Source Code 1994 March

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Tape Archive | 1989-06-30 | 1.7 MB
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MacOS 8.1 extracted |
Win98 extracted |
DOS extracted
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This file was processed as: Tape Archive (archive/tar).

You can browse this item here: ipmltcst.tar
Confidence	Program	Detection	Match Type	Support
`100%`	dexvert	Tape Archive `(archive/tar)`	magic	Supported
`100%`	file	tar archive	default
`99%`	file	tar archive (V7), file ./, mode 775 , uid 16 , gid 0 , size 0 , seconds 4451054517	default
`98%`	file	data	default
`100%`	TrID	Sybase iAnywhere database files	default (weak)
`100%`	lsar	Tar	default
`100%`	gt2	TAR Archiv gefunden (Auflistung ist deaktiviert)	default
`100%`	disktype	Pre-POSIX tar archive	default
hex view
+--------+-------------------------+-------------------------+--------+--------+
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|00000800| 2f 2a 0a 20 2a 20 43 6f | 70 79 72 69 67 68 74 20 |/*. * Co|pyright |
|00000810| 28 63 29 20 31 39 38 32 | 2c 20 31 39 38 36 2c 20 |(c) 1982|, 1986, |
|00000820| 31 39 38 38 20 52 65 67 | 65 6e 74 73 20 6f 66 20 |1988 Reg|ents of |
|00000830| 74 68 65 20 55 6e 69 76 | 65 72 73 69 74 79 20 6f |the Univ|ersity o|
|00000840| 66 20 43 61 6c 69 66 6f | 72 6e 69 61 2e 0a 20 2a |f Califo|rnia.. *|
|00000850| 20 41 6c 6c 20 72 69 67 | 68 74 73 20 72 65 73 65 | All rig|hts rese|
|00000860| 72 76 65 64 2e 0a 20 2a | 0a 20 2a 20 52 65 64 69 |rved.. *|. * Redi|
|00000870| 73 74 72 69 62 75 74 69 | 6f 6e 20 61 6e 64 20 75 |stributi|on and u|
|00000880| 73 65 20 69 6e 20 73 6f | 75 72 63 65 20 61 6e 64 |se in so|urce and|
|00000890| 20 62 69 6e 61 72 79 20 | 66 6f 72 6d 73 20 61 72 | binary |forms ar|
|000008a0| 65 20 70 65 72 6d 69 74 | 74 65 64 0a 20 2a 20 70 |e permit|ted. * p|
|000008b0| 72 6f 76 69 64 65 64 20 | 74 68 61 74 20 74 68 65 |rovided |that the|
|000008c0| 20 61 62 6f 76 65 20 63 | 6f 70 79 72 69 67 68 74 | above c|opyright|
|000008d0| 20 6e 6f 74 69 63 65 20 | 61 6e 64 20 74 68 69 73 | notice |and this|
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|000008f0| 2a 20 64 75 70 6c 69 63 | 61 74 65 64 20 69 6e 20 |* duplic|ated in |
|00000900| 61 6c 6c 20 73 75 63 68 | 20 66 6f 72 6d 73 20 61 |all such| forms a|
|00000910| 6e 64 20 74 68 61 74 20 | 61 6e 79 20 64 6f 63 75 |nd that |any docu|
|00000920| 6d 65 6e 74 61 74 69 6f | 6e 2c 0a 20 2a 20 61 64 |mentatio|n,. * ad|
|00000930| 76 65 72 74 69 73 69 6e | 67 20 6d 61 74 65 72 69 |vertisin|g materi|
|00000940| 61 6c 73 2c 20 61 6e 64 | 20 6f 74 68 65 72 20 6d |als, and| other m|
|00000950| 61 74 65 72 69 61 6c 73 | 20 72 65 6c 61 74 65 64 |aterials| related|
|00000960| 20 74 6f 20 73 75 63 68 | 0a 20 2a 20 64 69 73 74 | to such|. * dist|
|00000970| 72 69 62 75 74 69 6f 6e | 20 61 6e 64 20 75 73 65 |ribution| and use|
|00000980| 20 61 63 6b 6e 6f 77 6c | 65 64 67 65 20 74 68 61 | acknowl|edge tha|
|00000990| 74 20 74 68 65 20 73 6f | 66 74 77 61 72 65 20 77 |t the so|ftware w|
|000009a0| 61 73 20 64 65 76 65 6c | 6f 70 65 64 0a 20 2a 20 |as devel|oped. * |
|000009b0| 62 79 20 74 68 65 20 55 | 6e 69 76 65 72 73 69 74 |by the U|niversit|
|000009c0| 79 20 6f 66 20 43 61 6c | 69 66 6f 72 6e 69 61 2c |y of Cal|ifornia,|
|000009d0| 20 42 65 72 6b 65 6c 65 | 79 2e 20 20 54 68 65 20 | Berkele|y.  The |
|000009e0| 6e 61 6d 65 20 6f 66 20 | 74 68 65 0a 20 2a 20 55 |name of |the. * U|
|000009f0| 6e 69 76 65 72 73 69 74 | 79 20 6d 61 79 20 6e 6f |niversit|y may no|
|00000a00| 74 20 62 65 20 75 73 65 | 64 20 74 6f 20 65 6e 64 |t be use|d to end|
|00000a10| 6f 72 73 65 20 6f 72 20 | 70 72 6f 6d 6f 74 65 20 |orse or |promote |
|00000a20| 70 72 6f 64 75 63 74 73 | 20 64 65 72 69 76 65 64 |products| derived|
|00000a30| 0a 20 2a 20 66 72 6f 6d | 20 74 68 69 73 20 73 6f |. * from| this so|
|00000a40| 66 74 77 61 72 65 20 77 | 69 74 68 6f 75 74 20 73 |ftware w|ithout s|
|00000a50| 70 65 63 69 66 69 63 20 | 70 72 69 6f 72 20 77 72 |pecific |prior wr|
|00000a60| 69 74 74 65 6e 20 70 65 | 72 6d 69 73 73 69 6f 6e |itten pe|rmission|
|00000a70| 2e 0a 20 2a 20 54 48 49 | 53 20 53 4f 46 54 57 41 |.. * THI|S SOFTWA|
|00000a80| 52 45 20 49 53 20 50 52 | 4f 56 49 44 45 44 20 60 |RE IS PR|OVIDED `|
|00000a90| 60 41 53 20 49 53 27 27 | 20 41 4e 44 20 57 49 54 |`AS IS''| AND WIT|
|00000aa0| 48 4f 55 54 20 41 4e 59 | 20 45 58 50 52 45 53 53 |HOUT ANY| EXPRESS|
|00000ab0| 20 4f 52 0a 20 2a 20 49 | 4d 50 4c 49 45 44 20 57 | OR. * I|MPLIED W|
|00000ac0| 41 52 52 41 4e 54 49 45 | 53 2c 20 49 4e 43 4c 55 |ARRANTIE|S, INCLU|
|00000ad0| 44 49 4e 47 2c 20 57 49 | 54 48 4f 55 54 20 4c 49 |DING, WI|THOUT LI|
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|00000af0| 50 4c 49 45 44 0a 20 2a | 20 57 41 52 52 41 4e 54 |PLIED. *| WARRANT|
|00000b00| 49 45 53 20 4f 46 20 4d | 45 52 43 48 41 4e 54 49 |IES OF M|ERCHANTI|
|00000b10| 42 49 4c 49 54 59 20 41 | 4e 44 20 46 49 54 4e 45 |BILITY A|ND FITNE|
|00000b20| 53 53 20 46 4f 52 20 41 | 20 50 41 52 54 49 43 55 |SS FOR A| PARTICU|
|00000b30| 4c 41 52 20 50 55 52 50 | 4f 53 45 2e 0a 20 2a 0a |LAR PURP|OSE.. *.|
|00000b40| 20 2a 09 40 28 23 29 69 | 70 5f 6f 75 74 70 75 74 | *.@(#)i|p_output|
|00000b50| 2e 63 09 37 2e 31 33 20 | 28 42 65 72 6b 65 6c 65 |.c.7.13 |(Berkele|
|00000b60| 79 29 20 36 2f 32 39 2f | 38 38 20 70 6c 75 73 20 |y) 6/29/|88 plus |
|00000b70| 4d 55 4c 54 49 43 41 53 | 54 20 31 2e 32 0a 20 2a |MULTICAS|T 1.2. *|
|00000b80| 2f 0a 0a 23 69 6e 63 6c | 75 64 65 20 22 70 61 72 |/..#incl|ude "par|
|00000b90| 61 6d 2e 68 22 0a 23 69 | 6e 63 6c 75 64 65 20 22 |am.h".#i|nclude "|
|00000ba0| 6d 62 75 66 2e 68 22 0a | 23 69 6e 63 6c 75 64 65 |mbuf.h".|#include|
|00000bb0| 20 22 65 72 72 6e 6f 2e | 68 22 0a 23 69 6e 63 6c | "errno.|h".#incl|
|00000bc0| 75 64 65 20 22 70 72 6f | 74 6f 73 77 2e 68 22 0a |ude "pro|tosw.h".|
|00000bd0| 23 69 6e 63 6c 75 64 65 | 20 22 73 6f 63 6b 65 74 |#include| "socket|
|00000be0| 2e 68 22 0a 23 69 6e 63 | 6c 75 64 65 20 22 73 6f |.h".#inc|lude "so|
|00000bf0| 63 6b 65 74 76 61 72 2e | 68 22 0a 0a 23 69 6e 63 |cketvar.|h"..#inc|
|00000c00| 6c 75 64 65 20 22 2e 2e | 2f 6e 65 74 2f 69 66 2e |lude "..|/net/if.|
|00000c10| 68 22 0a 23 69 6e 63 6c | 75 64 65 20 22 2e 2e 2f |h".#incl|ude "../|
|00000c20| 6e 65 74 2f 72 6f 75 74 | 65 2e 68 22 0a 0a 23 69 |net/rout|e.h"..#i|
|00000c30| 6e 63 6c 75 64 65 20 22 | 69 6e 2e 68 22 0a 23 69 |nclude "|in.h".#i|
|00000c40| 6e 63 6c 75 64 65 20 22 | 69 6e 5f 70 63 62 2e 68 |nclude "|in_pcb.h|
|00000c50| 22 0a 23 69 6e 63 6c 75 | 64 65 20 22 69 6e 5f 73 |".#inclu|de "in_s|
|00000c60| 79 73 74 6d 2e 68 22 0a | 23 69 6e 63 6c 75 64 65 |ystm.h".|#include|
|00000c70| 20 22 69 6e 5f 76 61 72 | 2e 68 22 0a 23 69 6e 63 | "in_var|.h".#inc|
|00000c80| 6c 75 64 65 20 22 69 70 | 2e 68 22 0a 23 69 6e 63 |lude "ip|.h".#inc|
|00000c90| 6c 75 64 65 20 22 69 70 | 5f 76 61 72 2e 68 22 0a |lude "ip|_var.h".|
|00000ca0| 0a 23 69 66 64 65 66 20 | 76 61 78 0a 23 69 6e 63 |.#ifdef |vax.#inc|
|00000cb0| 6c 75 64 65 20 22 2e 2e | 2f 6d 61 63 68 69 6e 65 |lude "..|/machine|
|00000cc0| 2f 6d 74 70 72 2e 68 22 | 0a 23 65 6e 64 69 66 0a |/mtpr.h"|.#endif.|
|00000cd0| 0a 73 74 72 75 63 74 20 | 6d 62 75 66 20 2a 69 70 |.struct |mbuf *ip|
|00000ce0| 5f 69 6e 73 65 72 74 6f | 70 74 69 6f 6e 73 28 29 |_inserto|ptions()|
|00000cf0| 3b 0a 0a 2f 2a 0a 20 2a | 20 49 50 20 6f 75 74 70 |;../*. *| IP outp|
|00000d00| 75 74 2e 20 20 54 68 65 | 20 70 61 63 6b 65 74 20 |ut.  The| packet |
|00000d10| 69 6e 20 6d 62 75 66 20 | 63 68 61 69 6e 20 6d 20 |in mbuf |chain m |
|00000d20| 63 6f 6e 74 61 69 6e 73 | 20 61 20 73 6b 65 6c 65 |contains| a skele|
|00000d30| 74 61 6c 20 49 50 0a 20 | 2a 20 68 65 61 64 65 72 |tal IP. |* header|
|00000d40| 20 28 77 69 74 68 20 6c | 65 6e 2c 20 6f 66 66 2c | (with l|en, off,|
|00000d50| 20 74 74 6c 2c 20 70 72 | 6f 74 6f 2c 20 74 6f 73 | ttl, pr|oto, tos|
|00000d60| 2c 20 73 72 63 2c 20 64 | 73 74 29 2e 0a 20 2a 20 |, src, d|st).. * |
|00000d70| 54 68 65 20 6d 62 75 66 | 20 63 68 61 69 6e 20 63 |The mbuf| chain c|
|00000d80| 6f 6e 74 61 69 6e 69 6e | 67 20 74 68 65 20 70 61 |ontainin|g the pa|
|00000d90| 63 6b 65 74 20 77 69 6c | 6c 20 62 65 20 66 72 65 |cket wil|l be fre|
|00000da0| 65 64 2e 0a 20 2a 20 54 | 68 65 20 6d 62 75 66 20 |ed.. * T|he mbuf |
|00000db0| 6f 70 74 2c 20 69 66 20 | 70 72 65 73 65 6e 74 2c |opt, if |present,|
|00000dc0| 20 77 69 6c 6c 20 6e 6f | 74 20 62 65 20 66 72 65 | will no|t be fre|
|00000dd0| 65 64 2e 0a 20 2a 2f 0a | 23 69 66 64 65 66 20 4d |ed.. */.|#ifdef M|
|00000de0| 55 4c 54 49 43 41 53 54 | 0a 69 70 5f 6f 75 74 70 |ULTICAST|.ip_outp|
|00000df0| 75 74 28 6d 30 2c 20 6f | 70 74 2c 20 72 6f 2c 20 |ut(m0, o|pt, ro, |
|00000e00| 66 6c 61 67 73 2c 20 6d | 6f 70 74 73 29 0a 23 65 |flags, m|opts).#e|
|00000e10| 6c 73 65 0a 69 70 5f 6f | 75 74 70 75 74 28 6d 30 |lse.ip_o|utput(m0|
|00000e20| 2c 20 6f 70 74 2c 20 72 | 6f 2c 20 66 6c 61 67 73 |, opt, r|o, flags|
|00000e30| 29 0a 23 65 6e 64 69 66 | 20 4d 55 4c 54 49 43 41 |).#endif| MULTICA|
|00000e40| 53 54 0a 09 73 74 72 75 | 63 74 20 6d 62 75 66 20 |ST..stru|ct mbuf |
|00000e50| 2a 6d 30 3b 0a 09 73 74 | 72 75 63 74 20 6d 62 75 |*m0;..st|ruct mbu|
|00000e60| 66 20 2a 6f 70 74 3b 0a | 09 73 74 72 75 63 74 20 |f *opt;.|.struct |
|00000e70| 72 6f 75 74 65 20 2a 72 | 6f 3b 0a 09 69 6e 74 20 |route *r|o;..int |
|00000e80| 66 6c 61 67 73 3b 0a 23 | 69 66 64 65 66 20 4d 55 |flags;.#|ifdef MU|
|00000e90| 4c 54 49 43 41 53 54 0a | 09 73 74 72 75 63 74 20 |LTICAST.|.struct |
|00000ea0| 6d 62 75 66 20 2a 6d 6f | 70 74 73 3b 0a 23 65 6e |mbuf *mo|pts;.#en|
|00000eb0| 64 69 66 20 4d 55 4c 54 | 49 43 41 53 54 0a 7b 0a |dif MULT|ICAST.{.|
|00000ec0| 09 72 65 67 69 73 74 65 | 72 20 73 74 72 75 63 74 |.registe|r struct|
|00000ed0| 20 69 70 20 2a 69 70 2c | 20 2a 6d 68 69 70 3b 0a | ip *ip,| *mhip;.|
|00000ee0| 09 72 65 67 69 73 74 65 | 72 20 73 74 72 75 63 74 |.registe|r struct|
|00000ef0| 20 69 66 6e 65 74 20 2a | 69 66 70 3b 0a 09 72 65 | ifnet *|ifp;..re|
|00000f00| 67 69 73 74 65 72 20 73 | 74 72 75 63 74 20 6d 62 |gister s|truct mb|
|00000f10| 75 66 20 2a 6d 20 3d 20 | 6d 30 3b 0a 09 72 65 67 |uf *m = |m0;..reg|
|00000f20| 69 73 74 65 72 20 69 6e | 74 20 68 6c 65 6e 20 3d |ister in|t hlen =|
|00000f30| 20 73 69 7a 65 6f 66 20 | 28 73 74 72 75 63 74 20 | sizeof |(struct |
|00000f40| 69 70 29 3b 0a 09 69 6e | 74 20 6c 65 6e 2c 20 6f |ip);..in|t len, o|
|00000f50| 66 66 2c 20 65 72 72 6f | 72 20 3d 20 30 3b 0a 09 |ff, erro|r = 0;..|
|00000f60| 73 74 72 75 63 74 20 72 | 6f 75 74 65 20 69 70 72 |struct r|oute ipr|
|00000f70| 6f 75 74 65 3b 0a 09 73 | 74 72 75 63 74 20 73 6f |oute;..s|truct so|
|00000f80| 63 6b 61 64 64 72 5f 69 | 6e 20 2a 64 73 74 3b 0a |ckaddr_i|n *dst;.|
|00000f90| 0a 09 69 66 20 28 6f 70 | 74 29 20 7b 0a 09 09 6d |..if (op|t) {...m|
|00000fa0| 20 3d 20 69 70 5f 69 6e | 73 65 72 74 6f 70 74 69 | = ip_in|sertopti|
|00000fb0| 6f 6e 73 28 6d 2c 20 6f | 70 74 2c 20 26 6c 65 6e |ons(m, o|pt, &len|
|00000fc0| 29 3b 0a 09 09 68 6c 65 | 6e 20 3d 20 6c 65 6e 3b |);...hle|n = len;|
|00000fd0| 0a 09 7d 0a 09 69 70 20 | 3d 20 6d 74 6f 64 28 6d |..}..ip |= mtod(m|
|00000fe0| 2c 20 73 74 72 75 63 74 | 20 69 70 20 2a 29 3b 0a |, struct| ip *);.|
|00000ff0| 09 2f 2a 0a 09 20 2a 20 | 46 69 6c 6c 20 69 6e 20 |./*.. * |Fill in |
|00001000| 49 50 20 68 65 61 64 65 | 72 2e 0a 09 20 2a 2f 0a |IP heade|r... */.|
|00001010| 09 69 66 20 28 28 66 6c | 61 67 73 20 26 20 49 50 |.if ((fl|ags & IP|
|00001020| 5f 46 4f 52 57 41 52 44 | 49 4e 47 29 20 3d 3d 20 |_FORWARD|ING) == |
|00001030| 30 29 20 7b 0a 09 09 69 | 70 2d 3e 69 70 5f 76 20 |0) {...i|p->ip_v |
|00001040| 3d 20 49 50 56 45 52 53 | 49 4f 4e 3b 0a 09 09 69 |= IPVERS|ION;...i|
|00001050| 70 2d 3e 69 70 5f 6f 66 | 66 20 26 3d 20 49 50 5f |p->ip_of|f &= IP_|
|00001060| 44 46 3b 0a 09 09 69 70 | 2d 3e 69 70 5f 69 64 20 |DF;...ip|->ip_id |
|00001070| 3d 20 68 74 6f 6e 73 28 | 69 70 5f 69 64 2b 2b 29 |= htons(|ip_id++)|
|00001080| 3b 0a 09 09 69 70 2d 3e | 69 70 5f 68 6c 20 3d 20 |;...ip->|ip_hl = |
|00001090| 68 6c 65 6e 20 3e 3e 20 | 32 3b 0a 09 7d 20 65 6c |hlen >> |2;..} el|
|000010a0| 73 65 0a 09 09 68 6c 65 | 6e 20 3d 20 69 70 2d 3e |se...hle|n = ip->|
|000010b0| 69 70 5f 68 6c 20 3c 3c | 20 32 3b 0a 0a 09 2f 2a |ip_hl <<| 2;.../*|
|000010c0| 0a 09 20 2a 20 52 6f 75 | 74 65 20 70 61 63 6b 65 |.. * Rou|te packe|
|000010d0| 74 2e 0a 09 20 2a 2f 0a | 09 69 66 20 28 72 6f 20 |t... */.|.if (ro |
|000010e0| 3d 3d 20 30 29 20 7b 0a | 09 09 72 6f 20 3d 20 26 |== 0) {.|..ro = &|
|000010f0| 69 70 72 6f 75 74 65 3b | 0a 09 09 62 7a 65 72 6f |iproute;|...bzero|
|00001100| 28 28 63 61 64 64 72 5f | 74 29 72 6f 2c 20 73 69 |((caddr_|t)ro, si|
|00001110| 7a 65 6f 66 20 28 2a 72 | 6f 29 29 3b 0a 09 7d 0a |zeof (*r|o));..}.|
|00001120| 09 64 73 74 20 3d 20 28 | 73 74 72 75 63 74 20 73 |.dst = (|struct s|
|00001130| 6f 63 6b 61 64 64 72 5f | 69 6e 20 2a 29 26 72 6f |ockaddr_|in *)&ro|
|00001140| 2d 3e 72 6f 5f 64 73 74 | 3b 0a 09 2f 2a 0a 09 20 |->ro_dst|;../*.. |
|00001150| 2a 20 49 66 20 74 68 65 | 72 65 20 69 73 20 61 20 |* If the|re is a |
|00001160| 63 61 63 68 65 64 20 72 | 6f 75 74 65 2c 0a 09 20 |cached r|oute,.. |
|00001170| 2a 20 63 68 65 63 6b 20 | 74 68 61 74 20 69 74 20 |* check |that it |
|00001180| 69 73 20 74 6f 20 74 68 | 65 20 73 61 6d 65 20 64 |is to th|e same d|
|00001190| 65 73 74 69 6e 61 74 69 | 6f 6e 0a 09 20 2a 20 61 |estinati|on.. * a|
|000011a0| 6e 64 20 69 73 20 73 74 | 69 6c 6c 20 75 70 2e 20 |nd is st|ill up. |
|000011b0| 20 49 66 20 6e 6f 74 2c | 20 66 72 65 65 20 69 74 | If not,| free it|
|000011c0| 20 61 6e 64 20 74 72 79 | 20 61 67 61 69 6e 2e 0a | and try| again..|
|000011d0| 09 20 2a 2f 0a 09 69 66 | 20 28 72 6f 2d 3e 72 6f |. */..if| (ro->ro|
|000011e0| 5f 72 74 20 26 26 20 28 | 28 72 6f 2d 3e 72 6f 5f |_rt && (|(ro->ro_|
|000011f0| 72 74 2d 3e 72 74 5f 66 | 6c 61 67 73 20 26 20 52 |rt->rt_f|lags & R|
|00001200| 54 46 5f 55 50 29 20 3d | 3d 20 30 20 7c 7c 0a 09 |TF_UP) =|= 0 ||..|
|00001210| 20 20 20 64 73 74 2d 3e | 73 69 6e 5f 61 64 64 72 |   dst->|sin_addr|
|00001220| 2e 73 5f 61 64 64 72 20 | 21 3d 20 69 70 2d 3e 69 |.s_addr |!= ip->i|
|00001230| 70 5f 64 73 74 2e 73 5f | 61 64 64 72 29 29 20 7b |p_dst.s_|addr)) {|
|00001240| 0a 09 09 52 54 46 52 45 | 45 28 72 6f 2d 3e 72 6f |...RTFRE|E(ro->ro|
|00001250| 5f 72 74 29 3b 0a 09 09 | 72 6f 2d 3e 72 6f 5f 72 |_rt);...|ro->ro_r|
|00001260| 74 20 3d 20 28 73 74 72 | 75 63 74 20 72 74 65 6e |t = (str|uct rten|
|00001270| 74 72 79 20 2a 29 30 3b | 0a 09 7d 0a 09 69 66 20 |try *)0;|..}..if |
|00001280| 28 72 6f 2d 3e 72 6f 5f | 72 74 20 3d 3d 20 30 29 |(ro->ro_|rt == 0)|
|00001290| 20 7b 0a 09 09 64 73 74 | 2d 3e 73 69 6e 5f 66 61 | {...dst|->sin_fa|
|000012a0| 6d 69 6c 79 20 3d 20 41 | 46 5f 49 4e 45 54 3b 0a |mily = A|F_INET;.|
|000012b0| 09 09 64 73 74 2d 3e 73 | 69 6e 5f 61 64 64 72 20 |..dst->s|in_addr |
|000012c0| 3d 20 69 70 2d 3e 69 70 | 5f 64 73 74 3b 0a 09 7d |= ip->ip|_dst;..}|
