⭐ 欢迎来到虫虫下载站! | 📦 资源下载 📁 资源专辑 ℹ️ 关于我们
⭐ 虫虫下载站

📄 lisa-vi-paper.ps

📁 早期freebsd实现
💻 PS
📖 第 1 页 / 共 5 页
字号:
1928 X(mail)s600 X659 Y648 X(touch)s888 X($LAMEREPORT)s600 X732 Y648 X(NAME="")s600 X805 Y648 X(while)s888 X(read)s1088 X(DOMAIN)s1368 X(IPADDR)s1648 X(;)s1728 X(do)s600 X878 Y968 X(#)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s3128 X(-)s3168 X(-)s3208 X(-)s3248 X(-)s3288 X(-)s3328 X(-)s600 X951 Y968 X(#)s1048 X(Echo)s1248 X(args)s1448 X(if)s1568 X(verbose)s600 X1024 Y968 X(#)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s3128 X(-)s3168 X(-)s3208 X(-)s3248 X(-)s3288 X(-)s3328 X(-)s600 X1097 Y968 X(if)s1088 X([)s1168 X($VERBOSE)s1528 X(-eq)s1688 X(1)s1768 X(])s1848 X(;)s1928 X(then)s600 X1170 Y1288 X(echo)s1488 X($IPADDR)s1808 X("is)s1968 X(a)s2048 X(potential)s2448 X(lame)s2648 X(delegation)s3088 X(for")s3288 X($DOMAIN)s600 X1243 Y968 X(fi)s600 X1366 Y744 Xf.R 10 Z(The)s871 X(next)s1009 X(thing)s1169 X(we)s1270 X(do)s1359 X(is)s1427 X(lookup)s1634 X(the)s1739 X(SOA)s1895 X(record)s2088 X(for)s2188 X(the)s2294 X(domain)s2494 X(.)s2557 X(We)s2674 X(do)s2764 X(this)s2885 X(so)s2968 X(that)s3093 X(we)s3195 X(can)s3312 X(fetch)s3470 X(an)s3557 X(osten-)s600 X1439 Y(sibly)s758 X(of\256cial)s976 X(e)s1006 X(-mail)s1176 X(address)s1404 X(to)s1483 X(which)s1673 X(to)s1752 X(send)s1901 X(the)s2010 X(mail)s2130 X(.)s2196 X(In)s2278 X(our)s2393 X(experience)s2710 X(the)s2819 X(e)s2849 X(-mail)s3018 X(address)s3245 X(listed)s3418 X(in)s3497 X(an)s3587 X(SOA)s600 X1512 Y(record)s793 X(often)s953 X(is)s1021 X(syntactically)s1384 X(incorrect,)s1662 X(or)s1740 X(contains)s1986 X(some)s2150 X(unusable)s2410 X(address)s2610 X(.)s2672 X(The)s2799 X(script)s2972 X(isn't)s3115 X(too)s3224 X(careful)s3434 X(about)s3606 X(this,)s600 X1585 Y(and)s718 X(so)s799 X(we)s899 X(end)s1017 X(up)s1105 X(seeing)s1298 X(a)s1350 X(fair)s1465 X(number)s1690 X(of)s1767 X(bounces)s2007 X(which)s2192 X(we)s2292 X(then)s2429 X(handle)s2629 X(ourselves)s2881 X(.)s600 X1687 Y728 Xf.CW 10 Z(#)s768 X(-)s808 X(-)s848 X(-)s888 X(-)s928 X(-)s968 X(-)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s600 X1760 Y728 X(#)s808 X(Lookup)s1088 X(the)s1248 X(SOA)s1408 X(record)s1688 X(form)s1888 X($DOMAIN)s2168 X(.)s2288 X(A)s2368 X(really)s2648 X(broken)s2928 X(name)s600 X1833 Y728 X(#)s808 X(server)s1088 X(many)s1288 X(have)s1488 X(more)s1688 X(than)s1888 X(one)s2048 X(SOA)s2208 X(for)s2368 X(a)s2448 X(domain,)s2768 X(so)s2888 X(exit)s600 X1906 Y728 X(#)s808 X(after)s1048 X(finding)s1368 X(the)s1528 X(first)s1768 X(one)s1888 X(.)s2008 X(Send)s2208 X(it)s2328 X(to)s2448 X(the)s2608 X(local)s2848 X(hostmaster)s600 X1979 Y728 X(#)s808 X(if)s928 X(we)s1048 