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+--------+-------------------------+-------------------------+--------+--------+
|00000000| 66 69 6c 65 73 63 61 6e | 2f 00 00 00 00 00 00 00 |filescan|/.......|
|00000010| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|000000a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|000001f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000200| 66 69 6c 65 73 63 61 6e | 2f 53 68 61 72 46 69 6c |filescan|/SharFil|
|00000210| 65 2e 48 65 61 64 65 72 | 73 00 00 00 00 00 00 00 |e.Header|s.......|
|00000220| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000230| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00000250| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00000280| 20 20 20 20 33 37 31 20 | 20 34 35 30 36 34 36 37 |    371 | 4506467|
|00000290| 34 33 33 20 20 31 30 36 | 33 30 00 20 00 00 00 00 |433  106|30. ....|
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|00000400| 3d 3d 3d 20 66 69 6c 65 | 73 63 61 6e 2e 73 68 61 |=== file|scan.sha|
|00000410| 72 20 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |r ======|========|
|00000420| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 0a 46 72 6f 6d |========|===.From|
|00000430| 20 72 69 61 63 73 21 65 | 6f 73 21 61 6d 65 73 21 | riacs!e|os!ames!|
|00000440| 73 75 6e 2d 62 61 72 72 | 21 63 73 2e 75 74 65 78 |sun-barr|!cs.utex|
|00000450| 61 73 2e 65 64 75 21 75 | 75 6e 65 74 21 61 6c 6c |as.edu!u|unet!all|
|00000460| 62 65 72 79 20 46 72 69 | 20 53 65 70 20 31 35 20 |bery Fri| Sep 15 |
|00000470| 30 38 3a 34 32 3a 33 36 | 20 50 44 54 20 31 39 38 |08:42:36| PDT 198|
|00000480| 39 0a 0a 50 6f 73 74 69 | 6e 67 2d 6e 75 6d 62 65 |9..Posti|ng-numbe|
|00000490| 72 3a 20 56 6f 6c 75 6d | 65 20 38 2c 20 49 73 73 |r: Volum|e 8, Iss|
|000004a0| 75 65 20 34 32 0a 53 75 | 62 6d 69 74 74 65 64 2d |ue 42.Su|bmitted-|
|000004b0| 62 79 3a 20 6d 6a 72 40 | 77 65 6c 63 68 6c 61 62 |by: mjr@|welchlab|
|000004c0| 2e 77 65 6c 63 68 2e 6a | 68 75 2e 65 64 75 20 28 |.welch.j|hu.edu (|
|000004d0| 4d 61 72 63 75 73 20 4a | 2e 20 52 61 6e 75 6d 29 |Marcus J|. Ranum)|
|000004e0| 0a 41 72 63 68 69 76 65 | 2d 6e 61 6d 65 3a 20 66 |.Archive|-name: f|
|000004f0| 69 6c 65 73 63 61 6e 0a | 0a 00 00 00 00 00 00 00 |ilescan.|........|
|00000500| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|000005f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000600| 66 69 6c 65 73 63 61 6e | 2f 52 45 41 44 4d 45 00 |filescan|/README.|
|00000610| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000620| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|000007d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|000007f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000800| 0a 09 54 68 69 73 20 69 | 73 20 61 20 66 61 69 72 |..This i|s a fair|
|00000810| 6c 79 20 73 69 6d 70 6c | 65 20 6c 69 74 74 6c 65 |ly simpl|e little|
|00000820| 20 70 72 6f 67 72 61 6d | 20 49 20 77 68 69 70 70 | program| I whipp|
|00000830| 65 64 20 75 70 20 61 66 | 74 65 72 20 49 20 72 65 |ed up af|ter I re|
|00000840| 61 64 0a 74 68 65 20 43 | 45 52 54 20 6d 65 73 73 |ad.the C|ERT mess|
|00000850| 61 67 65 73 20 61 62 6f | 75 74 20 76 65 72 73 69 |ages abo|ut versi|
|00000860| 6f 6e 73 20 6f 66 20 74 | 65 6c 6e 65 74 28 31 29 |ons of t|elnet(1)|
|00000870| 20 74 68 61 74 20 73 6e | 61 67 67 65 64 20 70 61 | that sn|agged pa|
|00000880| 73 73 77 6f 72 64 73 2e | 20 49 74 0a 72 65 61 64 |sswords.| It.read|
|00000890| 73 20 61 20 6c 69 73 74 | 20 6f 66 20 66 69 6c 65 |s a list| of file|
|000008a0| 73 20 61 6e 64 20 63 68 | 65 63 6b 73 20 74 68 65 |s and ch|ecks the|
|000008b0| 6d 20 61 67 61 69 6e 73 | 74 20 73 74 6f 72 65 64 |m agains|t stored|
|000008c0| 20 69 6e 66 6f 72 6d 61 | 74 69 6f 6e 20 74 6f 20 | informa|tion to |
|000008d0| 73 65 65 0a 69 66 20 74 | 68 65 20 66 69 6c 65 73 |see.if t|he files|
|000008e0| 20 68 61 76 65 20 62 65 | 65 6e 20 6d 6f 6e 6b 65 | have be|en monke|
|000008f0| 79 65 64 20 77 69 74 68 | 2e 0a 0a 09 49 20 64 6f |yed with|....I do|
|00000900| 6e 27 74 20 74 68 69 6e | 6b 20 74 68 69 73 20 73 |n't thin|k this s|
|00000910| 6f 66 74 77 61 72 65 20 | 69 73 20 61 20 70 61 6e |oftware |is a pan|
|00000920| 61 63 65 61 20 66 6f 72 | 20 74 72 6f 6a 61 6e 20 |acea for| trojan |
|00000930| 68 6f 72 73 65 73 20 61 | 6e 64 0a 73 75 63 68 20 |horses a|nd.such |
|00000940| 66 6f 72 6d 73 20 6f 66 | 20 61 74 74 61 63 6b 2c |forms of| attack,|
|00000950| 20 62 75 74 20 49 20 2a | 64 6f 2a 20 74 68 69 6e | but I *|do* thin|
|00000960| 6b 20 69 74 27 73 20 61 | 20 73 74 65 70 2c 20 61 |k it's a| step, a|
|00000970| 6e 64 20 49 20 68 6f 70 | 65 20 69 74 73 20 66 6c |nd I hop|e its fl|
|00000980| 61 77 73 0a 74 72 69 67 | 67 65 72 20 6d 6f 72 65 |aws.trig|ger more|
|00000990| 20 69 6e 2d 64 65 70 74 | 68 20 61 70 70 72 6f 61 | in-dept|h approa|
|000009a0| 63 68 65 73 20 74 6f 20 | 74 68 65 73 65 20 70 72 |ches to |these pr|
|000009b0| 6f 62 6c 65 6d 73 2e 20 | 57 68 65 74 68 65 72 20 |oblems. |Whether |
|000009c0| 69 74 20 62 65 63 6f 6d | 65 73 20 61 0a 75 73 65 |it becom|es a.use|
|000009d0| 66 75 6c 20 73 65 63 75 | 72 69 74 79 20 74 6f 6f |ful secu|rity too|
|000009e0| 6c 2c 20 49 27 76 65 20 | 61 6c 72 65 61 64 79 20 |l, I've |already |
|000009f0| 72 65 61 6c 69 7a 65 64 | 20 69 74 20 6d 61 79 20 |realized| it may |
|00000a00| 73 61 76 65 20 6d 65 20 | 61 20 6c 6f 74 20 6f 66 |save me |a lot of|
|00000a10| 20 77 6f 72 6b 0a 6d 61 | 6b 69 6e 67 20 73 75 72 | work.ma|king sur|
|00000a20| 65 20 74 68 61 74 20 6d | 6f 64 69 66 69 65 64 20 |e that m|odified |
|00000a30| 66 69 6c 65 73 20 61 72 | 65 20 70 72 6f 70 65 72 |files ar|e proper|
|00000a40| 6c 79 20 63 61 72 72 69 | 65 64 20 66 6f 72 77 61 |ly carri|ed forwa|
|00000a50| 72 64 20 61 63 72 6f 73 | 73 0a 6f 70 65 72 61 74 |rd acros|s.operat|
|00000a60| 69 6e 67 20 73 79 73 74 | 65 6d 20 72 65 76 69 73 |ing syst|em revis|
|00000a70| 69 6f 6e 73 20 3a 2d 29 | 0a 0a 09 43 75 72 72 65 |ions :-)|...Curre|
|00000a80| 6e 74 6c 79 20 74 68 65 | 20 63 6f 64 65 20 69 73 |ntly the| code is|
|00000a90| 20 70 72 65 74 74 79 20 | 55 4e 49 58 20 73 70 65 | pretty |UNIX spe|
|00000aa0| 63 69 66 69 63 2c 20 74 | 68 6f 75 67 68 20 61 6e |cific, t|hough an|
|00000ab0| 79 20 6d 61 63 68 69 6e | 65 0a 77 69 74 68 20 64 |y machin|e.with d|
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|00000ad0| 65 6e 74 2c 20 61 20 73 | 74 61 74 28 32 29 20 6f |ent, a s|tat(2) o|
|00000ae0| 72 20 65 71 75 69 76 61 | 6c 65 6e 74 20 73 79 73 |r equiva|lent sys|
|00000af0| 74 65 6d 20 63 61 6c 6c | 2c 20 61 6e 64 20 61 0a |tem call|, and a.|
|00000b00| 64 69 72 65 63 74 6f 72 | 79 20 6c 69 73 74 65 72 |director|y lister|
|00000b10| 20 6c 69 6b 65 20 66 69 | 6e 64 28 31 29 20 63 6f | like fi|nd(1) co|
|00000b20| 75 6c 64 20 75 73 65 20 | 69 74 2e 20 54 68 65 72 |uld use |it. Ther|
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|00000b40| 72 6b 6c 69 73 6d 73 0a | 69 6e 20 74 68 65 20 63 |rklisms.|in the c|
|00000b50| 6f 64 65 2c 20 62 75 74 | 20 49 20 61 73 73 75 72 |ode, but| I assur|
|00000b60| 65 20 79 6f 75 20 74 68 | 65 72 65 20 61 72 65 20 |e you th|ere are |
|00000b70| 6e 6f 20 4e 55 4c 4c 20 | 64 65 72 65 66 73 20 6f |no NULL |derefs o|
|00000b80| 72 20 61 6e 79 20 6f 66 | 20 74 68 61 74 0a 63 72 |r any of| that.cr|
