length ;
< a name = " l65 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > message ; < / span > < span class = cF2 > // dmt</span><span class=cF0>
< a name = " l66 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > requested_ip_type ;
< a name = " l67 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > requested_ip_length ;
< a name = " l68 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > requested_ip ;
< a name = " l69 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > server_id_type ;
< a name = " l70 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > server_id_length ;
< a name = " l71 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > server_id ;
< a name = " l72 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > < / span > < span class = cF1 > end < / span > < span class = cF0 > ;
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< a name = " l73 " > < / a > } ;
< a name = " l74 " > < / a >
< a name = " l75 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > DHCPTransactionBegin ( )
< a name = " l76 " > < / a > {
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< a name = " l77 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > < / span > < span class = cF5 > RandU32 < / span > < span class = cF0 > ;
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< a name = " l78 " > < / a > }
< a name = " l79 " > < / a >
< a name = " l80 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > DHCPDiscoverSend ( < / span > < span class = cF9 > U32 < / span > < span class = cF0 > xid )
< a name = " l81 " > < / a > {
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< a name = " l82 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * dhcp_frame ;
< a name = " l83 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > de_index ;
< a name = " l84 " > < / a > CDHCPHeader * dhcp ;
< a name = " l85 " > < / a > CDHCPDiscoverOptions * opts ;
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< a name = " l86 " > < / a >
< a name = " l87 " > < / a >
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< a name = " l88 " > < / a > de_index = UDPPacketAllocate ( & amp ; dhcp_frame ,
< a name = " l89 " > < / a > < / span > < span class = cFE > 0x00000000 < / span > < span class = cF0 > ,
< a name = " l90 " > < / a > < / span > < span class = cFE > 68 < / span > < span class = cF0 > ,
< a name = " l91 " > < / a > < / span > < span class = cFE > 0xFFFFFFFF < / span > < span class = cF0 > ,
< a name = " l92 " > < / a > < / span > < span class = cFE > 67 < / span > < span class = cF0 > ,
< a name = " l93 " > < / a > < / span > < span class = cF1 > sizeof < / span > < span class = cF7 > ( < / span > < span class = cF0 > CDHCPHeader < / span > < span class = cF7 > ) < / span > < span class = cF0 > + < / span > < span class = cF1 > sizeof < / span > < span class = cF7 > ( < / span > < span class = cF0 > CDHCPDiscoverOptions < / span > < span class = cF7 > ) < / span > < span class = cF0 > ) ;
< a name = " l94 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( de_index & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l95 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l96 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP SEND DISCOVER : Failed , UDP Packet Allocate error . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l97 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > de_index ;
< a name = " l98 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l99 " > < / a >
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< a name = " l100 " > < / a > dhcp = dhcp_frame ;
< a name = " l101 " > < / a > < / span > < span class = cF5 > MemSet < / span > < span class = cF0 > ( dhcp , < / span > < span class = cFE > 0 < / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof < / span > < span class = cF7 > ( < / span > < span class = cF0 > CDHCPHeader < / span > < span class = cF7 > ) < / span > < span class = cF0 > ) ;
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< a name = " l102 " > < / a >
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< a name = " l103 " > < / a > dhcp - & gt ; opcode = DHCP_OPCODE_BOOTREQUEST ;
< a name = " l104 " > < / a > dhcp - & gt ; hw_type = HTYPE_ETHERNET ;
< a name = " l105 " > < / a > dhcp - & gt ; hw_addr_len = HLEN_ETHERNET ;
< a name = " l106 " > < / a > dhcp - & gt ; hops = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l107 " > < / a > dhcp - & gt ; xid = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( xid ) ;
< a name = " l108 " > < / a > dhcp - & gt ; seconds = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l109 " > < / a > dhcp - & gt ; flags = < / span > < span class = cF5 > EndianU16 < / span > < span class = cF0 > ( < / span > < span class = cFE > 0x8000 < / span > < span class = cF0 > ) ; < / span > < span class = cF2 > // DHCP flag: accept Offer from Broadcast.</span><span class=cF0>
< a name = " l110 " > < / a > dhcp - & gt ; client_ip = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l111 " > < / a > dhcp - & gt ; your_ip = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l112 " > < / a > dhcp - & gt ; server_ip = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l113 " > < / a > dhcp - & gt ; gateway_ip = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l114 " > < / a > < / span > < span class = cF5 > MemCopy < / span > < span class = cF0 > ( dhcp - & gt ; client_hw_addr , EthernetMACGet , MAC_ADDRESS_LENGTH ) ;
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< a name = " l115 " > < / a >
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< a name = " l116 " > < / a > opts = dhcp_frame + < / span > < span class = cF1 > sizeof < / span > < span class = cF0 > ( CDHCPHeader ) ;
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< a name = " l117 " > < / a >
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< a name = " l118 " > < / a > opts - & gt ; cookie = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( DHCP_COOKIE ) ;
< a name = " l119 " > < / a > opts - & gt ; message_type = DHCP_OPTION_MESSAGETYPE ;
< a name = " l120 " > < / a > opts - & gt ; message_length = < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l121 " > < / a > opts - & gt ; message = DHCP_MESSAGETYPE_DISCOVER ;
< a name = " l122 " > < / a > opts - & gt ; param_req_list_type = DHCP_OPTION_PARAMLIST ;
< a name = " l123 " > < / a > opts - & gt ; param_req_list_length = < / span > < span class = cFE > 4 < / span > < span class = cF0 > ;
< a name = " l124 " > < / a > opts - & gt ; param_req_list [ < / span > < span class = cFE > 0 < / span > < span class = cF0 > ] = DHCP_OPTION_SUBNET_MASK ;