|000012d0| 0a 09 2f 2a 0a 09 20 2a | 20 49 66 20 72 6f 75 74 |../*.. *| If rout|
|000012e0| 69 6e 67 20 74 6f 20 69 | 6e 74 65 72 66 61 63 65 |ing to i|nterface|
|000012f0| 20 6f 6e 6c 79 2c 0a 09 | 20 2a 20 73 68 6f 72 74 | only,..| * short|
|00001300| 20 63 69 72 63 75 69 74 | 20 72 6f 75 74 69 6e 67 | circuit| routing|
|00001310| 20 6c 6f 6f 6b 75 70 2e | 0a 09 20 2a 2f 0a 09 69 | lookup.|.. */..i|
|00001320| 66 20 28 66 6c 61 67 73 | 20 26 20 49 50 5f 52 4f |f (flags| & IP_RO|
|00001330| 55 54 45 54 4f 49 46 29 | 20 7b 0a 09 09 73 74 72 |UTETOIF)| {...str|
|00001340| 75 63 74 20 69 6e 5f 69 | 66 61 64 64 72 20 2a 69 |uct in_i|faddr *i|
|00001350| 61 3b 0a 0a 09 09 69 61 | 20 3d 20 28 73 74 72 75 |a;....ia| = (stru|
|00001360| 63 74 20 69 6e 5f 69 66 | 61 64 64 72 20 2a 29 69 |ct in_if|addr *)i|
|00001370| 66 61 5f 69 66 77 69 74 | 68 64 73 74 61 64 64 72 |fa_ifwit|hdstaddr|
|00001380| 28 28 73 74 72 75 63 74 | 20 73 6f 63 6b 61 64 64 |((struct| sockadd|
|00001390| 72 20 2a 29 64 73 74 29 | 3b 0a 09 09 69 66 20 28 |r *)dst)|;...if (|
|000013a0| 69 61 20 3d 3d 20 30 29 | 0a 09 09 09 69 61 20 3d |ia == 0)|....ia =|
|000013b0| 20 69 6e 5f 69 61 6f 6e | 6e 65 74 6f 66 28 69 6e | in_iaon|netof(in|
|000013c0| 5f 6e 65 74 6f 66 28 69 | 70 2d 3e 69 70 5f 64 73 |_netof(i|p->ip_ds|
|000013d0| 74 29 29 3b 0a 09 09 69 | 66 20 28 69 61 20 3d 3d |t));...i|f (ia ==|
|000013e0| 20 30 29 20 7b 0a 09 09 | 09 65 72 72 6f 72 20 3d | 0) {...|.error =|
|000013f0| 20 45 4e 45 54 55 4e 52 | 45 41 43 48 3b 0a 09 09 | ENETUNR|EACH;...|
|00001400| 09 67 6f 74 6f 20 62 61 | 64 3b 0a 09 09 7d 0a 09 |.goto ba|d;...}..|
|00001410| 09 69 66 70 20 3d 20 69 | 61 2d 3e 69 61 5f 69 66 |.ifp = i|a->ia_if|
|00001420| 70 3b 0a 09 7d 20 65 6c | 73 65 20 7b 0a 09 09 69 |p;..} el|se {...i|
|00001430| 66 20 28 72 6f 2d 3e 72 | 6f 5f 72 74 20 3d 3d 20 |f (ro->r|o_rt == |
|00001440| 30 29 0a 09 09 09 72 74 | 61 6c 6c 6f 63 28 72 6f |0)....rt|alloc(ro|
|00001450| 29 3b 0a 09 09 69 66 20 | 28 72 6f 2d 3e 72 6f 5f |);...if |(ro->ro_|
|00001460| 72 74 20 3d 3d 20 30 20 | 7c 7c 20 28 69 66 70 20 |rt == 0 ||| (ifp |
|00001470| 3d 20 72 6f 2d 3e 72 6f | 5f 72 74 2d 3e 72 74 5f |= ro->ro|_rt->rt_|
|00001480| 69 66 70 29 20 3d 3d 20 | 30 29 20 7b 0a 09 09 09 |ifp) == |0) {....|
|00001490| 69 66 20 28 69 6e 5f 6c | 6f 63 61 6c 61 64 64 72 |if (in_l|ocaladdr|
|000014a0| 28 69 70 2d 3e 69 70 5f | 64 73 74 29 29 0a 09 09 |(ip->ip_|dst))...|
|000014b0| 09 09 65 72 72 6f 72 20 | 3d 20 45 48 4f 53 54 55 |..error |= EHOSTU|
|000014c0| 4e 52 45 41 43 48 3b 0a | 09 09 09 65 6c 73 65 0a |NREACH;.|...else.|
|000014d0| 09 09 09 09 65 72 72 6f | 72 20 3d 20 45 4e 45 54 |....erro|r = ENET|
|000014e0| 55 4e 52 45 41 43 48 3b | 0a 09 09 09 67 6f 74 6f |UNREACH;|....goto|
|000014f0| 20 62 61 64 3b 0a 09 09 | 7d 0a 09 09 72 6f 2d 3e | bad;...|}...ro->|
|00001500| 72 6f 5f 72 74 2d 3e 72 | 74 5f 75 73 65 2b 2b 3b |ro_rt->r|t_use++;|
|00001510| 0a 09 09 69 66 20 28 72 | 6f 2d 3e 72 6f 5f 72 74 |...if (r|o->ro_rt|
|00001520| 2d 3e 72 74 5f 66 6c 61 | 67 73 20 26 20 52 54 46 |->rt_fla|gs & RTF|
|00001530| 5f 47 41 54 45 57 41 59 | 29 0a 09 09 09 64 73 74 |_GATEWAY|)....dst|
|00001540| 20 3d 20 28 73 74 72 75 | 63 74 20 73 6f 63 6b 61 | = (stru|ct socka|
|00001550| 64 64 72 5f 69 6e 20 2a | 29 26 72 6f 2d 3e 72 6f |ddr_in *|)&ro->ro|
|00001560| 5f 72 74 2d 3e 72 74 5f | 67 61 74 65 77 61 79 3b |_rt->rt_|gateway;|
|00001570| 0a 09 7d 0a 0a 23 69 66 | 64 65 66 20 4d 55 4c 54 |..}..#if|def MULT|
|00001580| 49 43 41 53 54 0a 09 69 | 66 20 28 49 4e 5f 4d 55 |ICAST..i|f (IN_MU|
|00001590| 4c 54 49 43 41 53 54 28 | 6e 74 6f 68 6c 28 69 70 |LTICAST(|ntohl(ip|
|000015a0| 2d 3e 69 70 5f 64 73 74 | 2e 73 5f 61 64 64 72 29 |->ip_dst|.s_addr)|
|000015b0| 29 29 20 7b 0a 09 09 73 | 74 72 75 63 74 20 69 70 |)) {...s|truct ip|
|000015c0| 5f 6d 6f 70 74 69 6f 6e | 73 20 2a 69 6d 6f 3b 0a |_moption|s *imo;.|
|000015d0| 09 09 73 74 72 75 63 74 | 20 69 6e 5f 6d 75 6c 74 |..struct| in_mult|
|000015e0| 69 20 2a 69 6e 6d 3b 0a | 09 09 65 78 74 65 72 6e |i *inm;.|..extern|
|000015f0| 20 73 74 72 75 63 74 20 | 69 66 6e 65 74 20 6c 6f | struct |ifnet lo|
|00001600| 69 66 3b 0a 09 09 65 78 | 74 65 72 6e 20 73 74 72 |if;...ex|tern str|
|00001610| 75 63 74 20 73 6f 63 6b | 65 74 20 2a 69 70 5f 6d |uct sock|et *ip_m|
|00001620| 72 6f 75 74 65 72 3b 0a | 09 09 2f 2a 0a 09 09 20 |router;.|../*... |
|00001630| 2a 20 49 50 20 64 65 73 | 74 69 6e 61 74 69 6f 6e |* IP des|tination|
|00001640| 20 61 64 64 72 65 73 73 | 20 69 73 20 6d 75 6c 74 | address| is mult|
|00001650| 69 63 61 73 74 2e 20 20 | 4d 61 6b 65 20 73 75 72 |icast.  |Make sur|
|00001660| 65 20 22 64 73 74 22 0a | 09 09 20 2a 20 73 74 69 |e "dst".|.. * sti|
|00001670| 6c 6c 20 70 6f 69 6e 74 | 73 20 74 6f 20 74 68 65 |ll point|s to the|
|00001680| 20 61 64 64 72 65 73 73 | 20 69 6e 20 22 72 6f 22 | address| in "ro"|
|00001690| 2e 20 20 28 49 74 20 6d | 61 79 20 68 61 76 65 20 |.  (It m|ay have |
|000016a0| 62 65 65 6e 0a 09 09 20 | 2a 20 63 68 61 6e 67 65 |been... |* change|
|000016b0| 64 20 74 6f 20 70 6f 69 | 6e 74 20 74 6f 20 61 20 |d to poi|nt to a |
|000016c0| 67 61 74 65 77 61 79 20 | 61 64 64 72 65 73 73 2c |gateway |address,|
|000016d0| 20 61 62 6f 76 65 2e 29 | 0a 09 09 20 2a 2f 0a 09 | above.)|... */..|
|000016e0| 09 64 73 74 20 3d 20 28 | 73 74 72 75 63 74 20 73 |.dst = (|struct s|
|000016f0| 6f 63 6b 61 64 64 72 5f | 69 6e 20 2a 29 26 72 6f |ockaddr_|in *)&ro|
|00001700| 2d 3e 72 6f 5f 64 73 74 | 3b 0a 09 09 2f 2a 0a 09 |->ro_dst|;.../*..|
|00001710| 09 20 2a 20 53 65 65 20 | 69 66 20 74 68 65 20 63 |. * See |if the c|
|00001720| 61 6c 6c 65 72 20 70 72 | 6f 76 69 64 65 64 20 61 |aller pr|ovided a|
|00001730| 6e 79 20 6d 75 6c 74 69 | 63 61 73 74 20 6f 70 74 |ny multi|cast opt|
|00001740| 69 6f 6e 73 0a 09 09 20 | 2a 2f 0a 09 09 69 66 20 |ions... |*/...if |
|00001750| 28 28 66 6c 61 67 73 20 | 26 20 49 50 5f 4d 55 4c |((flags |& IP_MUL|
|00001760| 54 49 43 41 53 54 4f 50 | 54 53 29 20 26 26 20 6d |TICASTOP|TS) && m|
|00001770| 6f 70 74 73 20 21 3d 20 | 4e 55 4c 4c 29 20 7b 0a |opts != |NULL) {.|
|00001780| 09 09 09 69 6d 6f 20 3d | 20 6d 74 6f 64 28 6d 6f |...imo =| mtod(mo|
|00001790| 70 74 73 2c 20 73 74 72 | 75 63 74 20 69 70 5f 6d |pts, str|uct ip_m|
|000017a0| 6f 70 74 69 6f 6e 73 20 | 2a 29 3b 0a 09 09 09 69 |options |*);....i|
|000017b0| 70 2d 3e 69 70 5f 74 74 | 6c 20 3d 20 69 6d 6f 2d |p->ip_tt|l = imo-|
|000017c0| 3e 69 6d 6f 5f 6d 75 6c | 74 69 63 61 73 74 5f 74 |>imo_mul|ticast_t|
|000017d0| 74 6c 3b 0a 09 09 09 69 | 66 20 28 69 6d 6f 2d 3e |tl;....i|f (imo->|
|000017e0| 69 6d 6f 5f 6d 75 6c 74 | 69 63 61 73 74 5f 69 66 |imo_mult|icast_if|
|000017f0| 70 20 21 3d 20 4e 55 4c | 4c 29 0a 09 09 09 09 69 |p != NUL|L).....i|
|00001800| 66 70 20 3d 20 69 6d 6f | 2d 3e 69 6d 6f 5f 6d 75 |fp = imo|->imo_mu|
|00001810| 6c 74 69 63 61 73 74 5f | 69 66 70 3b 0a 09 09 7d |lticast_|ifp;...}|
|00001820| 0a 09 09 65 6c 73 65 20 | 7b 0a 09 09 09 69 6d 6f |...else |{....imo|
|00001830| 20 3d 20 4e 55 4c 4c 3b | 0a 09 09 09 69 70 2d 3e | = NULL;|....ip->|
|00001840| 69 70 5f 74 74 6c 20 3d | 20 49 50 5f 44 45 46 41 |ip_ttl =| IP_DEFA|
|00001850| 55 4c 54 5f 4d 55 4c 54 | 49 43 41 53 54 5f 54 54 |ULT_MULT|ICAST_TT|
|00001860| 4c 3b 0a 09 09 7d 0a 09 | 09 2f 2a 0a 09 09 20 2a |L;...}..|./*... *|
|00001870| 20 43 6f 6e 66 69 72 6d | 20 74 68 61 74 20 74 68 | Confirm| that th|
|00001880| 65 20 6f 75 74 67 6f 69 | 6e 67 20 69 6e 74 65 72 |e outgoi|ng inter|
|00001890| 66 61 63 65 20 73 75 70 | 70 6f 72 74 73 20 6d 75 |face sup|ports mu|
|000018a0| 6c 74 69 63 61 73 74 2e | 0a 09 09 20 2a 2f 0a 09 |lticast.|... */..|
|000018b0| 09 69 66 20 28 28 69 66 | 70 2d 3e 69 66 5f 66 6c |.if ((if|p->if_fl|
|000018c0| 61 67 73 20 26 20 49 46 | 46 5f 4d 55 4c 54 49 43 |ags & IF|F_MULTIC|
|000018d0| 41 53 54 29 20 3d 3d 20 | 30 29 20 7b 0a 09 09 09 |AST) == |0) {....|
|000018e0| 65 72 72 6f 72 20 3d 20 | 45 4e 45 54 55 4e 52 45 |error = |ENETUNRE|
|000018f0| 41 43 48 3b 0a 09 09 09 | 67 6f 74 6f 20 62 61 64 |ACH;....|goto bad|
|00001900| 3b 0a 09 09 7d 0a 09 09 | 2f 2a 0a 09 09 20 2a 20 |;...}...|/*... * |
|00001910| 49 66 20 73 6f 75 72 63 | 65 20 61 64 64 72 65 73 |If sourc|e addres|
|00001920| 73 20 6e 6f 74 20 73 70 | 65 63 69 66 69 65 64 20 |s not sp|ecified |
|00001930| 79 65 74 2c 20 75 73 65 | 20 61 64 64 72 65 73 73 |yet, use| address|
|00001940| 0a 09 09 20 2a 20 6f 66 | 20 6f 75 74 67 6f 69 6e |... * of| outgoin|
|00001950| 67 20 69 6e 74 65 72 66 | 61 63 65 2e 0a 09 09 20 |g interf|ace.... |
|00001960| 2a 2f 0a 09 09 69 66 20 | 28 69 70 2d 3e 69 70 5f |*/...if |(ip->ip_|
|00001970| 73 72 63 2e 73 5f 61 64 | 64 72 20 3d 3d 20 49 4e |src.s_ad|dr == IN|
|00001980| 41 44 44 52 5f 41 4e 59 | 29 20 7b 0a 09 09 09 72 |ADDR_ANY|) {....r|
|00001990| 65 67 69 73 74 65 72 20 | 73 74 72 75 63 74 20 69 |egister |struct i|
|000019a0| 6e 5f 69 66 61 64 64 72 | 20 2a 69 61 3b 0a 0a 09 |n_ifaddr| *ia;...|
|000019b0| 09 09 66 6f 72 20 28 69 | 61 20 3d 20 69 6e 5f 69 |..for (i|a = in_i|
|000019c0| 66 61 64 64 72 3b 20 69 | 61 3b 20 69 61 20 3d 20 |faddr; i|a; ia = |
|000019d0| 69 61 2d 3e 69 61 5f 6e | 65 78 74 29 0a 09 09 09 |ia->ia_n|ext)....|
|000019e0| 09 69 66 20 28 69 61 2d | 3e 69 61 5f 69 66 70 20 |.if (ia-|>ia_ifp |
|000019f0| 3d 3d 20 69 66 70 29 20 | 7b 0a 09 09 09 09 09 69 |== ifp) |{......i|
|00001a00| 70 2d 3e 69 70 5f 73 72 | 63 20 3d 20 49 41 5f 53 |p->ip_sr|c = IA_S|
|00001a10| 49 4e 28 69 61 29 2d 3e | 73 69 6e 5f 61 64 64 72 |IN(ia)->|sin_addr|
|00001a20| 3b 0a 09 09 09 09 09 62 | 72 65 61 6b 3b 0a 09 09 |;......b|reak;...|
|00001a30| 09 09 7d 0a 09 09 7d 0a | 0a 09 09 49 4e 5f 4c 4f |..}...}.|...IN_LO|
|00001a40| 4f 4b 55 50 5f 4d 55 4c | 54 49 28 69 70 2d 3e 69 |OKUP_MUL|TI(ip->i|
|00001a50| 70 5f 64 73 74 2c 20 69 | 66 70 2c 20 69 6e 6d 29 |p_dst, i|fp, inm)|
|00001a60| 3b 0a 09 09 69 66 20 28 | 69 6e 6d 20 21 3d 20 4e |;...if (|inm != N|
|00001a70| 55 4c 4c 20 26 26 0a 09 | 09 20 20 20 28 69 6d 6f |ULL &&..|.   (imo|
|00001a80| 20 3d 3d 20 4e 55 4c 4c | 20 7c 7c 20 69 6d 6f 2d | == NULL| || imo-|
|00001a90| 3e 69 6d 6f 5f 6d 75 6c | 74 69 63 61 73 74 5f 6c |>imo_mul|ticast_l|
|00001aa0| 6f 6f 70 29 29 20 7b 0a | 09 09 09 2f 2a 0a 09 09 |oop)) {.|.../*...|
|00001ab0| 09 20 2a 20 49 66 20 77 | 65 20 62 65 6c 6f 6e 67 |. * If w|e belong|
|00001ac0| 20 74 6f 20 74 68 65 20 | 64 65 73 74 69 6e 61 74 | to the |destinat|
|00001ad0| 69 6f 6e 20 6d 75 6c 74 | 69 63 61 73 74 20 67 72 |ion mult|icast gr|
|00001ae0| 6f 75 70 0a 09 09 09 20 | 2a 20 6f 6e 20 74 68 65 |oup.... |* on the|
|00001af0| 20 6f 75 74 67 6f 69 6e | 67 20 69 6e 74 65 72 66 | outgoin|g interf|
|00001b00| 61 63 65 2c 20 61 6e 64 | 20 74 68 65 20 63 61 6c |ace, and| the cal|
|00001b10| 6c 65 72 20 64 69 64 20 | 6e 6f 74 0a 09 09 09 20 |ler did |not.... |
|00001b20| 2a 20 66 6f 72 62 69 64 | 20 6c 6f 6f 70 62 61 63 |* forbid| loopbac|
|00001b30| 6b 2c 20 6c 6f 6f 70 20 | 62 61 63 6b 20 61 20 63 |k, loop |back a c|
|00001b40| 6f 70 79 2e 0a 09 09 09 | 20 2a 2f 0a 09 09 09 69 |opy.....| */....i|
|00001b50| 70 5f 6d 6c 6f 6f 70 62 | 61 63 6b 28 69 66 70 2c |p_mloopb|ack(ifp,|
|00001b60| 20 6d 2c 20 64 73 74 29 | 3b 0a 09 09 7d 0a 09 09 | m, dst)|;...}...|
|00001b70| 65 6c 73 65 20 69 66 20 | 28 69 70 5f 6d 72 6f 75 |else if |(ip_mrou|
|00001b80| 74 65 72 20 26 26 20 28 | 66 6c 61 67 73 20 26 20 |ter && (|flags & |
|00001b90| 49 50 5f 46 4f 52 57 41 | 52 44 49 4e 47 29 20 3d |IP_FORWA|RDING) =|
|00001ba0| 3d 20 30 29 20 7b 0a 09 | 09 09 2f 2a 0a 09 09 09 |= 0) {..|../*....|
|00001bb0| 20 2a 20 49 66 20 77 65 | 20 61 72 65 20 61 63 74 | * If we| are act|
|00001bc0| 69 6e 67 20 61 73 20 61 | 20 6d 75 6c 74 69 63 61 |ing as a| multica|
|00001bd0| 73 74 20 72 6f 75 74 65 | 72 2c 20 70 65 72 66 6f |st route|r, perfo|
|00001be0| 72 6d 0a 09 09 09 20 2a | 20 6d 75 6c 74 69 63 61 |rm.... *| multica|
|00001bf0| 73 74 20 66 6f 72 77 61 | 72 64 69 6e 67 20 61 73 |st forwa|rding as|
|00001c00| 20 69 66 20 74 68 65 20 | 70 61 63 6b 65 74 20 68 | if the |packet h|
|00001c10| 61 64 20 6a 75 73 74 0a | 09 09 09 20 2a 20 61 72 |ad just.|... * ar|
|00001c20| 72 69 76 65 64 20 6f 6e | 20 74 68 65 20 69 6e 74 |rived on| the int|
|00001c30| 65 72 66 61 63 65 20 74 | 6f 20 77 68 69 63 68 20 |erface t|o which |
|00001c40| 77 65 20 61 72 65 20 61 | 62 6f 75 74 0a 09 09 09 |we are a|bout....|
|00001c50| 20 2a 20 74 6f 20 73 65 | 6e 64 2e 20 20 54 68 65 | * to se|nd.  The|
|00001c60| 20 6d 75 6c 74 69 63 61 | 73 74 20 66 6f 72 77 61 | multica|st forwa|
|00001c70| 72 64 69 6e 67 20 66 75 | 6e 63 74 69 6f 6e 0a 09 |rding fu|nction..|
|00001c80| 09 09 20 2a 20 72 65 63 | 75 72 73 69 76 65 6c 79 |.. * rec|ursively|
|00001c90| 20 63 61 6c 6c 73 20 74 | 68 69 73 20 66 75 6e 63 | calls t|his func|
|00001ca0| 74 69 6f 6e 2c 20 75 73 | 69 6e 67 20 74 68 65 0a |tion, us|ing the.|
|00001cb0| 09 09 09 20 2a 20 49 50 | 5f 46 4f 52 57 41 52 44 |... * IP|_FORWARD|
|00001cc0| 49 4e 47 20 66 6c 61 67 | 20 74 6f 20 70 72 65 76 |ING flag| to prev|
|00001cd0| 65 6e 74 20 69 6e 66 69 | 6e 69 74 65 20 72 65 63 |ent infi|nite rec|
|00001ce0| 75 72 73 69 6f 6e 2e 0a | 09 09 09 20 2a 0a 09 09 |ursion..|... *...|
|00001cf0| 09 20 2a 20 4d 75 6c 74 | 69 63 61 73 74 73 20 74 |. * Mult|icasts t|
|00001d00| 68 61 74 20 61 72 65 20 | 6c 6f 6f 70 65 64 20 62 |hat are |looped b|
|00001d10| 61 63 6b 20 62 79 20 69 | 70 5f 6d 6c 6f 6f 70 62 |ack by i|p_mloopb|
|00001d20| 61 63 6b 28 29 2c 0a 09 | 09 09 20 2a 20 61 62 6f |ack(),..|.. * abo|
|00001d30| 76 65 2c 20 77 69 6c 6c | 20 62 65 20 66 6f 72 77 |ve, will| be forw|
|00001d40| 61 72 64 65 64 20 62 79 | 20 74 68 65 20 69 70 5f |arded by| the ip_|
|00001d50| 69 6e 70 75 74 28 29 20 | 72 6f 75 74 69 6e 65 2c |input() |routine,|
|00001d60| 0a 09 09 09 20 2a 20 69 | 66 20 6e 65 63 65 73 73 |.... * i|f necess|
|00001d70| 61 72 79 2e 0a 09 09 09 | 20 2a 2f 0a 09 09 09 69 |ary.....| */....i|
|00001d80| 66 20 28 69 70 5f 6d 66 | 6f 72 77 61 72 64 28 69 |f (ip_mf|orward(i|
|00001d90| 70 2c 20 69 66 70 29 20 | 21 3d 20 30 29 20 7b 0a |p, ifp) |!= 0) {.|
|00001da0| 09 09 09 09 6d 5f 66 72 | 65 65 6d 28 6d 29 3b 0a |....m_fr|eem(m);.|
|00001db0| 09 09 09 09 67 6f 74 6f | 20 64 6f 6e 65 3b 0a 09 |....goto| done;..|
|00001dc0| 09 09 7d 0a 09 09 7d 0a | 09 09 2f 2a 0a 09 09 20 |..}...}.|../*... |
|00001dd0| 2a 20 4d 75 6c 74 69 63 | 61 73 74 73 20 77 69 74 |* Multic|asts wit|
|00001de0| 68 20 61 20 74 69 6d 65 | 2d 74 6f 2d 6c 69 76 65 |h a time|-to-live|
|00001df0| 20 6f 66 20 7a 65 72 6f | 20 6d 61 79 20 62 65 20 | of zero| may be |
|00001e00| 6c 6f 6f 70 65 64 2d 0a | 09 09 20 2a 20 62 61 63 |looped-.|.. * bac|
|00001e10| 6b 2c 20 61 62 6f 76 65 | 2c 20 62 75 74 20 6d 75 |k, above|, but mu|
|00001e20| 73 74 20 6e 6f 74 20 62 | 65 20 74 72 61 6e 73 6d |st not b|e transm|
|00001e30| 69 74 74 65 64 20 6f 6e | 20 61 20 6e 65 74 77 6f |itted on| a netwo|
|00001e40| 72 6b 2e 0a 09 09 20 2a | 20 41 6c 73 6f 2c 20 6d |rk.... *| Also, m|