|00000b90| 61 70 2e 0a 0a 09 41 6e | 79 68 6f 77 2c 20 64 6f |ap....An|yhow, do|
|00000ba0| 20 77 69 74 68 20 74 68 | 69 73 20 77 68 61 74 20 | with th|is what |
|00000bb0| 79 6f 75 20 77 69 6c 6c | 2e 20 48 6f 70 65 66 75 |you will|. Hopefu|
|00000bc0| 6c 6c 79 20 69 74 20 6d | 61 79 20 68 65 6c 70 0a |lly it m|ay help.|
|00000bd0| 73 6f 6d 65 6f 6e 65 2e | 0a 0a 2d 2d 6d 6a 72 28 |someone.|..--mjr(|
|00000be0| 29 3b 0a 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |);......|........|
|00000bf0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000c00| 66 69 6c 65 73 63 61 6e | 2f 4d 61 6b 65 66 69 6c |filescan|/Makefil|
|00000c10| 65 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |e.......|........|
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|00000c80| 20 20 20 31 34 34 32 20 | 20 34 35 30 36 34 36 37 |   1442 | 4506467|
|00000c90| 34 32 37 20 20 20 37 33 | 32 31 00 20 00 00 00 00 |427   73|21. ....|
|00000ca0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00000e00| 23 0a 23 09 4d 61 6b 65 | 66 69 6c 65 20 66 6f 72 |#.#.Make|file for|
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|00000e20| 75 6d 6d 65 72 20 61 6e | 64 20 73 63 61 6e 6e 65 |ummer an|d scanne|
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|00000e40| 43 29 2c 20 4d 61 72 63 | 75 73 20 4a 2e 20 52 61 |C), Marc|us J. Ra|
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|00000e70| 09 54 68 69 73 20 63 6f | 64 65 20 6d 61 79 20 62 |.This co|de may b|
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|00000e90| 75 74 65 64 20 61 73 20 | 6c 6f 6e 67 20 61 73 20 |uted as |long as |
|00000ea0| 74 68 69 73 20 68 65 61 | 64 65 72 0a 23 09 72 65 |this hea|der.#.re|
|00000eb0| 6d 61 69 6e 73 20 69 6e | 74 61 63 74 2e 20 4e 6f |mains in|tact. No|
|00000ec0| 20 77 61 72 72 61 6e 74 | 69 65 73 20 61 72 65 20 | warrant|ies are |
|00000ed0| 65 78 70 72 65 73 73 65 | 64 20 6f 72 20 69 6d 70 |expresse|d or imp|
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|00000ef0| 20 73 75 69 74 61 62 69 | 6c 69 74 79 20 6f 66 20 | suitabi|lity of |
|00000f00| 74 68 69 73 20 73 6f 66 | 74 77 61 72 65 20 66 6f |this sof|tware fo|
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|00000f20| 20 61 6c 6c 2e 0a 23 0a | 23 09 24 48 65 61 64 65 | all..#.|#.$Heade|
|00000f30| 72 3a 20 4d 61 6b 65 66 | 69 6c 65 2c 76 20 31 2e |r: Makef|ile,v 1.|
|00000f40| 31 20 38 39 2f 30 39 2f | 31 33 20 31 34 3a 32 31 |1 89/09/|13 14:21|
|00000f50| 3a 33 31 20 6d 6a 72 20 | 52 65 6c 20 24 0a 23 0a |:31 mjr |Rel $.#.|
|00000f60| 0a 49 4e 53 44 49 52 3d | 2f 75 73 72 2f 65 74 63 |.INSDIR=|/usr/etc|
|00000f70| 0a 4d 41 4e 44 49 52 3d | 2f 75 73 72 2f 6d 61 6e |.MANDIR=|/usr/man|
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|00001d20| 66 64 3b 0a 0a 09 09 28 | 76 6f 69 64 29 73 70 72 |fd;....(|void)spr|
|00001d30| 69 6e 74 66 28 62 75 66 | 2c 22 25 73 2e 64 69 72 |intf(buf|,"%s.dir|
|00001d40| 22 2c 64 62 66 69 6c 65 | 29 3b 0a 09 09 69 66 28 |",dbfile|);...if(|
|00001d50| 28 77 66 64 20 3d 20 6f | 70 65 6e 28 62 75 66 2c |(wfd = o|pen(buf,|
|00001d60| 4f 5f 52 44 57 52 7c 4f | 5f 54 52 55 4e 43 7c 4f |O_RDWR|O|_TRUNC|O|
|00001d70| 5f 43 52 45 41 54 2c 30 | 36 30 30 29 29 20 3c 20 |_CREAT,0|600)) < |
|00001d80| 30 29 20 7b 0a 09 09 09 | 28 76 6f 69 64 29 66 70 |0) {....|(void)fp|
|00001d90| 72 69 6e 74 66 28 73 74 | 64 65 72 72 2c 22 63 61 |rintf(st|derr,"ca|
|00001da0| 6e 6e 6f 74 20 63 72 65 | 61 74 65 20 22 29 3b 0a |nnot cre|ate ");.|
|00001db0| 09 09 09 70 65 72 72 6f | 72 28 62 75 66 29 3b 0a |...perro|r(buf);.|
|00001dc0| 09 09 09 65 78 69 74 28 | 31 29 3b 0a 09 09 7d 0a |...exit(|1);...}.|
|00001dd0| 09 09 28 76 6f 69 64 29 | 63 6c 6f 73 65 28 77 66 |..(void)|close(wf|
|00001de0| 64 29 3b 0a 09 09 28 76 | 6f 69 64 29 73 70 72 69 |d);...(v|oid)spri|
|00001df0| 6e 74 66 28 62 75 66 2c | 22 25 73 2e 70 61 67 22 |ntf(buf,|"%s.pag"|
|00001e00| 2c 64 62 66 69 6c 65 29 | 3b 0a 09 09 69 66 28 28 |,dbfile)|;...if((|
|00001e10| 77 66 64 20 3d 20 6f 70 | 65 6e 28 62 75 66 2c 4f |wfd = op|en(buf,O|
|00001e20| 5f 52 44 57 52 7c 4f 5f | 54 52 55 4e 43 7c 4f 5f |_RDWR|O_|TRUNC|O_|
|00001e30| 43 52 45 41 54 2c 30 36 | 30 30 29 29 20 3c 20 30 |CREAT,06|00)) < 0|
|00001e40| 29 20 7b 0a 09 09 09 28 | 76 6f 69 64 29 66 70 72 |) {....(|void)fpr|
|00001e50| 69 6e 74 66 28 73 74 64 | 65 72 72 2c 22 63 61 6e |intf(std|err,"can|
|00001e60| 6e 6f 74 20 63 72 65 61 | 74 65 20 22 29 3b 0a 09 |not crea|te ");..|
|00001e70| 09 09 70 65 72 72 6f 72 | 28 62 75 66 29 3b 0a 09 |..perror|(buf);..|
|00001e80| 09 09 65 78 69 74 28 31 | 29 3b 0a 09 09 7d 0a 09 |..exit(1|);...}..|
|00001e90| 09 28 76 6f 69 64 29 63 | 6c 6f 73 65 28 77 66 64 |.(void)c|lose(wfd|
|00001ea0| 29 3b 0a 09 7d 0a 23 65 | 6e 64 69 66 0a 0a 0a 23 |);..}.#e|ndif...#|
|00001eb0| 69 66 64 65 66 09 44 42 | 4d 0a 09 2f 2a 20 6f 70 |ifdef.DB|M../* op|
|00001ec0| 65 6e 20 64 61 74 61 20 | 66 69 6c 65 73 2e 20 44 |en data |files. D|
|00001ed0| 42 4d 20 69 73 20 67 6c | 6f 62 61 6c 2c 20 73 6f |BM is gl|obal, so|
|00001ee0| 20 77 68 61 74 20 74 68 | 65 20 68 65 79 20 2a 2f | what th|e hey */|
|00001ef0| 0a 09 69 66 20 28 64 62 | 6d 69 6e 69 74 28 64 62 |..if (db|minit(db|
|00001f00| 66 69 6c 65 29 20 3c 20 | 30 29 20 7b 0a 09 09 28 |file) < |0) {...(|
|00001f10| 76 6f 69 64 29 66 70 72 | 69 6e 74 66 28 73 74 64 |void)fpr|intf(std|
|00001f20| 65 72 72 2c 22 63 61 6e | 6e 6f 74 20 6f 70 65 6e |err,"can|not open|
|00001f30| 20 64 61 74 61 62 61 73 | 65 20 25 73 5c 6e 22 2c | databas|e %s\n",|
|00001f40| 64 62 66 69 6c 65 29 3b | 0a 09 09 65 78 69 74 28 |dbfile);|...exit(|
|00001f50| 31 29 3b 0a 09 7d 0a 23 | 65 6e 64 69 66 0a 0a 23 |1);..}.#|endif..#|
|00001f60| 69 66 64 65 66 09 4e 44 | 42 4d 0a 09 69 66 28 28 |ifdef.ND|BM..if((|
|00001f70| 64 62 66 20 3d 20 64 62 | 6d 5f 6f 70 65 6e 28 64 |dbf = db|m_open(d|
|00001f80| 62 66 69 6c 65 2c 4f 5f | 52 44 57 52 7c 4f 5f 43 |bfile,O_|RDWR|O_C|
|00001f90| 52 45 41 54 2c 30 36 30 | 30 29 29 20 3d 3d 20 4e |REAT,060|0)) == N|
|00001fa0| 55 4c 4c 29 20 7b 0a 09 | 09 28 76 6f 69 64 29 66 |ULL) {..|.(void)f|
|00001fb0| 70 72 69 6e 74 66 28 73 | 74 64 65 72 72 2c 22 63 |printf(s|tderr,"c|
|00001fc0| 61 6e 6e 6f 74 20 6f 70 | 65 6e 20 64 61 74 61 62 |annot op|en datab|
|00001fd0| 61 73 65 20 25 73 5c 6e | 22 2c 64 62 66 69 6c 65 |ase %s\n|",dbfile|
|00001fe0| 29 3b 0a 09 09 65 78 69 | 74 28 31 29 3b 0a 09 7d |);...exi|t(1);..}|
|00001ff0| 0a 23 65 6e 64 69 66 0a | 0a 0a 09 2f 2a 20 6d 61 |.#endif.|.../* ma|
|00002000| 69 6e 20 6c 6f 6f 70 2e | 20 72 65 61 64 20 69 6e |in loop.| read in|
|00002010| 70 75 74 20 61 6e 64 20 | 65 69 74 68 65 72 20 73 |put and |either s|
|00002020| 74 6f 72 65 20 69 74 20 | 6f 72 20 63 68 65 63 6b |tore it |or check|
|00002030| 20 69 74 20 2a 2f 0a 09 | 77 68 69 6c 65 28 66 67 | it */..|while(fg|
|00002040| 65 74 73 28 62 75 66 2c | 42 55 46 53 49 5a 2c 69 |ets(buf,|BUFSIZ,i|
|00002050| 6e 66 29 20 21 3d 20 4e | 55 4c 4c 29 20 7b 0a 09 |nf) != N|ULL) {..|
|00002060| 09 63 68 61 72 09 2a 70 | 3b 0a 0a 09 09 2f 2a 20 |.char.*p|;..../* |
|00002070| 64 72 6f 70 20 74 68 65 | 20 6e 65 77 6c 69 6e 65 |drop the| newline|
|00002080| 20 2a 2f 0a 09 09 69 66 | 28 28 70 20 3d 20 72 69 | */...if|((p = ri|
|00002090| 6e 64 65 78 28 62 75 66 | 2c 27 5c 6e 27 29 29 20 |ndex(buf|,'\n')) |
|000020a0| 21 3d 20 4e 55 4c 4c 29 | 0a 09 09 09 2a 70 20 3d |!= NULL)|....*p =|