< a name = " l125 " > < / a > opts - & gt ; param_req_list [ < / span > < span class = cFE > 1 < / span > < span class = cF0 > ] = DHCP_OPTION_ROUTER ;
< a name = " l126 " > < / a > opts - & gt ; param_req_list [ < / span > < span class = cFE > 2 < / span > < span class = cF0 > ] = DHCP_OPTION_DNS ;
< a name = " l127 " > < / a > opts - & gt ; param_req_list [ < / span > < span class = cFE > 3 < / span > < span class = cF0 > ] = DHCP_OPTION_DOMAIN_NAME ;
< a name = " l128 " > < / a > opts - & gt ; < / span > < span class = cF1 > end < / span > < span class = cF0 > = < / span > < span class = cFE > 0xFF < / span > < span class = cF0 > ; < / span > < span class = cF2 > // ??</span><span class=cF0>
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< a name = " l129 " > < / a >
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< a name = " l130 " > < / a > UDPPacketFinish ( de_index ) ;
< a name = " l131 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > de_index ;
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< a name = " l132 " > < / a > }
< a name = " l133 " > < / a >
< a name = " l134 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > DHCPRequestSend ( < / span > < span class = cF9 > U32 < / span > < span class = cF0 > xid , < / span > < span class = cF9 > U32 < / span > < span class = cF0 > requested_ip , < / span > < span class = cF9 > U32 < / span > < span class = cF0 > server_ip )
< a name = " l135 " > < / a > {
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< a name = " l136 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * dhcp_frame ;
< a name = " l137 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > de_index ;
< a name = " l138 " > < / a > CDHCPHeader * dhcp ;
< a name = " l139 " > < / a > CDHCPRequestOptions * opts ;
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< a name = " l140 " > < / a >
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< a name = " l141 " > < / a > de_index = UDPPacketAllocate ( & amp ; dhcp_frame ,
< a name = " l142 " > < / a > < / span > < span class = cFE > 0x00000000 < / span > < span class = cF0 > ,
< a name = " l143 " > < / a > < / span > < span class = cFE > 68 < / span > < span class = cF0 > ,
< a name = " l144 " > < / a > < / span > < span class = cFE > 0xFFFFFFFF < / span > < span class = cF0 > ,
< a name = " l145 " > < / a > < / span > < span class = cFE > 67 < / span > < span class = cF0 > ,
< a name = " l146 " > < / a > < / span > < span class = cF1 > sizeof < / span > < span class = cF7 > ( < / span > < span class = cF0 > CDHCPHeader < / span > < span class = cF7 > ) < / span > < span class = cF0 > + < / span > < span class = cF1 > sizeof < / span > < span class = cF7 > ( < / span > < span class = cF0 > CDHCPRequestOptions < / span > < span class = cF7 > ) < / span > < span class = cF0 > ) ;
< a name = " l147 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( de_index & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l148 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l149 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP SEND REQUEST : Failed , UDP Packet Allocate error . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l150 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l151 " > < / a >
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< a name = " l152 " > < / a > dhcp = dhcp_frame ;
< a name = " l153 " > < / a > < / span > < span class = cF5 > MemSet < / span > < span class = cF0 > ( dhcp , < / span > < span class = cFE > 0 < / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof < / span > < span class = cF7 > ( < / span > < span class = cF0 > CDHCPHeader < / span > < span class = cF7 > ) < / span > < span class = cF0 > ) ;
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< a name = " l154 " > < / a >
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< a name = " l155 " > < / a > dhcp - & gt ; opcode = DHCP_OPCODE_BOOTREQUEST ;
< a name = " l156 " > < / a > dhcp - & gt ; hw_type = HTYPE_ETHERNET ;
< a name = " l157 " > < / a > dhcp - & gt ; hw_addr_len = HLEN_ETHERNET ;
< a name = " l158 " > < / a > dhcp - & gt ; hops = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l159 " > < / a > dhcp - & gt ; xid = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( xid ) ;
< a name = " l160 " > < / a > dhcp - & gt ; seconds = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l161 " > < / a > dhcp - & gt ; flags = < / span > < span class = cF5 > EndianU16 < / span > < span class = cF0 > ( < / span > < span class = cFE > 0x0000 < / span > < span class = cF0 > ) ; < / span > < span class = cF2 > // DHCP flag: accept ACK from Unicast.</span><span class=cF0>
< a name = " l162 " > < / a > dhcp - & gt ; client_ip = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l163 " > < / a > dhcp - & gt ; your_ip = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l164 " > < / a > dhcp - & gt ; server_ip = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( server_ip ) ;
< a name = " l165 " > < / a > dhcp - & gt ; gateway_ip = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l166 " > < / a > < / span > < span class = cF5 > MemCopy < / span > < span class = cF0 > ( dhcp - & gt ; client_hw_addr , EthernetMACGet , MAC_ADDRESS_LENGTH ) ;
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< a name = " l167 " > < / a >
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< a name = " l168 " > < / a > opts = dhcp_frame + < / span > < span class = cF1 > sizeof < / span > < span class = cF0 > ( CDHCPHeader ) ;
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< a name = " l169 " > < / a >
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< a name = " l170 " > < / a > opts - & gt ; cookie = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( DHCP_COOKIE ) ;
< a name = " l171 " > < / a > opts - & gt ; message_type = DHCP_OPTION_MESSAGETYPE ;
< a name = " l172 " > < / a > opts - & gt ; message_length = < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l173 " > < / a > opts - & gt ; message = DHCP_MESSAGETYPE_REQUEST ;
< a name = " l174 " > < / a > opts - & gt ; requested_ip_type = DHCP_OPTION_REQUESTED_IP ;
< a name = " l175 " > < / a > opts - & gt ; requested_ip_length = < / span > < span class = cFE > 4 < / span > < span class = cF0 > ;
< a name = " l176 " > < / a > opts - & gt ; requested_ip = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( requested_ip ) ;
< a name = " l177 " > < / a > opts - & gt ; server_id_type = DHCP_OPTION_SERVER_ID ;