|00001e50| 75 6c 74 69 63 61 73 74 | 73 20 61 64 64 72 65 73 |ulticast|s addres|
|00001e60| 73 65 64 20 74 6f 20 74 | 68 65 20 6c 6f 6f 70 62 |sed to t|he loopb|
|00001e70| 61 63 6b 20 69 6e 74 65 | 72 66 61 63 65 0a 09 09 |ack inte|rface...|
|00001e80| 20 2a 20 61 72 65 20 6e | 6f 74 20 73 65 6e 74 20 | * are n|ot sent |
|00001e90| 2d 2d 20 74 68 65 20 61 | 62 6f 76 65 20 63 61 6c |-- the a|bove cal|
|00001ea0| 6c 20 74 6f 20 69 70 5f | 6d 6c 6f 6f 70 62 61 63 |l to ip_|mloopbac|
|00001eb0| 6b 28 29 20 77 69 6c 6c | 0a 09 09 20 2a 20 6c 6f |k() will|... * lo|
|00001ec0| 6f 70 20 62 61 63 6b 20 | 61 20 63 6f 70 79 20 69 |op back |a copy i|
|00001ed0| 66 20 74 68 69 73 20 68 | 6f 73 74 20 61 63 74 75 |f this h|ost actu|
|00001ee0| 61 6c 6c 79 20 62 65 6c | 6f 6e 67 73 20 74 6f 20 |ally bel|ongs to |
|00001ef0| 74 68 65 0a 09 09 20 2a | 20 64 65 73 74 69 6e 61 |the... *| destina|
|00001f00| 74 69 6f 6e 20 67 72 6f | 75 70 20 6f 6e 20 74 68 |tion gro|up on th|
|00001f10| 65 20 6c 6f 6f 70 62 61 | 63 6b 20 69 6e 74 65 72 |e loopba|ck inter|
|00001f20| 66 61 63 65 2e 0a 09 09 | 20 2a 2f 0a 09 09 69 66 |face....| */...if|
|00001f30| 20 28 69 70 2d 3e 69 70 | 5f 74 74 6c 20 3d 3d 20 | (ip->ip|_ttl == |
|00001f40| 30 20 7c 7c 20 69 66 70 | 20 3d 3d 20 26 6c 6f 69 |0 || ifp| == &loi|
|00001f50| 66 29 20 7b 0a 09 09 09 | 6d 5f 66 72 65 65 6d 28 |f) {....|m_freem(|
|00001f60| 6d 29 3b 0a 09 09 09 67 | 6f 74 6f 20 64 6f 6e 65 |m);....g|oto done|
|00001f70| 3b 0a 09 09 7d 0a 0a 09 | 09 67 6f 74 6f 20 73 65 |;...}...|.goto se|
|00001f80| 6e 64 69 74 3b 0a 09 7d | 0a 23 65 6e 64 69 66 20 |ndit;..}|.#endif |
|00001f90| 4d 55 4c 54 49 43 41 53 | 54 0a 0a 23 69 66 6e 64 |MULTICAS|T..#ifnd|
|00001fa0| 65 66 20 6e 6f 74 64 65 | 66 0a 09 2f 2a 0a 09 20 |ef notde|f../*.. |
|00001fb0| 2a 20 49 66 20 73 6f 75 | 72 63 65 20 61 64 64 72 |* If sou|rce addr|
|00001fc0| 65 73 73 20 6e 6f 74 20 | 73 70 65 63 69 66 69 65 |ess not |specifie|
|00001fd0| 64 20 79 65 74 2c 20 75 | 73 65 20 61 64 64 72 65 |d yet, u|se addre|
|00001fe0| 73 73 0a 09 20 2a 20 6f | 66 20 6f 75 74 67 6f 69 |ss.. * o|f outgoi|
|00001ff0| 6e 67 20 69 6e 74 65 72 | 66 61 63 65 2e 0a 09 20 |ng inter|face... |
|00002000| 2a 2f 0a 09 69 66 20 28 | 69 70 2d 3e 69 70 5f 73 |*/..if (|ip->ip_s|
|00002010| 72 63 2e 73 5f 61 64 64 | 72 20 3d 3d 20 49 4e 41 |rc.s_add|r == INA|
|00002020| 44 44 52 5f 41 4e 59 29 | 20 7b 0a 09 09 72 65 67 |DDR_ANY)| {...reg|
|00002030| 69 73 74 65 72 20 73 74 | 72 75 63 74 20 69 6e 5f |ister st|ruct in_|
|00002040| 69 66 61 64 64 72 20 2a | 69 61 3b 0a 0a 09 09 66 |ifaddr *|ia;....f|
|00002050| 6f 72 20 28 69 61 20 3d | 20 69 6e 5f 69 66 61 64 |or (ia =| in_ifad|
|00002060| 64 72 3b 20 69 61 3b 20 | 69 61 20 3d 20 69 61 2d |dr; ia; |ia = ia-|
|00002070| 3e 69 61 5f 6e 65 78 74 | 29 0a 09 09 09 69 66 20 |>ia_next|)....if |
|00002080| 28 69 61 2d 3e 69 61 5f | 69 66 70 20 3d 3d 20 69 |(ia->ia_|ifp == i|
|00002090| 66 70 29 20 7b 0a 09 09 | 09 09 69 70 2d 3e 69 70 |fp) {...|..ip->ip|
|000020a0| 5f 73 72 63 20 3d 20 49 | 41 5f 53 49 4e 28 69 61 |_src = I|A_SIN(ia|
|000020b0| 29 2d 3e 73 69 6e 5f 61 | 64 64 72 3b 0a 09 09 09 |)->sin_a|ddr;....|
|000020c0| 09 62 72 65 61 6b 3b 0a | 09 09 09 7d 0a 09 7d 0a |.break;.|...}..}.|
|000020d0| 23 65 6e 64 69 66 0a 09 | 2f 2a 0a 09 20 2a 20 4c |#endif..|/*.. * L|
|000020e0| 6f 6f 6b 20 66 6f 72 20 | 62 72 6f 61 64 63 61 73 |ook for |broadcas|
|000020f0| 74 20 61 64 64 72 65 73 | 73 20 61 6e 64 0a 09 20 |t addres|s and.. |
|00002100| 2a 20 61 6e 64 20 76 65 | 72 69 66 79 20 75 73 65 |* and ve|rify use|
|00002110| 72 20 69 73 20 61 6c 6c | 6f 77 65 64 20 74 6f 20 |r is all|owed to |
|00002120| 73 65 6e 64 0a 09 20 2a | 20 73 75 63 68 20 61 20 |send.. *| such a |
|00002130| 70 61 63 6b 65 74 2e 0a | 09 20 2a 2f 0a 09 69 66 |packet..|. */..if|
|00002140| 20 28 69 6e 5f 62 72 6f | 61 64 63 61 73 74 28 64 | (in_bro|adcast(d|
|00002150| 73 74 2d 3e 73 69 6e 5f | 61 64 64 72 29 29 20 7b |st->sin_|addr)) {|
|00002160| 0a 09 09 69 66 20 28 28 | 69 66 70 2d 3e 69 66 5f |...if ((|ifp->if_|
|00002170| 66 6c 61 67 73 20 26 20 | 49 46 46 5f 42 52 4f 41 |flags & |IFF_BROA|
|00002180| 44 43 41 53 54 29 20 3d | 3d 20 30 29 20 7b 0a 09 |DCAST) =|= 0) {..|
|00002190| 09 09 65 72 72 6f 72 20 | 3d 20 45 41 44 44 52 4e |..error |= EADDRN|
|000021a0| 4f 54 41 56 41 49 4c 3b | 0a 09 09 09 67 6f 74 6f |OTAVAIL;|....goto|
|000021b0| 20 62 61 64 3b 0a 09 09 | 7d 0a 09 09 69 66 20 28 | bad;...|}...if (|
|000021c0| 28 66 6c 61 67 73 20 26 | 20 49 50 5f 41 4c 4c 4f |(flags &| IP_ALLO|
|000021d0| 57 42 52 4f 41 44 43 41 | 53 54 29 20 3d 3d 20 30 |WBROADCA|ST) == 0|
|000021e0| 29 20 7b 0a 09 09 09 65 | 72 72 6f 72 20 3d 20 45 |) {....e|rror = E|
|000021f0| 41 43 43 45 53 3b 0a 09 | 09 09 67 6f 74 6f 20 62 |ACCES;..|..goto b|
|00002200| 61 64 3b 0a 09 09 7d 0a | 09 09 2f 2a 20 64 6f 6e |ad;...}.|../* don|
|00002210| 27 74 20 61 6c 6c 6f 77 | 20 62 72 6f 61 64 63 61 |'t allow| broadca|
|00002220| 73 74 20 6d 65 73 73 61 | 67 65 73 20 74 6f 20 62 |st messa|ges to b|
|00002230| 65 20 66 72 61 67 6d 65 | 6e 74 65 64 20 2a 2f 0a |e fragme|nted */.|
|00002240| 09 09 69 66 20 28 69 70 | 2d 3e 69 70 5f 6c 65 6e |..if (ip|->ip_len|
|00002250| 20 3e 20 69 66 70 2d 3e | 69 66 5f 6d 74 75 29 20 | > ifp->|if_mtu) |
|00002260| 7b 0a 09 09 09 65 72 72 | 6f 72 20 3d 20 45 4d 53 |{....err|or = EMS|
|00002270| 47 53 49 5a 45 3b 0a 09 | 09 09 67 6f 74 6f 20 62 |GSIZE;..|..goto b|
|00002280| 61 64 3b 0a 09 09 7d 0a | 09 7d 0a 0a 23 69 66 64 |ad;...}.|.}..#ifd|
|00002290| 65 66 20 4d 55 4c 54 49 | 43 41 53 54 0a 73 65 6e |ef MULTI|CAST.sen|
|000022a0| 64 69 74 3a 0a 23 65 6e | 64 69 66 20 4d 55 4c 54 |dit:.#en|dif MULT|
|000022b0| 49 43 41 53 54 0a 09 2f | 2a 0a 09 20 2a 20 49 66 |ICAST../|*.. * If|
|000022c0| 20 73 6d 61 6c 6c 20 65 | 6e 6f 75 67 68 20 66 6f | small e|nough fo|
|000022d0| 72 20 69 6e 74 65 72 66 | 61 63 65 2c 20 63 61 6e |r interf|ace, can|
|000022e0| 20 6a 75 73 74 20 73 65 | 6e 64 20 64 69 72 65 63 | just se|nd direc|
|000022f0| 74 6c 79 2e 0a 09 20 2a | 2f 0a 09 69 66 20 28 69 |tly... *|/..if (i|
|00002300| 70 2d 3e 69 70 5f 6c 65 | 6e 20 3c 3d 20 69 66 70 |p->ip_le|n <= ifp|
|00002310| 2d 3e 69 66 5f 6d 74 75 | 29 20 7b 0a 09 09 69 70 |->if_mtu|) {...ip|
|00002320| 2d 3e 69 70 5f 6c 65 6e | 20 3d 20 68 74 6f 6e 73 |->ip_len| = htons|
|00002330| 28 28 75 5f 73 68 6f 72 | 74 29 69 70 2d 3e 69 70 |((u_shor|t)ip->ip|
|00002340| 5f 6c 65 6e 29 3b 0a 09 | 09 69 70 2d 3e 69 70 5f |_len);..|.ip->ip_|
|00002350| 6f 66 66 20 3d 20 68 74 | 6f 6e 73 28 28 75 5f 73 |off = ht|ons((u_s|
|00002360| 68 6f 72 74 29 69 70 2d | 3e 69 70 5f 6f 66 66 29 |hort)ip-|>ip_off)|
|00002370| 3b 0a 09 09 69 70 2d 3e | 69 70 5f 73 75 6d 20 3d |;...ip->|ip_sum =|
|00002380| 20 30 3b 0a 09 09 69 70 | 2d 3e 69 70 5f 73 75 6d | 0;...ip|->ip_sum|
|00002390| 20 3d 20 69 6e 5f 63 6b | 73 75 6d 28 6d 2c 20 68 | = in_ck|sum(m, h|
|000023a0| 6c 65 6e 29 3b 0a 09 09 | 65 72 72 6f 72 20 3d 20 |len);...|error = |
|000023b0| 28 2a 69 66 70 2d 3e 69 | 66 5f 6f 75 74 70 75 74 |(*ifp->i|f_output|
|000023c0| 29 28 69 66 70 2c 20 6d | 2c 20 28 73 74 72 75 63 |)(ifp, m|, (struc|
|000023d0| 74 20 73 6f 63 6b 61 64 | 64 72 20 2a 29 64 73 74 |t sockad|dr *)dst|
|000023e0| 29 3b 0a 09 09 67 6f 74 | 6f 20 64 6f 6e 65 3b 0a |);...got|o done;.|
|000023f0| 09 7d 0a 0a 09 2f 2a 0a | 09 20 2a 20 54 6f 6f 20 |.}.../*.|. * Too |
|00002400| 6c 61 72 67 65 20 66 6f | 72 20 69 6e 74 65 72 66 |large fo|r interf|
|00002410| 61 63 65 3b 20 66 72 61 | 67 6d 65 6e 74 20 69 66 |ace; fra|gment if|
|00002420| 20 70 6f 73 73 69 62 6c | 65 2e 0a 09 20 2a 20 4d | possibl|e... * M|
|00002430| 75 73 74 20 62 65 20 61 | 62 6c 65 20 74 6f 20 70 |ust be a|ble to p|
|00002440| 75 74 20 61 74 20 6c 65 | 61 73 74 20 38 20 62 79 |ut at le|ast 8 by|
|00002450| 74 65 73 20 70 65 72 20 | 66 72 61 67 6d 65 6e 74 |tes per |fragment|
|00002460| 2e 0a 09 20 2a 2f 0a 09 | 69 66 20 28 69 70 2d 3e |... */..|if (ip->|
|00002470| 69 70 5f 6f 66 66 20 26 | 20 49 50 5f 44 46 29 20 |ip_off &| IP_DF) |
|00002480| 7b 0a 09 09 65 72 72 6f | 72 20 3d 20 45 4d 53 47 |{...erro|r = EMSG|
|00002490| 53 49 5a 45 3b 0a 09 09 | 67 6f 74 6f 20 62 61 64 |SIZE;...|goto bad|
|000024a0| 3b 0a 09 7d 0a 09 6c 65 | 6e 20 3d 20 28 69 66 70 |;..}..le|n = (ifp|
|000024b0| 2d 3e 69 66 5f 6d 74 75 | 20 2d 20 68 6c 65 6e 29 |->if_mtu| - hlen)|
|000024c0| 20 26 7e 20 37 3b 0a 09 | 69 66 20 28 6c 65 6e 20 | &~ 7;..|if (len |
|000024d0| 3c 20 38 29 20 7b 0a 09 | 09 65 72 72 6f 72 20 3d |< 8) {..|.error =|
|000024e0| 20 45 4d 53 47 53 49 5a | 45 3b 0a 09 09 67 6f 74 | EMSGSIZ|E;...got|
|000024f0| 6f 20 62 61 64 3b 0a 09 | 7d 0a 0a 20 20 20 20 7b |o bad;..|}..    {|
|00002500| 0a 09 69 6e 74 20 6d 68 | 6c 65 6e 2c 20 66 69 72 |..int mh|len, fir|
|00002510| 73 74 6c 65 6e 20 3d 20 | 6c 65 6e 3b 0a 09 73 74 |stlen = |len;..st|
|00002520| 72 75 63 74 20 6d 62 75 | 66 20 2a 2a 6d 6e 65 78 |ruct mbu|f **mnex|
|00002530| 74 20 3d 20 26 6d 2d 3e | 6d 5f 61 63 74 3b 0a 0a |t = &m->|m_act;..|
|00002540| 09 2f 2a 0a 09 20 2a 20 | 4c 6f 6f 70 20 74 68 72 |./*.. * |Loop thr|
|00002550| 6f 75 67 68 20 6c 65 6e | 67 74 68 20 6f 66 20 73 |ough len|gth of s|
|00002560| 65 67 6d 65 6e 74 20 61 | 66 74 65 72 20 66 69 72 |egment a|fter fir|
|00002570| 73 74 20 66 72 61 67 6d | 65 6e 74 2c 0a 09 20 2a |st fragm|ent,.. *|
|00002580| 20 6d 61 6b 65 20 6e 65 | 77 20 68 65 61 64 65 72 | make ne|w header|
|00002590| 20 61 6e 64 20 63 6f 70 | 79 20 64 61 74 61 20 6f | and cop|y data o|
|000025a0| 66 20 65 61 63 68 20 70 | 61 72 74 20 61 6e 64 20 |f each p|art and |
|000025b0| 6c 69 6e 6b 20 6f 6e 74 | 6f 20 63 68 61 69 6e 2e |link ont|o chain.|
|000025c0| 0a 09 20 2a 2f 0a 09 6d | 30 20 3d 20 6d 3b 0a 09 |.. */..m|0 = m;..|
|000025d0| 6d 68 6c 65 6e 20 3d 20 | 73 69 7a 65 6f 66 20 28 |mhlen = |sizeof (|
|000025e0| 73 74 72 75 63 74 20 69 | 70 29 3b 0a 09 66 6f 72 |struct i|p);..for|
|000025f0| 20 28 6f 66 66 20 3d 20 | 68 6c 65 6e 20 2b 20 6c | (off = |hlen + l|
|00002600| 65 6e 3b 20 6f 66 66 20 | 3c 20 69 70 2d 3e 69 70 |en; off |< ip->ip|
|00002610| 5f 6c 65 6e 3b 20 6f 66 | 66 20 2b 3d 20 6c 65 6e |_len; of|f += len|
|00002620| 29 20 7b 0a 09 09 4d 47 | 45 54 28 6d 2c 20 4d 5f |) {...MG|ET(m, M_|
|00002630| 44 4f 4e 54 57 41 49 54 | 2c 20 4d 54 5f 48 45 41 |DONTWAIT|, MT_HEA|
|00002640| 44 45 52 29 3b 0a 09 09 | 69 66 20 28 6d 20 3d 3d |DER);...|if (m ==|
|00002650| 20 30 29 20 7b 0a 09 09 | 09 65 72 72 6f 72 20 3d | 0) {...|.error =|
|00002660| 20 45 4e 4f 42 55 46 53 | 3b 0a 09 09 09 67 6f 74 | ENOBUFS|;....got|
|00002670| 6f 20 73 65 6e 64 6f 72 | 66 72 65 65 3b 0a 09 09 |o sendor|free;...|
|00002680| 7d 0a 09 09 6d 2d 3e 6d | 5f 6f 66 66 20 3d 20 4d |}...m->m|_off = M|
|00002690| 4d 41 58 4f 46 46 20 2d | 20 68 6c 65 6e 3b 0a 09 |MAXOFF -| hlen;..|
|000026a0| 09 6d 68 69 70 20 3d 20 | 6d 74 6f 64 28 6d 2c 20 |.mhip = |mtod(m, |
|000026b0| 73 74 72 75 63 74 20 69 | 70 20 2a 29 3b 0a 09 09 |struct i|p *);...|
|000026c0| 2a 6d 68 69 70 20 3d 20 | 2a 69 70 3b 0a 09 09 69 |*mhip = |*ip;...i|
|000026d0| 66 20 28 68 6c 65 6e 20 | 3e 20 73 69 7a 65 6f 66 |f (hlen |> sizeof|
|000026e0| 20 28 73 74 72 75 63 74 | 20 69 70 29 29 20 7b 0a | (struct| ip)) {.|
|000026f0| 09 09 09 6d 68 6c 65 6e | 20 3d 20 69 70 5f 6f 70 |...mhlen| = ip_op|
|00002700| 74 63 6f 70 79 28 69 70 | 2c 20 6d 68 69 70 29 20 |tcopy(ip|, mhip) |
|00002710| 2b 20 73 69 7a 65 6f 66 | 20 28 73 74 72 75 63 74 |+ sizeof| (struct|
|00002720| 20 69 70 29 3b 0a 09 09 | 09 6d 68 69 70 2d 3e 69 | ip);...|.mhip->i|
|00002730| 70 5f 68 6c 20 3d 20 6d | 68 6c 65 6e 20 3e 3e 20 |p_hl = m|hlen >> |
|00002740| 32 3b 0a 09 09 7d 0a 09 | 09 6d 2d 3e 6d 5f 6c 65 |2;...}..|.m->m_le|
|00002750| 6e 20 3d 20 6d 68 6c 65 | 6e 3b 0a 09 09 6d 68 69 |n = mhle|n;...mhi|
|00002760| 70 2d 3e 69 70 5f 6f 66 | 66 20 3d 20 28 28 6f 66 |p->ip_of|f = ((of|
|00002770| 66 20 2d 20 68 6c 65 6e | 29 20 3e 3e 20 33 29 20 |f - hlen|) >> 3) |
|00002780| 2b 20 28 69 70 2d 3e 69 | 70 5f 6f 66 66 20 26 20 |+ (ip->i|p_off & |
|00002790| 7e 49 50 5f 4d 46 29 3b | 0a 09 09 69 66 20 28 69 |~IP_MF);|...if (i|
|000027a0| 70 2d 3e 69 70 5f 6f 66 | 66 20 26 20 49 50 5f 4d |p->ip_of|f & IP_M|
|000027b0| 46 29 0a 09 09 09 6d 68 | 69 70 2d 3e 69 70 5f 6f |F)....mh|ip->ip_o|
|000027c0| 66 66 20 7c 3d 20 49 50 | 5f 4d 46 3b 0a 09 09 69 |ff |= IP|_MF;...i|
|000027d0| 66 20 28 6f 66 66 20 2b | 20 6c 65 6e 20 3e 3d 20 |f (off +| len >= |
|000027e0| 69 70 2d 3e 69 70 5f 6c | 65 6e 29 0a 09 09 09 6c |ip->ip_l|en)....l|
|000027f0| 65 6e 20 3d 20 69 70 2d | 3e 69 70 5f 6c 65 6e 20 |en = ip-|>ip_len |
|00002800| 2d 20 6f 66 66 3b 0a 09 | 09 65 6c 73 65 0a 09 09 |- off;..|.else...|
|00002810| 09 6d 68 69 70 2d 3e 69 | 70 5f 6f 66 66 20 7c 3d |.mhip->i|p_off |=|
|00002820| 20 49 50 5f 4d 46 3b 0a | 09 09 6d 68 69 70 2d 3e | IP_MF;.|..mhip->|
|00002830| 69 70 5f 6c 65 6e 20 3d | 20 68 74 6f 6e 73 28 28 |ip_len =| htons((|
|00002840| 75 5f 73 68 6f 72 74 29 | 28 6c 65 6e 20 2b 20 6d |u_short)|(len + m|
|00002850| 68 6c 65 6e 29 29 3b 0a | 09 09 6d 2d 3e 6d 5f 6e |hlen));.|..m->m_n|
|00002860| 65 78 74 20 3d 20 6d 5f | 63 6f 70 79 28 6d 30 2c |ext = m_|copy(m0,|
|00002870| 20 6f 66 66 2c 20 6c 65 | 6e 29 3b 0a 09 09 69 66 | off, le|n);...if|
|00002880| 20 28 6d 2d 3e 6d 5f 6e | 65 78 74 20 3d 3d 20 30 | (m->m_n|ext == 0|
|00002890| 29 20 7b 0a 09 09 09 65 | 72 72 6f 72 20 3d 20 45 |) {....e|rror = E|
|000028a0| 4e 4f 42 55 46 53 3b 09 | 2f 2a 20 3f 3f 3f 20 2a |NOBUFS;.|/* ??? *|
|000028b0| 2f 0a 09 09 09 67 6f 74 | 6f 20 73 65 6e 64 6f 72 |/....got|o sendor|
|000028c0| 66 72 65 65 3b 0a 09 09 | 7d 0a 09 09 6d 68 69 70 |free;...|}...mhip|
|000028d0| 2d 3e 69 70 5f 6f 66 66 | 20 3d 20 68 74 6f 6e 73 |->ip_off| = htons|
|000028e0| 28 28 75 5f 73 68 6f 72 | 74 29 6d 68 69 70 2d 3e |((u_shor|t)mhip->|
|000028f0| 69 70 5f 6f 66 66 29 3b | 0a 09 09 6d 68 69 70 2d |ip_off);|...mhip-|
|00002900| 3e 69 70 5f 73 75 6d 20 | 3d 20 30 3b 0a 09 09 6d |>ip_sum |= 0;...m|
|00002910| 68 69 70 2d 3e 69 70 5f | 73 75 6d 20 3d 20 69 6e |hip->ip_|sum = in|
|00002920| 5f 63 6b 73 75 6d 28 6d | 2c 20 6d 68 6c 65 6e 29 |_cksum(m|, mhlen)|
|00002930| 3b 0a 09 09 2a 6d 6e 65 | 78 74 20 3d 20 6d 3b 0a |;...*mne|xt = m;.|
|00002940| 09 09 6d 6e 65 78 74 20 | 3d 20 26 6d 2d 3e 6d 5f |..mnext |= &m->m_|
|00002950| 61 63 74 3b 0a 09 7d 0a | 09 2f 2a 0a 09 20 2a 20 |act;..}.|./*.. * |
|00002960| 55 70 64 61 74 65 20 66 | 69 72 73 74 20 66 72 61 |Update f|irst fra|
|00002970| 67 6d 65 6e 74 20 62 79 | 20 74 72 69 6d 6d 69 6e |gment by| trimmin|
|00002980| 67 20 77 68 61 74 27 73 | 20 62 65 65 6e 20 63 6f |g what's| been co|
|00002990| 70 69 65 64 20 6f 75 74 | 0a 09 20 2a 20 61 6e 64 |pied out|.. * and|
|000029a0| 20 75 70 64 61 74 69 6e | 67 20 68 65 61 64 65 72 | updatin|g header|
|000029b0| 2c 20 74 68 65 6e 20 73 | 65 6e 64 20 65 61 63 68 |, then s|end each|
|000029c0| 20 66 72 61 67 6d 65 6e | 74 20 28 69 6e 20 6f 72 | fragmen|t (in or|
|000029d0| 64 65 72 29 2e 0a 09 20 | 2a 2f 0a 09 6d 5f 61 64 |der)... |*/..m_ad|