|000020b0| 20 27 5c 30 27 3b 0a 0a | 09 09 69 66 28 64 6f 63 | '\0';..|..if(doc|
|000020c0| 68 65 63 6b 69 6e 29 0a | 09 09 09 65 72 72 63 6e |heckin).|...errcn|
|000020d0| 74 20 2b 3d 20 73 63 61 | 6e 5f 73 74 6f 72 65 28 |t += sca|n_store(|
|000020e0| 62 75 66 2c 30 29 3b 0a | 09 09 65 6c 73 65 0a 09 |buf,0);.|..else..|
|000020f0| 09 09 65 72 72 63 6e 74 | 20 2b 3d 20 73 63 61 6e |..errcnt| += scan|
|00002100| 5f 63 68 65 63 6b 28 62 | 75 66 2c 26 77 61 72 63 |_check(b|uf,&warc|
|00002110| 6e 74 29 3b 0a 09 7d 0a | 0a 09 2f 2a 20 65 78 69 |nt);..}.|../* exi|
|00002120| 74 20 77 69 74 68 20 64 | 69 66 66 65 72 65 6e 74 |t with d|ifferent|
|00002130| 20 76 61 6c 75 65 73 20 | 64 65 70 65 6e 64 69 6e | values |dependin|
|00002140| 67 20 6f 6e 20 72 65 71 | 75 65 73 74 20 2a 2f 0a |g on req|uest */.|
|00002150| 23 69 66 64 65 66 09 44 | 42 4d 0a 09 28 76 6f 69 |#ifdef.D|BM..(voi|
|00002160| 64 29 64 62 6d 63 6c 6f | 73 65 28 29 3b 0a 23 65 |d)dbmclo|se();.#e|
|00002170| 6e 64 69 66 0a 23 69 66 | 64 65 66 09 4e 44 42 4d |ndif.#if|def.NDBM|
|00002180| 0a 09 28 76 6f 69 64 29 | 64 62 6d 5f 63 6c 6f 73 |..(void)|dbm_clos|
|00002190| 65 28 64 62 66 29 3b 0a | 23 65 6e 64 69 66 0a 09 |e(dbf);.|#endif..|
|000021a0| 65 78 69 74 28 77 66 6c | 67 20 3f 20 77 61 72 63 |exit(wfl|g ? warc|
|000021b0| 6e 74 20 3a 20 65 72 72 | 63 6e 74 29 3b 0a 7d 0a |nt : err|cnt);.}.|
|000021c0| 0a 73 63 61 6e 5f 73 74 | 6f 72 65 28 66 69 6c 2c |.scan_st|ore(fil,|
|000021d0| 73 70 65 63 29 0a 63 68 | 61 72 09 2a 66 69 6c 3b |spec).ch|ar.*fil;|
|000021e0| 0a 63 68 61 72 09 73 70 | 65 63 3b 09 2f 2a 20 6f |.char.sp|ec;./* o|
|000021f0| 76 65 72 72 69 64 65 20 | 2d 20 6d 61 6b 65 20 73 |verride |- make s|
|00002200| 75 72 65 20 63 68 65 63 | 6b 73 75 6d 20 69 73 20 |ure chec|ksum is |
|00002210| 64 6f 6e 65 20 66 6f 72 | 20 75 70 64 61 74 65 20 |done for| update |
|00002220| 2a 2f 0a 7b 0a 09 73 74 | 72 75 63 74 09 73 65 63 |*/.{..st|ruct.sec|
|00002230| 72 65 63 09 73 62 75 66 | 3b 0a 09 64 61 74 75 6d |rec.sbuf|;..datum|
|00002240| 09 6b 65 79 3b 0a 09 64 | 61 74 75 6d 09 63 6f 6e |.key;..d|atum.con|
|00002250| 74 65 6e 74 3b 0a 0a 09 | 69 66 28 73 74 61 74 28 |tent;...|if(stat(|
|00002260| 66 69 6c 2c 26 73 62 75 | 66 2e 73 29 29 20 7b 0a |fil,&sbu|f.s)) {.|
|00002270| 09 09 77 61 72 6e 28 22 | 63 61 6e 6e 6f 74 20 73 |..warn("|cannot s|
|00002280| 74 61 74 22 2c 66 69 6c | 29 3b 0a 09 09 72 65 74 |tat",fil|);...ret|
|00002290| 75 72 6e 28 31 29 3b 0a | 09 7d 0a 0a 09 69 66 28 |urn(1);.|.}...if(|
|000022a0| 73 75 6d 66 6c 67 20 7c | 7c 20 73 70 65 63 29 20 |sumflg ||| spec) |
|000022b0| 7b 0a 09 09 73 62 75 66 | 2e 73 75 6d 20 3d 20 73 |{...sbuf|.sum = s|
|000022c0| 75 6d 69 74 28 66 69 6c | 29 3b 0a 09 09 73 62 75 |umit(fil|);...sbu|
|000022d0| 66 2e 73 75 6d 66 20 3d | 20 31 3b 0a 09 7d 20 65 |f.sumf =| 1;..} e|
|000022e0| 6c 73 65 0a 09 09 73 62 | 75 66 2e 73 75 6d 66 20 |lse...sb|uf.sumf |
|000022f0| 3d 20 30 3b 0a 0a 09 6b | 65 79 2e 64 73 69 7a 65 |= 0;...k|ey.dsize|
|00002300| 20 3d 20 73 74 72 6c 65 | 6e 28 66 69 6c 29 3b 0a | = strle|n(fil);.|
|00002310| 09 6b 65 79 2e 64 70 74 | 72 20 3d 20 66 69 6c 3b |.key.dpt|r = fil;|
|00002320| 0a 09 63 6f 6e 74 65 6e | 74 2e 64 73 69 7a 65 20 |..conten|t.dsize |
|00002330| 3d 20 73 69 7a 65 6f 66 | 28 73 62 75 66 29 3b 0a |= sizeof|(sbuf);.|
|00002340| 09 63 6f 6e 74 65 6e 74 | 2e 64 70 74 72 20 3d 20 |.content|.dptr = |
|00002350| 28 63 68 61 72 20 2a 29 | 26 73 62 75 66 3b 0a 0a |(char *)|&sbuf;..|
|00002360| 23 69 66 64 65 66 09 44 | 42 4d 0a 09 69 66 28 73 |#ifdef.D|BM..if(s|
|00002370| 74 6f 72 65 28 6b 65 79 | 2c 20 63 6f 6e 74 65 6e |tore(key|, conten|
|00002380| 74 29 29 20 7b 0a 09 09 | 77 61 72 6e 28 22 63 61 |t)) {...|warn("ca|
|00002390| 6e 6e 6f 74 20 73 74 6f | 72 65 22 2c 66 69 6c 29 |nnot sto|re",fil)|
|000023a0| 3b 0a 09 09 72 65 74 75 | 72 6e 28 31 29 3b 0a 09 |;...retu|rn(1);..|
|000023b0| 7d 0a 23 65 6e 64 69 66 | 0a 23 69 66 64 65 66 09 |}.#endif|.#ifdef.|
|000023c0| 4e 44 42 4d 0a 09 69 66 | 28 64 62 6d 5f 73 74 6f |NDBM..if|(dbm_sto|
|000023d0| 72 65 28 64 62 66 2c 6b | 65 79 2c 20 63 6f 6e 74 |re(dbf,k|ey, cont|
|000023e0| 65 6e 74 2c 44 42 4d 5f | 52 45 50 4c 41 43 45 29 |ent,DBM_|REPLACE)|
|000023f0| 29 20 7b 0a 09 09 77 61 | 72 6e 28 22 63 61 6e 6e |) {...wa|rn("cann|
|00002400| 6f 74 20 73 74 6f 72 65 | 22 2c 66 69 6c 29 3b 0a |ot store|",fil);.|
|00002410| 09 09 72 65 74 75 72 6e | 28 31 29 3b 0a 09 7d 0a |..return|(1);..}.|
|00002420| 23 65 6e 64 69 66 0a 09 | 72 65 74 75 72 6e 28 30 |#endif..|return(0|
|00002430| 29 3b 0a 7d 0a 0a 73 63 | 61 6e 5f 63 68 65 63 6b |);.}..sc|an_check|
|00002440| 28 66 69 6c 2c 77 61 72 | 6e 69 6e 67 73 29 0a 63 |(fil,war|nings).c|
|00002450| 68 61 72 09 2a 66 69 6c | 3b 0a 69 6e 74 09 2a 77 |har.*fil|;.int.*w|
|00002460| 61 72 6e 69 6e 67 73 3b | 0a 7b 0a 09 73 74 72 75 |arnings;|.{..stru|
|00002470| 63 74 09 73 65 63 72 65 | 63 09 73 70 74 72 3b 0a |ct.secre|c.sptr;.|
|00002480| 09 73 74 72 75 63 74 09 | 73 65 63 72 65 63 09 73 |.struct.|secrec.s|
|00002490| 62 75 66 3b 0a 09 64 61 | 74 75 6d 09 6b 65 79 3b |buf;..da|tum.key;|
|000024a0| 0a 09 64 61 74 75 6d 09 | 63 6f 6e 74 65 6e 74 3b |..datum.|content;|
|000024b0| 0a 09 69 6e 74 09 73 74 | 61 74 65 20 3d 20 30 3b |..int.st|ate = 0;|
|000024c0| 0a 0a 09 69 66 28 73 74 | 61 74 28 66 69 6c 2c 26 |...if(st|at(fil,&|
|000024d0| 73 62 75 66 2e 73 29 29 | 20 7b 0a 09 09 77 61 72 |sbuf.s))| {...war|
|000024e0| 6e 28 22 63 61 6e 6e 6f | 74 20 73 74 61 74 22 2c |n("canno|t stat",|
|000024f0| 66 69 6c 29 3b 0a 09 09 | 2a 77 61 72 6e 69 6e 67 |fil);...|*warning|
|00002500| 73 2b 2b 3b 0a 09 09 72 | 65 74 75 72 6e 28 31 29 |s++;...r|eturn(1)|
|00002510| 3b 0a 09 7d 0a 0a 09 6b | 65 79 2e 64 70 74 72 20 |;..}...k|ey.dptr |
|00002520| 3d 20 66 69 6c 3b 0a 09 | 6b 65 79 2e 64 73 69 7a |= fil;..|key.dsiz|
|00002530| 65 20 3d 20 73 74 72 6c | 65 6e 28 66 69 6c 29 3b |e = strl|en(fil);|
|00002540| 0a 0a 23 69 66 64 65 66 | 09 44 42 4d 0a 09 63 6f |..#ifdef|.DBM..co|
|00002550| 6e 74 65 6e 74 20 3d 20 | 66 65 74 63 68 28 6b 65 |ntent = |fetch(ke|
|00002560| 79 29 3b 0a 23 65 6e 64 | 69 66 0a 23 69 66 64 65 |y);.#end|if.#ifde|
|00002570| 66 09 4e 44 42 4d 0a 09 | 63 6f 6e 74 65 6e 74 20 |f.NDBM..|content |
|00002580| 3d 20 64 62 6d 5f 66 65 | 74 63 68 28 64 62 66 2c |= dbm_fe|tch(dbf,|
|00002590| 6b 65 79 29 3b 0a 23 65 | 6e 64 69 66 0a 0a 09 2f |key);.#e|ndif.../|
|000025a0| 2a 20 69 20 73 75 70 70 | 6f 73 65 20 74 68 61 74 |* i supp|ose that|
|000025b0| 20 6e 6f 74 20 62 65 69 | 6e 67 20 69 6e 20 74 68 | not bei|ng in th|
|000025c0| 65 20 64 61 74 61 62 61 | 73 65 20 69 73 20 61 6e |e databa|se is an|
|000025d0| 20 65 72 72 6f 72 2c 20 | 2a 2f 0a 09 2f 2a 20 6e | error, |*/../* n|
|000025e0| 6f 74 20 61 20 73 65 63 | 75 72 69 74 79 20 76 69 |ot a sec|urity vi|
|000025f0| 6f 6c 61 74 69 6f 6e 2c | 20 69 6e 20 61 73 20 6d |olation,| in as m|
|00002600| 61 6e 79 20 77 6f 72 64 | 73 20 2a 2f 0a 09 69 66 |any word|s */..if|
|00002610| 20 28 63 6f 6e 74 65 6e | 74 2e 64 70 74 72 20 3d | (conten|t.dptr =|
|00002620| 3d 20 30 29 20 7b 0a 09 | 09 77 61 72 6e 28 22 6e |= 0) {..|.warn("n|
|00002630| 6f 20 65 6e 74 72 79 20 | 69 6e 20 64 61 74 61 62 |o entry |in datab|
|00002640| 61 73 65 22 2c 66 69 6c | 29 3b 0a 0a 09 09 2f 2a |ase",fil|);..../*|