< a name = " l178 " > < / a > opts - & gt ; server_id_length = < / span > < span class = cFE > 4 < / span > < span class = cF0 > ;
< a name = " l179 " > < / a > opts - & gt ; server_id = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( server_ip ) ;
< a name = " l180 " > < / a > opts - & gt ; < / span > < span class = cF1 > end < / span > < span class = cF0 > = < / span > < span class = cFE > 0xFF < / span > < span class = cF0 > ;
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< a name = " l181 " > < / a >
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< a name = " l182 " > < / a > UDPPacketFinish ( de_index ) ;
< a name = " l183 " > < / 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 = " l184 " > < / a > }
< a name = " l185 " > < / a >
< a name = " l186 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > DHCPBeginParse ( < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * * data_inout , < / span > < span class = cF9 > I64 < / span > < span class = cF0 > * length_inout , CDHCPHeader * * header_out )
< a name = " l187 " > < / a > {
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< a name = " l188 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * data = * data_inout ;
< a name = " l189 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > length = * length_inout ;
< a name = " l190 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * cookie ;
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< a name = " l191 " > < / a >
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< a name = " l192 " > < / 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 > CDHCPHeader < / span > < span class = cF7 > ) < / span > < span class = cF0 > + < / span > < span class = cFE > 4 < / span > < span class = cF0 > ) < / span > < span class = cF2 > // + 4?</span><span class=cF0>
< a name = " l193 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l194 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP PARSE BEGIN : Failed , length too short . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l195 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > - < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l196 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l197 " > < / a >
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< a name = " l198 " > < / a > cookie = data + < / span > < span class = cF1 > sizeof < / span > < span class = cF0 > ( CDHCPHeader ) ;
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< a name = " l199 " > < / a >
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< a name = " l200 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( < / span > < span class = cF5 > EndianU32 < / span > < span class = cF7 > ( < / span > < span class = cF0 > * cookie < / span > < span class = cF7 > ) < / span > < span class = cF0 > ! = DHCP_COOKIE )
< a name = " l201 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l202 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP PARSE BEGIN : Failed , cookie doesn ' t match DHCP - cookie . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l203 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > - < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l204 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l205 " > < / a >
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< a name = " l206 " > < / a > * header_out = data ;
< a name = " l207 " > < / a > * data_inout = data + < / span > < span class = cF1 > sizeof < / span > < span class = cF0 > ( CDHCPHeader ) + < / span > < span class = cFE > 4 < / span > < span class = cF0 > ; < / span > < span class = cF2 > // ?</span><span class=cF0>
< a name = " l208 " > < / a > * length_inout = length - < / span > < span class = cF1 > sizeof < / span > < span class = cF0 > ( CDHCPHeader ) + < / span > < span class = cFE > 4 < / span > < span class = cF0 > ; < / span > < span class = cF2 > // ?..</span><span class=cF0>
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< a name = " l209 " > < / a >
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< a name = " l210 " > < / 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 = " l211 " > < / a > }
< a name = " l212 " > < / a >
< a name = " l213 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > DHCPOptionParse ( < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * * data_inout , < / span > < span class = cF9 > I64 < / span > < span class = cF0 > * length_inout , < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * type_out , < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * value_length_out , < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * * value_out )
< a name = " l214 " > < / a > {
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< a name = " l215 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * data = * data_inout ;
< a name = " l216 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > length = * length_inout ;
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< a name = " l217 " > < / a >
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< a name = " l218 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( length & lt ; < / span > < span class = cFE > 2 < / span > < span class = cF0 > | | length & lt ; < / span > < span class = cFE > 2 < / span > < span class = cF0 > + data [ < / span > < span class = cFE > 1 < / span > < span class = cF0 > ] ) < / span > < span class = cF2 > // ??? what is the 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 ; DHCP PARSE OPTION : Failed , length too short . & 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 >
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< a name = " l224 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( data [ < / span > < span class = cFE > 0 < / span > < span class = cF0 > ] = = < / span > < span class = cFE > 0xFF < / span > < span class = cF0 > ) < / span > < span class = cF2 > // ahead, data[0] is type_out, so data[0] is perhaps usually type?</span><span class=cF0>
< a name = " l225 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l226 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DHCP PARSE OPTION : Saw 0xFF , returning 0. & quot ; < / span > < span class = cF0 > ) ;
< a name = " l227 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l228 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l229 " > < / a >
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< a name = " l230 " > < / a > * type_out = data [ < / span > < span class = cFE > 0 < / span > < span class = cF0 > ] ;
< a name = " l231 " > < / a > * value_length_out = data [ < / span > < span class = cFE > 1 < / span > < span class = cF0 > ] ;