|000029e0| 6a 28 6d 30 2c 20 68 6c | 65 6e 20 2b 20 66 69 72 |j(m0, hl|en + fir|
|000029f0| 73 74 6c 65 6e 20 2d 20 | 69 70 2d 3e 69 70 5f 6c |stlen - |ip->ip_l|
|00002a00| 65 6e 29 3b 0a 09 69 70 | 2d 3e 69 70 5f 6c 65 6e |en);..ip|->ip_len|
|00002a10| 20 3d 20 68 74 6f 6e 73 | 28 28 75 5f 73 68 6f 72 | = htons|((u_shor|
|00002a20| 74 29 28 68 6c 65 6e 20 | 2b 20 66 69 72 73 74 6c |t)(hlen |+ firstl|
|00002a30| 65 6e 29 29 3b 0a 09 69 | 70 2d 3e 69 70 5f 6f 66 |en));..i|p->ip_of|
|00002a40| 66 20 3d 20 68 74 6f 6e | 73 28 28 75 5f 73 68 6f |f = hton|s((u_sho|
|00002a50| 72 74 29 28 69 70 2d 3e | 69 70 5f 6f 66 66 20 7c |rt)(ip->|ip_off ||
|00002a60| 20 49 50 5f 4d 46 29 29 | 3b 0a 09 69 70 2d 3e 69 | IP_MF))|;..ip->i|
|00002a70| 70 5f 73 75 6d 20 3d 20 | 30 3b 0a 09 69 70 2d 3e |p_sum = |0;..ip->|
|00002a80| 69 70 5f 73 75 6d 20 3d | 20 69 6e 5f 63 6b 73 75 |ip_sum =| in_cksu|
|00002a90| 6d 28 6d 30 2c 20 68 6c | 65 6e 29 3b 0a 73 65 6e |m(m0, hl|en);.sen|
|00002aa0| 64 6f 72 66 72 65 65 3a | 0a 09 66 6f 72 20 28 6d |dorfree:|..for (m|
|00002ab0| 20 3d 20 6d 30 3b 20 6d | 3b 20 6d 20 3d 20 6d 30 | = m0; m|; m = m0|
|00002ac0| 29 20 7b 0a 09 09 6d 30 | 20 3d 20 6d 2d 3e 6d 5f |) {...m0| = m->m_|
|00002ad0| 61 63 74 3b 0a 09 09 6d | 2d 3e 6d 5f 61 63 74 20 |act;...m|->m_act |
|00002ae0| 3d 20 30 3b 0a 09 09 69 | 66 20 28 65 72 72 6f 72 |= 0;...i|f (error|
|00002af0| 20 3d 3d 20 30 29 0a 09 | 09 09 65 72 72 6f 72 20 | == 0)..|..error |
|00002b00| 3d 20 28 2a 69 66 70 2d | 3e 69 66 5f 6f 75 74 70 |= (*ifp-|>if_outp|
|00002b10| 75 74 29 28 69 66 70 2c | 20 6d 2c 0a 09 09 09 20 |ut)(ifp,| m,.... |
|00002b20| 20 20 20 28 73 74 72 75 | 63 74 20 73 6f 63 6b 61 |   (stru|ct socka|
|00002b30| 64 64 72 20 2a 29 64 73 | 74 29 3b 0a 09 09 65 6c |ddr *)ds|t);...el|
|00002b40| 73 65 0a 09 09 09 6d 5f | 66 72 65 65 6d 28 6d 29 |se....m_|freem(m)|
|00002b50| 3b 0a 09 7d 0a 20 20 20 | 20 7d 0a 64 6f 6e 65 3a |;..}.   | }.done:|
|00002b60| 0a 09 69 66 20 28 72 6f | 20 3d 3d 20 26 69 70 72 |..if (ro| == &ipr|
|00002b70| 6f 75 74 65 20 26 26 20 | 28 66 6c 61 67 73 20 26 |oute && |(flags &|
|00002b80| 20 49 50 5f 52 4f 55 54 | 45 54 4f 49 46 29 20 3d | IP_ROUT|ETOIF) =|
|00002b90| 3d 20 30 20 26 26 20 72 | 6f 2d 3e 72 6f 5f 72 74 |= 0 && r|o->ro_rt|
|00002ba0| 29 0a 09 09 52 54 46 52 | 45 45 28 72 6f 2d 3e 72 |)...RTFR|EE(ro->r|
|00002bb0| 6f 5f 72 74 29 3b 0a 09 | 72 65 74 75 72 6e 20 28 |o_rt);..|return (|
|00002bc0| 65 72 72 6f 72 29 3b 0a | 62 61 64 3a 0a 09 6d 5f |error);.|bad:..m_|
|00002bd0| 66 72 65 65 6d 28 6d 30 | 29 3b 0a 09 67 6f 74 6f |freem(m0|);..goto|
|00002be0| 20 64 6f 6e 65 3b 0a 7d | 0a 0a 2f 2a 0a 20 2a 20 | done;.}|../*. * |
|00002bf0| 49 6e 73 65 72 74 20 49 | 50 20 6f 70 74 69 6f 6e |Insert I|P option|
|00002c00| 73 20 69 6e 74 6f 20 70 | 72 65 66 6f 72 6d 65 64 |s into p|reformed|
|00002c10| 20 70 61 63 6b 65 74 2e | 0a 20 2a 20 41 64 6a 75 | packet.|. * Adju|
|00002c20| 73 74 20 49 50 20 64 65 | 73 74 69 6e 61 74 69 6f |st IP de|stinatio|
|00002c30| 6e 20 61 73 20 72 65 71 | 75 69 72 65 64 20 66 6f |n as req|uired fo|
|00002c40| 72 20 49 50 20 73 6f 75 | 72 63 65 20 72 6f 75 74 |r IP sou|rce rout|
|00002c50| 69 6e 67 2c 0a 20 2a 20 | 61 73 20 69 6e 64 69 63 |ing,. * |as indic|
|00002c60| 61 74 65 64 20 62 79 20 | 61 20 6e 6f 6e 2d 7a 65 |ated by |a non-ze|
|00002c70| 72 6f 20 69 6e 5f 61 64 | 64 72 20 61 74 20 74 68 |ro in_ad|dr at th|
|00002c80| 65 20 73 74 61 72 74 20 | 6f 66 20 74 68 65 20 6f |e start |of the o|
|00002c90| 70 74 69 6f 6e 73 2e 0a | 20 2a 2f 0a 73 74 72 75 |ptions..| */.stru|
|00002ca0| 63 74 20 6d 62 75 66 20 | 2a 0a 69 70 5f 69 6e 73 |ct mbuf |*.ip_ins|
|00002cb0| 65 72 74 6f 70 74 69 6f | 6e 73 28 6d 2c 20 6f 70 |ertoptio|ns(m, op|
|00002cc0| 74 2c 20 70 68 6c 65 6e | 29 0a 09 72 65 67 69 73 |t, phlen|)..regis|
|00002cd0| 74 65 72 20 73 74 72 75 | 63 74 20 6d 62 75 66 20 |ter stru|ct mbuf |
|00002ce0| 2a 6d 3b 0a 09 73 74 72 | 75 63 74 20 6d 62 75 66 |*m;..str|uct mbuf|
|00002cf0| 20 2a 6f 70 74 3b 0a 09 | 69 6e 74 20 2a 70 68 6c | *opt;..|int *phl|
|00002d00| 65 6e 3b 0a 7b 0a 09 72 | 65 67 69 73 74 65 72 20 |en;.{..r|egister |
|00002d10| 73 74 72 75 63 74 20 69 | 70 6f 70 74 69 6f 6e 20 |struct i|poption |
|00002d20| 2a 70 20 3d 20 6d 74 6f | 64 28 6f 70 74 2c 20 73 |*p = mto|d(opt, s|
|00002d30| 74 72 75 63 74 20 69 70 | 6f 70 74 69 6f 6e 20 2a |truct ip|option *|
|00002d40| 29 3b 0a 09 73 74 72 75 | 63 74 20 6d 62 75 66 20 |);..stru|ct mbuf |
|00002d50| 2a 6e 3b 0a 09 72 65 67 | 69 73 74 65 72 20 73 74 |*n;..reg|ister st|
|00002d60| 72 75 63 74 20 69 70 20 | 2a 69 70 20 3d 20 6d 74 |ruct ip |*ip = mt|
|00002d70| 6f 64 28 6d 2c 20 73 74 | 72 75 63 74 20 69 70 20 |od(m, st|ruct ip |
|00002d80| 2a 29 3b 0a 09 75 6e 73 | 69 67 6e 65 64 20 6f 70 |*);..uns|igned op|
|00002d90| 74 6c 65 6e 3b 0a 0a 09 | 6f 70 74 6c 65 6e 20 3d |tlen;...|optlen =|
|00002da0| 20 6f 70 74 2d 3e 6d 5f | 6c 65 6e 20 2d 20 73 69 | opt->m_|len - si|
|00002db0| 7a 65 6f 66 28 70 2d 3e | 69 70 6f 70 74 5f 64 73 |zeof(p->|ipopt_ds|
|00002dc0| 74 29 3b 0a 09 69 66 20 | 28 70 2d 3e 69 70 6f 70 |t);..if |(p->ipop|
|00002dd0| 74 5f 64 73 74 2e 73 5f | 61 64 64 72 29 0a 09 09 |t_dst.s_|addr)...|
|00002de0| 69 70 2d 3e 69 70 5f 64 | 73 74 20 3d 20 70 2d 3e |ip->ip_d|st = p->|
|00002df0| 69 70 6f 70 74 5f 64 73 | 74 3b 0a 09 69 66 20 28 |ipopt_ds|t;..if (|
|00002e00| 6d 2d 3e 6d 5f 6f 66 66 | 20 3e 3d 20 4d 4d 41 58 |m->m_off| >= MMAX|
|00002e10| 4f 46 46 20 7c 7c 20 4d | 4d 49 4e 4f 46 46 20 2b |OFF || M|MINOFF +|
|00002e20| 20 6f 70 74 6c 65 6e 20 | 3e 20 6d 2d 3e 6d 5f 6f | optlen |> m->m_o|
|00002e30| 66 66 29 20 7b 0a 09 09 | 4d 47 45 54 28 6e 2c 20 |ff) {...|MGET(n, |
|00002e40| 4d 5f 44 4f 4e 54 57 41 | 49 54 2c 20 4d 54 5f 48 |M_DONTWA|IT, MT_H|
|00002e50| 45 41 44 45 52 29 3b 0a | 09 09 69 66 20 28 6e 20 |EADER);.|..if (n |
|00002e60| 3d 3d 20 30 29 0a 09 09 | 09 72 65 74 75 72 6e 20 |== 0)...|.return |
|00002e70| 28 6d 29 3b 0a 09 09 6d | 2d 3e 6d 5f 6c 65 6e 20 |(m);...m|->m_len |
|00002e80| 2d 3d 20 73 69 7a 65 6f | 66 28 73 74 72 75 63 74 |-= sizeo|f(struct|
|00002e90| 20 69 70 29 3b 0a 09 09 | 6d 2d 3e 6d 5f 6f 66 66 | ip);...|m->m_off|
|00002ea0| 20 2b 3d 20 73 69 7a 65 | 6f 66 28 73 74 72 75 63 | += size|of(struc|
|00002eb0| 74 20 69 70 29 3b 0a 09 | 09 6e 2d 3e 6d 5f 6e 65 |t ip);..|.n->m_ne|
|00002ec0| 78 74 20 3d 20 6d 3b 0a | 09 09 6d 20 3d 20 6e 3b |xt = m;.|..m = n;|
|00002ed0| 0a 09 09 6d 2d 3e 6d 5f | 6f 66 66 20 3d 20 4d 4d |...m->m_|off = MM|
|00002ee0| 41 58 4f 46 46 20 2d 20 | 73 69 7a 65 6f 66 28 73 |AXOFF - |sizeof(s|
|00002ef0| 74 72 75 63 74 20 69 70 | 29 20 2d 20 6f 70 74 6c |truct ip|) - optl|
|00002f00| 65 6e 3b 0a 09 09 6d 2d | 3e 6d 5f 6c 65 6e 20 3d |en;...m-|>m_len =|
|00002f10| 20 6f 70 74 6c 65 6e 20 | 2b 20 73 69 7a 65 6f 66 | optlen |+ sizeof|
|00002f20| 28 73 74 72 75 63 74 20 | 69 70 29 3b 0a 09 09 62 |(struct |ip);...b|
|00002f30| 63 6f 70 79 28 28 63 61 | 64 64 72 5f 74 29 69 70 |copy((ca|ddr_t)ip|
|00002f40| 2c 20 6d 74 6f 64 28 6d | 2c 20 63 61 64 64 72 5f |, mtod(m|, caddr_|
|00002f50| 74 29 2c 20 73 69 7a 65 | 6f 66 28 73 74 72 75 63 |t), size|of(struc|
|00002f60| 74 20 69 70 29 29 3b 0a | 09 7d 20 65 6c 73 65 20 |t ip));.|.} else |
|00002f70| 7b 0a 09 09 6d 2d 3e 6d | 5f 6f 66 66 20 2d 3d 20 |{...m->m|_off -= |
|00002f80| 6f 70 74 6c 65 6e 3b 0a | 09 09 6d 2d 3e 6d 5f 6c |optlen;.|..m->m_l|
|00002f90| 65 6e 20 2b 3d 20 6f 70 | 74 6c 65 6e 3b 0a 09 09 |en += op|tlen;...|
|00002fa0| 6f 76 62 63 6f 70 79 28 | 28 63 61 64 64 72 5f 74 |ovbcopy(|(caddr_t|
|00002fb0| 29 69 70 2c 20 6d 74 6f | 64 28 6d 2c 20 63 61 64 |)ip, mto|d(m, cad|
|00002fc0| 64 72 5f 74 29 2c 20 73 | 69 7a 65 6f 66 28 73 74 |dr_t), s|izeof(st|
|00002fd0| 72 75 63 74 20 69 70 29 | 29 3b 0a 09 7d 0a 09 69 |ruct ip)|);..}..i|
|00002fe0| 70 20 3d 20 6d 74 6f 64 | 28 6d 2c 20 73 74 72 75 |p = mtod|(m, stru|
|00002ff0| 63 74 20 69 70 20 2a 29 | 3b 0a 09 62 63 6f 70 79 |ct ip *)|;..bcopy|
|00003000| 28 28 63 61 64 64 72 5f | 74 29 70 2d 3e 69 70 6f |((caddr_|t)p->ipo|
|00003010| 70 74 5f 6c 69 73 74 2c | 20 28 63 61 64 64 72 5f |pt_list,| (caddr_|
|00003020| 74 29 28 69 70 20 2b 20 | 31 29 2c 20 28 75 6e 73 |t)(ip + |1), (uns|
|00003030| 69 67 6e 65 64 29 6f 70 | 74 6c 65 6e 29 3b 0a 09 |igned)op|tlen);..|
|00003040| 2a 70 68 6c 65 6e 20 3d | 20 73 69 7a 65 6f 66 28 |*phlen =| sizeof(|
|00003050| 73 74 72 75 63 74 20 69 | 70 29 20 2b 20 6f 70 74 |struct i|p) + opt|
|00003060| 6c 65 6e 3b 0a 09 69 70 | 2d 3e 69 70 5f 6c 65 6e |len;..ip|->ip_len|
|00003070| 20 2b 3d 20 6f 70 74 6c | 65 6e 3b 0a 09 72 65 74 | += optl|en;..ret|
|00003080| 75 72 6e 20 28 6d 29 3b | 0a 7d 0a 0a 2f 2a 0a 20 |urn (m);|.}../*. |
|00003090| 2a 20 43 6f 70 79 20 6f | 70 74 69 6f 6e 73 20 66 |* Copy o|ptions f|
|000030a0| 72 6f 6d 20 69 70 20 74 | 6f 20 6a 70 2c 0a 20 2a |rom ip t|o jp,. *|
|000030b0| 20 6f 6d 69 74 74 69 6e | 67 20 74 68 6f 73 65 20 | omittin|g those |
|000030c0| 6e 6f 74 20 63 6f 70 69 | 65 64 20 64 75 72 69 6e |not copi|ed durin|
|000030d0| 67 20 66 72 61 67 6d 65 | 6e 74 61 74 69 6f 6e 2e |g fragme|ntation.|
|000030e0| 0a 20 2a 2f 0a 69 70 5f | 6f 70 74 63 6f 70 79 28 |. */.ip_|optcopy(|
|000030f0| 69 70 2c 20 6a 70 29 0a | 09 73 74 72 75 63 74 20 |ip, jp).|.struct |
|00003100| 69 70 20 2a 69 70 2c 20 | 2a 6a 70 3b 0a 7b 0a 09 |ip *ip, |*jp;.{..|
|00003110| 72 65 67 69 73 74 65 72 | 20 75 5f 63 68 61 72 20 |register| u_char |
|00003120| 2a 63 70 2c 20 2a 64 70 | 3b 0a 09 69 6e 74 20 6f |*cp, *dp|;..int o|
|00003130| 70 74 2c 20 6f 70 74 6c | 65 6e 2c 20 63 6e 74 3b |pt, optl|en, cnt;|
|00003140| 0a 0a 09 63 70 20 3d 20 | 28 75 5f 63 68 61 72 20 |...cp = |(u_char |
|00003150| 2a 29 28 69 70 20 2b 20 | 31 29 3b 0a 09 64 70 20 |*)(ip + |1);..dp |
|00003160| 3d 20 28 75 5f 63 68 61 | 72 20 2a 29 28 6a 70 20 |= (u_cha|r *)(jp |
|00003170| 2b 20 31 29 3b 0a 09 63 | 6e 74 20 3d 20 28 69 70 |+ 1);..c|nt = (ip|
|00003180| 2d 3e 69 70 5f 68 6c 20 | 3c 3c 20 32 29 20 2d 20 |->ip_hl |<< 2) - |
|00003190| 73 69 7a 65 6f 66 20 28 | 73 74 72 75 63 74 20 69 |sizeof (|struct i|
|000031a0| 70 29 3b 0a 09 66 6f 72 | 20 28 3b 20 63 6e 74 20 |p);..for| (; cnt |
|000031b0| 3e 20 30 3b 20 63 6e 74 | 20 2d 3d 20 6f 70 74 6c |> 0; cnt| -= optl|
|000031c0| 65 6e 2c 20 63 70 20 2b | 3d 20 6f 70 74 6c 65 6e |en, cp +|= optlen|
|000031d0| 29 20 7b 0a 09 09 6f 70 | 74 20 3d 20 63 70 5b 30 |) {...op|t = cp[0|
|000031e0| 5d 3b 0a 09 09 69 66 20 | 28 6f 70 74 20 3d 3d 20 |];...if |(opt == |
|000031f0| 49 50 4f 50 54 5f 45 4f | 4c 29 0a 09 09 09 62 72 |IPOPT_EO|L)....br|
|00003200| 65 61 6b 3b 0a 09 09 69 | 66 20 28 6f 70 74 20 3d |eak;...i|f (opt =|
|00003210| 3d 20 49 50 4f 50 54 5f | 4e 4f 50 29 0a 09 09 09 |= IPOPT_|NOP)....|
|00003220| 6f 70 74 6c 65 6e 20 3d | 20 31 3b 0a 09 09 65 6c |optlen =| 1;...el|
|00003230| 73 65 0a 09 09 09 6f 70 | 74 6c 65 6e 20 3d 20 63 |se....op|tlen = c|
|00003240| 70 5b 49 50 4f 50 54 5f | 4f 4c 45 4e 5d 3b 0a 09 |p[IPOPT_|OLEN];..|
|00003250| 09 2f 2a 20 62 6f 67 75 | 73 20 6c 65 6e 67 74 68 |./* bogu|s length|
|00003260| 73 20 73 68 6f 75 6c 64 | 20 68 61 76 65 20 62 65 |s should| have be|
|00003270| 65 6e 20 63 61 75 67 68 | 74 20 62 79 20 69 70 5f |en caugh|t by ip_|
|00003280| 64 6f 6f 70 74 69 6f 6e | 73 20 2a 2f 0a 09 09 69 |dooption|s */...i|
|00003290| 66 20 28 6f 70 74 6c 65 | 6e 20 3e 20 63 6e 74 29 |f (optle|n > cnt)|
|000032a0| 0a 09 09 09 6f 70 74 6c | 65 6e 20 3d 20 63 6e 74 |....optl|en = cnt|
|000032b0| 3b 0a 09 09 69 66 20 28 | 49 50 4f 50 54 5f 43 4f |;...if (|IPOPT_CO|
|000032c0| 50 49 45 44 28 6f 70 74 | 29 29 20 7b 0a 09 09 09 |PIED(opt|)) {....|
|000032d0| 62 63 6f 70 79 28 28 63 | 61 64 64 72 5f 74 29 63 |bcopy((c|addr_t)c|
|000032e0| 70 2c 20 28 63 61 64 64 | 72 5f 74 29 64 70 2c 20 |p, (cadd|r_t)dp, |
|000032f0| 28 75 6e 73 69 67 6e 65 | 64 29 6f 70 74 6c 65 6e |(unsigne|d)optlen|
|00003300| 29 3b 0a 09 09 09 64 70 | 20 2b 3d 20 6f 70 74 6c |);....dp| += optl|
|00003310| 65 6e 3b 0a 09 09 7d 0a | 09 7d 0a 09 66 6f 72 20 |en;...}.|.}..for |
|00003320| 28 6f 70 74 6c 65 6e 20 | 3d 20 64 70 20 2d 20 28 |(optlen |= dp - (|
|00003330| 75 5f 63 68 61 72 20 2a | 29 28 6a 70 2b 31 29 3b |u_char *|)(jp+1);|
|00003340| 20 6f 70 74 6c 65 6e 20 | 26 20 30 78 33 3b 20 6f | optlen |& 0x3; o|
|00003350| 70 74 6c 65 6e 2b 2b 29 | 0a 09 09 2a 64 70 2b 2b |ptlen++)|...*dp++|
|00003360| 20 3d 20 49 50 4f 50 54 | 5f 45 4f 4c 3b 0a 09 72 | = IPOPT|_EOL;..r|
|00003370| 65 74 75 72 6e 20 28 6f | 70 74 6c 65 6e 29 3b 0a |eturn (o|ptlen);.|
|00003380| 7d 0a 0a 2f 2a 0a 20 2a | 20 49 50 20 73 6f 63 6b |}../*. *| IP sock|
|00003390| 65 74 20 6f 70 74 69 6f | 6e 20 70 72 6f 63 65 73 |et optio|n proces|
|000033a0| 73 69 6e 67 2e 0a 20 2a | 2f 0a 69 70 5f 63 74 6c |sing.. *|/.ip_ctl|
|000033b0| 6f 75 74 70 75 74 28 6f | 70 2c 20 73 6f 2c 20 6c |output(o|p, so, l|
|000033c0| 65 76 65 6c 2c 20 6f 70 | 74 6e 61 6d 65 2c 20 6d |evel, op|tname, m|
|000033d0| 29 0a 09 69 6e 74 20 6f | 70 3b 0a 09 73 74 72 75 |)..int o|p;..stru|
|000033e0| 63 74 20 73 6f 63 6b 65 | 74 20 2a 73 6f 3b 0a 09 |ct socke|t *so;..|
|000033f0| 69 6e 74 20 6c 65 76 65 | 6c 2c 20 6f 70 74 6e 61 |int leve|l, optna|
|00003400| 6d 65 3b 0a 09 73 74 72 | 75 63 74 20 6d 62 75 66 |me;..str|uct mbuf|
|00003410| 20 2a 2a 6d 3b 0a 7b 0a | 09 69 6e 74 20 65 72 72 | **m;.{.|.int err|
|00003420| 6f 72 20 3d 20 30 3b 0a | 09 73 74 72 75 63 74 20 |or = 0;.|.struct |
|00003430| 69 6e 70 63 62 20 2a 69 | 6e 70 20 3d 20 73 6f 74 |inpcb *i|np = sot|
|00003440| 6f 69 6e 70 63 62 28 73 | 6f 29 3b 0a 0a 09 69 66 |oinpcb(s|o);...if|
|00003450| 20 28 6c 65 76 65 6c 20 | 21 3d 20 49 50 50 52 4f | (level |!= IPPRO|
|00003460| 54 4f 5f 49 50 29 0a 09 | 09 65 72 72 6f 72 20 3d |TO_IP)..|.error =|
|00003470| 20 45 49 4e 56 41 4c 3b | 0a 09 65 6c 73 65 20 73 | EINVAL;|..else s|
|00003480| 77 69 74 63 68 20 28 6f | 70 29 20 7b 0a 0a 09 63 |witch (o|p) {...c|
|00003490| 61 73 65 20 50 52 43 4f | 5f 53 45 54 4f 50 54 3a |ase PRCO|_SETOPT:|
|000034a0| 0a 09 09 73 77 69 74 63 | 68 20 28 6f 70 74 6e 61 |...switc|h (optna|
|000034b0| 6d 65 29 20 7b 0a 09 09 | 63 61 73 65 20 49 50 5f |me) {...|case IP_|
|000034c0| 4f 50 54 49 4f 4e 53 3a | 0a 09 09 09 72 65 74 75 |OPTIONS:|....retu|
|000034d0| 72 6e 20 28 69 70 5f 70 | 63 62 6f 70 74 73 28 26 |rn (ip_p|cbopts(&|
|000034e0| 69 6e 70 2d 3e 69 6e 70 | 5f 6f 70 74 69 6f 6e 73 |inp->inp|_options|
|000034f0| 2c 20 2a 6d 29 29 3b 0a | 0a 23 69 66 64 65 66 20 |, *m));.|.#ifdef |
|00003500| 4d 55 4c 54 49 43 41 53 | 54 0a 09 09 63 61 73 65 |MULTICAS|T...case|
|00003510| 20 49 50 5f 4d 55 4c 54 | 49 43 41 53 54 5f 49 46 | IP_MULT|ICAST_IF|
|00003520| 3a 0a 09 09 63 61 73 65 | 20 49 50 5f 4d 55 4c 54 |:...case| IP_MULT|
|00003530| 49 43 41 53 54 5f 54 54 | 4c 3a 0a 09 09 63 61 73 |ICAST_TT|L:...cas|
|00003540| 65 20 49 50 5f 4d 55 4c | 54 49 43 41 53 54 5f 4c |e IP_MUL|TICAST_L|
|00003550| 4f 4f 50 3a 0a 09 09 63 | 61 73 65 20 49 50 5f 41 |OOP:...c|ase IP_A|