|00002650| 20 75 70 64 61 74 65 20 | 63 68 61 6e 67 65 73 20 | update |changes |
|00002660| 2a 2f 0a 09 09 69 66 28 | 75 70 64 66 6c 67 29 20 |*/...if(|updflg) |
|00002670| 7b 0a 09 09 09 2f 2a 20 | 61 20 63 68 65 63 6b 73 |{..../* |a checks|
|00002680| 75 6d 20 77 69 6c 6c 20 | 62 65 20 64 6f 6e 65 20 |um will |be done |
|00002690| 6f 6e 6c 79 20 69 66 20 | 73 75 6d 66 6c 67 20 69 |only if |sumflg i|
|000026a0| 73 20 73 65 74 20 2a 2f | 0a 09 09 09 28 76 6f 69 |s set */|....(voi|
|000026b0| 64 29 73 63 61 6e 5f 73 | 74 6f 72 65 28 66 69 6c |d)scan_s|tore(fil|
|000026c0| 2c 30 29 3b 0a 09 09 7d | 0a 09 09 72 65 74 75 72 |,0);...}|...retur|
|000026d0| 6e 28 31 29 3b 0a 09 7d | 0a 0a 09 28 76 6f 69 64 |n(1);..}|...(void|
|000026e0| 29 62 63 6f 70 79 28 63 | 6f 6e 74 65 6e 74 2e 64 |)bcopy(c|ontent.d|
|000026f0| 70 74 72 2c 28 63 68 61 | 72 20 2a 29 26 73 70 74 |ptr,(cha|r *)&spt|
|00002700| 72 2c 73 69 7a 65 6f 66 | 28 73 70 74 72 29 29 3b |r,sizeof|(sptr));|
|00002710| 0a 0a 09 2f 2a 20 63 68 | 65 63 6b 20 77 68 61 74 |.../* ch|eck what|
|00002720| 20 77 65 20 64 65 65 6d | 20 69 6d 70 6f 72 74 61 | we deem| importa|
|00002730| 6e 74 20 2a 2f 0a 09 69 | 66 28 73 70 74 72 2e 73 |nt */..i|f(sptr.s|
|00002740| 75 6d 66 20 21 3d 20 30 | 29 20 7b 0a 09 09 73 62 |umf != 0|) {...sb|
|00002750| 75 66 2e 73 75 6d 20 3d | 20 73 75 6d 69 74 28 66 |uf.sum =| sumit(f|
|00002760| 69 6c 29 3b 0a 09 09 69 | 66 28 73 70 74 72 2e 73 |il);...i|f(sptr.s|
|00002770| 75 6d 20 21 3d 20 73 62 | 75 66 2e 73 75 6d 29 20 |um != sb|uf.sum) |
|00002780| 7b 0a 09 09 09 77 61 72 | 6e 28 22 63 68 65 63 6b |{....war|n("check|
|00002790| 73 75 6d 20 64 6f 65 73 | 20 6e 6f 74 20 6d 61 74 |sum does| not mat|
|000027a0| 63 68 22 2c 66 69 6c 29 | 3b 0a 09 09 09 73 74 61 |ch",fil)|;....sta|
|000027b0| 74 65 2b 2b 3b 0a 09 09 | 7d 0a 09 7d 0a 09 69 66 |te++;...|}..}..if|
|000027c0| 28 73 70 74 72 2e 73 2e | 73 74 5f 73 69 7a 65 20 |(sptr.s.|st_size |
|000027d0| 21 3d 20 73 62 75 66 2e | 73 2e 73 74 5f 73 69 7a |!= sbuf.|s.st_siz|
|000027e0| 65 29 20 7b 0a 09 09 77 | 61 72 6e 28 22 66 69 6c |e) {...w|arn("fil|
|000027f0| 65 20 73 69 7a 65 20 68 | 61 73 20 63 68 61 6e 67 |e size h|as chang|
|00002800| 65 64 22 2c 66 69 6c 29 | 3b 0a 09 09 73 74 61 74 |ed",fil)|;...stat|
|00002810| 65 2b 2b 3b 0a 09 7d 0a | 09 69 66 28 73 70 74 72 |e++;..}.|.if(sptr|
|00002820| 2e 73 2e 73 74 5f 75 69 | 64 20 21 3d 20 73 62 75 |.s.st_ui|d != sbu|
|00002830| 66 2e 73 2e 73 74 5f 75 | 69 64 29 20 7b 0a 09 09 |f.s.st_u|id) {...|
|00002840| 77 61 72 6e 28 22 6f 77 | 6e 65 72 20 75 69 64 20 |warn("ow|ner uid |
|00002850| 68 61 73 20 63 68 61 6e | 67 65 64 22 2c 66 69 6c |has chan|ged",fil|
|00002860| 29 3b 0a 09 09 73 74 61 | 74 65 2b 2b 3b 0a 09 7d |);...sta|te++;..}|
|00002870| 0a 09 69 66 28 73 70 74 | 72 2e 73 2e 73 74 5f 75 |..if(spt|r.s.st_u|
|00002880| 69 64 20 21 3d 20 73 62 | 75 66 2e 73 2e 73 74 5f |id != sb|uf.s.st_|
|00002890| 75 69 64 29 20 7b 0a 09 | 09 77 61 72 6e 28 22 6f |uid) {..|.warn("o|
|000028a0| 77 6e 65 72 20 67 69 64 | 20 68 61 73 20 63 68 61 |wner gid| has cha|
|000028b0| 6e 67 65 64 22 2c 66 69 | 6c 29 3b 0a 09 09 73 74 |nged",fi|l);...st|
|000028c0| 61 74 65 2b 2b 3b 0a 09 | 7d 0a 09 69 66 28 73 70 |ate++;..|}..if(sp|
|000028d0| 74 72 2e 73 2e 73 74 5f | 6d 6f 64 65 20 21 3d 20 |tr.s.st_|mode != |
|000028e0| 73 62 75 66 2e 73 2e 73 | 74 5f 6d 6f 64 65 29 20 |sbuf.s.s|t_mode) |
|000028f0| 7b 0a 09 09 77 61 72 6e | 28 22 70 65 72 6d 69 73 |{...warn|("permis|
|00002900| 73 69 6f 6e 73 20 68 61 | 76 65 20 63 68 61 6e 67 |sions ha|ve chang|
|00002910| 65 64 22 2c 66 69 6c 29 | 3b 0a 09 09 73 74 61 74 |ed",fil)|;...stat|
|00002920| 65 2b 2b 3b 0a 09 7d 0a | 09 69 66 28 73 70 74 72 |e++;..}.|.if(sptr|
|00002930| 2e 73 2e 73 74 5f 6d 74 | 69 6d 65 20 21 3d 20 73 |.s.st_mt|ime != s|
|00002940| 62 75 66 2e 73 2e 73 74 | 5f 6d 74 69 6d 65 29 20 |buf.s.st|_mtime) |
|00002950| 7b 0a 09 09 77 61 72 6e | 28 22 6d 6f 64 69 66 69 |{...warn|("modifi|
|00002960| 63 61 74 69 6f 6e 20 74 | 69 6d 65 20 68 61 73 20 |cation t|ime has |
|00002970| 63 68 61 6e 67 65 64 22 | 2c 66 69 6c 29 3b 0a 09 |changed"|,fil);..|
|00002980| 09 73 74 61 74 65 2b 2b | 3b 0a 09 7d 0a 09 69 66 |.state++|;..}..if|
|00002990| 28 73 70 74 72 2e 73 2e | 73 74 5f 63 74 69 6d 65 |(sptr.s.|st_ctime|
|000029a0| 20 21 3d 20 73 62 75 66 | 2e 73 2e 73 74 5f 63 74 | != sbuf|.s.st_ct|
|000029b0| 69 6d 65 29 20 7b 0a 09 | 09 77 61 72 6e 28 22 63 |ime) {..|.warn("c|
|000029c0| 72 65 61 74 69 6f 6e 20 | 74 69 6d 65 20 68 61 73 |reation |time has|
|000029d0| 20 63 68 61 6e 67 65 64 | 22 2c 66 69 6c 29 3b 0a | changed|",fil);.|
|000029e0| 09 09 73 74 61 74 65 2b | 2b 3b 0a 09 7d 0a 0a 09 |..state+|+;..}...|
|000029f0| 2f 2a 20 75 70 64 61 74 | 65 20 63 68 61 6e 67 65 |/* updat|e change|
|00002a00| 73 20 2a 2f 0a 09 69 66 | 28 75 70 64 66 6c 67 20 |s */..if|(updflg |
|00002a10| 26 26 20 73 74 61 74 65 | 20 21 3d 20 30 29 0a 09 |&& state| != 0)..|
|00002a20| 09 2f 2a 20 63 68 65 63 | 6b 73 75 6d 20 77 69 6c |./* chec|ksum wil|
|00002a30| 6c 20 62 65 20 64 6f 6e | 65 20 69 66 20 73 75 6d |l be don|e if sum|
|00002a40| 66 6c 67 20 6f 72 20 74 | 68 65 20 66 69 6c 65 20 |flg or t|he file |
|00002a50| 66 6c 61 67 20 69 73 20 | 73 65 74 20 2a 2f 0a 09 |flag is |set */..|
|00002a60| 09 28 76 6f 69 64 29 73 | 63 61 6e 5f 73 74 6f 72 |.(void)s|can_stor|
|00002a70| 65 28 66 69 6c 2c 73 70 | 74 72 2e 73 75 6d 66 29 |e(fil,sp|tr.sumf)|
|00002a80| 3b 0a 0a 09 72 65 74 75 | 72 6e 28 73 74 61 74 65 |;...retu|rn(state|
|00002a90| 29 3b 0a 7d 0a 0a 75 73 | 61 67 65 28 29 0a 7b 0a |);.}..us|age().{.|
|00002aa0| 09 28 76 6f 69 64 29 66 | 70 72 69 6e 74 66 28 73 |.(void)f|printf(s|
|00002ab0| 74 64 65 72 72 2c 22 75 | 73 61 67 65 3a 5c 6e 22 |tderr,"u|sage:\n"|
|00002ac0| 29 3b 0a 09 28 76 6f 69 | 64 29 66 70 72 69 6e 74 |);..(voi|d)fprint|
|00002ad0| 66 28 73 74 64 65 72 72 | 2c 22 66 69 6c 65 73 63 |f(stderr|,"filesc|
|00002ae0| 61 6e 20 2d 64 20 64 61 | 74 61 62 61 73 65 20 5b |an -d da|tabase [|
|00002af0| 2d 61 20 28 61 70 70 65 | 6e 64 20 74 6f 20 6c 6f |-a (appe|nd to lo|
|00002b00| 67 29 5d 20 5b 2d 73 20 | 28 70 65 72 66 6f 72 6d |g)] [-s |(perform|
|00002b10| 20 63 68 65 63 6b 73 75 | 6d 73 29 5d 5c 6e 22 29 | checksu|ms)]\n")|
|00002b20| 3b 0a 23 69 66 64 65 66 | 09 4e 44 42 4d 0a 09 28 |;.#ifdef|.NDBM..(|
|00002b30| 76 6f 69 64 29 66 70 72 | 69 6e 74 66 28 73 74 64 |void)fpr|intf(std|
|00002b40| 65 72 72 2c 22 5c 74 5b | 2d 77 20 28 65 78 69 74 |err,"\t[|-w (exit|
|00002b50| 20 77 69 74 68 20 77 61 | 72 6e 69 6e 67 73 29 5d | with wa|rnings)]|
|00002b60| 20 5b 2d 63 20 28 6c 6f | 61 64 20 64 61 74 61 62 | [-c (lo|ad datab|
|00002b70| 61 73 65 29 5d 5c 6e 22 | 29 3b 0a 23 65 6e 64 69 |ase)]\n"|);.#endi|
|00002b80| 66 0a 23 69 66 64 65 66 | 09 44 42 4d 0a 09 28 76 |f.#ifdef|.DBM..(v|
|00002b90| 6f 69 64 29 66 70 72 69 | 6e 74 66 28 73 74 64 65 |oid)fpri|ntf(stde|
|00002ba0| 72 72 2c 22 5c 74 5b 2d | 77 20 28 65 78 69 74 20 |rr,"\t[-|w (exit |
|00002bb0| 77 69 74 68 20 77 61 72 | 6e 69 6e 67 73 29 5d 20 |with war|nings)] |
|00002bc0| 5b 2d 63 20 28 6c 6f 61 | 64 20 64 61 74 61 62 61 |[-c (loa|d databa|
|00002bd0| 73 65 29 5d 20 5b 2d 43 | 20 28 63 72 65 61 74 65 |se)] [-C| (create|
|00002be0| 20 64 61 74 61 62 61 73 | 65 29 5d 5c 6e 22 29 3b | databas|e)]\n");|