< a name = " l232 " > < / a > * value_out = data + < / span > < span class = cFE > 2 < / span > < span class = cF0 > ;
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< a name = " l233 " > < / a >
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< a name = " l234 " > < / a > * data_inout = data + < / span > < span class = cFE > 2 < / span > < span class = cF0 > + * value_length_out ;
< a name = " l235 " > < / a > * length_inout = length - < / span > < span class = cFE > 2 < / span > < span class = cF0 > + * value_length_out ;
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< a name = " l236 " > < / a >
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< a name = " l237 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > data [ < / span > < span class = cFE > 0 < / span > < span class = cF0 > ] ; < / span > < span class = cF2 > // returns ... type?</span><span class=cF0>
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< a name = " l238 " > < / a > }
< a name = " l239 " > < / a >
< a name = " l240 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > DHCPOfferParse ( < / span > < span class = cF9 > U32 < / span > < span class = cF0 > xid , < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * data , < / span > < span class = cF9 > I64 < / span > < span class = cF0 > length ,
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< a name = " l241 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * your_ip_out ,
< a name = " l242 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * dns_ip_out ,
< a name = " l243 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * router_ip_out ,
< a name = " l244 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * subnet_mask_out )
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< a name = " l245 " > < / a > {
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< a name = " l246 " > < / a > CDHCPHeader * header ;
< a name = " l247 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > error = DHCPBeginParse ( & amp ; data , & amp ; length , & amp ; header ) ;
< a name = " l248 " > < / a > < / span > < span class = cF1 > Bool < / span > < span class = cF0 > have_type = < / span > < span class = cF3 > FALSE < / span > < span class = cF0 > ;
< a name = " l249 " > < / a > < / span > < span class = cF1 > Bool < / span > < span class = cF0 > have_dns = < / span > < span class = cF3 > FALSE < / span > < span class = cF0 > ;
< a name = " l250 " > < / a > < / span > < span class = cF1 > Bool < / span > < span class = cF0 > have_router = < / span > < span class = cF3 > FALSE < / span > < span class = cF0 > ;
< a name = " l251 " > < / a > < / span > < span class = cF1 > Bool < / span > < span class = cF0 > have_subnet = < / span > < span class = cF3 > FALSE < / span > < span class = cF0 > ;
< a name = " l252 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > type ;
< a name = " l253 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > value_length ;
< a name = " l254 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * value ;
< a name = " l255 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > address ;
< a name = " l256 " > < / a >
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< a name = " l257 " > < / a >
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< a name = " l258 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( < / span > < span class = cF5 > EndianU32 < / span > < span class = cF7 > ( < / span > < span class = cF0 > header - & gt ; xid < / span > < span class = cF7 > ) < / span > < span class = cF0 > ! = xid )
< a name = " l259 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l260 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP PARSE OFFER : Failed , parsed and parameter Transaction IDs do not match . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l261 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > - < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l262 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l263 " > < / a >
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< a name = " l264 " > < / a > < / span > < span class = cF1 > while < / span > < span class = cF0 > ( length )
< a name = " l265 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l266 " > < / a > error = DHCPOptionParse ( & amp ; data , & amp ; length , & amp ; type , & amp ; value_length , & amp ; value ) ;
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< a name = " l267 " > < / a >
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< a name = " l268 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l269 " > < / a > {
< a name = " l270 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP PARSE OFFER : Failed at DHCP Parse Option . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l271 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > error ;
< a name = " l272 " > < / a > }
< a name = " l273 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error = = < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l274 " > < / a > {
< a name = " l275 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
< a name = " l276 " > < / a > }
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< a name = " l277 " > < / a >
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< a name = " l278 " > < / a > address = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( * value < / span > < span class = cF7 > ( < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * < / span > < span class = cF7 > ) < / span > < span class = cF0 > ) ;
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< a name = " l279 " > < / a >
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< a name = " l280 " > < / a > < / span > < span class = cF1 > switch < / span > < span class = cF0 > ( type )
< a name = " l281 " > < / a > {
< a name = " l282 " > < / a > < / span > < span class = cF1 > case < / span > < span class = cF0 > DHCP_OPTION_MESSAGETYPE :
< a name = " l283 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DHCP PARSE OFFER : Parsed Option , Type MESSAGETYPE . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l284 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( value_length = = < / span > < span class = cFE > 1 < / span > < span class = cF0 > & amp ; & amp ; value [ < / span > < span class = cFE > 0 < / span > < span class = cF0 > ] = = DHCP_MESSAGETYPE_OFFER )
< a name = " l285 " > < / a > have_type = < / span > < span class = cF3 > TRUE < / span > < span class = cF0 > ;
< a name = " l286 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