|00003560| 44 44 5f 4d 45 4d 42 45 | 52 53 48 49 50 3a 0a 09 |DD_MEMBE|RSHIP:..|
|00003570| 09 63 61 73 65 20 49 50 | 5f 44 52 4f 50 5f 4d 45 |.case IP|_DROP_ME|
|00003580| 4d 42 45 52 53 48 49 50 | 3a 0a 09 09 09 65 72 72 |MBERSHIP|:....err|
|00003590| 6f 72 20 3d 20 69 70 5f | 73 65 74 6d 6f 70 74 69 |or = ip_|setmopti|
|000035a0| 6f 6e 73 28 6f 70 74 6e | 61 6d 65 2c 20 26 69 6e |ons(optn|ame, &in|
|000035b0| 70 2d 3e 69 6e 70 5f 6d | 6f 70 74 69 6f 6e 73 2c |p->inp_m|options,|
|000035c0| 20 2a 6d 29 3b 0a 09 09 | 09 62 72 65 61 6b 3b 0a | *m);...|.break;.|
|000035d0| 23 65 6e 64 69 66 20 4d | 55 4c 54 49 43 41 53 54 |#endif M|ULTICAST|
|000035e0| 0a 09 09 64 65 66 61 75 | 6c 74 3a 0a 09 09 09 65 |...defau|lt:....e|
|000035f0| 72 72 6f 72 20 3d 20 45 | 49 4e 56 41 4c 3b 0a 09 |rror = E|INVAL;..|
|00003600| 09 09 62 72 65 61 6b 3b | 0a 09 09 7d 0a 09 09 62 |..break;|...}...b|
|00003610| 72 65 61 6b 3b 0a 0a 09 | 63 61 73 65 20 50 52 43 |reak;...|case PRC|
|00003620| 4f 5f 47 45 54 4f 50 54 | 3a 0a 09 09 73 77 69 74 |O_GETOPT|:...swit|
|00003630| 63 68 20 28 6f 70 74 6e | 61 6d 65 29 20 7b 0a 09 |ch (optn|ame) {..|
|00003640| 09 63 61 73 65 20 49 50 | 5f 4f 50 54 49 4f 4e 53 |.case IP|_OPTIONS|
|00003650| 3a 0a 09 09 09 2a 6d 20 | 3d 20 6d 5f 67 65 74 28 |:....*m |= m_get(|
|00003660| 4d 5f 57 41 49 54 2c 20 | 4d 54 5f 53 4f 4f 50 54 |M_WAIT, |MT_SOOPT|
|00003670| 53 29 3b 0a 09 09 09 69 | 66 20 28 69 6e 70 2d 3e |S);....i|f (inp->|
|00003680| 69 6e 70 5f 6f 70 74 69 | 6f 6e 73 29 20 7b 0a 09 |inp_opti|ons) {..|
|00003690| 09 09 09 28 2a 6d 29 2d | 3e 6d 5f 6f 66 66 20 3d |...(*m)-|>m_off =|
|000036a0| 20 69 6e 70 2d 3e 69 6e | 70 5f 6f 70 74 69 6f 6e | inp->in|p_option|
|000036b0| 73 2d 3e 6d 5f 6f 66 66 | 3b 0a 09 09 09 09 28 2a |s->m_off|;.....(*|
|000036c0| 6d 29 2d 3e 6d 5f 6c 65 | 6e 20 3d 20 69 6e 70 2d |m)->m_le|n = inp-|
|000036d0| 3e 69 6e 70 5f 6f 70 74 | 69 6f 6e 73 2d 3e 6d 5f |>inp_opt|ions->m_|
|000036e0| 6c 65 6e 3b 0a 09 09 09 | 09 62 63 6f 70 79 28 6d |len;....|.bcopy(m|
|000036f0| 74 6f 64 28 69 6e 70 2d | 3e 69 6e 70 5f 6f 70 74 |tod(inp-|>inp_opt|
|00003700| 69 6f 6e 73 2c 20 63 61 | 64 64 72 5f 74 29 2c 0a |ions, ca|ddr_t),.|
|00003710| 09 09 09 09 20 20 20 20 | 6d 74 6f 64 28 2a 6d 2c |....    |mtod(*m,|
|00003720| 20 63 61 64 64 72 5f 74 | 29 2c 20 28 75 6e 73 69 | caddr_t|), (unsi|
|00003730| 67 6e 65 64 29 28 2a 6d | 29 2d 3e 6d 5f 6c 65 6e |gned)(*m|)->m_len|
|00003740| 29 3b 0a 09 09 09 7d 20 | 65 6c 73 65 0a 09 09 09 |);....} |else....|
|00003750| 09 28 2a 6d 29 2d 3e 6d | 5f 6c 65 6e 20 3d 20 30 |.(*m)->m|_len = 0|
|00003760| 3b 0a 09 09 09 62 72 65 | 61 6b 3b 0a 23 69 66 64 |;....bre|ak;.#ifd|
|00003770| 65 66 20 4d 55 4c 54 49 | 43 41 53 54 0a 09 09 63 |ef MULTI|CAST...c|
|00003780| 61 73 65 20 49 50 5f 4d | 55 4c 54 49 43 41 53 54 |ase IP_M|ULTICAST|
|00003790| 5f 49 46 3a 0a 09 09 63 | 61 73 65 20 49 50 5f 4d |_IF:...c|ase IP_M|
|000037a0| 55 4c 54 49 43 41 53 54 | 5f 54 54 4c 3a 0a 09 09 |ULTICAST|_TTL:...|
|000037b0| 63 61 73 65 20 49 50 5f | 4d 55 4c 54 49 43 41 53 |case IP_|MULTICAS|
|000037c0| 54 5f 4c 4f 4f 50 3a 0a | 09 09 63 61 73 65 20 49 |T_LOOP:.|..case I|
|000037d0| 50 5f 41 44 44 5f 4d 45 | 4d 42 45 52 53 48 49 50 |P_ADD_ME|MBERSHIP|
|000037e0| 3a 0a 09 09 63 61 73 65 | 20 49 50 5f 44 52 4f 50 |:...case| IP_DROP|
|000037f0| 5f 4d 45 4d 42 45 52 53 | 48 49 50 3a 0a 09 09 09 |_MEMBERS|HIP:....|
|00003800| 65 72 72 6f 72 20 3d 20 | 69 70 5f 67 65 74 6d 6f |error = |ip_getmo|
|00003810| 70 74 69 6f 6e 73 28 6f | 70 74 6e 61 6d 65 2c 20 |ptions(o|ptname, |
|00003820| 69 6e 70 2d 3e 69 6e 70 | 5f 6d 6f 70 74 69 6f 6e |inp->inp|_moption|
|00003830| 73 2c 20 6d 29 3b 0a 09 | 09 09 62 72 65 61 6b 3b |s, m);..|..break;|
|00003840| 0a 23 65 6e 64 69 66 20 | 4d 55 4c 54 49 43 41 53 |.#endif |MULTICAS|
|00003850| 54 0a 09 09 64 65 66 61 | 75 6c 74 3a 0a 09 09 09 |T...defa|ult:....|
|00003860| 65 72 72 6f 72 20 3d 20 | 45 49 4e 56 41 4c 3b 0a |error = |EINVAL;.|
|00003870| 09 09 09 62 72 65 61 6b | 3b 0a 09 09 7d 0a 09 09 |...break|;...}...|
|00003880| 62 72 65 61 6b 3b 0a 09 | 7d 0a 09 69 66 20 28 6f |break;..|}..if (o|
|00003890| 70 20 3d 3d 20 50 52 43 | 4f 5f 53 45 54 4f 50 54 |p == PRC|O_SETOPT|
|000038a0| 20 26 26 20 2a 6d 29 0a | 09 09 28 76 6f 69 64 29 | && *m).|..(void)|
|000038b0| 6d 5f 66 72 65 65 28 2a | 6d 29 3b 0a 09 72 65 74 |m_free(*|m);..ret|
|000038c0| 75 72 6e 20 28 65 72 72 | 6f 72 29 3b 0a 7d 0a 0a |urn (err|or);.}..|
|000038d0| 2f 2a 0a 20 2a 20 53 65 | 74 20 75 70 20 49 50 20 |/*. * Se|t up IP |
|000038e0| 6f 70 74 69 6f 6e 73 20 | 69 6e 20 70 63 62 20 66 |options |in pcb f|
|000038f0| 6f 72 20 69 6e 73 65 72 | 74 69 6f 6e 20 69 6e 20 |or inser|tion in |
|00003900| 6f 75 74 70 75 74 20 70 | 61 63 6b 65 74 73 2e 0a |output p|ackets..|
|00003910| 20 2a 20 53 74 6f 72 65 | 20 69 6e 20 6d 62 75 66 | * Store| in mbuf|
|00003920| 20 77 69 74 68 20 70 6f | 69 6e 74 65 72 20 69 6e | with po|inter in|
|00003930| 20 70 63 62 6f 70 74 2c | 20 61 64 64 69 6e 67 20 | pcbopt,| adding |
|00003940| 70 73 65 75 64 6f 2d 6f | 70 74 69 6f 6e 0a 20 2a |pseudo-o|ption. *|
|00003950| 20 77 69 74 68 20 64 65 | 73 74 69 6e 61 74 69 6f | with de|stinatio|
|00003960| 6e 20 61 64 64 72 65 73 | 73 20 69 66 20 73 6f 75 |n addres|s if sou|
|00003970| 72 63 65 20 72 6f 75 74 | 65 64 2e 0a 20 2a 2f 0a |rce rout|ed.. */.|
|00003980| 69 70 5f 70 63 62 6f 70 | 74 73 28 70 63 62 6f 70 |ip_pcbop|ts(pcbop|
|00003990| 74 2c 20 6d 29 0a 09 73 | 74 72 75 63 74 20 6d 62 |t, m)..s|truct mb|
|000039a0| 75 66 20 2a 2a 70 63 62 | 6f 70 74 3b 0a 09 72 65 |uf **pcb|opt;..re|
|000039b0| 67 69 73 74 65 72 20 73 | 74 72 75 63 74 20 6d 62 |gister s|truct mb|
|000039c0| 75 66 20 2a 6d 3b 0a 7b | 0a 09 72 65 67 69 73 74 |uf *m;.{|..regist|
|000039d0| 65 72 20 63 6e 74 2c 20 | 6f 70 74 6c 65 6e 3b 0a |er cnt, |optlen;.|
|000039e0| 09 72 65 67 69 73 74 65 | 72 20 75 5f 63 68 61 72 |.registe|r u_char|
|000039f0| 20 2a 63 70 3b 0a 09 75 | 5f 63 68 61 72 20 6f 70 | *cp;..u|_char op|
|00003a00| 74 3b 0a 0a 09 2f 2a 20 | 74 75 72 6e 20 6f 66 66 |t;.../* |turn off|
|00003a10| 20 61 6e 79 20 6f 6c 64 | 20 6f 70 74 69 6f 6e 73 | any old| options|
|00003a20| 20 2a 2f 0a 09 69 66 20 | 28 2a 70 63 62 6f 70 74 | */..if |(*pcbopt|
|00003a30| 29 0a 09 09 28 76 6f 69 | 64 29 6d 5f 66 72 65 65 |)...(voi|d)m_free|
|00003a40| 28 2a 70 63 62 6f 70 74 | 29 3b 0a 09 2a 70 63 62 |(*pcbopt|);..*pcb|
|00003a50| 6f 70 74 20 3d 20 30 3b | 0a 09 69 66 20 28 6d 20 |opt = 0;|..if (m |
|00003a60| 3d 3d 20 28 73 74 72 75 | 63 74 20 6d 62 75 66 20 |== (stru|ct mbuf |
|00003a70| 2a 29 30 20 7c 7c 20 6d | 2d 3e 6d 5f 6c 65 6e 20 |*)0 || m|->m_len |
|00003a80| 3d 3d 20 30 29 20 7b 0a | 09 09 2f 2a 0a 09 09 20 |== 0) {.|../*... |
|00003a90| 2a 20 4f 6e 6c 79 20 74 | 75 72 6e 69 6e 67 20 6f |* Only t|urning o|
|00003aa0| 66 66 20 61 6e 79 20 70 | 72 65 76 69 6f 75 73 20 |ff any p|revious |
|00003ab0| 6f 70 74 69 6f 6e 73 2e | 0a 09 09 20 2a 2f 0a 09 |options.|... */..|
|00003ac0| 09 69 66 20 28 6d 29 0a | 09 09 09 28 76 6f 69 64 |.if (m).|...(void|
|00003ad0| 29 6d 5f 66 72 65 65 28 | 6d 29 3b 0a 09 09 72 65 |)m_free(|m);...re|
|00003ae0| 74 75 72 6e 20 28 30 29 | 3b 0a 09 7d 0a 0a 23 69 |turn (0)|;..}..#i|
|00003af0| 66 6e 64 65 66 09 76 61 | 78 0a 09 69 66 20 28 6d |fndef.va|x..if (m|
|00003b00| 2d 3e 6d 5f 6c 65 6e 20 | 25 20 73 69 7a 65 6f 66 |->m_len |% sizeof|
|00003b10| 28 6c 6f 6e 67 29 29 0a | 09 09 67 6f 74 6f 20 62 |(long)).|..goto b|
|00003b20| 61 64 3b 0a 23 65 6e 64 | 69 66 0a 09 2f 2a 0a 09 |ad;.#end|if../*..|
|00003b30| 20 2a 20 49 50 20 66 69 | 72 73 74 2d 68 6f 70 20 | * IP fi|rst-hop |
|00003b40| 64 65 73 74 69 6e 61 74 | 69 6f 6e 20 61 64 64 72 |destinat|ion addr|
|00003b50| 65 73 73 20 77 69 6c 6c | 20 62 65 20 73 74 6f 72 |ess will| be stor|
|00003b60| 65 64 20 62 65 66 6f 72 | 65 0a 09 20 2a 20 61 63 |ed befor|e.. * ac|
|00003b70| 74 75 61 6c 20 6f 70 74 | 69 6f 6e 73 3b 20 6d 6f |tual opt|ions; mo|
|00003b80| 76 65 20 6f 74 68 65 72 | 20 6f 70 74 69 6f 6e 73 |ve other| options|
|00003b90| 20 62 61 63 6b 0a 09 20 | 2a 20 61 6e 64 20 63 6c | back.. |* and cl|
|00003ba0| 65 61 72 20 69 74 20 77 | 68 65 6e 20 6e 6f 6e 65 |ear it w|hen none|
|00003bb0| 20 70 72 65 73 65 6e 74 | 2e 0a 09 20 2a 2f 0a 23 | present|... */.#|
|00003bc0| 69 66 09 4d 41 58 5f 49 | 50 4f 50 54 4c 45 4e 20 |if.MAX_I|POPTLEN |
|00003bd0| 3e 3d 20 4d 4d 41 58 4f | 46 46 20 2d 20 4d 4d 49 |>= MMAXO|FF - MMI|
|00003be0| 4e 4f 46 46 0a 09 69 66 | 20 28 6d 2d 3e 6d 5f 6f |NOFF..if| (m->m_o|
|00003bf0| 66 66 20 2b 20 6d 2d 3e | 6d 5f 6c 65 6e 20 2b 20 |ff + m->|m_len + |
|00003c00| 73 69 7a 65 6f 66 28 73 | 74 72 75 63 74 20 69 6e |sizeof(s|truct in|
|00003c10| 5f 61 64 64 72 29 20 3e | 20 4d 41 58 5f 49 50 4f |_addr) >| MAX_IPO|
|00003c20| 50 54 4c 45 4e 29 0a 09 | 09 67 6f 74 6f 20 62 61 |PTLEN)..|.goto ba|
|00003c30| 64 3b 0a 23 65 6c 73 65 | 0a 09 69 66 20 28 6d 2d |d;.#else|..if (m-|
|00003c40| 3e 6d 5f 6f 66 66 20 2b | 20 6d 2d 3e 6d 5f 6c 65 |>m_off +| m->m_le|
|00003c50| 6e 20 2b 20 73 69 7a 65 | 6f 66 28 73 74 72 75 63 |n + size|of(struc|
|00003c60| 74 20 69 6e 5f 61 64 64 | 72 29 20 3e 20 4d 4d 41 |t in_add|r) > MMA|
|00003c70| 58 4f 46 46 29 0a 09 09 | 67 6f 74 6f 20 62 61 64 |XOFF)...|goto bad|
|00003c80| 3b 0a 23 65 6e 64 69 66 | 0a 09 63 6e 74 20 3d 20 |;.#endif|..cnt = |
|00003c90| 6d 2d 3e 6d 5f 6c 65 6e | 3b 0a 09 6d 2d 3e 6d 5f |m->m_len|;..m->m_|
|00003ca0| 6c 65 6e 20 2b 3d 20 73 | 69 7a 65 6f 66 28 73 74 |len += s|izeof(st|
|00003cb0| 72 75 63 74 20 69 6e 5f | 61 64 64 72 29 3b 0a 09 |ruct in_|addr);..|
|00003cc0| 63 70 20 3d 20 6d 74 6f | 64 28 6d 2c 20 75 5f 63 |cp = mto|d(m, u_c|
|00003cd0| 68 61 72 20 2a 29 20 2b | 20 73 69 7a 65 6f 66 28 |har *) +| sizeof(|
|00003ce0| 73 74 72 75 63 74 20 69 | 6e 5f 61 64 64 72 29 3b |struct i|n_addr);|
|00003cf0| 0a 09 6f 76 62 63 6f 70 | 79 28 6d 74 6f 64 28 6d |..ovbcop|y(mtod(m|
|00003d00| 2c 20 63 61 64 64 72 5f | 74 29 2c 20 28 63 61 64 |, caddr_|t), (cad|
|00003d10| 64 72 5f 74 29 63 70 2c | 20 28 75 6e 73 69 67 6e |dr_t)cp,| (unsign|
|00003d20| 65 64 29 63 6e 74 29 3b | 0a 09 62 7a 65 72 6f 28 |ed)cnt);|..bzero(|
|00003d30| 6d 74 6f 64 28 6d 2c 20 | 63 61 64 64 72 5f 74 29 |mtod(m, |caddr_t)|
|00003d40| 2c 20 73 69 7a 65 6f 66 | 28 73 74 72 75 63 74 20 |, sizeof|(struct |
|00003d50| 69 6e 5f 61 64 64 72 29 | 29 3b 0a 0a 09 66 6f 72 |in_addr)|);...for|
|00003d60| 20 28 3b 20 63 6e 74 20 | 3e 20 30 3b 20 63 6e 74 | (; cnt |> 0; cnt|
|00003d70| 20 2d 3d 20 6f 70 74 6c | 65 6e 2c 20 63 70 20 2b | -= optl|en, cp +|
|00003d80| 3d 20 6f 70 74 6c 65 6e | 29 20 7b 0a 09 09 6f 70 |= optlen|) {...op|
|00003d90| 74 20 3d 20 63 70 5b 49 | 50 4f 50 54 5f 4f 50 54 |t = cp[I|POPT_OPT|
|00003da0| 56 41 4c 5d 3b 0a 09 09 | 69 66 20 28 6f 70 74 20 |VAL];...|if (opt |
|00003db0| 3d 3d 20 49 50 4f 50 54 | 5f 45 4f 4c 29 0a 09 09 |== IPOPT|_EOL)...|
|00003dc0| 09 62 72 65 61 6b 3b 0a | 09 09 69 66 20 28 6f 70 |.break;.|..if (op|
|00003dd0| 74 20 3d 3d 20 49 50 4f | 50 54 5f 4e 4f 50 29 0a |t == IPO|PT_NOP).|
|00003de0| 09 09 09 6f 70 74 6c 65 | 6e 20 3d 20 31 3b 0a 09 |...optle|n = 1;..|
|00003df0| 09 65 6c 73 65 20 7b 0a | 09 09 09 6f 70 74 6c 65 |.else {.|...optle|
|00003e00| 6e 20 3d 20 63 70 5b 49 | 50 4f 50 54 5f 4f 4c 45 |n = cp[I|POPT_OLE|
|00003e10| 4e 5d 3b 0a 09 09 09 69 | 66 20 28 6f 70 74 6c 65 |N];....i|f (optle|
|00003e20| 6e 20 3c 3d 20 49 50 4f | 50 54 5f 4f 4c 45 4e 20 |n <= IPO|PT_OLEN |
|00003e30| 7c 7c 20 6f 70 74 6c 65 | 6e 20 3e 20 63 6e 74 29 ||| optle|n > cnt)|
|00003e40| 0a 09 09 09 09 67 6f 74 | 6f 20 62 61 64 3b 0a 09 |.....got|o bad;..|
|00003e50| 09 7d 0a 09 09 73 77 69 | 74 63 68 20 28 6f 70 74 |.}...swi|tch (opt|
|00003e60| 29 20 7b 0a 0a 09 09 64 | 65 66 61 75 6c 74 3a 0a |) {....d|efault:.|
|00003e70| 09 09 09 62 72 65 61 6b | 3b 0a 0a 09 09 63 61 73 |...break|;....cas|
|00003e80| 65 20 49 50 4f 50 54 5f | 4c 53 52 52 3a 0a 09 09 |e IPOPT_|LSRR:...|
|00003e90| 63 61 73 65 20 49 50 4f | 50 54 5f 53 53 52 52 3a |case IPO|PT_SSRR:|
|00003ea0| 0a 09 09 09 2f 2a 0a 09 | 09 09 20 2a 20 75 73 65 |..../*..|.. * use|
|00003eb0| 72 20 70 72 6f 63 65 73 | 73 20 73 70 65 63 69 66 |r proces|s specif|
|00003ec0| 69 65 73 20 72 6f 75 74 | 65 20 61 73 3a 0a 09 09 |ies rout|e as:...|
|00003ed0| 09 20 2a 09 2d 3e 41 2d | 3e 42 2d 3e 43 2d 3e 44 |. *.->A-|>B->C->D|
|00003ee0| 0a 09 09 09 20 2a 20 44 | 20 6d 75 73 74 20 62 65 |.... * D| must be|
|00003ef0| 20 6f 75 72 20 66 69 6e | 61 6c 20 64 65 73 74 69 | our fin|al desti|
|00003f00| 6e 61 74 69 6f 6e 20 28 | 62 75 74 20 77 65 20 63 |nation (|but we c|
|00003f10| 61 6e 27 74 0a 09 09 09 | 20 2a 20 63 68 65 63 6b |an't....| * check|
|00003f20| 20 74 68 61 74 20 73 69 | 6e 63 65 20 77 65 20 6d | that si|nce we m|
|00003f30| 61 79 20 6e 6f 74 20 68 | 61 76 65 20 63 6f 6e 6e |ay not h|ave conn|
|00003f40| 65 63 74 65 64 20 79 65 | 74 29 2e 0a 09 09 09 20 |ected ye|t)..... |
|00003f50| 2a 20 41 20 69 73 20 66 | 69 72 73 74 20 68 6f 70 |* A is f|irst hop|
|00003f60| 20 64 65 73 74 69 6e 61 | 74 69 6f 6e 2c 20 77 68 | destina|tion, wh|
|00003f70| 69 63 68 20 64 6f 65 73 | 6e 27 74 20 61 70 70 65 |ich does|n't appe|
|00003f80| 61 72 20 69 6e 0a 09 09 | 09 20 2a 20 61 63 74 75 |ar in...|. * actu|
|00003f90| 61 6c 20 49 50 20 6f 70 | 74 69 6f 6e 2c 20 62 75 |al IP op|tion, bu|
|00003fa0| 74 20 69 73 20 73 74 6f | 72 65 64 20 62 65 66 6f |t is sto|red befo|
|00003fb0| 72 65 20 74 68 65 20 6f | 70 74 69 6f 6e 73 2e 0a |re the o|ptions..|
|00003fc0| 09 09 09 20 2a 2f 0a 09 | 09 09 69 66 20 28 6f 70 |... */..|..if (op|
|00003fd0| 74 6c 65 6e 20 3c 20 49 | 50 4f 50 54 5f 4d 49 4e |tlen < I|POPT_MIN|
|00003fe0| 4f 46 46 20 2d 20 31 20 | 2b 20 73 69 7a 65 6f 66 |OFF - 1 |+ sizeof|
|00003ff0| 28 73 74 72 75 63 74 20 | 69 6e 5f 61 64 64 72 29 |(struct |in_addr)|
|00004000| 29 0a 09 09 09 09 67 6f | 74 6f 20 62 61 64 3b 0a |).....go|to bad;.|
|00004010| 09 09 09 6d 2d 3e 6d 5f | 6c 65 6e 20 2d 3d 20 73 |...m->m_|len -= s|
|00004020| 69 7a 65 6f 66 28 73 74 | 72 75 63 74 20 69 6e 5f |izeof(st|ruct in_|
|00004030| 61 64 64 72 29 3b 0a 09 | 09 09 63 6e 74 20 2d 3d |addr);..|..cnt -=|
|00004040| 20 73 69 7a 65 6f 66 28 | 73 74 72 75 63 74 20 69 | sizeof(|struct i|
|00004050| 6e 5f 61 64 64 72 29 3b | 0a 09 09 09 6f 70 74 6c |n_addr);|....optl|
|00004060| 65 6e 20 2d 3d 20 73 69 | 7a 65 6f 66 28 73 74 72 |en -= si|zeof(str|
|00004070| 75 63 74 20 69 6e 5f 61 | 64 64 72 29 3b 0a 09 09 |uct in_a|ddr);...|
|00004080| 09 63 70 5b 49 50 4f 50 | 54 5f 4f 4c 45 4e 5d 20 |.cp[IPOP|T_OLEN] |
|00004090| 3d 20 6f 70 74 6c 65 6e | 3b 0a 09 09 09 2f 2a 0a |= optlen|;..../*.|
|000040a0| 09 09 09 20 2a 20 4d 6f | 76 65 20 66 69 72 73 74 |... * Mo|ve first|
|000040b0| 20 68 6f 70 20 62 65 66 | 6f 72 65 20 73 74 61 72 | hop bef|ore star|
|000040c0| 74 20 6f 66 20 6f 70 74 | 69 6f 6e 73 2e 0a 09 09 |t of opt|ions....|
|000040d0| 09 20 2a 2f 0a 09 09 09 | 62 63 6f 70 79 28 28 63 |. */....|bcopy((c|
|000040e0| 61 64 64 72 5f 74 29 26 | 63 70 5b 49 50 4f 50 54 |addr_t)&|cp[IPOPT|
|000040f0| 5f 4f 46 46 53 45 54 2b | 31 5d 2c 20 6d 74 6f 64 |_OFFSET+|1], mtod|
|00004100| 28 6d 2c 20 63 61 64 64 | 72 5f 74 29 2c 0a 09 09 |(m, cadd|r_t),...|
|00004110| 09 20 20 20 20 73 69 7a | 65 6f 66 28 73 74 72 75 |.    siz|eof(stru|
|00004120| 63 74 20 69 6e 5f 61 64 | 64 72 29 29 3b 0a 09 09 |ct in_ad|dr));...|
|00004130| 09 2f 2a 0a 09 09 09 20 | 2a 20 54 68 65 6e 20 63 |./*.... |* Then c|
|00004140| 6f 70 79 20 72 65 73 74 | 20 6f 66 20 6f 70 74 69 |opy rest| of opti|
|00004150| 6f 6e 73 20 62 61 63 6b | 0a 09 09 09 20 2a 20 74 |ons back|.... * t|
|00004160| 6f 20 63 6c 6f 73 65 20 | 75 70 20 74 68 65 20 64 |o close |up the d|
|00004170| 65 6c 65 74 65 64 20 65 | 6e 74 72 79 2e 0a 09 09 |eleted e|ntry....|
|00004180| 09 20 2a 2f 0a 09 09 09 | 6f 76 62 63 6f 70 79 28 |. */....|ovbcopy(|
|00004190| 28 63 61 64 64 72 5f 74 | 29 28 26 63 70 5b 49 50 |(caddr_t|)(&cp[IP|
|000041a0| 4f 50 54 5f 4f 46 46 53 | 45 54 2b 31 5d 20 2b 0a |OPT_OFFS|ET+1] +.|
|000041b0| 09 09 09 20 20 20 20 73 | 69 7a 65 6f 66 28 73 74 |...    s|izeof(st|
|000041c0| 72 75 63 74 20 69 6e 5f | 61 64 64 72 29 29 2c 0a |ruct in_|addr)),.|
|000041d0| 09 09 09 20 20 20 20 28 | 63 61 64 64 72 5f 74 29 |...    (|caddr_t)|
|000041e0| 26 63 70 5b 49 50 4f 50 | 54 5f 4f 46 46 53 45 54 |&cp[IPOP|T_OFFSET|
|000041f0| 2b 31 5d 2c 0a 09 09 09 | 20 20 20 20 28 75 6e 73 |+1],....|    (uns|
|00004200| 69 67 6e 65 64 29 63 6e | 74 20 2b 20 73 69 7a 65 |igned)cn|t + size|
|00004210| 6f 66 28 73 74 72 75 63 | 74 20 69 6e 5f 61 64 64 |of(struc|t in_add|
|00004220| 72 29 29 3b 0a 09 09 09 | 62 72 65 61 6b 3b 0a 09 |r));....|break;..|
|00004230| 09 7d 0a 09 7d 0a 09 2a | 70 63 62 6f 70 74 20 3d |.}..}..*|pcbopt =|
|00004240| 20 6d 3b 0a 09 72 65 74 | 75 72 6e 20 28 30 29 3b | m;..ret|urn (0);|
|00004250| 0a 0a 62 61 64 3a 0a 09 | 28 76 6f 69 64 29 6d 5f |..bad:..|(void)m_|
|00004260| 66 72 65 65 28 6d 29 3b | 0a 09 72 65 74 75 72 6e |free(m);|..return|
|00004270| 20 28 45 49 4e 56 41 4c | 29 3b 0a 7d 0a 0a 23 69 | (EINVAL|);.}..#i|
|00004280| 66 64 65 66 20 4d 55 4c | 54 49 43 41 53 54 0a 2f |fdef MUL|TICAST./|
|00004290| 2a 0a 20 2a 20 53 65 74 | 20 74 68 65 20 49 50 20 |*. * Set| the IP |
|000042a0| 6d 75 6c 74 69 63 61 73 | 74 20 6f 70 74 69 6f 6e |multicas|t option|
|000042b0| 73 20 69 6e 20 72 65 73 | 70 6f 6e 73 65 20 74 6f |s in res|ponse to|
|000042c0| 20 75 73 65 72 20 73 65 | 74 73 6f 63 6b 6f 70 74 | user se|tsockopt|
|000042d0| 28 29 2e 0a 20 2a 2f 0a | 69 70 5f 73 65 74 6d 6f |().. */.|ip_setmo|
|000042e0| 70 74 69 6f 6e 73 28 6f | 70 74 6e 61 6d 65 2c 20 |ptions(o|ptname, |
|000042f0| 6d 6f 70 74 73 2c 20 6d | 29 0a 09 69 6e 74 20 6f |mopts, m|)..int o|
|00004300| 70 74 6e 61 6d 65 3b 0a | 09 73 74 72 75 63 74 20 |ptname;.|.struct |
|00004310| 6d 62 75 66 20 2a 2a 6d | 6f 70 74 73 3b 0a 09 73 |mbuf **m|opts;..s|
|00004320| 74 72 75 63 74 20 6d 62 | 75 66 20 2a 6d 3b 0a 7b |truct mb|uf *m;.{|
|00004330| 0a 09 69 6e 74 20 65 72 | 72 6f 72 20 3d 20 30 3b |..int er|ror = 0;|
|00004340| 0a 09 73 74 72 75 63 74 | 20 69 70 5f 6d 6f 70 74 |..struct| ip_mopt|
|00004350| 69 6f 6e 73 20 2a 69 6d | 6f 3b 0a 09 75 5f 63 68 |ions *im|o;..u_ch|
|00004360| 61 72 20 6c 6f 6f 70 3b | 0a 09 69 6e 74 20 69 3b |ar loop;|..int i;|
|00004370| 0a 09 73 74 72 75 63 74 | 20 69 6e 5f 61 64 64 72 |..struct| in_addr|
|00004380| 20 61 64 64 72 3b 0a 09 | 73 74 72 75 63 74 20 69 | addr;..|struct i|
|00004390| 70 5f 6d 72 65 71 20 2a | 6d 72 65 71 3b 0a 09 73 |p_mreq *|mreq;..s|
|000043a0| 74 72 75 63 74 20 69 66 | 6e 65 74 20 2a 69 66 70 |truct if|net *ifp|
|000043b0| 3b 0a 09 73 74 72 75 63 | 74 20 72 6f 75 74 65 20 |;..struc|t route |
|000043c0| 72 6f 3b 0a 09 73 74 72 | 75 63 74 20 73 6f 63 6b |ro;..str|uct sock|
|000043d0| 61 64 64 72 5f 69 6e 20 | 2a 64 73 74 3b 0a 0a 09 |addr_in |*dst;...|
|000043e0| 69 66 20 28 2a 6d 6f 70 | 74 73 20 3d 3d 20 4e 55 |if (*mop|ts == NU|
|000043f0| 4c 4c 29 20 7b 0a 09 09 | 2f 2a 0a 09 09 20 2a 20 |LL) {...|/*... * |
|00004400| 4e 6f 20 6d 75 6c 74 69 | 63 61 73 74 20 6f 70 74 |No multi|cast opt|
|00004410| 69 6f 6e 20 62 75 66 66 | 65 72 20 61 74 74 61 63 |ion buff|er attac|
|00004420| 68 65 64 20 74 6f 20 74 | 68 65 20 70 63 62 3b 0a |hed to t|he pcb;.|
|00004430| 09 09 20 2a 20 61 6c 6c | 6f 63 61 74 65 20 6f 6e |.. * all|ocate on|
|00004440| 65 20 61 6e 64 20 69 6e | 69 74 69 61 6c 69 7a 65 |e and in|itialize|
|00004450| 20 74 6f 20 64 65 66 61 | 75 6c 74 20 76 61 6c 75 | to defa|ult valu|
|00004460| 65 73 2e 0a 09 09 20 2a | 2f 0a 09 09 4d 47 45 54 |es.... *|/...MGET|
|00004470| 28 2a 6d 6f 70 74 73 2c | 20 4d 5f 57 41 49 54 2c |(*mopts,| M_WAIT,|
|00004480| 20 4d 54 5f 49 50 4d 4f | 50 54 53 29 3b 0a 09 09 | MT_IPMO|PTS);...|
|00004490| 69 66 20 28 2a 6d 6f 70 | 74 73 20 3d 3d 20 4e 55 |if (*mop|ts == NU|
|000044a0| 4c 4c 29 0a 09 09 09 72 | 65 74 75 72 6e 20 28 45 |LL)....r|eturn (E|
|000044b0| 4e 4f 42 55 46 53 29 3b | 0a 09 09 69 6d 6f 20 3d |NOBUFS);|...imo =|
|000044c0| 20 6d 74 6f 64 28 2a 6d | 6f 70 74 73 2c 20 73 74 | mtod(*m|opts, st|
|000044d0| 72 75 63 74 20 69 70 5f | 6d 6f 70 74 69 6f 6e 73 |ruct ip_|moptions|
|000044e0| 20 2a 29 3b 0a 09 09 69 | 6d 6f 2d 3e 69 6d 6f 5f | *);...i|mo->imo_|
|000044f0| 6d 75 6c 74 69 63 61 73 | 74 5f 69 66 70 20 20 20 |multicas|t_ifp   |
|00004500| 3d 20 4e 55 4c 4c 3b 0a | 09 09 69 6d 6f 2d 3e 69 |= NULL;.|..imo->i|
|00004510| 6d 6f 5f 6d 75 6c 74 69 | 63 61 73 74 5f 74 74 6c |mo_multi|cast_ttl|
|00004520| 20 20 20 3d 20 49 50 5f | 44 45 46 41 55 4c 54 5f |   = IP_|DEFAULT_|
|00004530| 4d 55 4c 54 49 43 41 53 | 54 5f 54 54 4c 3b 0a 09 |MULTICAS|T_TTL;..|
|00004540| 09 69 6d 6f 2d 3e 69 6d | 6f 5f 6d 75 6c 74 69 63 |.imo->im|o_multic|
|00004550| 61 73 74 5f 6c 6f 6f 70 | 20 20 3d 20 49 50 5f 44 |ast_loop|  = IP_D|
|00004560| 45 46 41 55 4c 54 5f 4d | 55 4c 54 49 43 41 53 54 |EFAULT_M|ULTICAST|
|00004570| 5f 4c 4f 4f 50 3b 0a 09 | 09 69 6d 6f 2d 3e 69 6d |_LOOP;..|.imo->im|
|00004580| 6f 5f 6e 75 6d 5f 6d 65 | 6d 62 65 72 73 68 69 70 |o_num_me|mbership|
|00004590| 73 20 3d 20 30 3b 0a 09 | 7d 0a 0a 09 69 6d 6f 20 |s = 0;..|}...imo |
|000045a0| 3d 20 6d 74 6f 64 28 2a | 6d 6f 70 74 73 2c 20 73 |= mtod(*|mopts, s|
|000045b0| 74 72 75 63 74 20 69 70 | 5f 6d 6f 70 74 69 6f 6e |truct ip|_moption|
|000045c0| 73 20 2a 29 3b 0a 0a 09 | 73 77 69 74 63 68 20 28 |s *);...|switch (|
|000045d0| 6f 70 74 6e 61 6d 65 29 | 20 7b 0a 0a 09 63 61 73 |optname)| {...cas|
|000045e0| 65 20 49 50 5f 4d 55 4c | 54 49 43 41 53 54 5f 49 |e IP_MUL|TICAST_I|
|000045f0| 46 3a 0a 09 09 2f 2a 0a | 09 09 20 2a 20 53 65 6c |F:.../*.|.. * Sel|
|00004600| 65 63 74 20 74 68 65 20 | 69 6e 74 65 72 66 61 63 |ect the |interfac|
|00004610| 65 20 66 6f 72 20 6f 75 | 74 67 6f 69 6e 67 20 6d |e for ou|tgoing m|
|00004620| 75 6c 74 69 63 61 73 74 | 20 70 61 63 6b 65 74 73 |ulticast| packets|
|00004630| 2e 0a 09 09 20 2a 2f 0a | 09 09 69 66 20 28 6d 20 |.... */.|..if (m |
|00004640| 3d 3d 20 4e 55 4c 4c 20 | 7c 7c 20 6d 2d 3e 6d 5f |== NULL ||| m->m_|
|00004650| 6c 65 6e 20 21 3d 20 73 | 69 7a 65 6f 66 28 73 74 |len != s|izeof(st|
|00004660| 72 75 63 74 20 69 6e 5f | 61 64 64 72 29 29 20 7b |ruct in_|addr)) {|
|00004670| 0a 09 09 09 65 72 72 6f | 72 20 3d 20 45 49 4e 56 |....erro|r = EINV|
|00004680| 41 4c 3b 0a 09 09 09 62 | 72 65 61 6b 3b 0a 09 09 |AL;....b|reak;...|
|00004690| 7d 0a 09 09 61 64 64 72 | 20 3d 20 2a 28 6d 74 6f |}...addr| = *(mto|
|000046a0| 64 28 6d 2c 20 73 74 72 | 75 63 74 20 69 6e 5f 61 |d(m, str|uct in_a|
|000046b0| 64 64 72 20 2a 29 29 3b | 0a 09 09 2f 2a 0a 09 09 |ddr *));|.../*...|
|000046c0| 20 2a 20 49 4e 41 44 44 | 52 5f 41 4e 59 20 69 73 | * INADD|R_ANY is|
|000046d0| 20 75 73 65 64 20 74 6f | 20 72 65 6d 6f 76 65 20 | used to| remove |
|000046e0| 61 20 70 72 65 76 69 6f | 75 73 20 73 65 6c 65 63 |a previo|us selec|
|000046f0| 74 69 6f 6e 2e 0a 09 09 | 20 2a 20 57 68 65 6e 20 |tion....| * When |
|00004700| 6e 6f 20 69 6e 74 65 72 | 66 61 63 65 20 69 73 20 |no inter|face is |
|00004710| 73 65 6c 65 63 74 65 64 | 2c 20 61 20 64 65 66 61 |selected|, a defa|
|00004720| 75 6c 74 20 6f 6e 65 20 | 69 73 0a 09 09 20 2a 20 |ult one |is... * |
|00004730| 63 68 6f 73 65 6e 20 65 | 76 65 72 79 20 74 69 6d |chosen e|very tim|
|00004740| 65 20 61 20 6d 75 6c 74 | 69 63 61 73 74 20 70 61 |e a mult|icast pa|
|00004750| 63 6b 65 74 20 69 73 20 | 73 65 6e 74 2e 0a 09 09 |cket is |sent....|
|00004760| 20 2a 2f 0a 09 09 69 66 | 20 28 61 64 64 72 2e 73 | */...if| (addr.s|
|00004770| 5f 61 64 64 72 20 3d 3d | 20 49 4e 41 44 44 52 5f |_addr ==| INADDR_|
|00004780| 41 4e 59 29 20 7b 0a 09 | 09 09 69 6d 6f 2d 3e 69 |ANY) {..|..imo->i|
|00004790| 6d 6f 5f 6d 75 6c 74 69 | 63 61 73 74 5f 69 66 70 |mo_multi|cast_ifp|
|000047a0| 20 3d 20 4e 55 4c 4c 3b | 0a 09 09 09 62 72 65 61 | = NULL;|....brea|
|000047b0| 6b 3b 0a 09 09 7d 0a 09 | 09 2f 2a 0a 09 09 20 2a |k;...}..|./*... *|
|000047c0| 20 54 68 65 20 73 65 6c | 65 63 74 65 64 20 69 6e | The sel|ected in|
|000047d0| 74 65 72 66 61 63 65 20 | 69 73 20 69 64 65 6e 74 |terface |is ident|
|000047e0| 69 66 69 65 64 20 62 79 | 20 69 74 73 20 6c 6f 63 |ified by| its loc|
|000047f0| 61 6c 0a 09 09 20 2a 20 | 49 50 20 61 64 64 72 65 |al... * |IP addre|
|00004800| 73 73 2e 20 20 46 69 6e | 64 20 74 68 65 20 69 6e |ss.  Fin|d the in|
|00004810| 74 65 72 66 61 63 65 20 | 61 6e 64 20 63 6f 6e 66 |terface |and conf|
|00004820| 69 72 6d 20 74 68 61 74 | 0a 09 09 20 2a 20 69 74 |irm that|... * it|
|00004830| 20 73 75 70 70 6f 72 74 | 73 20 6d 75 6c 74 69 63 | support|s multic|
|00004840| 61 73 74 69 6e 67 2e 0a | 09 09 20 2a 2f 0a 09 09 |asting..|.. */...|
|00004850| 49 4e 41 44 44 52 5f 54 | 4f 5f 49 46 50 28 61 64 |INADDR_T|O_IFP(ad|
|00004860| 64 72 2c 20 69 66 70 29 | 3b 0a 09 09 69 66 20 28 |dr, ifp)|;...if (|
|00004870| 69 66 70 20 3d 3d 20 4e | 55 4c 4c 20 7c 7c 20 28 |ifp == N|ULL || (|
|00004880| 69 66 70 2d 3e 69 66 5f | 66 6c 61 67 73 20 26 20 |ifp->if_|flags & |
|00004890| 49 46 46 5f 4d 55 4c 54 | 49 43 41 53 54 29 20 3d |IFF_MULT|ICAST) =|
|000048a0| 3d 20 30 29 20 7b 0a 09 | 09 09 65 72 72 6f 72 20 |= 0) {..|..error |
|000048b0| 3d 20 45 41 44 44 52 4e | 4f 54 41 56 41 49 4c 3b |= EADDRN|OTAVAIL;|
|000048c0| 0a 09 09 09 62 72 65 61 | 6b 3b 0a 09 09 7d 0a 09 |....brea|k;...}..|
|000048d0| 09 69 6d 6f 2d 3e 69 6d | 6f 5f 6d 75 6c 74 69 63 |.imo->im|o_multic|
|000048e0| 61 73 74 5f 69 66 70 20 | 3d 20 69 66 70 3b 0a 09 |ast_ifp |= ifp;..|
|000048f0| 09 62 72 65 61 6b 3b 0a | 0a 09 63 61 73 65 20 49 |.break;.|..case I|
|00004900| 50 5f 4d 55 4c 54 49 43 | 41 53 54 5f 54 54 4c 3a |P_MULTIC|AST_TTL:|
|00004910| 0a 09 09 2f 2a 0a 09 09 | 20 2a 20 53 65 74 20 74 |.../*...| * Set t|
|00004920| 68 65 20 49 50 20 74 69 | 6d 65 2d 74 6f 2d 6c 69 |he IP ti|me-to-li|
|00004930| 76 65 20 66 6f 72 20 6f | 75 74 67 6f 69 6e 67 20 |ve for o|utgoing |
|00004940| 6d 75 6c 74 69 63 61 73 | 74 20 70 61 63 6b 65 74 |multicas|t packet|
|00004950| 73 2e 0a 09 09 20 2a 2f | 0a 09 09 69 66 20 28 6d |s.... */|...if (m|
|00004960| 20 3d 3d 20 4e 55 4c 4c | 20 7c 7c 20 6d 2d 3e 6d | == NULL| || m->m|
|00004970| 5f 6c 65 6e 20 21 3d 20 | 31 29 20 7b 0a 09 09 09 |_len != |1) {....|
|00004980| 65 72 72 6f 72 20 3d 20 | 45 49 4e 56 41 4c 3b 0a |error = |EINVAL;.|
|00004990| 09 09 09 62 72 65 61 6b | 3b 0a 09 09 7d 0a 09 09 |...break|;...}...|
|000049a0| 69 6d 6f 2d 3e 69 6d 6f | 5f 6d 75 6c 74 69 63 61 |imo->imo|_multica|
|000049b0| 73 74 5f 74 74 6c 20 3d | 20 2a 28 6d 74 6f 64 28 |st_ttl =| *(mtod(|
|000049c0| 6d 2c 20 75 5f 63 68 61 | 72 20 2a 29 29 3b 0a 09 |m, u_cha|r *));..|
|000049d0| 09 62 72 65 61 6b 3b 0a | 0a 09 63 61 73 65 20 49 |.break;.|..case I|
|000049e0| 50 5f 4d 55 4c 54 49 43 | 41 53 54 5f 4c 4f 4f 50 |P_MULTIC|AST_LOOP|
|000049f0| 3a 0a 09 09 2f 2a 0a 09 | 09 20 2a 20 53 65 74 20 |:.../*..|. * Set |
|00004a00| 74 68 65 20 6c 6f 6f 70 | 62 61 63 6b 20 66 6c 61 |the loop|back fla|
|00004a10| 67 20 66 6f 72 20 6f 75 | 74 67 6f 69 6e 67 20 6d |g for ou|tgoing m|
|00004a20| 75 6c 74 69 63 61 73 74 | 20 70 61 63 6b 65 74 73 |ulticast| packets|
|00004a30| 2e 0a 09 09 20 2a 20 4d | 75 73 74 20 62 65 20 7a |.... * M|ust be z|
|00004a40| 65 72 6f 20 6f 72 20 6f | 6e 65 2e 0a 09 09 20 2a |ero or o|ne.... *|
|00004a50| 2f 0a 09 09 69 66 20 28 | 6d 20 3d 3d 20 4e 55 4c |/...if (|m == NUL|
|00004a60| 4c 20 7c 7c 20 6d 2d 3e | 6d 5f 6c 65 6e 20 21 3d |L || m->|m_len !=|
|00004a70| 20 31 20 7c 7c 0a 09 09 | 20 20 20 28 6c 6f 6f 70 | 1 ||...|   (loop|
|00004a80| 20 3d 20 2a 28 6d 74 6f | 64 28 6d 2c 20 75 5f 63 | = *(mto|d(m, u_c|
|00004a90| 68 61 72 20 2a 29 29 29 | 20 3e 20 31 29 20 7b 0a |har *)))| > 1) {.|
|00004aa0| 09 09 09 65 72 72 6f 72 | 20 3d 20 45 49 4e 56 41 |...error| = EINVA|
|00004ab0| 4c 3b 0a 09 09 09 62 72 | 65 61 6b 3b 0a 09 09 7d |L;....br|eak;...}|
|00004ac0| 0a 09 09 69 6d 6f 2d 3e | 69 6d 6f 5f 6d 75 6c 74 |...imo->|imo_mult|
|00004ad0| 69 63 61 73 74 5f 6c 6f | 6f 70 20 3d 20 6c 6f 6f |icast_lo|op = loo|
|00004ae0| 70 3b 0a 09 09 62 72 65 | 61 6b 3b 0a 0a 09 63 61 |p;...bre|ak;...ca|
|00004af0| 73 65 20 49 50 5f 41 44 | 44 5f 4d 45 4d 42 45 52 |se IP_AD|D_MEMBER|
|00004b00| 53 48 49 50 3a 0a 09 09 | 2f 2a 0a 09 09 20 2a 20 |SHIP:...|/*... * |
|00004b10| 41 64 64 20 61 20 6d 75 | 6c 74 69 63 61 73 74 20 |Add a mu|lticast |
|00004b20| 67 72 6f 75 70 20 6d 65 | 6d 62 65 72 73 68 69 70 |group me|mbership|
|00004b30| 2e 0a 09 09 20 2a 20 47 | 72 6f 75 70 20 6d 75 73 |.... * G|roup mus|
|00004b40| 74 20 62 65 20 61 20 76 | 61 6c 69 64 20 49 50 20 |t be a v|alid IP |
|00004b50| 6d 75 6c 74 69 63 61 73 | 74 20 61 64 64 72 65 73 |multicas|t addres|
|00004b60| 73 2e 0a 09 09 20 2a 2f | 0a 09 09 69 66 20 28 6d |s.... */|...if (m|
|00004b70| 20 3d 3d 20 4e 55 4c 4c | 20 7c 7c 20 6d 2d 3e 6d | == NULL| || m->m|
|00004b80| 5f 6c 65 6e 20 21 3d 20 | 73 69 7a 65 6f 66 28 73 |_len != |sizeof(s|
|00004b90| 74 72 75 63 74 20 69 70 | 5f 6d 72 65 71 29 29 20 |truct ip|_mreq)) |
|00004ba0| 7b 0a 09 09 09 65 72 72 | 6f 72 20 3d 20 45 49 4e |{....err|or = EIN|
|00004bb0| 56 41 4c 3b 0a 09 09 09 | 62 72 65 61 6b 3b 0a 09 |VAL;....|break;..|
|00004bc0| 09 7d 0a 09 09 6d 72 65 | 71 20 3d 20 6d 74 6f 64 |.}...mre|q = mtod|
|00004bd0| 28 6d 2c 20 73 74 72 75 | 63 74 20 69 70 5f 6d 72 |(m, stru|ct ip_mr|
|00004be0| 65 71 20 2a 29 3b 0a 09 | 09 69 66 20 28 21 49 4e |eq *);..|.if (!IN|
|00004bf0| 5f 4d 55 4c 54 49 43 41 | 53 54 28 6e 74 6f 68 6c |_MULTICA|ST(ntohl|
|00004c00| 28 6d 72 65 71 2d 3e 69 | 6d 72 5f 6d 75 6c 74 69 |(mreq->i|mr_multi|
|00004c10| 61 64 64 72 2e 73 5f 61 | 64 64 72 29 29 29 20 7b |addr.s_a|ddr))) {|
|00004c20| 0a 09 09 09 65 72 72 6f | 72 20 3d 20 45 49 4e 56 |....erro|r = EINV|
|00004c30| 41 4c 3b 0a 09 09 09 62 | 72 65 61 6b 3b 0a 09 09 |AL;....b|reak;...|
|00004c40| 7d 0a 09 09 2f 2a 0a 09 | 09 20 2a 20 49 66 20 6e |}.../*..|. * If n|
|00004c50| 6f 20 69 6e 74 65 72 66 | 61 63 65 20 61 64 64 72 |o interf|ace addr|
|00004c60| 65 73 73 20 77 61 73 20 | 70 72 6f 76 69 64 65 64 |ess was |provided|