|00002bf0| 0a 23 65 6e 64 69 66 0a | 09 28 76 6f 69 64 29 66 |.#endif.|.(void)f|
|00002c00| 70 72 69 6e 74 66 28 73 | 74 64 65 72 72 2c 22 5c |printf(s|tderr,"\|
|00002c10| 74 5b 2d 69 20 66 69 6c | 65 6e 61 6d 65 20 28 72 |t[-i fil|ename (r|
|00002c20| 65 61 64 20 6c 69 73 74 | 20 66 72 6f 6d 20 66 69 |ead list| from fi|
|00002c30| 6c 65 29 5d 20 5b 2d 6f | 20 66 69 6c 65 6e 61 6d |le)] [-o| filenam|
|00002c40| 65 20 28 6c 6f 67 20 66 | 69 6c 65 29 5d 5c 6e 22 |e (log f|ile)]\n"|
|00002c50| 29 3b 0a 09 28 76 6f 69 | 64 29 66 70 72 69 6e 74 |);..(voi|d)fprint|
|00002c60| 66 28 73 74 64 65 72 72 | 2c 22 5c 74 5b 2d 75 20 |f(stderr|,"\t[-u |
|00002c70| 28 75 70 64 61 74 65 20 | 61 6e 79 20 63 68 61 6e |(update |any chan|
|00002c80| 67 65 73 20 66 6f 75 6e | 64 29 5d 5c 6e 22 29 3b |ges foun|d)]\n");|
|00002c90| 0a 09 72 65 74 75 72 6e | 28 31 29 3b 0a 7d 0a 0a |..return|(1);.}..|
|00002ca0| 73 74 61 74 69 63 09 76 | 6f 69 64 0a 77 61 72 6e |static.v|oid.warn|
|00002cb0| 28 73 31 2c 73 32 29 0a | 63 68 61 72 09 2a 73 31 |(s1,s2).|char.*s1|
|00002cc0| 3b 0a 63 68 61 72 09 2a | 73 32 3b 0a 7b 0a 09 65 |;.char.*|s2;.{..e|
|00002cd0| 78 74 65 72 6e 09 69 6e | 74 09 65 72 72 6e 6f 3b |xtern.in|t.errno;|
|00002ce0| 0a 09 65 78 74 65 72 6e | 09 63 68 61 72 09 2a 73 |..extern|.char.*s|
|00002cf0| 79 73 5f 65 72 72 6c 69 | 73 74 5b 5d 3b 0a 0a 09 |ys_errli|st[];...|
|00002d00| 69 66 28 65 72 72 6e 6f | 29 20 0a 09 09 28 76 6f |if(errno|) ...(vo|
|00002d10| 69 64 29 66 70 72 69 6e | 74 66 28 6f 75 74 66 2c |id)fprin|tf(outf,|
|00002d20| 22 25 73 3a 25 73 28 25 | 73 29 5c 6e 22 2c 73 32 |"%s:%s(%|s)\n",s2|
|00002d30| 2c 73 31 2c 73 79 73 5f | 65 72 72 6c 69 73 74 5b |,s1,sys_|errlist[|
|00002d40| 65 72 72 6e 6f 5d 29 3b | 0a 09 65 6c 73 65 0a 09 |errno]);|..else..|
|00002d50| 09 28 76 6f 69 64 29 66 | 70 72 69 6e 74 66 28 6f |.(void)f|printf(o|
|00002d60| 75 74 66 2c 22 25 73 3a | 25 73 5c 6e 22 2c 73 32 |utf,"%s:|%s\n",s2|
|00002d70| 2c 73 31 29 3b 0a 7d 0a | 0a 0a 73 75 6d 69 74 28 |,s1);.}.|..sumit(|
|00002d80| 66 69 6c 29 0a 63 68 61 | 72 09 2a 66 69 6c 3b 0a |fil).cha|r.*fil;.|
|00002d90| 7b 0a 09 69 6e 74 09 73 | 75 6d 20 3d 20 30 3b 0a |{..int.s|um = 0;.|
|00002da0| 09 69 6e 74 09 66 64 3b | 0a 09 69 6e 74 09 63 6e |.int.fd;|..int.cn|
|00002db0| 74 3b 0a 09 63 68 61 72 | 09 62 75 66 5b 42 55 46 |t;..char|.buf[BUF|
|00002dc0| 53 49 5a 5d 3b 0a 0a 09 | 69 66 28 28 66 64 20 3d |SIZ];...|if((fd =|
|00002dd0| 20 6f 70 65 6e 28 66 69 | 6c 2c 4f 5f 52 44 4f 4e | open(fi|l,O_RDON|
|00002de0| 4c 59 29 29 20 3c 20 30 | 29 20 7b 0a 09 09 77 61 |LY)) < 0|) {...wa|
|00002df0| 72 6e 28 22 63 61 6e 6e | 6f 74 20 72 65 61 64 20 |rn("cann|ot read |
|00002e00| 66 6f 72 20 73 75 6d 22 | 2c 66 69 6c 29 3b 0a 09 |for sum"|,fil);..|
|00002e10| 7d 20 65 6c 73 65 20 7b | 0a 09 09 77 68 69 6c 65 |} else {|...while|
|00002e20| 28 28 63 6e 74 20 3d 20 | 72 65 61 64 28 66 64 2c |((cnt = |read(fd,|
|00002e30| 62 75 66 2c 42 55 46 53 | 49 5a 29 29 20 3e 20 30 |buf,BUFS|IZ)) > 0|
|00002e40| 29 0a 09 09 09 73 75 6d | 20 2b 3d 20 69 6e 5f 63 |)....sum| += in_c|
|00002e50| 6b 73 75 6d 28 28 75 5f | 73 68 6f 72 74 20 2a 29 |ksum((u_|short *)|
|00002e60| 62 75 66 2c 63 6e 74 29 | 3b 0a 09 09 28 76 6f 69 |buf,cnt)|;...(voi|
|00002e70| 64 29 63 6c 6f 73 65 28 | 66 64 29 3b 0a 09 7d 0a |d)close(|fd);..}.|
|00002e80| 09 72 65 74 75 72 6e 28 | 73 75 6d 29 3b 0a 7d 0a |.return(|sum);.}.|
|00002e90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002ea0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002eb0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002ec0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002ed0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002ee0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002ef0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f00| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002f90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002fa0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002fb0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002fc0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002fd0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002fe0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002ff0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003000| 66 69 6c 65 73 63 61 6e | 2f 69 6e 5f 63 6b 73 75 |filescan|/in_cksu|
|00003010| 6d 2e 63 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |m.c.....|........|
|00003020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003040| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003050| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003060| 00 00 00 00 20 20 20 36 | 34 34 20 00 20 20 20 32 |....   6|44 .   2|
|00003070| 34 33 20 00 20 20 20 20 | 20 30 20 00 20 20 20 20 |43 .    | 0 .    |
|00003080| 20 20 20 31 34 37 36 20 | 20 34 35 30 36 34 36 37 |   1476 | 4506467|
|00003090| 34 33 31 20 20 20 37 36 | 33 37 00 20 00 00 00 00 |431   76|37. ....|
|000030a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000030b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000030c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000030d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000030e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000030f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003100| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003110| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003120| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003130| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003140| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003150| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003160| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003170| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003180| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003190| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000031a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000031b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000031c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000031d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000031e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000031f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003200| 23 69 6e 63 6c 75 64 65 | 20 3c 73 79 73 2f 74 79 |#include| <sys/ty|
|00003210| 70 65 73 2e 68 3e 0a 0a | 2f 2a 0a 20 2a 20 49 6e |pes.h>..|/*. * In|
|00003220| 74 65 72 6e 65 74 20 50 | 72 6f 74 6f 63 6f 6c 20 |ternet P|rotocol |
|00003230| 63 68 65 63 6b 73 75 6d | 20 72 6f 75 74 69 6e 65 |checksum| routine|
|00003240| 2c 20 73 74 6f 6c 65 6e | 20 66 72 6f 6d 20 70 69 |, stolen| from pi|
|00003250| 6e 67 2e 63 0a 20 2a 2f | 0a 0a 69 6e 5f 63 6b 73 |ng.c. */|..in_cks|
|00003260| 75 6d 28 61 64 64 72 2c | 20 6c 65 6e 29 0a 09 75 |um(addr,| len)..u|
|00003270| 5f 73 68 6f 72 74 09 2a | 61 64 64 72 3b 0a 09 69 |_short.*|addr;..i|
|00003280| 6e 74 09 6c 65 6e 3b 0a | 7b 0a 09 72 65 67 69 73 |nt.len;.|{..regis|
|00003290| 74 65 72 20 69 6e 74 20 | 6e 6c 65 66 74 20 3d 20 |ter int |nleft = |
|000032a0| 6c 65 6e 3b 0a 09 72 65 | 67 69 73 74 65 72 20 75 |len;..re|gister u|
|000032b0| 5f 73 68 6f 72 74 20 2a | 77 20 3d 20 61 64 64 72 |_short *|w = addr|
|000032c0| 3b 0a 09 72 65 67 69 73 | 74 65 72 20 75 5f 73 68 |;..regis|ter u_sh|