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< a name = " l287 " > < / a >
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< a name = " l288 " > < / a > < / span > < span class = cF1 > case < / span > < span class = cF0 > DHCP_OPTION_DNS :
< a name = " l289 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DHCP PARSE OFFER : Parsed Option , Type DNS . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l290 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( value_length = = < / span > < span class = cFE > 4 < / span > < span class = cF0 > )
< a name = " l291 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l292 " > < / a > * dns_ip_out = address ;
< a name = " l293 " > < / a > have_dns = < / span > < span class = cF3 > TRUE < / span > < span class = cF0 > ;
< a name = " l294 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
< a name = " l295 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
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< a name = " l296 " > < / a >
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< a name = " l297 " > < / a > < / span > < span class = cF1 > case < / span > < span class = cF0 > DHCP_OPTION_ROUTER :
< a name = " l298 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DHCP PARSE OFFER : Parsed Option , Type ROUTER . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l299 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( value_length = = < / span > < span class = cFE > 4 < / span > < span class = cF0 > )
< a name = " l300 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l301 " > < / a > * router_ip_out = address ;
< a name = " l302 " > < / a > have_router = < / span > < span class = cF3 > TRUE < / span > < span class = cF0 > ;
< a name = " l303 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
< a name = " l304 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
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< a name = " l305 " > < / a >
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< a name = " l306 " > < / a > < / span > < span class = cF1 > case < / span > < span class = cF0 > DHCP_OPTION_SUBNET_MASK :
< a name = " l307 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DHCP PARSE OFFER : Parsed Option , Type SUBNET MASK . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l308 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( value_length = = < / span > < span class = cFE > 4 < / span > < span class = cF0 > )
< a name = " l309 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l310 " > < / a > * subnet_mask_out = address ;
< a name = " l311 " > < / a > have_subnet = < / span > < span class = cF3 > TRUE < / span > < span class = cF0 > ;
< a name = " l312 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
< a name = " l313 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
< a name = " l314 " > < / a > }
< a name = " l315 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l316 " > < / a >
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< a name = " l317 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( have_type & amp ; & amp ; have_dns & amp ; & amp ; have_subnet & amp ; & amp ; have_router )
< a name = " l318 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l319 " > < / a > * your_ip_out = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( header - & gt ; your_ip ) ;
< a name = " l320 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DHCP PARSE OFFER : Success , got your - ip from DHCP Header . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l321 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l322 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
< a name = " l323 " > < / a > < / span > < span class = cF1 > else < / span > < span class = cF0 >
< a name = " l324 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l325 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP PARSE OFFER : Failed , did not have needed Options . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l326 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; have_type : % Z & quot ; < / span > < span class = cF0 > , have_type , < / span > < span class = cF6 > & quot ; ST_FALSE_TRUE & quot ; < / span > < span class = cF0 > ) ;
< a name = " l327 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; have_dns : % Z & quot ; < / span > < span class = cF0 > , have_dns , < / span > < span class = cF6 > & quot ; ST_FALSE_TRUE & quot ; < / span > < span class = cF0 > ) ;
< a name = " l328 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; have_router : % Z & quot ; < / span > < span class = cF0 > , have_router , < / span > < span class = cF6 > & quot ; ST_FALSE_TRUE & quot ; < / span > < span class = cF0 > ) ;
< a name = " l329 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; have_subnet : % Z & quot ; < / span > < span class = cF0 > , have_subnet , < / span > < span class = cF6 > & quot ; ST_FALSE_TRUE & quot ; < / span > < span class = cF0 > ) ;
< a name = " l330 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > - < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l331 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l332 " > < / a > }
< a name = " l333 " > < / a >
< a name = " l334 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > DHCPAckParse ( < / span > < span class = cF9 > U32 < / span > < span class = cF0 > xid , < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * data , < / span > < span class = cF9 > I64 < / span > < span class = cF0 > length )
< a name = " l335 " > < / a > {
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< a name = " l336 " > < / a > CDHCPHeader * header ;
< a name = " l337 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > error = DHCPBeginParse ( & amp ; data , & amp ; length , & amp ; header ) ;
< a name = " l338 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > type ;
< a name = " l339 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > value_length ;
< a name = " l340 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > * value ;
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< a name = " l341 " > < / a >
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< a name = " l342 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( < / span > < span class = cF5 > EndianU32 < / span > < span class = cF7 > ( < / span > < span class = cF0 > header - & gt ; xid < / span > < span class = cF7 > ) < / span > < span class = cF0 > ! = xid )