X(cannot)s1328 X(find)s1528 X(the)s1688 X(proper)s1968 X(one)s2088 X(.)s600 X2052 Y728 X(#)s768 X(-)s808 X(-)s848 X(-)s888 X(-)s928 X(-)s968 X(-)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s600 X2125 Y728 X(if)s848 X([)s928 X($VERBOSE)s1288 X(-eq)s1448 X(1)s1528 X(])s1608 X(;)s1688 X(then)s600 X2198 Y1048 X(echo)s1248 X("Looking)s1608 X(up)s1728 X(the)s1888 X(hostmaster)s2328 X(for)s2488 X($DOMAIN")s600 X2271 Y728 X(fi)s600 X2344 Y728 X(HOSTMASTER=`qu)s1288 X(ery)s1448 X(-h)s1568 X($DOMAIN)s1888 X(-t)s2008 X(SOA)s2168 X(2>)s2288 X(/dev/null)s2688 X(|)s2768 X(\\)s600 X2417 Y1488 X(awk)s1648 X('/mail)s1928 X(addr/)s2168 X({)s2248 X(print)s2488 X($4)s2608 X(;)s2688 X(exit)s2888 X(}')s3008 X(|)s3088 X(sed)s3248 X(-e)s3368 X('s/)s3488 X(./@/'`)s600 X2490 Y728 X(NAME=`host)s1168 X($IPADDR)s1488 X(2>)s1608 X(/dev/null`)s600 X2563 Y728 X(if)s848 X([)s928 X(-z)s1048 X(""$HOSTMASTER)s1608 X(])s1688 X(;)s1768 X(then)s600 X2636 Y1048 X(if)s1168 X([)s1248 X(-z)s1368 X(""$NAME)s1688 X(])s1768 X(;)s1848 X(then)s600 X2709 Y1368 X(HOSTMASTER="ho)s1928 X(stmaster")s600 X2782 Y1048 X(else)s600 X2855 Y1368 X(HOSTMASTER="po)s1928 X(stmaster@"$NAME)s600 X2928 Y1048 X(fi)s600 X3001 Y728 X(fi)s600 X3124 Y744 Xf.R 10 Z(This)s887 X(is)s956 X(one)s1076 X(of)s1155 X(the)s1261 X(tests)s1405 X(we)s1507 X(make)s1676 X(to)s1752 X(weed)s1917 X(out)s2026 X(the)s2132 X(spurious)s2382 X(lame)s2538 X(delegations)s2843 X(.)s2907 X(There)s3088 X(have)s3239 X(been)s3390 X(cases)s3557 X(where)s600 X3197 Y(a)s654 X(parent)s845 X(server)s1032 X(has)s1145 X(listed)s1315 X(another)s1539 X(nameserver)s1871 X(as)s1951 X(authoritative)s2314 X(for)s2415 X(a)s2469 X(domain,)s2709 X(yet)s2814 X(that)s2938 X(actual)s3122 X(server)s3308 X(does)s3453 X(not)s3561 X(report)s600 X3270 Y(itself)s757 X(as)s835 X(authoritative)s1196 X(for)s1295 X(a)s1347 X(domain)s1547 X(.)s1608 X(This)s1749 X(is)s1817 X(still)s1942 X(a)s1995 X(problem,)s2257 X(and)s2376 X(in)s2451 X(the)s2556 X(future)s2738 X(we)s2839 X(should)s3039 X(do)s3128 X(something)s3429 X(better)s3605 X(here)s600 X3343 Y(than)s737 X(just)s856 X(continue)s1108 X(\(e)s1160 X(.g)s1210 X(.,)s1266 X(send)s1410 X(mail)s1552 X(to)s1626 X(the)s1730 X(parent)s1919 X(domain)s2141 X(telling)s2335 X(them)s2491 X(about)s2661 X(the)s2765 X(problem\))s3009 X(.)s600 X3445 Y728 Xf.CW 10 Z(#)s768 X(-)s808 X(-)s848 X(-)s888 X(-)s928 X(-)s968 X(-)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s600 X3518 Y728 X(#)s808 X(Find)s1008 X(the)s1168 X(name)s1368 X(associated)s1808 X(with)s2008 X(IP)s2128 X(address)s2448 X($IPADDR)s2728 X(.)s2848 X(Query)s600 X3591 Y728 X(#)s808 X(the)s968 X(nameserver)s1408 X(at)s1528 X(that)s1728 X(address:)s2128 