|000032d0| 6f 72 74 20 61 6e 73 77 | 65 72 3b 0a 09 72 65 67 |ort answ|er;..reg|
|000032e0| 69 73 74 65 72 20 69 6e | 74 20 73 75 6d 20 3d 20 |ister in|t sum = |
|000032f0| 30 3b 0a 0a 09 2f 2a 0a | 09 20 2a 20 20 4f 75 72 |0;.../*.|. *  Our|
|00003300| 20 61 6c 67 6f 72 69 74 | 68 6d 20 69 73 20 73 69 | algorit|hm is si|
|00003310| 6d 70 6c 65 2c 20 75 73 | 69 6e 67 20 61 20 33 32 |mple, us|ing a 32|
|00003320| 20 62 69 74 20 61 63 63 | 75 6d 75 6c 61 74 6f 72 | bit acc|umulator|
|00003330| 20 28 73 75 6d 29 2c 0a | 09 20 2a 20 20 77 65 20 | (sum),.|. *  we |
|00003340| 61 64 64 20 73 65 71 75 | 65 6e 74 69 61 6c 20 31 |add sequ|ential 1|
|00003350| 36 20 62 69 74 20 77 6f | 72 64 73 20 74 6f 20 69 |6 bit wo|rds to i|
|00003360| 74 2c 20 61 6e 64 20 61 | 74 20 74 68 65 20 65 6e |t, and a|t the en|
|00003370| 64 2c 20 66 6f 6c 64 0a | 09 20 2a 20 20 62 61 63 |d, fold.|. *  bac|
|00003380| 6b 20 61 6c 6c 20 74 68 | 65 20 63 61 72 72 79 20 |k all th|e carry |
|00003390| 62 69 74 73 20 66 72 6f | 6d 20 74 68 65 20 74 6f |bits fro|m the to|
|000033a0| 70 20 31 36 20 62 69 74 | 73 20 69 6e 74 6f 20 74 |p 16 bit|s into t|
|000033b0| 68 65 20 6c 6f 77 65 72 | 0a 09 20 2a 20 20 31 36 |he lower|.. *  16|
|000033c0| 20 62 69 74 73 2e 0a 09 | 20 2a 2f 0a 09 77 68 69 | bits...| */..whi|
|000033d0| 6c 65 28 20 6e 6c 65 66 | 74 20 3e 20 31 20 29 20 |le( nlef|t > 1 ) |
|000033e0| 20 7b 0a 09 09 73 75 6d | 20 2b 3d 20 2a 77 2b 2b | {...sum| += *w++|
|000033f0| 3b 0a 09 09 6e 6c 65 66 | 74 20 2d 3d 20 32 3b 0a |;...nlef|t -= 2;.|
|00003400| 09 7d 0a 0a 09 2f 2a 20 | 6d 6f 70 20 75 70 20 61 |.}.../* |mop up a|
|00003410| 6e 20 6f 64 64 20 62 79 | 74 65 2c 20 69 66 20 6e |n odd by|te, if n|
|00003420| 65 63 65 73 73 61 72 79 | 20 2a 2f 0a 09 69 66 28 |ecessary| */..if(|
|00003430| 20 6e 6c 65 66 74 20 3d | 3d 20 31 20 29 0a 09 09 | nleft =|= 1 )...|
|00003440| 73 75 6d 20 2b 3d 20 2a | 28 75 5f 63 68 61 72 20 |sum += *|(u_char |
|00003450| 2a 29 77 3b 0a 0a 09 2f | 2a 0a 09 20 2a 20 61 64 |*)w;.../|*.. * ad|
|00003460| 64 20 62 61 63 6b 20 63 | 61 72 72 79 20 6f 75 74 |d back c|arry out|
|00003470| 73 20 66 72 6f 6d 20 74 | 6f 70 20 31 36 20 62 69 |s from t|op 16 bi|
|00003480| 74 73 20 74 6f 20 6c 6f | 77 20 31 36 20 62 69 74 |ts to lo|w 16 bit|
|00003490| 73 0a 09 20 2a 2f 0a 09 | 73 75 6d 20 3d 20 28 73 |s.. */..|sum = (s|
|000034a0| 75 6d 20 3e 3e 20 31 36 | 29 20 2b 20 28 73 75 6d |um >> 16|) + (sum|
|000034b0| 20 26 20 30 78 66 66 66 | 66 29 3b 09 2f 2a 20 61 | & 0xfff|f);./* a|
|000034c0| 64 64 20 68 69 20 31 36 | 20 74 6f 20 6c 6f 77 20 |dd hi 16| to low |
|000034d0| 31 36 20 2a 2f 0a 09 73 | 75 6d 20 2b 3d 20 28 73 |16 */..s|um += (s|
|000034e0| 75 6d 20 3e 3e 20 31 36 | 29 3b 09 09 09 2f 2a 20 |um >> 16|);.../* |
|000034f0| 61 64 64 20 63 61 72 72 | 79 20 2a 2f 0a 09 61 6e |add carr|y */..an|
|00003500| 73 77 65 72 20 3d 20 7e | 73 75 6d 3b 09 09 09 09 |swer = ~|sum;....|
|00003510| 2f 2a 20 74 72 75 6e 63 | 61 74 65 20 74 6f 20 31 |/* trunc|ate to 1|
|00003520| 36 20 62 69 74 73 20 2a | 2f 0a 09 72 65 74 75 72 |6 bits *|/..retur|
|00003530| 6e 20 28 61 6e 73 77 65 | 72 29 3b 0a 7d 0a 3b 0a |n (answe|r);.}.;.|
|00003540| 09 63 6f 6e 74 65 6e 74 | 2e 64 70 74 72 20 3d 20 |.content|.dptr = |
|00003550| 28 63 68 61 72 20 2a 29 | 26 73 62 75 66 3b 0a 0a |(char *)|&sbuf;..|
|00003560| 23 69 66 64 65 66 09 44 | 42 4d 0a 09 69 66 28 73 |#ifdef.D|BM..if(s|
|00003570| 74 6f 72 65 28 6b 65 79 | 2c 20 63 6f 6e 74 65 6e |tore(key|, conten|
|00003580| 74 29 29 20 7b 0a 09 09 | 77 61 72 6e 28 22 63 61 |t)) {...|warn("ca|
|00003590| 6e 6e 6f 74 20 73 74 6f | 72 65 22 2c 66 69 6c 29 |nnot sto|re",fil)|
|000035a0| 3b 0a 09 09 72 65 74 75 | 72 6e 28 31 29 3b 0a 09 |;...retu|rn(1);..|
|000035b0| 7d 0a 23 65 6e 64 69 66 | 0a 23 69 66 64 65 66 09 |}.#endif|.#ifdef.|
|000035c0| 4e 44 42 4d 0a 09 69 66 | 28 64 62 6d 5f 73 74 6f |NDBM..if|(dbm_sto|
|000035d0| 72 65 28 64 62 66 2c 6b | 65 79 2c 20 63 6f 6e 74 |re(dbf,k|ey, cont|
|000035e0| 65 6e 74 2c 44 42 4d 5f | 52 45 50 4c 41 43 45 29 |ent,DBM_|REPLACE)|
|000035f0| 29 20 7b 0a 09 09 77 61 | 72 6e 28 22 63 61 6e 6e |) {...wa|rn("cann|
|00003600| 66 69 6c 65 73 63 61 6e | 2f 66 69 6c 65 73 63 61 |filescan|/filesca|
|00003610| 6e 2e 38 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |n.8.....|........|
|00003620| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003630| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003640| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003650| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003660| 00 00 00 00 20 20 20 36 | 34 34 20 00 20 20 20 32 |....   6|44 .   2|
|00003670| 34 33 20 00 20 20 20 20 | 20 30 20 00 20 20 20 20 |43 .    | 0 .    |
|00003680| 20 20 20 37 35 35 35 20 | 20 34 35 30 36 34 36 37 |   7555 | 4506467|
|00003690| 34 33 32 20 20 20 37 35 | 34 35 00 20 00 00 00 00 |432   75|45. ....|
|000036a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000036b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000036c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000036d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000036e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000036f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003700| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003710| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003720| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003730| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003740| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003750| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003760| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003770| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003780| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003790| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000037a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000037b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000037c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000037d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000037e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000037f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003800| 2e 5c 22 20 24 48 65 61 | 64 65 72 3a 20 66 69 6c |.\" $Hea|der: fil|
|00003810| 65 73 63 61 6e 2e 38 2c | 76 20 31 2e 31 20 38 39 |escan.8,|v 1.1 89|
|00003820| 2f 30 39 2f 31 33 20 31 | 35 3a 34 38 3a 33 34 20 |/09/13 1|5:48:34 |
|00003830| 6d 6a 72 20 45 78 70 20 | 24 0a 2e 54 48 20 46 49 |mjr Exp |$..TH FI|
|00003840| 4c 45 53 43 41 4e 20 31 | 20 22 31 33 20 53 65 70 |LESCAN 1| "13 Sep|
|00003850| 74 65 6d 62 65 72 20 31 | 39 38 39 22 0a 2e 53 48 |tember 1|989"..SH|
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|000045f0| 65 20 70 72 6f 67 72 61 | 6d 20 73 68 6f 75 6c 64 |e progra|m should|
|00004600| 0a 72 65 61 64 20 61 6e | 20 6f 70 74 69 6f 6e 61 |.read an| optiona|
|00004610| 6c 20 63 68 65 63 6b 73 | 75 6d 20 61 6c 6f 6e 67 |l checks|um along|
|00004620| 20 77 69 74 68 20 74 68 | 65 20 66 69 6c 65 20 6e | with th|e file n|
|00004630| 61 6d 65 3f 29 0a 2e 4c | 50 0a 54 68 69 73 20 70 |ame?)..L|P.This p|
|00004640| 72 6f 67 72 61 6d 20 73 | 68 6f 75 6c 64 20 6e 6f |rogram s|hould no|
|00004650| 74 20 67 69 76 65 20 61 | 20 66 61 6c 73 65 20 73 |t give a| false s|