< a name = " l343 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l344 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP PARSE ACK : Failed , parsed and parameter Transaction IDs do not match . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l345 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > - < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l346 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l347 " > < / a >
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< a name = " l348 " > < / a > < / span > < span class = cF1 > while < / span > < span class = cF0 > ( length )
< a name = " l349 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l350 " > < / a > error = DHCPOptionParse ( & amp ; data , & amp ; length , & amp ; type , & amp ; value_length , & amp ; value ) ;
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< a name = " l351 " > < / a >
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< a name = " l352 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l353 " > < / a > {
< a name = " l354 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP PARSE ACK : Failed at DHCP Parse Option . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l355 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > error ;
< a name = " l356 " > < / a > }
< a name = " l357 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error = = < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l358 " > < / a > {
< a name = " l359 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
< a name = " l360 " > < / a > }
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< a name = " l361 " > < / a >
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< a name = " l362 " > < / a > < / span > < span class = cF1 > switch < / span > < span class = cF0 > ( type )
< a name = " l363 " > < / a > {
< a name = " l364 " > < / a > < / span > < span class = cF1 > case < / span > < span class = cF0 > DHCP_OPTION_MESSAGETYPE :
< a name = " l365 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( value_length = = < / span > < span class = cFE > 1 < / span > < span class = cF0 > & amp ; & amp ; value [ < / span > < span class = cFE > 0 < / span > < span class = cF0 > ] = = DHCP_MESSAGETYPE_ACK )
< a name = " l366 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l367 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
< a name = " l368 " > < / a > }
< a name = " l369 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l370 " > < / a >
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< a name = " l371 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP PARSE ACK : Failed . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l372 " > < / 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 = " l373 " > < / a > }
< a name = " l374 " > < / a >
< a name = " l375 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > DHCPInnerConfigure ( CUDPSocket * udp_socket ,
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< a name = " l376 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * your_ip_out ,
< a name = " l377 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * dns_ip_out ,
< a name = " l378 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * router_ip_out ,
< a name = " l379 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > * subnet_mask_out )
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< a name = " l380 " > < / a > {
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< a name = " l381 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > state = DHCP_STATE_CLIENT_START ;
< a name = " l382 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > retries = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l383 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > timeout = DHCP_TIMEOUT ;
< a name = " l384 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > error = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l385 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > xid ;
< a name = " l386 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > dhcp_addr ;
< a name = " l387 " > < / a > < / span > < span class = cF1 > U8 < / span > < span class = cF0 > buffer [ < / span > < span class = cFE > 2048 < / span > < span class = cF0 > ] ;
< a name = " l388 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > count ;
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< a name = " l389 " > < / a >
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< a name = " l390 " > < / a > CSocketAddressIPV4 ipv4_addr ;
< a name = " l391 " > < / a > CSocketAddressIPV4 ipv4_addr_in ;
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< a name = " l392 " > < / a >
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< a name = " l393 " > < / a > < / span > < span class = cF2 > //Shrine: setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO_MS, &timeout, sizeof(timeout)))</span><span class=cF0>
< a name = " l394 " > < / a > udp_socket - & gt ; receive_timeout_ms = timeout ;
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< a name = " l395 " > < / a >
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< a name = " l396 " > < / a > ipv4_addr . family = AF_INET ;
< a name = " l397 " > < / a > ipv4_addr . port = < / span > < span class = cF5 > EndianU16 < / span > < span class = cF0 > ( < / span > < span class = cFE > 68 < / span > < span class = cF0 > ) ;
< a name = " l398 " > < / a > ipv4_addr . address . address = INADDR_ANY ;
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< a name = " l399 " > < / a >
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< a name = " l400 " > < / 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 > & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l401 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l402 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Failed to Bind UDP Socket . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l403 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > - < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l404 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l405 " > < / a >
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< a name = " l406 " > < / a > xid = DHCPTransactionBegin ;
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< a name = " l407 " > < / a >
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< a name = " l408 " > < / a > < / span > < span class = cF1 > while < / span > < span class = cF0 > ( state ! = DHCP_STATE_CLIENT_REQ_ACCEPTED )
< a name = " l409 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l410 " > < / a > < / span > < span class = cF1 > switch < / span > < span class = cF0 > ( state )
< a name = " l411 " > < / a > {
< a name = " l412 " > < / a > < / span > < span class = cF1 > case < / span > < span class = cF0 > DHCP_STATE_CLIENT_START :
< a name = " l413 " > < / a > state = DHCP_STATE_CLIENT_DISCOVER ;
< a name = " l414 " > < / a > retries = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
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< a name = " l415 " > < / a >
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< a name = " l416 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
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< a name = " l417 " > < / a >
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< a name = " l418 " > < / a > < / span > < span class = cF1 > case < / span > < span class = cF0 > DHCP_STATE_CLIENT_DISCOVER :
< a name = " l419 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Trying Discover . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l420 " > < / a > error = DHCPDiscoverSend ( xid ) ;
< a name = " l421 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l422 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l423 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Failed , DHCP Send Discover error . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l424 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > error ;
< a name = " l425 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l426 " > < / a >
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< a name = " l427 " > < / 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 = " l428 " > < / a >
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< a name = " l429 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( count & gt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l430 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 > < / span > < span class = cF2 > // 'Try a parse offer'</span><span class=cF0>
< a name = " l431 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Trying Parse Offer . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l432 " > < / a > error = DHCPOfferParse ( xid , buffer , count , your_ip_out , dns_ip_out , router_ip_out , subnet_mask_out ) ;
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< a name = " l433 " > < / a >
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< a name = " l434 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l435 " > < / a > NetWarn ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Unsuccessful DHCP Parse Offer . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l436 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l437 " > < / a >
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< a name = " l438 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( count & gt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > & amp ; & amp ; error & gt ; = < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l439 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l440 " > < / a > dhcp_addr = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( ipv4_addr_in . address . address ) ;
< a name = " l441 " > < / a > state = DHCP_STATE_CLIENT_REQUEST ;
< a name = " l442 " > < / a > retries = < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l443 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
< a name = " l444 " > < / a > < / span > < span class = cF1 > else < / span > < span class = cF0 > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( + + retries = = DHCP_MAX_RETRIES )
< a name = " l445 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l446 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Failed , hit max retries in DHCP DISCOVER state . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l447 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > - < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l448 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l449 " > < / a >
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< a name = " l450 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
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< a name = " l451 " > < / a >
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< a name = " l452 " > < / a > < / span > < span class = cF1 > case < / span > < span class = cF0 > DHCP_STATE_CLIENT_REQUEST :
< a name = " l453 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Trying Send Request . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l454 " > < / a > error = DHCPRequestSend ( xid , * your_ip_out , dhcp_addr ) ;
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< a name = " l455 " > < / a >
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< a name = " l456 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l457 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l458 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Failed , unsuccessful DHCP Send Request . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l459 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > error ;
< a name = " l460 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l461 " > < / a >
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< a name = " l462 " > < / 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 = " l463 " > < / a >
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< a name = " l464 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( count & gt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l465 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 > < / span > < span class = cF2 > // 'Try parse Ack'</span><span class=cF0>
< a name = " l466 " > < / a > error = DHCPAckParse ( xid , buffer , count ) ;
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< a name = " l467 " > < / a >
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< a name = " l468 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l469 " > < / a > NetWarn ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Unsuccessful DHCP Parse Ack . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l470 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l471 " > < / a >
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< a name = " l472 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( count & gt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > & amp ; & amp ; error & gt ; = < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l473 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l474 " > < / a > dhcp_addr = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( ipv4_addr_in . address . address ) ;
< a name = " l475 " > < / a > state = DHCP_STATE_CLIENT_REQ_ACCEPTED ;