|00004c70| 2c 20 75 73 65 20 74 68 | 65 20 69 6e 74 65 72 66 |, use th|e interf|
|00004c80| 61 63 65 20 6f 66 0a 09 | 09 20 2a 20 74 68 65 20 |ace of..|. * the |
|00004c90| 72 6f 75 74 65 20 74 6f | 20 74 68 65 20 67 69 76 |route to| the giv|
|00004ca0| 65 6e 20 6d 75 6c 74 69 | 63 61 73 74 20 61 64 64 |en multi|cast add|
|00004cb0| 72 65 73 73 2e 0a 09 09 | 20 2a 2f 0a 09 09 69 66 |ress....| */...if|
|00004cc0| 20 28 6d 72 65 71 2d 3e | 69 6d 72 5f 69 6e 74 65 | (mreq->|imr_inte|
|00004cd0| 72 66 61 63 65 2e 73 5f | 61 64 64 72 20 3d 3d 20 |rface.s_|addr == |
|00004ce0| 49 4e 41 44 44 52 5f 41 | 4e 59 29 20 7b 0a 09 09 |INADDR_A|NY) {...|
|00004cf0| 09 72 6f 2e 72 6f 5f 72 | 74 20 3d 20 4e 55 4c 4c |.ro.ro_r|t = NULL|
|00004d00| 3b 0a 09 09 09 64 73 74 | 20 3d 20 28 73 74 72 75 |;....dst| = (stru|
|00004d10| 63 74 20 73 6f 63 6b 61 | 64 64 72 5f 69 6e 20 2a |ct socka|ddr_in *|
|00004d20| 29 26 72 6f 2e 72 6f 5f | 64 73 74 3b 0a 09 09 09 |)&ro.ro_|dst;....|
|00004d30| 64 73 74 2d 3e 73 69 6e | 5f 66 61 6d 69 6c 79 20 |dst->sin|_family |
|00004d40| 3d 20 41 46 5f 49 4e 45 | 54 3b 0a 09 09 09 64 73 |= AF_INE|T;....ds|
|00004d50| 74 2d 3e 73 69 6e 5f 61 | 64 64 72 20 20 20 3d 20 |t->sin_a|ddr   = |
|00004d60| 6d 72 65 71 2d 3e 69 6d | 72 5f 6d 75 6c 74 69 61 |mreq->im|r_multia|
|00004d70| 64 64 72 3b 0a 09 09 09 | 72 74 61 6c 6c 6f 63 28 |ddr;....|rtalloc(|
|00004d80| 26 72 6f 29 3b 0a 09 09 | 09 69 66 20 28 72 6f 2e |&ro);...|.if (ro.|
|00004d90| 72 6f 5f 72 74 20 3d 3d | 20 4e 55 4c 4c 29 20 7b |ro_rt ==| NULL) {|
|00004da0| 0a 09 09 09 09 65 72 72 | 6f 72 20 3d 20 45 41 44 |.....err|or = EAD|
|00004db0| 44 52 4e 4f 54 41 56 41 | 49 4c 3b 0a 09 09 09 09 |DRNOTAVA|IL;.....|
|00004dc0| 62 72 65 61 6b 3b 0a 09 | 09 09 7d 0a 09 09 09 69 |break;..|..}....i|
|00004dd0| 66 70 20 3d 20 72 6f 2e | 72 6f 5f 72 74 2d 3e 72 |fp = ro.|ro_rt->r|
|00004de0| 74 5f 69 66 70 3b 0a 09 | 09 09 72 74 66 72 65 65 |t_ifp;..|..rtfree|
|00004df0| 28 72 6f 2e 72 6f 5f 72 | 74 29 3b 0a 09 09 7d 0a |(ro.ro_r|t);...}.|
|00004e00| 09 09 65 6c 73 65 20 7b | 0a 09 09 09 49 4e 41 44 |..else {|....INAD|
|00004e10| 44 52 5f 54 4f 5f 49 46 | 50 28 6d 72 65 71 2d 3e |DR_TO_IF|P(mreq->|
|00004e20| 69 6d 72 5f 69 6e 74 65 | 72 66 61 63 65 2c 20 69 |imr_inte|rface, i|
|00004e30| 66 70 29 3b 0a 09 09 7d | 0a 09 09 2f 2a 0a 09 09 |fp);...}|.../*...|
|00004e40| 20 2a 20 53 65 65 20 69 | 66 20 77 65 20 66 6f 75 | * See i|f we fou|
|00004e50| 6e 64 20 61 6e 20 69 6e | 74 65 72 66 61 63 65 2c |nd an in|terface,|
|00004e60| 20 61 6e 64 20 63 6f 6e | 66 69 72 6d 20 74 68 61 | and con|firm tha|
|00004e70| 74 20 69 74 0a 09 09 20 | 2a 20 73 75 70 70 6f 72 |t it... |* suppor|
|00004e80| 74 73 20 6d 75 6c 74 69 | 63 61 73 74 2e 0a 09 09 |ts multi|cast....|
|00004e90| 20 2a 2f 0a 09 09 69 66 | 20 28 69 66 70 20 3d 3d | */...if| (ifp ==|
|00004ea0| 20 4e 55 4c 4c 20 7c 7c | 20 28 69 66 70 2d 3e 69 | NULL ||| (ifp->i|
|00004eb0| 66 5f 66 6c 61 67 73 20 | 26 20 49 46 46 5f 4d 55 |f_flags |& IFF_MU|
|00004ec0| 4c 54 49 43 41 53 54 29 | 20 3d 3d 20 30 29 20 7b |LTICAST)| == 0) {|
|00004ed0| 0a 09 09 09 65 72 72 6f | 72 20 3d 20 45 41 44 44 |....erro|r = EADD|
|00004ee0| 52 4e 4f 54 41 56 41 49 | 4c 3b 0a 09 09 09 62 72 |RNOTAVAI|L;....br|
|00004ef0| 65 61 6b 3b 0a 09 09 7d | 0a 09 09 2f 2a 0a 09 09 |eak;...}|.../*...|
|00004f00| 20 2a 20 53 65 65 20 69 | 66 20 74 68 65 20 6d 65 | * See i|f the me|
|00004f10| 6d 62 65 72 73 68 69 70 | 20 61 6c 72 65 61 64 79 |mbership| already|
|00004f20| 20 65 78 69 73 74 73 20 | 6f 72 20 69 66 20 61 6c | exists |or if al|
|00004f30| 6c 20 74 68 65 0a 09 09 | 20 2a 20 6d 65 6d 62 65 |l the...| * membe|
|00004f40| 72 73 68 69 70 20 73 6c | 6f 74 73 20 61 72 65 20 |rship sl|ots are |
|00004f50| 66 75 6c 6c 2e 0a 09 09 | 20 2a 2f 0a 09 09 66 6f |full....| */...fo|
|00004f60| 72 20 28 69 20 3d 20 30 | 3b 20 69 20 3c 20 69 6d |r (i = 0|; i < im|
|00004f70| 6f 2d 3e 69 6d 6f 5f 6e | 75 6d 5f 6d 65 6d 62 65 |o->imo_n|um_membe|
|00004f80| 72 73 68 69 70 73 3b 20 | 2b 2b 69 29 20 7b 0a 09 |rships; |++i) {..|
|00004f90| 09 09 69 66 20 28 69 6d | 6f 2d 3e 69 6d 6f 5f 6d |..if (im|o->imo_m|
|00004fa0| 65 6d 62 65 72 73 68 69 | 70 5b 69 5d 2d 3e 69 6e |embershi|p[i]->in|
|00004fb0| 6d 5f 69 66 70 20 3d 3d | 20 69 66 70 20 26 26 0a |m_ifp ==| ifp &&.|
|00004fc0| 09 09 09 20 20 20 20 69 | 6d 6f 2d 3e 69 6d 6f 5f |...    i|mo->imo_|
|00004fd0| 6d 65 6d 62 65 72 73 68 | 69 70 5b 69 5d 2d 3e 69 |membersh|ip[i]->i|
|00004fe0| 6e 6d 5f 61 64 64 72 2e | 73 5f 61 64 64 72 0a 09 |nm_addr.|s_addr..|
|00004ff0| 09 09 09 09 09 3d 3d 20 | 6d 72 65 71 2d 3e 69 6d |.....== |mreq->im|
|00005000| 72 5f 6d 75 6c 74 69 61 | 64 64 72 2e 73 5f 61 64 |r_multia|ddr.s_ad|
|00005010| 64 72 29 0a 09 09 09 09 | 62 72 65 61 6b 3b 0a 09 |dr).....|break;..|
|00005020| 09 7d 0a 09 09 69 66 20 | 28 69 20 3c 20 69 6d 6f |.}...if |(i < imo|
|00005030| 2d 3e 69 6d 6f 5f 6e 75 | 6d 5f 6d 65 6d 62 65 72 |->imo_nu|m_member|
|00005040| 73 68 69 70 73 29 20 7b | 0a 09 09 09 65 72 72 6f |ships) {|....erro|
|00005050| 72 20 3d 20 45 41 44 44 | 52 49 4e 55 53 45 3b 0a |r = EADD|RINUSE;.|
|00005060| 09 09 09 62 72 65 61 6b | 3b 0a 09 09 7d 0a 09 09 |...break|;...}...|
|00005070| 69 66 20 28 69 20 3d 3d | 20 49 50 5f 4d 41 58 5f |if (i ==| IP_MAX_|
|00005080| 4d 45 4d 42 45 52 53 48 | 49 50 53 29 20 7b 0a 09 |MEMBERSH|IPS) {..|
|00005090| 09 09 65 72 72 6f 72 20 | 3d 20 45 54 4f 4f 4d 41 |..error |= ETOOMA|
|000050a0| 4e 59 52 45 46 53 3b 0a | 09 09 09 62 72 65 61 6b |NYREFS;.|...break|
|000050b0| 3b 0a 09 09 7d 0a 09 09 | 2f 2a 0a 09 09 20 2a 20 |;...}...|/*... * |
|000050c0| 45 76 65 72 79 74 68 69 | 6e 67 20 6c 6f 6f 6b 73 |Everythi|ng looks|
|000050d0| 20 67 6f 6f 64 3b 20 61 | 64 64 20 61 20 6e 65 77 | good; a|dd a new|
|000050e0| 20 72 65 63 6f 72 64 20 | 74 6f 20 74 68 65 20 6d | record |to the m|
|000050f0| 75 6c 74 69 63 61 73 74 | 0a 09 09 20 2a 20 61 64 |ulticast|... * ad|
|00005100| 64 72 65 73 73 20 6c 69 | 73 74 20 66 6f 72 20 74 |dress li|st for t|
|00005110| 68 65 20 67 69 76 65 6e | 20 69 6e 74 65 72 66 61 |he given| interfa|
|00005120| 63 65 2e 0a 09 09 20 2a | 2f 0a 09 09 69 66 20 28 |ce.... *|/...if (|
|00005130| 28 69 6d 6f 2d 3e 69 6d | 6f 5f 6d 65 6d 62 65 72 |(imo->im|o_member|
|00005140| 73 68 69 70 5b 69 5d 20 | 3d 0a 09 09 20 20 20 20 |ship[i] |=...    |
|00005150| 69 6e 5f 61 64 64 6d 75 | 6c 74 69 28 6d 72 65 71 |in_addmu|lti(mreq|
|00005160| 2d 3e 69 6d 72 5f 6d 75 | 6c 74 69 61 64 64 72 2c |->imr_mu|ltiaddr,|
|00005170| 20 69 66 70 29 29 20 3d | 3d 20 4e 55 4c 4c 29 20 | ifp)) =|= NULL) |
|00005180| 7b 0a 09 09 09 65 72 72 | 6f 72 20 3d 20 45 4e 4f |{....err|or = ENO|
|00005190| 42 55 46 53 3b 0a 09 09 | 09 62 72 65 61 6b 3b 0a |BUFS;...|.break;.|
|000051a0| 09 09 7d 0a 09 09 2b 2b | 69 6d 6f 2d 3e 69 6d 6f |..}...++|imo->imo|
|000051b0| 5f 6e 75 6d 5f 6d 65 6d | 62 65 72 73 68 69 70 73 |_num_mem|berships|
|000051c0| 3b 0a 09 09 62 72 65 61 | 6b 3b 0a 0a 09 63 61 73 |;...brea|k;...cas|
|000051d0| 65 20 49 50 5f 44 52 4f | 50 5f 4d 45 4d 42 45 52 |e IP_DRO|P_MEMBER|
|000051e0| 53 48 49 50 3a 0a 09 09 | 2f 2a 0a 09 09 20 2a 20 |SHIP:...|/*... * |
|000051f0| 44 72 6f 70 20 61 20 6d | 75 6c 74 69 63 61 73 74 |Drop a m|ulticast|
|00005200| 20 67 72 6f 75 70 20 6d | 65 6d 62 65 72 73 68 69 | group m|embershi|
|00005210| 70 2e 0a 09 09 20 2a 20 | 47 72 6f 75 70 20 6d 75 |p.... * |Group mu|
|00005220| 73 74 20 62 65 20 61 20 | 76 61 6c 69 64 20 49 50 |st be a |valid IP|
|00005230| 20 6d 75 6c 74 69 63 61 | 73 74 20 61 64 64 72 65 | multica|st addre|
|00005240| 73 73 2e 0a 09 09 20 2a | 2f 0a 09 09 69 66 20 28 |ss.... *|/...if (|
|00005250| 6d 20 3d 3d 20 4e 55 4c | 4c 20 7c 7c 20 6d 2d 3e |m == NUL|L || m->|
|00005260| 6d 5f 6c 65 6e 20 21 3d | 20 73 69 7a 65 6f 66 28 |m_len !=| sizeof(|
|00005270| 73 74 72 75 63 74 20 69 | 70 5f 6d 72 65 71 29 29 |struct i|p_mreq))|
|00005280| 20 7b 0a 09 09 09 65 72 | 72 6f 72 20 3d 20 45 49 | {....er|ror = EI|
|00005290| 4e 56 41 4c 3b 0a 09 09 | 09 62 72 65 61 6b 3b 0a |NVAL;...|.break;.|
|000052a0| 09 09 7d 0a 09 09 6d 72 | 65 71 20 3d 20 6d 74 6f |..}...mr|eq = mto|
|000052b0| 64 28 6d 2c 20 73 74 72 | 75 63 74 20 69 70 5f 6d |d(m, str|uct ip_m|
|000052c0| 72 65 71 20 2a 29 3b 0a | 09 09 69 66 20 28 21 49 |req *);.|..if (!I|
|000052d0| 4e 5f 4d 55 4c 54 49 43 | 41 53 54 28 6e 74 6f 68 |N_MULTIC|AST(ntoh|
|000052e0| 6c 28 6d 72 65 71 2d 3e | 69 6d 72 5f 6d 75 6c 74 |l(mreq->|imr_mult|
|000052f0| 69 61 64 64 72 2e 73 5f | 61 64 64 72 29 29 29 20 |iaddr.s_|addr))) |
|00005300| 7b 0a 09 09 09 65 72 72 | 6f 72 20 3d 20 45 49 4e |{....err|or = EIN|
|00005310| 56 41 4c 3b 0a 09 09 09 | 62 72 65 61 6b 3b 0a 09 |VAL;....|break;..|
|00005320| 09 7d 0a 09 09 2f 2a 0a | 09 09 20 2a 20 49 66 20 |.}.../*.|.. * If |
|00005330| 61 6e 20 69 6e 74 65 72 | 66 61 63 65 20 61 64 64 |an inter|face add|
|00005340| 72 65 73 73 20 77 61 73 | 20 73 70 65 63 69 66 69 |ress was| specifi|
|00005350| 65 64 2c 20 67 65 74 20 | 61 20 70 6f 69 6e 74 65 |ed, get |a pointe|
|00005360| 72 0a 09 09 20 2a 20 74 | 6f 20 69 74 73 20 69 66 |r... * t|o its if|
|00005370| 6e 65 74 20 73 74 72 75 | 63 74 75 72 65 2e 0a 09 |net stru|cture...|
|00005380| 09 20 2a 2f 0a 09 09 69 | 66 20 28 6d 72 65 71 2d |. */...i|f (mreq-|
|00005390| 3e 69 6d 72 5f 69 6e 74 | 65 72 66 61 63 65 2e 73 |>imr_int|erface.s|
|000053a0| 5f 61 64 64 72 20 3d 3d | 20 49 4e 41 44 44 52 5f |_addr ==| INADDR_|
|000053b0| 41 4e 59 29 0a 09 09 09 | 69 66 70 20 3d 20 4e 55 |ANY)....|ifp = NU|
|000053c0| 4c 4c 3b 0a 09 09 65 6c | 73 65 20 7b 0a 09 09 09 |LL;...el|se {....|
|000053d0| 49 4e 41 44 44 52 5f 54 | 4f 5f 49 46 50 28 6d 72 |INADDR_T|O_IFP(mr|
|000053e0| 65 71 2d 3e 69 6d 72 5f | 69 6e 74 65 72 66 61 63 |eq->imr_|interfac|
|000053f0| 65 2c 20 69 66 70 29 3b | 0a 09 09 09 69 66 20 28 |e, ifp);|....if (|
|00005400| 69 66 70 20 3d 3d 20 4e | 55 4c 4c 29 20 7b 0a 09 |ifp == N|ULL) {..|
|00005410| 09 09 09 65 72 72 6f 72 | 20 3d 20 45 41 44 44 52 |...error| = EADDR|
|00005420| 4e 4f 54 41 56 41 49 4c | 3b 0a 09 09 09 09 62 72 |NOTAVAIL|;.....br|
|00005430| 65 61 6b 3b 0a 09 09 09 | 7d 0a 09 09 7d 0a 09 09 |eak;....|}...}...|
|00005440| 2f 2a 0a 09 09 20 2a 20 | 46 69 6e 64 20 74 68 65 |/*... * |Find the|
|00005450| 20 6d 65 6d 62 65 72 73 | 68 69 70 20 69 6e 20 74 | members|hip in t|
|00005460| 68 65 20 6d 65 6d 62 65 | 72 73 68 69 70 20 61 72 |he membe|rship ar|
|00005470| 72 61 79 2e 0a 09 09 20 | 2a 2f 0a 09 09 66 6f 72 |ray.... |*/...for|
|00005480| 20 28 69 20 3d 20 30 3b | 20 69 20 3c 20 69 6d 6f | (i = 0;| i < imo|
|00005490| 2d 3e 69 6d 6f 5f 6e 75 | 6d 5f 6d 65 6d 62 65 72 |->imo_nu|m_member|
|000054a0| 73 68 69 70 73 3b 20 2b | 2b 69 29 20 7b 0a 09 09 |ships; +|+i) {...|
|000054b0| 09 69 66 20 28 28 69 66 | 70 20 3d 3d 20 4e 55 4c |.if ((if|p == NUL|
|000054c0| 4c 20 7c 7c 0a 09 09 09 | 20 20 20 20 20 69 6d 6f |L ||....|     imo|
|000054d0| 2d 3e 69 6d 6f 5f 6d 65 | 6d 62 65 72 73 68 69 70 |->imo_me|mbership|
|000054e0| 5b 69 5d 2d 3e 69 6e 6d | 5f 69 66 70 20 3d 3d 20 |[i]->inm|_ifp == |
|000054f0| 69 66 70 29 20 26 26 0a | 09 09 09 20 20 20 20 20 |ifp) &&.|...     |
|00005500| 69 6d 6f 2d 3e 69 6d 6f | 5f 6d 65 6d 62 65 72 73 |imo->imo|_members|
|00005510| 68 69 70 5b 69 5d 2d 3e | 69 6e 6d 5f 61 64 64 72 |hip[i]->|inm_addr|
|00005520| 2e 73 5f 61 64 64 72 0a | 09 09 09 09 09 20 20 20 |.s_addr.|.....   |
|00005530| 20 3d 3d 20 6d 72 65 71 | 2d 3e 69 6d 72 5f 6d 75 | == mreq|->imr_mu|
|00005540| 6c 74 69 61 64 64 72 2e | 73 5f 61 64 64 72 29 0a |ltiaddr.|s_addr).|
|00005550| 09 09 09 09 62 72 65 61 | 6b 3b 0a 09 09 7d 0a 09 |....brea|k;...}..|
|00005560| 09 69 66 20 28 69 20 3d | 3d 20 69 6d 6f 2d 3e 69 |.if (i =|= imo->i|
|00005570| 6d 6f 5f 6e 75 6d 5f 6d | 65 6d 62 65 72 73 68 69 |mo_num_m|embershi|
|00005580| 70 73 29 20 7b 0a 09 09 | 09 65 72 72 6f 72 20 3d |ps) {...|.error =|
|00005590| 20 45 41 44 44 52 4e 4f | 54 41 56 41 49 4c 3b 0a | EADDRNO|TAVAIL;.|
|000055a0| 09 09 09 62 72 65 61 6b | 3b 0a 09 09 7d 0a 09 09 |...break|;...}...|
|000055b0| 2f 2a 0a 09 09 20 2a 20 | 47 69 76 65 20 75 70 20 |/*... * |Give up |
|000055c0| 74 68 65 20 6d 75 6c 74 | 69 63 61 73 74 20 61 64 |the mult|icast ad|
|000055d0| 64 72 65 73 73 20 72 65 | 63 6f 72 64 20 74 6f 20 |dress re|cord to |
|000055e0| 77 68 69 63 68 20 74 68 | 65 0a 09 09 20 2a 20 6d |which th|e... * m|
|000055f0| 65 6d 62 65 72 73 68 69 | 70 20 70 6f 69 6e 74 73 |embershi|p points|
|00005600| 2e 0a 09 09 20 2a 2f 0a | 09 09 69 6e 5f 64 65 6c |.... */.|..in_del|
|00005610| 6d 75 6c 74 69 28 69 6d | 6f 2d 3e 69 6d 6f 5f 6d |multi(im|o->imo_m|
|00005620| 65 6d 62 65 72 73 68 69 | 70 5b 69 5d 29 3b 0a 09 |embershi|p[i]);..|
|00005630| 09 2f 2a 0a 09 09 20 2a | 20 52 65 6d 6f 76 65 20 |./*... *| Remove |
|00005640| 74 68 65 20 67 61 70 20 | 69 6e 20 74 68 65 20 6d |the gap |in the m|
|00005650| 65 6d 62 65 72 73 68 69 | 70 20 61 72 72 61 79 2e |embershi|p array.|
|00005660| 0a 09 09 20 2a 2f 0a 09 | 09 66 6f 72 20 28 2b 2b |... */..|.for (++|
|00005670| 69 3b 20 69 20 3c 20 69 | 6d 6f 2d 3e 69 6d 6f 5f |i; i < i|mo->imo_|
|00005680| 6e 75 6d 5f 6d 65 6d 62 | 65 72 73 68 69 70 73 3b |num_memb|erships;|
|00005690| 20 2b 2b 69 29 0a 09 09 | 09 69 6d 6f 2d 3e 69 6d | ++i)...|.imo->im|
|000056a0| 6f 5f 6d 65 6d 62 65 72 | 73 68 69 70 5b 69 2d 31 |o_member|ship[i-1|
|000056b0| 5d 20 3d 20 69 6d 6f 2d | 3e 69 6d 6f 5f 6d 65 6d |] = imo-|>imo_mem|
|000056c0| 62 65 72 73 68 69 70 5b | 69 5d 3b 0a 09 09 2d 2d |bership[|i];...--|
|000056d0| 69 6d 6f 2d 3e 69 6d 6f | 5f 6e 75 6d 5f 6d 65 6d |imo->imo|_num_mem|
|000056e0| 62 65 72 73 68 69 70 73 | 3b 0a 09 09 62 72 65 61 |berships|;...brea|
|000056f0| 6b 3b 0a 0a 09 64 65 66 | 61 75 6c 74 3a 0a 09 09 |k;...def|ault:...|
|00005700| 65 72 72 6f 72 20 3d 20 | 45 4f 50 4e 4f 54 53 55 |error = |EOPNOTSU|
|00005710| 50 50 3b 0a 09 09 62 72 | 65 61 6b 3b 0a 09 7d 0a |PP;...br|eak;..}.|
|00005720| 0a 09 2f 2a 0a 09 20 2a | 20 49 66 20 61 6c 6c 20 |../*.. *| If all |
|00005730| 6f 70 74 69 6f 6e 73 20 | 68 61 76 65 20 64 65 66 |options |have def|
|00005740| 61 75 6c 74 20 76 61 6c | 75 65 73 2c 20 6e 6f 20 |ault val|ues, no |
|00005750| 6e 65 65 64 20 74 6f 20 | 6b 65 65 70 20 74 68 65 |need to |keep the|
|00005760| 20 6d 62 75 66 2e 0a 09 | 20 2a 2f 0a 09 69 66 20 | mbuf...| */..if |
|00005770| 28 69 6d 6f 2d 3e 69 6d | 6f 5f 6d 75 6c 74 69 63 |(imo->im|o_multic|
|00005780| 61 73 74 5f 69 66 70 20 | 20 20 3d 3d 20 4e 55 4c |ast_ifp |  == NUL|
|00005790| 4c 20 26 26 0a 09 20 20 | 20 20 69 6d 6f 2d 3e 69 |L &&..  |  imo->i|
|000057a0| 6d 6f 5f 6d 75 6c 74 69 | 63 61 73 74 5f 74 74 6c |mo_multi|cast_ttl|
|000057b0| 20 20 20 3d 3d 20 49 50 | 5f 44 45 46 41 55 4c 54 |   == IP|_DEFAULT|
|000057c0| 5f 4d 55 4c 54 49 43 41 | 53 54 5f 54 54 4c 20 26 |_MULTICA|ST_TTL &|
|000057d0| 26 0a 09 20 20 20 20 69 | 6d 6f 2d 3e 69 6d 6f 5f |&..    i|mo->imo_|
|000057e0| 6d 75 6c 74 69 63 61 73 | 74 5f 6c 6f 6f 70 20 20 |multicas|t_loop  |
|000057f0| 3d 3d 20 49 50 5f 44 45 | 46 41 55 4c 54 5f 4d 55 |== IP_DE|FAULT_MU|
|00005800| 4c 54 49 43 41 53 54 5f | 4c 4f 4f 50 20 26 26 0a |LTICAST_|LOOP &&.|
|00005810| 09 20 20 20 20 69 6d 6f | 2d 3e 69 6d 6f 5f 6e 75 |.    imo|->imo_nu|
|00005820| 6d 5f 6d 65 6d 62 65 72 | 73 68 69 70 73 20 3d 3d |m_member|ships ==|
|00005830| 20 30 29 20 7b 0a 09 09 | 6d 5f 66 72 65 65 28 2a | 0) {...|m_free(*|
|00005840| 6d 6f 70 74 73 29 3b 0a | 09 09 2a 6d 6f 70 74 73 |mopts);.|..*mopts|
|00005850| 20 3d 20 4e 55 4c 4c 3b | 0a 09 7d 0a 0a 09 72 65 | = NULL;|..}...re|
|00005860| 74 75 72 6e 28 65 72 72 | 6f 72 29 3b 0a 7d 0a 0a |turn(err|or);.}..|
|00005870| 2f 2a 0a 20 2a 20 52 65 | 74 75 72 6e 20 74 68 65 |/*. * Re|turn the|
|00005880| 20 49 50 20 6d 75 6c 74 | 69 63 61 73 74 20 6f 70 | IP mult|icast op|
|00005890| 74 69 6f 6e 73 20 69 6e | 20 72 65 73 70 6f 6e 73 |tions in| respons|
|000058a0| 65 20 74 6f 20 75 73 65 | 72 20 67 65 74 73 6f 63 |e to use|r getsoc|
|000058b0| 6b 6f 70 74 28 29 2e 0a | 20 2a 2f 0a 69 70 5f 67 |kopt()..| */.ip_g|
|000058c0| 65 74 6d 6f 70 74 69 6f | 6e 73 28 6f 70 74 6e 61 |etmoptio|ns(optna|
|000058d0| 6d 65 2c 20 6d 6f 70 74 | 73 2c 20 6d 29 0a 09 69 |me, mopt|s, m)..i|
|000058e0| 6e 74 20 6f 70 74 6e 61 | 6d 65 3b 0a 09 73 74 72 |nt optna|me;..str|
|000058f0| 75 63 74 20 6d 62 75 66 | 20 2a 6d 6f 70 74 73 3b |uct mbuf| *mopts;|
|00005900| 0a 09 73 74 72 75 63 74 | 20 6d 62 75 66 20 2a 2a |..struct| mbuf **|
|00005910| 6d 3b 0a 7b 0a 09 75 5f | 63 68 61 72 20 2a 74 74 |m;.{..u_|char *tt|
|00005920| 6c 3b 0a 09 75 5f 63 68 | 61 72 20 2a 6c 6f 6f 70 |l;..u_ch|ar *loop|
|00005930| 3b 0a 09 73 74 72 75 63 | 74 20 69 6e 5f 61 64 64 |;..struc|t in_add|
|00005940| 72 20 2a 61 64 64 72 3b | 0a 09 73 74 72 75 63 74 |r *addr;|..struct|
|00005950| 20 69 70 5f 6d 6f 70 74 | 69 6f 6e 73 20 2a 69 6d | ip_mopt|ions *im|
|00005960| 6f 3b 0a 09 73 74 72 75 | 63 74 20 69 6e 5f 69 66 |o;..stru|ct in_if|
|00005970| 61 64 64 72 20 2a 69 61 | 3b 0a 0a 09 2a 6d 20 3d |addr *ia|;...*m =|
|00005980| 20 6d 5f 67 65 74 28 4d | 5f 57 41 49 54 2c 20 4d | m_get(M|_WAIT, M|
|00005990| 54 5f 49 50 4d 4f 50 54 | 53 29 3b 0a 0a 09 69 6d |T_IPMOPT|S);...im|
|000059a0| 6f 20 3d 20 28 6d 6f 70 | 74 73 20 3d 3d 20 4e 55 |o = (mop|ts == NU|
|000059b0| 4c 4c 29 20 3f 20 4e 55 | 4c 4c 20 3a 20 6d 74 6f |LL) ? NU|LL : mto|
|000059c0| 64 28 6d 6f 70 74 73 2c | 20 73 74 72 75 63 74 20 |d(mopts,| struct |
|000059d0| 69 70 5f 6d 6f 70 74 69 | 6f 6e 73 20 2a 29 3b 0a |ip_mopti|ons *);.|
|000059e0| 0a 09 73 77 69 74 63 68 | 20 28 6f 70 74 6e 61 6d |..switch| (optnam|
|000059f0| 65 29 20 7b 0a 0a 09 63 | 61 73 65 20 49 50 5f 4d |e) {...c|ase IP_M|
|00005a00| 55 4c 54 49 43 41 53 54 | 5f 49 46 3a 0a 09 09 61 |ULTICAST|_IF:...a|
|00005a10| 64 64 72 20 3d 20 6d 74 | 6f 64 28 2a 6d 2c 20 73 |ddr = mt|od(*m, s|
|00005a20| 74 72 75 63 74 20 69 6e | 5f 61 64 64 72 20 2a 29 |truct in|_addr *)|
|00005a30| 3b 0a 09 09 28 2a 6d 29 | 2d 3e 6d 5f 6c 65 6e 20 |;...(*m)|->m_len |
|00005a40| 3d 20 73 69 7a 65 6f 66 | 28 73 74 72 75 63 74 20 |= sizeof|(struct |
|00005a50| 69 6e 5f 61 64 64 72 29 | 3b 0a 09 09 69 66 20 28 |in_addr)|;...if (|
|00005a60| 69 6d 6f 20 3d 3d 20 4e | 55 4c 4c 20 7c 7c 20 69 |imo == N|ULL || i|
|00005a70| 6d 6f 2d 3e 69 6d 6f 5f | 6d 75 6c 74 69 63 61 73 |mo->imo_|multicas|
|00005a80| 74 5f 69 66 70 20 3d 3d | 20 4e 55 4c 4c 29 0a 09 |t_ifp ==| NULL)..|
|00005a90| 09 09 61 64 64 72 2d 3e | 73 5f 61 64 64 72 20 3d |..addr->|s_addr =|
|00005aa0| 20 49 4e 41 44 44 52 5f | 41 4e 59 3b 0a 09 09 65 | INADDR_|ANY;...e|
|00005ab0| 6c 73 65 20 7b 0a 09 09 | 09 49 46 50 5f 54 4f 5f |lse {...|.IFP_TO_|
|00005ac0| 49 41 28 69 6d 6f 2d 3e | 69 6d 6f 5f 6d 75 6c 74 |IA(imo->|imo_mult|
|00005ad0| 69 63 61 73 74 5f 69 66 | 70 2c 20 69 61 29 3b 0a |icast_if|p, ia);.|
|00005ae0| 09 09 09 61 64 64 72 2d | 3e 73 5f 61 64 64 72 20 |...addr-|>s_addr |
|00005af0| 3d 20 28 69 61 20 3d 3d | 20 4e 55 4c 4c 29 20 3f |= (ia ==| NULL) ?|
|00005b00| 20 49 4e 41 44 44 52 5f | 41 4e 59 0a 09 09 09 09 | INADDR_|ANY.....|
|00005b10| 09 3a 20 49 41 5f 53 49 | 4e 28 69 61 29 2d 3e 73 |.: IA_SI|N(ia)->s|
|00005b20| 69 6e 5f 61 64 64 72 2e | 73 5f 61 64 64 72 3b 0a |in_addr.|s_addr;.|
|00005b30| 09 09 7d 0a 09 09 72 65 | 74 75 72 6e 28 30 29 3b |..}...re|turn(0);|
|00005b40| 0a 0a 09 63 61 73 65 20 | 49 50 5f 4d 55 4c 54 49 |...case |IP_MULTI|
|00005b50| 43 41 53 54 5f 54 54 4c | 3a 0a 09 09 74 74 6c 20 |CAST_TTL|:...ttl |
|00005b60| 3d 20 6d 74 6f 64 28 2a | 6d 2c 20 75 5f 63 68 61 |= mtod(*|m, u_cha|
|00005b70| 72 20 2a 29 3b 0a 09 09 | 28 2a 6d 29 2d 3e 6d 5f |r *);...|(*m)->m_|
|00005b80| 6c 65 6e 20 3d 20 31 3b | 0a 09 09 2a 74 74 6c 20 |len = 1;|...*ttl |
|00005b90| 3d 20 28 69 6d 6f 20 3d | 3d 20 4e 55 4c 4c 29 20 |= (imo =|= NULL) |
|00005ba0| 3f 20 49 50 5f 44 45 46 | 41 55 4c 54 5f 4d 55 4c |? IP_DEF|AULT_MUL|
|00005bb0| 54 49 43 41 53 54 5f 54 | 54 4c 0a 09 09 09 09 20 |TICAST_T|TL..... |
|00005bc0| 20 20 20 20 3a 20 69 6d | 6f 2d 3e 69 6d 6f 5f 6d |    : im|o->imo_m|
|00005bd0| 75 6c 74 69 63 61 73 74 | 5f 74 74 6c 3b 0a 09 09 |ulticast|_ttl;...|
|00005be0| 72 65 74 75 72 6e 28 30 | 29 3b 0a 0a 09 63 61 73 |return(0|);...cas|
|00005bf0| 65 20 49 50 5f 4d 55 4c | 54 49 43 41 53 54 5f 4c |e IP_MUL|TICAST_L|
|00005c00| 4f 4f 50 3a 0a 09 09 6c | 6f 6f 70 20 3d 20 6d 74 |OOP:...l|oop = mt|
|00005c10| 6f 64 28 2a 6d 2c 20 75 | 5f 63 68 61 72 20 2a 29 |od(*m, u|_char *)|
|00005c20| 3b 0a 09 09 28 2a 6d 29 | 2d 3e 6d 5f 6c 65 6e 20 |;...(*m)|->m_len |
|00005c30| 3d 20 31 3b 0a 09 09 2a | 6c 6f 6f 70 20 3d 20 28 |= 1;...*|loop = (|
|00005c40| 69 6d 6f 20 3d 3d 20 4e | 55 4c 4c 29 20 3f 20 49 |imo == N|ULL) ? I|
|00005c50| 50 5f 44 45 46 41 55 4c | 54 5f 4d 55 4c 54 49 43 |P_DEFAUL|T_MULTIC|
|00005c60| 41 53 54 5f 4c 4f 4f 50 | 0a 09 09 09 09 20 20 20 |AST_LOOP|.....   |
|00005c70| 20 20 20 3a 20 69 6d 6f | 2d 3e 69 6d 6f 5f 6d 75 |   : imo|->imo_mu|
|00005c80| 6c 74 69 63 61 73 74 5f | 6c 6f 6f 70 3b 0a 09 09 |lticast_|loop;...|
|00005c90| 72 65 74 75 72 6e 28 30 | 29 3b 0a 0a 09 64 65 66 |return(0|);...def|
|00005ca0| 61 75 6c 74 3a 0a 09 09 | 72 65 74 75 72 6e 28 45 |ault:...|return(E|
|00005cb0| 4f 50 4e 4f 54 53 55 50 | 50 29 3b 0a 09 7d 0a 7d |OPNOTSUP|P);..}.}|
|00005cc0| 0a 0a 2f 2a 0a 20 2a 20 | 44 69 73 63 61 72 64 20 |../*. * |Discard |
|00005cd0| 74 68 65 20 49 50 20 6d | 75 6c 74 69 63 61 73 74 |the IP m|ulticast|
|00005ce0| 20 6f 70 74 69 6f 6e 73 | 2e 0a 20 2a 2f 0a 69 70 | options|.. */.ip|
|00005cf0| 5f 66 72 65 65 6d 6f 70 | 74 69 6f 6e 73 28 6d 6f |_freemop|tions(mo|
|00005d00| 70 74 73 29 0a 09 73 74 | 72 75 63 74 20 6d 62 75 |pts)..st|ruct mbu|
|00005d10| 66 20 2a 6d 6f 70 74 73 | 3b 0a 7b 0a 09 73 74 72 |f *mopts|;.{..str|
|00005d20| 75 63 74 20 69 70 5f 6d | 6f 70 74 69 6f 6e 73 20 |uct ip_m|options |
|00005d30| 2a 69 6d 6f 3b 0a 09 69 | 6e 74 20 69 3b 0a 0a 09 |*imo;..i|nt i;...|
|00005d40| 69 66 20 28 6d 6f 70 74 | 73 20 21 3d 20 4e 55 4c |if (mopt|s != NUL|
|00005d50| 4c 29 20 7b 0a 09 09 69 | 6d 6f 20 3d 20 6d 74 6f |L) {...i|mo = mto|
|00005d60| 64 28 6d 6f 70 74 73 2c | 20 73 74 72 75 63 74 20 |d(mopts,| struct |
|00005d70| 69 70 5f 6d 6f 70 74 69 | 6f 6e 73 20 2a 29 3b 0a |ip_mopti|ons *);.|
|00005d80| 09 09 66 6f 72 20 28 69 | 20 3d 20 30 3b 20 69 20 |..for (i| = 0; i |
|00005d90| 3c 20 69 6d 6f 2d 3e 69 | 6d 6f 5f 6e 75 6d 5f 6d |< imo->i|mo_num_m|
|00005da0| 65 6d 62 65 72 73 68 69 | 70 73 3b 20 2b 2b 69 29 |embershi|ps; ++i)|
|00005db0| 0a 09 09 09 69 6e 5f 64 | 65 6c 6d 75 6c 74 69 28 |....in_d|elmulti(|
|00005dc0| 69 6d 6f 2d 3e 69 6d 6f | 5f 6d 65 6d 62 65 72 73 |imo->imo|_members|
|00005dd0| 68 69 70 5b 69 5d 29 3b | 0a 09 09 6d 5f 66 72 65 |hip[i]);|...m_fre|
|00005de0| 65 28 6d 6f 70 74 73 29 | 3b 0a 09 7d 0a 7d 0a 0a |e(mopts)|;..}.}..|
|00005df0| 2f 2a 0a 20 2a 20 52 6f | 75 74 69 6e 65 20 63 61 |/*. * Ro|utine ca|
|00005e00| 6c 6c 65 64 20 66 72 6f | 6d 20 69 70 5f 6f 75 74 |lled fro|m ip_out|
|00005e10| 70 75 74 28 29 20 74 6f | 20 6c 6f 6f 70 20 62 61 |put() to| loop ba|
|00005e20| 63 6b 20 61 20 63 6f 70 | 79 20 6f 66 20 61 6e 20 |ck a cop|y of an |
|00005e30| 49 50 20 6d 75 6c 74 69 | 63 61 73 74 0a 20 2a 20 |IP multi|cast. * |
|00005e40| 70 61 63 6b 65 74 20 74 | 6f 20 74 68 65 20 69 6e |packet t|o the in|
|00005e50| 70 75 74 20 71 75 65 75 | 65 20 6f 66 20 61 20 73 |put queu|e of a s|
|00005e60| 70 65 63 69 66 69 65 64 | 20 69 6e 74 65 72 66 61 |pecified| interfa|
|00005e70| 63 65 2e 20 20 4e 6f 74 | 65 20 74 68 61 74 20 74 |ce.  Not|e that t|
|00005e80| 68 69 73 0a 20 2a 20 63 | 61 6c 6c 73 20 74 68 65 |his. * c|alls the|
|00005e90| 20 6f 75 74 70 75 74 20 | 72 6f 75 74 69 6e 65 20 | output |routine |
|00005ea0| 6f 66 20 74 68 65 20 6c | 6f 6f 70 62 61 63 6b 20 |of the l|oopback |
|00005eb0| 22 64 72 69 76 65 72 22 | 2c 20 62 75 74 20 77 69 |"driver"|, but wi|
|00005ec0| 74 68 20 61 6e 20 69 6e | 74 65 72 66 61 63 65 0a |th an in|terface.|
|00005ed0| 20 2a 20 70 6f 69 6e 74 | 65 72 20 74 68 61 74 20 | * point|er that |
|00005ee0| 6d 69 67 68 74 20 4e 4f | 54 20 62 65 20 26 6c 6f |might NO|T be &lo|
|00005ef0| 69 66 20 2d 2d 20 65 61 | 73 69 65 72 20 74 68 61 |if -- ea|sier tha|
|00005f00| 6e 20 72 65 70 6c 69 63 | 61 74 69 6e 67 20 74 68 |n replic|ating th|
|00005f10| 61 74 20 63 6f 64 65 20 | 68 65 72 65 2e 0a 20 2a |at code |here.. *|
|00005f20| 2f 0a 69 70 5f 6d 6c 6f | 6f 70 62 61 63 6b 28 69 |/.ip_mlo|opback(i|
|00005f30| 66 70 2c 20 6d 2c 20 64 | 73 74 29 0a 09 73 74 72 |fp, m, d|st)..str|
|00005f40| 75 63 74 20 69 66 6e 65 | 74 20 2a 69 66 70 3b 0a |uct ifne|t *ifp;.|
|00005f50| 09 72 65 67 69 73 74 65 | 72 20 73 74 72 75 63 74 |.registe|r struct|
|00005f60| 20 6d 62 75 66 20 2a 6d | 3b 0a 09 72 65 67 69 73 | mbuf *m|;..regis|
|00005f70| 74 65 72 20 73 74 72 75 | 63 74 20 73 6f 63 6b 61 |ter stru|ct socka|
|00005f80| 64 64 72 5f 69 6e 20 2a | 64 73 74 3b 0a 7b 0a 09 |ddr_in *|dst;.{..|
|00005f90| 72 65 67 69 73 74 65 72 | 20 73 74 72 75 63 74 20 |register| struct |
|00005fa0| 69 70 20 2a 69 70 3b 0a | 09 73 74 72 75 63 74 20 |ip *ip;.|.struct |
|00005fb0| 6d 62 75 66 20 2a 63 6f | 70 79 6d 3b 0a 0a 09 63 |mbuf *co|pym;...c|
|00005fc0| 6f 70 79 6d 20 3d 20 6d | 5f 63 6f 70 79 28 6d 2c |opym = m|_copy(m,|
|00005fd0| 20 30 2c 20 4d 5f 43 4f | 50 59 41 4c 4c 29 3b 0a | 0, M_CO|PYALL);.|
|00005fe0| 09 69 66 20 28 63 6f 70 | 79 6d 20 21 3d 20 4e 55 |.if (cop|ym != NU|
|00005ff0| 4c 4c 29 20 7b 0a 09 09 | 2f 2a 0a 09 09 20 2a 20 |LL) {...|/*... * |
|00006000| 57 65 20 64 6f 6e 27 74 | 20 62 6f 74 68 65 72 20 |We don't| bother |
|00006010| 74 6f 20 66 72 61 67 6d | 65 6e 74 20 69 66 20 74 |to fragm|ent if t|
|00006020| 68 65 20 49 50 20 6c 65 | 6e 67 74 68 20 69 73 20 |he IP le|ngth is |
|00006030| 67 72 65 61 74 65 72 0a | 09 09 20 2a 20 74 68 61 |greater.|.. * tha|
|00006040| 6e 20 74 68 65 20 69 6e | 74 65 72 66 61 63 65 27 |n the in|terface'|
|00006050| 73 20 4d 54 55 2e 20 20 | 43 61 6e 20 74 68 69 73 |s MTU.  |Can this|
|00006060| 20 70 6f 73 73 69 62 6c | 79 20 6d 61 74 74 65 72 | possibl|y matter|
|00006070| 3f 0a 09 09 20 2a 2f 0a | 09 09 69 70 20 3d 20 6d |?... */.|..ip = m|
|00006080| 74 6f 64 28 63 6f 70 79 | 6d 2c 20 73 74 72 75 63 |tod(copy|m, struc|
|00006090| 74 20 69 70 20 2a 29 3b | 0a 09 09 69 70 2d 3e 69 |t ip *);|...ip->i|
|000060a0| 70 5f 6c 65 6e 20 3d 20 | 68 74 6f 6e 73 28 28 75 |p_len = |htons((u|
|000060b0| 5f 73 68 6f 72 74 29 69 | 70 2d 3e 69 70 5f 6c 65 |_short)i|p->ip_le|
|000060c0| 6e 29 3b 0a 09 09 69 70 | 2d 3e 69 70 5f 6f 66 66 |n);...ip|->ip_off|
|000060d0| 20 3d 20 68 74 6f 6e 73 | 28 28 75 5f 73 68 6f 72 | = htons|((u_shor|
|000060e0| 74 29 69 70 2d 3e 69 70 | 5f 6f 66 66 29 3b 0a 09 |t)ip->ip|_off);..|
|000060f0| 09 69 70 2d 3e 69 70 5f | 73 75 6d 20 3d 20 30 3b |.ip->ip_|sum = 0;|
|00006100| 0a 09 09 69 70 2d 3e 69 | 70 5f 73 75 6d 20 3d 20 |...ip->i|p_sum = |
|00006110| 69 6e 5f 63 6b 73 75 6d | 28 63 6f 70 79 6d 2c 20 |in_cksum|(copym, |
|00006120| 69 70 2d 3e 69 70 5f 68 | 6c 20 3c 3c 20 32 29 3b |ip->ip_h|l << 2);|
|00006130| 0a 09 09 28 76 6f 69 64 | 29 20 6c 6f 6f 75 74 70 |...(void|) looutp|
|00006140| 75 74 28 69 66 70 2c 20 | 63 6f 70 79 6d 2c 20 28 |ut(ifp, |copym, (|
|00006150| 73 74 72 75 63 74 20 73 | 6f 63 6b 61 64 64 72 20 |struct s|ockaddr |
|00006160| 2a 29 64 73 74 29 3b 0a | 09 7d 0a 7d 0a 0a 23 65 |*)dst);.|.}.}..#e|
|00006170| 6e 64 69 66 20 4d 55 4c | 54 49 43 41 53 54 0a 0a |ndif MUL|TICAST..|
|00006180| 69 70 5f 70 63 62 6f 70 | 74 73 28 70 63 62 6f 70 |ip_pcbop|ts(pcbop|
|00006190| 74 2c 20 6d 29 0a 09 73 | 74 72 75 63 74 20 6d 62 |t, m)..s|truct mb|
|000061a0| 75 66 20 2a 2a 70 63 62 | 6f 70 74 3b 0a 09 72 65 |uf **pcb|opt;..re|
|000061b0| 67 69 73 74 65 72 20 73 | 74 72 75 63 74 20 6d 62 |gister s|truct mb|
|000061c0| 75 66 20 2a 6d 3b 0a 7b | 0a 09 72 65 67 69 73 74 |uf *m;.{|..regist|
|000061d0| 65 72 20 63 6e 74 2c 20 | 6f 70 74 6c 65 6e 3b 0a |er cnt, |optlen;.|
|000061e0| 09 72 65 67 69 73 74 65 | 72 20 75 5f 63 68 61 72 |.registe|r u_char|
|000061f0| 20 2a 63 70 3b 0a 09 75 | 5f 63 68 61 72 20 6f 70 | *cp;..u|_char op|
|00006200| 2e 2f 73 79 73 2e 62 73 | 64 2f 6e 65 74 69 6e 65 |./sys.bs|d/netine|
|00006210| 74 2f 69 66 5f 65 74 68 | 65 72 2e 63 00 00 00 00 |t/if_eth|er.c....|
|00006220| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006230| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006240| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006250| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006260| 00 00 00 00 20 20 20 34 | 34 34 20 00 20 20 20 20 |....   4|44 .    |
|00006270| 31 36 20 00 20 20 20 20 | 20 30 20 00 20 20 20 20 |16 .    | 0 .    |
|00006280| 20 20 34 35 35 34 32 20 | 20 34 34 31 30 34 30 35 |  45542 | 4410405|
|00006290| 30 37 36 20 20 31 31 32 | 30 35 00 20 00 00 00 00 |076  112|05. ....|
|000062a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000062b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000062c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000062d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|000062f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006300| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006310| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006320| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00006370| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006380| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006390| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000063a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000063b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000063c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000063d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000063e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000063f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
+--------+-------------------------+-------------------------+--------+--------+
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