|00004660| 65 6e 73 65 20 6f 66 20 | 73 65 63 75 72 69 74 79 |ense of |security|
|00004670| 2e 0a 2e 53 48 20 57 41 | 52 4e 49 4e 47 0a 41 76 |...SH WA|RNING.Av|
|00004680| 6f 69 64 20 68 61 76 69 | 6e 67 20 2f 64 65 76 20 |oid havi|ng /dev |
|00004690| 69 6e 20 74 68 65 20 6c | 69 73 74 20 6f 66 20 66 |in the l|ist of f|
|000046a0| 69 6c 65 73 2c 20 73 69 | 6e 63 65 20 74 68 65 20 |iles, si|nce the |
|000046b0| 74 74 79 73 20 63 68 61 | 6e 67 65 20 70 65 72 6d |ttys cha|nge perm|
|000046c0| 69 73 73 69 6f 6e 0a 61 | 6e 64 20 6f 77 6e 65 72 |ission.a|nd owner|
|000046d0| 73 68 69 70 20 61 20 6c | 6f 74 2e 20 41 6c 73 6f |ship a l|ot. Also|
|000046e0| 20 61 76 6f 69 64 20 68 | 61 76 69 6e 67 20 79 6f | avoid h|aving yo|
|000046f0| 75 72 20 64 61 74 61 62 | 61 73 65 20 63 68 65 63 |ur datab|ase chec|
|00004700| 6b 20 6f 6e 20 69 74 73 | 65 6c 66 20 0a 69 6e 20 |k on its|elf .in |
|00004710| 75 70 64 61 74 65 20 6d | 6f 64 65 2c 20 6f 72 20 |update m|ode, or |
|00004720| 79 6f 75 20 77 69 6c 6c | 20 61 6c 77 61 79 73 20 |you will| always |
|00004730| 67 65 74 20 77 61 72 6e | 69 6e 67 73 2e 0a 2e 53 |get warn|ings...S|
|00004740| 48 20 41 55 54 48 4f 52 | 0a 4d 61 72 63 75 73 20 |H AUTHOR|.Marcus |
|00004750| 4a 2e 20 52 61 6e 75 6d | 20 2d 20 6d 6a 72 40 77 |J. Ranum| - mjr@w|
|00004760| 65 6c 63 68 2e 6a 68 75 | 2e 65 64 75 0a 20 61 72 |elch.jhu|.edu. ar|
|00004770| 65 0a 62 65 69 6e 67 20 | 73 74 6f 72 65 64 20 6f |e.being |stored o|
|00004780| 72 20 75 70 64 61 74 65 | 64 20 69 6e 20 74 68 65 |r update|d in the|
|00004790| 20 64 61 74 61 62 61 73 | 65 2e 20 57 68 65 6e 20 | databas|e. When |
|000047a0| 61 20 66 69 6c 65 20 69 | 73 20 73 74 6f 72 65 64 |a file i|s stored|
|000047b0| 2c 20 61 0a 66 6c 61 67 | 20 69 73 20 73 74 6f 72 |, a.flag| is stor|
|000047c0| 65 64 20 77 69 74 68 20 | 69 74 2c 20 69 6e 64 69 |ed with |it, indi|
|000047d0| 63 61 74 69 6e 67 20 74 | 68 61 74 20 74 68 65 20 |cating t|hat the |
|000047e0| 66 69 6c 65 20 69 73 20 | 74 6f 20 62 65 20 73 75 |file is |to be su|
|000047f0| 6d 6d 65 64 2c 0a 61 6e | 64 20 69 74 20 69 73 20 |mmed,.an|d it is |
|00004800| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004810| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004820| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004830| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004840| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004850| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004860| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004870| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004880| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004890| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000048a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000048b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000048c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000048d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000048e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000048f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004900| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004910| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004920| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004930| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004940| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004950| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004960| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004970| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004980| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004990| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000049a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000049b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000049c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000049d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000049e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000049f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a00| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004a90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004aa0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ab0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ac0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ad0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ae0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004af0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b00| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004b90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ba0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004bb0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004bc0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004bd0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004be0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004bf0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004c00| 70 72 69 6e 74 66 28 73 | 74 64 65 72 72 2c 22 5c |printf(s|tderr,"\|
|00004c10| 74 5b 2d 69 20 66 69 6c | 65 6e 61 6d 65 20 28 72 |t[-i fil|ename (r|
|00004c20| 65 61 64 20 6c 69 73 74 | 20 66 72 6f 6d 20 66 69 |ead list| from fi|
|00004c30| 6c 65 29 5d 20 5b 2d 6f | 20 66 69 6c 65 6e 61 6d |le)] [-o| filenam|
|00004c40| 65 20 28 6c 6f 67 20 66 | 69 6c 65 29 5d 5c 6e 22 |e (log f|ile)]\n"|
|00004c50| 29 3b 0a 09 28 76 6f 69 | 64 29 66 70 72 69 6e 74 |);..(voi|d)fprint|
|00004c60| 66 28 73 74 64 65 72 72 | 2c 22 5c 74 5b 2d 75 20 |f(stderr|,"\t[-u |
|00004c70| 28 75 70 64 61 74 65 20 | 61 6e 79 20 63 68 61 6e |(update |any chan|
|00004c80| 67 65 73 20 66 6f 75 6e | 64 29 5d 5c 6e 22 29 3b |ges foun|d)]\n");|
|00004c90| 0a 09 72 65 74 75 72 6e | 28 31 29 3b 0a 7d 0a 0a |..return|(1);.}..|
|00004ca0| 73 74 61 74 69 63 09 76 | 6f 69 64 0a 77 61 72 6e |static.v|oid.warn|
|00004cb0| 28 73 31 2c 73 32 29 0a | 63 68 61 72 09 2a 73 31 |(s1,s2).|char.*s1|
|00004cc0| 3b 0a 63 68 61 72 09 2a | 73 32 3b 0a 7b 0a 09 65 |;.char.*|s2;.{..e|
|00004cd0| 78 74 65 72 6e 09 69 6e | 74 09 65 72 72 6e 6f 3b |xtern.in|t.errno;|
|00004ce0| 0a 09 65 78 74 65 72 6e | 09 63 68 61 72 09 2a 73 |..extern|.char.*s|
|00004cf0| 79 73 5f 65 72 72 6c 69 | 73 74 5b 5d 3b 0a 0a 09 |ys_errli|st[];...|
|00004d00| 69 66 28 65 72 72 6e 6f | 29 20 0a 09 09 28 76 6f |if(errno|) ...(vo|
|00004d10| 69 64 29 66 70 72 69 6e | 74 66 28 6f 75 74 66 2c |id)fprin|tf(outf,|
|00004d20| 22 25 73 3a 25 73 28 25 | 73 29 5c 6e 22 2c 73 32 |"%s:%s(%|s)\n",s2|
|00004d30| 2c 73 31 2c 73 79 73 5f | 65 72 72 6c 69 73 74 5b |,s1,sys_|errlist[|
|00004d40| 65 72 72 6e 6f 5d 29 3b | 0a 09 65 6c 73 65 0a 09 |errno]);|..else..|
|00004d50| 09 28 76 6f 69 64 29 66 | 70 72 69 6e 74 66 28 6f |.(void)f|printf(o|
|00004d60| 75 74 66 2c 22 25 73 3a | 25 73 5c 6e 22 2c 73 32 |utf,"%s:|%s\n",s2|
|00004d70| 2c 73 31 29 3b 0a 7d 0a | 0a 0a 73 75 6d 69 74 28 |,s1);.}.|..sumit(|
|00004d80| 66 69 6c 29 0a 63 68 61 | 72 09 2a 66 69 6c 3b 0a |fil).cha|r.*fil;.|
|00004d90| 7b 0a 09 69 6e 74 09 73 | 75 6d 20 3d 20 30 3b 0a |{..int.s|um = 0;.|
|00004da0| 09 69 6e 74 09 66 64 3b | 0a 09 69 6e 74 09 63 6e |.int.fd;|..int.cn|
|00004db0| 74 3b 0a 09 63 68 61 72 | 09 62 75 66 5b 42 55 46 |t;..char|.buf[BUF|
|00004dc0| 53 49 5a 5d 3b 0a 0a 09 | 69 66 28 28 66 64 20 3d |SIZ];...|if((fd =|
|00004dd0| 20 6f 70 65 6e 28 66 69 | 6c 2c 4f 5f 52 44 4f 4e | open(fi|l,O_RDON|
|00004de0| 4c 59 29 29 20 3c 20 30 | 29 20 7b 0a 09 09 77 61 |LY)) < 0|) {...wa|
|00004df0| 72 6e 28 22 63 61 6e 6e | 6f 74 20 72 65 61 64 20 |rn("cann|ot read |
|00004e00| 66 6f 72 20 73 75 6d 22 | 2c 66 69 6c 29 3b 0a 09 |for sum"|,fil);..|
|00004e10| 7d 20 65 6c 73 65 20 7b | 0a 09 09 77 68 69 6c 65 |} else {|...while|
|00004e20| 28 28 63 6e 74 20 3d 20 | 72 65 61 64 28 66 64 2c |((cnt = |read(fd,|
|00004e30| 62 75 66 2c 42 55 46 53 | 49 5a 29 29 20 3e 20 30 |buf,BUFS|IZ)) > 0|
|00004e40| 29 0a 09 09 09 73 75 6d | 20 2b 3d 20 69 6e 5f 63 |)....sum| += in_c|
|00004e50| 6b 73 75 6d 28 28 75 5f | 73 68 6f 72 74 20 2a 29 |ksum((u_|short *)|
|00004e60| 62 75 66 2c 63 6e 74 29 | 3b 0a 09 09 28 76 6f 69 |buf,cnt)|;...(voi|
|00004e70| 64 29 63 6c 6f 73 65 28 | 66 64 29 3b 0a 09 7d 0a |d)close(|fd);..}.|
|00004e80| 09 72 65 74 75 72 6e 28 | 73 75 6d 29 3b 0a 7d 0a |.return(|sum);.}.|
|00004e90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ea0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004eb0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ec0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ed0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ee0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ef0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f00| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004fa0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004fb0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004fc0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004fd0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004fe0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ff0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005000| 66 69 6c 65 73 63 61 6e | 2f 69 6e 5f 63 6b 73 75 |filescan|/in_cksu|
|00005010| 6d 2e 63 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |m.c.....|........|
|00005020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005040| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005050| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005060| 00 00 00 00 20 20 20 36 | 34 34 20 00 20 20 20 32 |....   6|44 .   2|
|00005070| 34 33 20 00 20 20 20 20 | 20 30 20 00 20 20 20 20 |43 .    | 0 .    |
|00005080| 20 20 20 31 34 37 36 20 | 20 34 35 30 36 34 36 37 |   1476 | 4506467|
|00005090| 34 33 31 20 20 20 37 36 | 33 37 00 20 00 00 00 00 |431   76|37. ....|
|000050a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000050b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000050c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000050d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000050e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000050f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005100| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005110| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005120| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005130| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005140| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005150| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005160| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005170| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005180| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005190| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000051a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000051b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000051c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000051d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000051e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000051f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005200| 23 69 6e 63 6c 75 64 65 | 20 3c 73 79 73 2f 74 79 |#include| <sys/ty|
|00005210| 70 65 73 2e 68 3e 0a 0a | 2f 2a 0a 20 2a 20 49 6e |pes.h>..|/*. * In|
|00005220| 74 65 72 6e 65 74 20 50 | 72 6f 74 6f 63 6f 6c 20 |ternet P|rotocol |
|00005230| 63 68 65 63 6b 73 75 6d | 20 72 6f 75 74 69 6e 65 |checksum| routine|
|00005240| 2c 20 73 74 6f 6c 65 6e | 20 66 72 6f 6d 20 70 69 |, stolen| from pi|
|00005250| 6e 67 2e 63 0a 20 2a 2f | 0a 0a 69 6e 5f 63 6b 73 |ng.c. */|..in_cks|
|00005260| 75 6d 28 61 64 64 72 2c | 20 6c 65 6e 29 0a 09 75 |um(addr,| len)..u|
|00005270| 5f 73 68 6f 72 74 09 2a | 61 64 64 72 3b 0a 09 69 |_short.*|addr;..i|
|00005280| 6e 74 09 6c 65 6e 3b 0a | 7b 0a 09 72 65 67 69 73 |nt.len;.|{..regis|
|00005290| 74 65 72 20 69 6e 74 20 | 6e 6c 65 66 74 20 3d 20 |ter int |nleft = |
|000052a0| 6c 65 6e 3b 0a 09 72 65 | 67 69 73 74 65 72 20 75 |len;..re|gister u|
|000052b0| 5f 73 68 6f 72 74 20 2a | 77 20 3d 20 61 64 64 72 |_short *|w = addr|
|000052c0| 3b 0a 09 72 65 67 69 73 | 74 65 72 20 75 5f 73 68 |;..regis|ter u_sh|
|000052d0| 6f 72 74 20 61 6e 73 77 | 65 72 3b 0a 09 72 65 67 |ort answ|er;..reg|
|000052e0| 69 73 74 65 72 20 69 6e | 74 20 73 75 6d 20 3d 20 |ister in|t sum = |
|000052f0| 30 3b 0a 0a 09 2f 2a 0a | 09 20 2a 20 20 4f 75 72 |0;.../*.|. *  Our|
|00005300| 20 61 6c 67 6f 72 69 74 | 68 6d 20 69 73 20 73 69 | algorit|hm is si|
|00005310| 6d 70 6c 65 2c 20 75 73 | 69 6e 67 20 61 20 33 32 |mple, us|ing a 32|
|00005320| 20 62 69 74 20 61 63 63 | 75 6d 75 6c 61 74 6f 72 | bit acc|umulator|
|00005330| 20 28 73 75 6d 29 2c 0a | 09 20 2a 20 20 77 65 20 | (sum),.|. *  we |
|00005340| 61 64 64 20 73 65 71 75 | 65 6e 74 69 61 6c 20 31 |add sequ|ential 1|
|00005350| 36 20 62 69 74 20 77 6f | 72 64 73 20 74 6f 20 69 |6 bit wo|rds to i|
|00005360| 74 2c 20 61 6e 64 20 61 | 74 20 74 68 65 20 65 6e |t, and a|t the en|
|00005370| 64 2c 20 66 6f 6c 64 0a | 09 20 2a 20 20 62 61 63 |d, fold.|. *  bac|
|00005380| 6b 20 61 6c 6c 20 74 68 | 65 20 63 61 72 72 79 20 |k all th|e carry |
|00005390| 62 69 74 73 20 66 72 6f | 6d 20 74 68 65 20 74 6f |bits fro|m the to|
|000053a0| 70 20 31 36 20 62 69 74 | 73 20 69 6e 74 6f 20 74 |p 16 bit|s into t|
|000053b0| 68 65 20 6c 6f 77 65 72 | 0a 09 20 2a 20 20 31 36 |he lower|.. *  16|
|000053c0| 20 62 69 74 73 2e 0a 09 | 20 2a 2f 0a 09 77 68 69 | bits...| */..whi|
|000053d0| 6c 65 28 20 6e 6c 65 66 | 74 20 3e 20 31 20 29 20 |le( nlef|t > 1 ) |
|000053e0| 20 7b 0a 09 09 73 75 6d | 20 2b 3d 20 2a 77 2b 2b | {...sum| += *w++|
|000053f0| 3b 0a 09 09 6e 6c 65 66 | 74 20 2d 3d 20 32 3b 0a |;...nlef|t -= 2;.|
|00005400| 09 7d 0a 0a 09 2f 2a 20 | 6d 6f 70 20 75 70 20 61 |.}.../* |mop up a|
|00005410| 6e 20 6f 64 64 20 62 79 | 74 65 2c 20 69 66 20 6e |n odd by|te, if n|
|00005420| 65 63 65 73 73 61 72 79 | 20 2a 2f 0a 09 69 66 28 |ecessary| */..if(|
|00005430| 20 6e 6c 65 66 74 20 3d | 3d 20 31 20 29 0a 09 09 | nleft =|= 1 )...|
|00005440| 73 75 6d 20 2b 3d 20 2a | 28 75 5f 63 68 61 72 20 |sum += *|(u_char |
|00005450| 2a 29 77 3b 0a 0a 09 2f | 2a 0a 09 20 2a 20 61 64 |*)w;.../|*.. * ad|
|00005460| 64 20 62 61 63 6b 20 63 | 61 72 72 79 20 6f 75 74 |d back c|arry out|
|00005470| 73 20 66 72 6f 6d 20 74 | 6f 70 20 31 36 20 62 69 |s from t|op 16 bi|
|00005480| 74 73 20 74 6f 20 6c 6f | 77 20 31 36 20 62 69 74 |ts to lo|w 16 bit|
|00005490| 73 0a 09 20 2a 2f 0a 09 | 73 75 6d 20 3d 20 28 73 |s.. */..|sum = (s|
|000054a0| 75 6d 20 3e 3e 20 31 36 | 29 20 2b 20 28 73 75 6d |um >> 16|) + (sum|
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