< a name = " l476 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
< a name = " l477 " > < / a > < / span > < span class = cF1 > else < / span > < span class = cF0 > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( + + retries = = DHCP_MAX_RETRIES )
< a name = " l478 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l479 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; DHCP CONFIGURE INNER : Failed , hit max retries in DHCP REQUEST state . & quot ; < / span > < span class = cF0 > ) ;
< a name = " l480 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > - < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l481 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l482 " > < / a >
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< a name = " l483 " > < / a > < / span > < span class = cF1 > break < / span > < span class = cF0 > ;
< a name = " l484 " > < / a > }
< a name = " l485 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l486 " > < / a >
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< a name = " l487 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > state ;
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< a name = " l488 " > < / a > }
< a name = " l489 " > < / a >
< a name = " l490 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > DHCPConfigure ( )
< a name = " l491 " > < / a > {
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< a name = " l492 " > < / a > CUDPSocket * udp_socket = UDPSocket ( AF_INET ) ;
< a name = " l493 " > < / a > CIPV4Address address ;
< a name = " l494 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > your_ip ;
< a name = " l495 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > dns_ip ;
< a name = " l496 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > router_ip ;
< a name = " l497 " > < / a > < / span > < span class = cF9 > U32 < / span > < span class = cF0 > subnet_mask ;
< a name = " l498 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > state = DHCPInnerConfigure ( udp_socket , & amp ; your_ip , & amp ; dns_ip , & amp ; router_ip , & amp ; subnet_mask ) ;
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< a name = " l499 " > < / a >
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< a name = " l500 " > < / a > UDPSocketClose ( udp_socket ) ;
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< a name = " l501 " > < / a >
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< a name = " l502 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( state = = DHCP_STATE_CLIENT_REQ_ACCEPTED )
< a name = " l503 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l504 " > < / a > address . address = < / span > < span class = cF5 > EndianU32 < / span > < span class = cF0 > ( your_ip ) ;
< a name = " l505 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; $ BG , 2 $ $ FG , 15 $ DHCP CONFIGURE : Obtained IPV4 Address ! : % s $ BG $ $ FG $ & quot ; < / span > < span class = cF0 > , NetworkToPresentation < / span > < span class = cF7 > ( < / span > < span class = cF0 > AF_INET , & amp ; address < / span > < span class = cF7 > ) < / span > < span class = cF0 > ) ;
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< a name = " l506 " > < / a >
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< a name = " l507 " > < / a > IPV4AddressSet ( your_ip ) ;
< a name = " l508 " > < / a > IPV4SubnetSet ( router_ip , subnet_mask ) ;
< a name = " l509 " > < / a > DNSResolverIPV4Set ( dns_ip ) ;
< a name = " l510 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
< a name = " l511 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
< a name = " l512 " > < / a > < / span > < span class = cF1 > else < / span > < span class = cF0 >
< a name = " l513 " > < / a > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l514 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; $ BG , 4 $ DHCP CONFIGURE : Failed , incorrect state . $ BG $ & quot ; < / span > < span class = cF0 > ) ;
< a name = " l515 " > < / a > < / span > < span class = cF1 > return < / span > < span class = cF0 > - < / span > < span class = cFE > 1 < / span > < span class = cF0 > ;
< a name = " l516 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
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< a name = " l517 " > < / a > }
< a name = " l518 " > < / a >
< a name = " l519 " > < / a >
< a name = " l520 " > < / a > < / span > < span class = cF1 > U0 < / span > < span class = cF0 > NetConfigure ( )
< a name = " l521 " > < / a > {
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< a name = " l522 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > error ;
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< a name = " l523 " > < / a >
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< a name = " l524 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; \ n = = = = Configuring Network . = = = = \ n & quot ; < / span > < span class = cF0 > ) ;
< a name = " l525 " > < / a > error = DHCPConfigure ;
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< a name = " l526 " > < / a >
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< a name = " l527 " > < / a > < / span > < span class = cF1 > if < / span > < span class = cF0 > ( error & lt ; < / span > < span class = cFE > 0 < / span > < span class = cF0 > )
< a name = " l528 " > < / a > NetErr ( < / span > < span class = cF6 > & quot ; = = = = Network Configure Failed = = = = & quot ; < / span > < span class = cF0 > ) ;
< a name = " l529 " > < / a > < / span > < span class = cF1 > else < / span > < span class = cF0 >
< a name = " l530 " > < / a > NetLog ( < / span > < span class = cF6 > & quot ; $ BG , 2 $ $ FG , 15 $ = = = = Network Configure Success = = = = $ FG $ $ BG $ & quot ; < / span > < span class = cF0 > ) ;
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< a name = " l531 " > < / a > }
< a name = " l532 " > < / a >
< a name = " l533 " > < / a > < / span > < span class = cF1 > U0 < / span > < span class = cF0 > NetRep ( )
< a name = " l534 " > < / a > {
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< a name = " l535 " > < / a > < / span > < span class = cF6 > & quot ; \ n $ LTGREEN $ Network Report : $ FG $ \ n \ n & quot ; < / span > < span class = cF0 > ;
< a name = " l536 " > < / a > UDPRep ;
< a name = " l537 " > < / a > TCPRep ;
< a name = " l538 " > < / a > DNSRep ;
< a name = " l539 " > < / a > ARPRep ;
< a name = " l540 " > < / a > IPV4Rep ;
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< a name = " l541 " > < / a > } < / span > < / pre > < / body >
< / html >