X(If)s2248 X(it)s2368 X(responds)s2728 X(listing)s600 X3664 Y728 X(#)s808 X(itself)s1088 X(as)s1208 X(a)s1288 X(domain)s1568 X(namserver,)s2008 X(then)s2208 X(it)s2328 X(is)s2448 X(lame;)s2688 X(if)s2808 X(it)s2928 X(isn't)s600 X3737 Y728 X(#)s808 X(in)s928 X(the)s1088 X(list,)s1328 X(then)s1528 X(perhaps)s1848 X(the)s2008 X(lame)s2208 X(delegation)s2648 X(alert)s2888 X(was)s600 X3810 Y728 X(#)s808 X(spurious)s1128 X(.)s600 X3883 Y728 X(#)s768 X(-)s808 X(-)s848 X(-)s888 X(-)s928 X(-)s968 X(-)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s600 X3956 Y728 X(if)s848 X([)s928 X($VERBOSE)s1288 X(-eq)s1448 X(1)s1528 X(])s1608 X(;)s1688 X(then)s600 X4029 Y1048 X(echo)s1248 X("Making)s1568 X(sure)s1768 X(that)s1968 X($IPADDR)s2288 X(is)s2408 X(listed)s2688 X(as)s2808 X(a)s2888 X(NS)s3008 X(for)s3168 X($DOMAIN")s600 X4102 Y728 X(fi)s600 X4175 Y728 X(if)s848 X([)s928 X(-n)s1048 X(""$NAME)s1368 X(])s1448 X(;)s1528 X(then)s600 X4248 Y1048 X(query)s1288 X(-n)s1408 X($IPADDR)s1728 X(-h)s1848 X($DOMAIN)s2168 X(2>&1)s2368 X(|)s2448 X(grep)s2648 X("domain)s2968 X(name")s3208 X(|)s3288 X(\\)s600 X4321 Y2568 X(grep)s2768 X(-i)s2888 X($NAME)s3128 X(>)s3208 X(/dev/null)s600 X4394 Y1048 X(if)s1168 X([)s1248 X($?)s1368 X(-eq)s1528 X(1)s1608 X(-a)s1728 X($VERBOSE)s2088 X(-eq)s2248 X(1)s2328 X(])s2408 X(;)s2488 X(then)s600 X4467 Y1368 X(echo)s1568 X($NAME)s1808 X(does)s2008 X(not)s2168 X(seem)s2368 X(to)s2488 X(be)s2608 X(a)s2688 X(nameserver)s3128 X(for)s3288 X($DOMAIN)s600 X4540 Y1368 X(continue)s600 X4613 Y1048 X(fi)s600 X4686 Y728 X(fi)s600 X4967 Yf.B 10 Z(1992)s754 X(LISA)s931 X(VI)s1027 X(\261)s1082 X(October)s1338 X(19)s1404 X(-23,)s1531 X(1992)s1685 X(\261)s1740 X(Long)s1909 X(Beach,)s2122 X(CA)s3621 X(131)s5280 Ypagebot%%Page: 132 6pagetopstdencoding /NTimes-Bold /Times-Bold RE/f.B /NTimes-Bold findfont def f.B 10 Z360 X215 Y(Dealing)s601 X(with)s749 X(Lame)s934 X(Delegations)s360 X448 Y504 Xstdencoding /NTimes-Roman /Times-Roman RE/f.R /NTimes-Roman findfont def f.R 10 Z(We)s620 X(query)s794 X(the)s899 X(listed)s1068 X(nameserver)s1399 X(twice)s1545 X(.)s1607 X(Even)s1767 X(in)s1842 X(the)s1947 X(case)s2086 X(of)s2164 X(a)s2218 X(lame)s2373 X(delegation,)s2693 X(it)s2755 X(may)s2894 X(return)s3077 X(with)s3220 X(authorita-)s360 X521 Y(tive)s485 X(data)s621 X(on)s711 X(the)s817 X(\256rst)s945 X(query)s1120 X(since)s1282 X(it)s1344 X(may)s1483 X(have)s1633 X(just)s1754 X(made)s1923 X(the)s2029 X(query)s2204 X(to)s2280 X(an)s2367 X(authoritative)s2730 X(nameserver)s3038 X(.)s3100 X(If)s3167 X(it)s3228 X(is)s3296 X(a)s3349 X(lame)s360 X594 Y(delegation,)s678 X(then)s815 X(the)s919 X

⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -