dnstop/0000775000175100017510000000000014661103220010156 5ustar mhmhdnstop/inX_addr.h0000664000175100017510000000140614661103220012060 0ustar mhmh #ifndef INX_ADDR_H #define INX_ADDR_H typedef union { #if USE_IPV6 struct in6_addr in6; #endif struct { #if USE_IPV6 struct in_addr pad0; struct in_addr pad1; struct in_addr pad2; #endif struct in_addr in4; } _; } inX_addr; extern int inXaddr_version(const inX_addr *); extern const char * inXaddr_ntop(const inX_addr *, char *, socklen_t len); extern int inXaddr_pton(const char *, inX_addr *); extern unsigned int inXaddr_hash(const inX_addr *, unsigned int bits); extern int inXaddr_cmp(const inX_addr *a, const inX_addr *b); extern inX_addr inXaddr_mask (const inX_addr *a, const inX_addr *mask); extern int inXaddr_assign_v4(inX_addr *, const struct in_addr *); extern int inXaddr_assign_v6(inX_addr *, const struct in6_addr *); #endif /* INX_ADDR_H */ dnstop/CHANGES0000664000175100017510000002027314661103220011155 0ustar mhmh2014/09/12 Duane Wessels Added 'new-gtlds' filter, which includes only queries for names ending with one of the new (2013/2014) generic TLDs. This may be useful to find hosts/servers using internal names which may collide with new gTLDs once they become active. If you use short (not fully qualified) names internally you may be uknownlying relying on root (or other) name servers to return NXDOMAIN for them. If so, "you're gonna have a bad time." Along with this new feature, TLD lists are now hashed in the code for faster lookups. 2012/11/30 Duane Wessels Added more entries to the table of known query type names (HINFO, AFSDB, PX, SSHFP, NSEC3, NSEC3PARAM, TLSA, DLV). 2012/10/15 Duane Wessels The 'refused' filter only works on responses, which are not processed by default. Now, if the 'refused' filter is specified, dnstop will automatically process responses and ignore queries. 2012/06/11 Duane Wessels Added "qtype-any" filter for displaying ANY queries which are now fashionable in DNS based attacks. 2011/05/02 Duane Wessels Anand Buddhev pointed out that LDFLAGS= is missing from Makefile.in. Also updated known_tlds.h. 2011/01/27 Duane Wessels Fixed some portability bugs (OpenBSD, gmake 3.82) and other minor bugs. Added a feature (-n option) to restrict counting to a given query name. 2011/01/05 Duane Wessels Found a fixed a few problems after spending some quality time looking at the code. 1) Hash table performance was terrible and has been improved. The hash table size is now configurable via command line option. 2) Some things were double-counted when both -Q and -R were given. 3) Added cumulative percentage totals to the tables 4) Added -X option to disable the source+queryname tables, which could consume a lot of memory. 5) Imported "inX_addr" mini-library for storing IPv4/IPv6 addresses. 2010/12/27 Duane Wessels Fixed a bug where if stdout was a TTY but stdin was not a TTY, then dnstop would enter a loop on keyboard input and consume 100% CPU. Now it checks that stdin is a TTY as well. 2009/01/28 Duane Wessels Added "refused" filter to show only responses that were refused. 2008/03/21 Duane Wessels Added some standard Makefile variables that could be locally modified by package maintainers. Added -v (version) command line option. Updated list of known TLDs. 2008/03/20 Dave Plonka Fixed a bug that cause dnstop to Memory fault when processing a DNS packet greater than PCAP_SNAPLEN (previously 1460) bytes in size. Raised PCAP_SNAPLEN to 65535 to avoid truncating large DNS packets. Eliminated unnecessary stack buffers and memcpy calls when handling packets. 2007/05/10 Duane Wessels Replaced unlicensed "SuperFastHash" with public domain "lookup3.c" by Bob Jenkins, from http://www.burtleburtle.net/bob/c/lookup3.c 2007/03/02 Duane Wessels Added Rcode table 2007/02/20 Duane Wessels Internal redesign. Removed the data structures for storing 1st, 2nd, and 3rd level query name stats and replaced them with an array supporting collection of up to 9 domain components. Replaced the -2 and -3 command line options with -l N where N is a number from 1 to 9. Higher values of N give more details but also use more memory and CPU. Rewrote the display code. Columns are now sized automatically depending on the width of the values being displayed, and the maximum width of the terminal. 2007/02/20 Duane Wessels Bugfix: The combined "sources + queryname" tables were counting incorrectly due to the use of in_addr_cmp() in the hash table comparison function. We no longer store IP addresses as struct in_addr. We store them as IPv6 addresses and the comparison function always returned 0 for v4 addrs. 2007/02/19 Florian Forster Arithmetic on void pointers is not well defined and Solaris complains. Cast to char pointer instead. 2007/02/19 Dirk Jagdmann Added USE_IP6 define so that v6-code can be disabled somewhat easily. 2007/02/19 Florian Forster Portability fixes for IPv6-related code as well as some Solaris and Linux quirks. 2007/02/19 Duane Wessels Updated rfc1035NameUnpack() and fixed a buffer overflow bug. 2007/02/19 Tom moof Spindler There's two more occurences of c99ish "declare local vars in the middle of a block". 2007/01/05 Misc Bugfixes Some variables were declared in the middle of functions. GCC tolerates this, but other compilers (Solaris) do not. Bug in switch statement. break was before return (Bill Richter). Added checks for "__GLIBC__" and "__GNU__" preprocessor symbols for Linux compatibility (Petr Salinger). 2006/12/01 Florian Forster and Duane Wessels Incorporated Florian's patch to support IPv6. Both v4 and v6 addresses are now stored in an in6_addr structure, which means increased memory usage. The old default bpf program ("udp dst port 53 and udp[10:2] & 0x8000 = 0") didn't work on IPv6 packets, so it is now just "udp port 53". Added -Q and -R command line options to select counting of queries, replies, or both. The default is to count only queries. Added -4 and -6 command line options to select counting of IPv4-addressed messages, IPv6-addressed messages, or both. The default is to count both. 2006/11/21 Duane Wessels Changed most of the linked lists to hash tables. This should also result in less CPU usage on busy nameservers. 2006/11/20 John Morrissey A patch to use setitimer and SIGALRM for updating the display. On busy nameservers this results in less CPU usage because the display is updated less often. The redraw interval can be specified with the -r command line option. 2006/05/17 Max Horn A few fixes for OS X. 1) select()ing on a pcap FD doesn't always work. Advice from tcpdump mailing list archive is to put it into non-blocking mode and ignore the select() return value. 2) Added $(LDFLAGS) to link command line in Makefile to have dnstop linked with specific libraries. LDFLAGS will be picked up from the environment. 3) OS X needs to #include 2006/04/24 Duane Wessels Adriaan Peeters reported that the list of known TLDs is out-of-date. In particular, the .EU domain is not in the list. 2005/04/05 Duane Wessels Mark Foster found a bug with the source+SLD list. It was being updated for 3RD-level domain names as well. Mark also suggested that the '@' key should display the source+SLD screen, just as '3' and '#' work for 3RD-level. 2005/01/21 Sam Norris Added support for third-level domain statistics. Use the -t command line option to enable collection of 3rd-level stats, and use '3' while running to display them. Note that enabling 3rd-level stats collection does not automatically also enable 2nd-level stats. 2005/01/13 Duane Wessels Added a non-interactive mode. If you specify a savefile and stdout is not a TTY, dnstop prints each table at the end. 2004/03/09 Duane Wessels Added filter support. Filters can be used to restrict the input stream to queries with certain characteristics. The currently defined filters are: unknown-tlds Only includes queries for TLDs that are bogus. Useful for identifying hosts/servers that leak queries for things like "localhost" or "workgroup." A-for-A Only includes A queries for names that are already IP addresses. Certain Microsoft Windows DNS servers have a known bug that forward these queries. rfc1918-ptr PTR queries for addresses in RFC1918 space. These should never leak from inside an organization. 2003/11/13 Mark Foster Added 'c' to display options. This screen will combine the source and sld fields to show "who is querying for what" - reason: we see alot of duplicate querys for whatever reason. This will help separate the legitimate queries from the broken resolvers, etc. See http://www.circleid.com/article/102_0_1_0_C/ for more about that. dnstop/install-sh0000775000175100017510000003160014661103220012162 0ustar mhmh#!/bin/sh # install - install a program, script, or datafile scriptversion=2006-10-14.15 # This originates from X11R5 (mit/util/scripts/install.sh), which was # later released in X11R6 (xc/config/util/install.sh) with the # following copyright and license. # # Copyright (C) 1994 X Consortium # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to # deal in the Software without restriction, including without limitation the # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or # sell copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- # TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # # Except as contained in this notice, the name of the X Consortium shall not # be used in advertising or otherwise to promote the sale, use or other deal- # ings in this Software without prior written authorization from the X Consor- # tium. # # # FSF changes to this file are in the public domain. # # Calling this script install-sh is preferred over install.sh, to prevent # `make' implicit rules from creating a file called install from it # when there is no Makefile. # # This script is compatible with the BSD install script, but was written # from scratch. nl=' ' IFS=" "" $nl" # set DOITPROG to echo to test this script # Don't use :- since 4.3BSD and earlier shells don't like it. doit="${DOITPROG-}" if test -z "$doit"; then doit_exec=exec else doit_exec=$doit fi # Put in absolute file names if you don't have them in your path; # or use environment vars. mvprog="${MVPROG-mv}" cpprog="${CPPROG-cp}" chmodprog="${CHMODPROG-chmod}" chownprog="${CHOWNPROG-chown}" chgrpprog="${CHGRPPROG-chgrp}" stripprog="${STRIPPROG-strip}" rmprog="${RMPROG-rm}" mkdirprog="${MKDIRPROG-mkdir}" posix_glob= posix_mkdir= # Desired mode of installed file. mode=0755 chmodcmd=$chmodprog chowncmd= chgrpcmd= stripcmd= rmcmd="$rmprog -f" mvcmd="$mvprog" src= dst= dir_arg= dstarg= no_target_directory= usage="Usage: $0 [OPTION]... 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In this case, the final cleanup might fail but the new # file should still install successfully. { if test -f "$dst"; then $doit $rmcmd -f "$dst" 2>/dev/null \ || { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null \ && { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }; }\ || { echo "$0: cannot unlink or rename $dst" >&2 (exit 1); exit 1 } else : fi } && # Now rename the file to the real destination. $doit $mvcmd "$dsttmp" "$dst" } } || exit 1 trap '' 0 fi done # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-end: "$" # End: dnstop/new_gtlds.h0000664000175100017510000003257414661103220012330 0ustar mhmh static const char *NewGTLDs_array[] = { "aaa", "aarp", "abarth", "abb", "abbott", "abbvie", "abc", "able", "abogado", "abudhabi", "academy", "accenture", "accountant", "accountants", "aco", "active", "actor", "adac", "ads", "adult", "aeg", "aetna", "afamilycompany", "afl", "africa", "agakhan", "agency", "aig", "aigo", "airbus", "airforce", "airtel", "akdn", "alfaromeo", "alibaba", "alipay", "allfinanz", "allstate", "ally", "alsace", "alstom", "americanexpress", "americanfamily", "amex", "amfam", "amica", "amsterdam", "analytics", "android", "anquan", "anz", "aol", "apartments", "app", "apple", "aquarelle", "arab", "aramco", "archi", "army", "art", "arte", "asda", "associates", "athleta", "attorney", "auction", "audi", "audible", "audio", "auspost", "author", "auto", "autos", "avianca", "aws", "axa", "azure", "baby", "baidu", "banamex", "bananarepublic", "band", "bank", "bar", "barcelona", "barclaycard", "barclays", "barefoot", "bargains", "baseball", "basketball", "bauhaus", "bayern", "bbc", "bbt", "bbva", "bcg", "bcn", "beats", "beauty", "beer", "bentley", "berlin", "best", "bestbuy", "bet", "bharti", "bible", "bid", "bike", "bing", "bingo", "bio", "black", "blackfriday", "blanco", "blockbuster", "blog", "bloomberg", "blue", "bms", "bmw", "bnl", "bnpparibas", "boats", "boehringer", "bofa", "bom", "bond", "boo", "book", "booking", "boots", "bosch", "bostik", "boston", "bot", "boutique", "box", "bradesco", "bridgestone", "broadway", "broker", "brother", "brussels", "budapest", "bugatti", "build", "builders", "business", "buy", "buzz", "bzh", "cab", "cafe", "cal", "call", "calvinklein", "cam", "camera", "camp", "cancerresearch", "canon", "capetown", "capital", "capitalone", "car", "caravan", "cards", "care", "career", "careers", "cars", "cartier", "casa", "case", "caseih", "cash", "casino", "catering", "catholic", "cba", "cbn", "cbre", "cbs", "ceb", "center", "ceo", "cern", "cfa", "cfd", "chanel", "channel", "chase", "chat", "cheap", "chintai", "christmas", "chrome", "chrysler", "church", "cipriani", "circle", "cisco", "citadel", "citi", "citic", "city", "cityeats", "claims", "cleaning", "click", "clinic", "clinique", "clothing", "cloud", "club", "clubmed", "coach", "codes", "coffee", "college", "cologne", "comcast", "commbank", "community", "company", "compare", "computer", "comsec", "condos", "construction", "consulting", "contact", "contractors", "cooking", "cookingchannel", "cool", "corsica", "country", "coupon", "coupons", "courses", "credit", "creditcard", "creditunion", "cricket", "crown", "crs", "cruise", "cruises", "csc", "cuisinella", "cymru", "cyou", "dabur", "dad", "dance", "data", "date", "dating", "datsun", "day", "dclk", "dds", "deal", "dealer", "deals", "degree", "delivery", "dell", "deloitte", "delta", "democrat", "dental", "dentist", "desi", "design", "dev", "dhl", "diamonds", "diet", "digital", "direct", "directory", "discount", "discover", "dish", "diy", "dnp", "docs", "doctor", "dodge", "dog", "doha", "domains", "dot", "download", "drive", "dtv", "dubai", "duck", "dunlop", "duns", "dupont", "durban", "dvag", "dvr", "earth", "eat", "eco", "edeka", "education", "email", "emerck", "energy", "engineer", "engineering", "enterprises", "epost", "epson", "equipment", "ericsson", "erni", "esq", "estate", "esurance", "etisalat", "eurovision", "eus", "events", "everbank", "exchange", "expert", "exposed", "express", "extraspace", "fage", "fail", "fairwinds", "faith", "family", "fan", "fans", "farm", "farmers", "fashion", "fast", "fedex", "feedback", "ferrari", "ferrero", "fiat", "fidelity", "fido", "film", "final", "finance", "financial", "fire", "firestone", "firmdale", "fish", "fishing", "fit", "fitness", "flickr", "flights", "flir", "florist", "flowers", "fly", "foo", "food", "foodnetwork", "football", "ford", "forex", "forsale", "forum", "foundation", "fox", "free", "fresenius", "frl", "frogans", "frontdoor", "frontier", "ftr", "fujitsu", "fujixerox", "fun", "fund", "furniture", "futbol", "fyi", "gal", "gallery", "gallo", "gallup", "game", "games", "gap", "garden", "gbiz", "gdn", "gea", "gent", "genting", "george", "ggee", "gift", "gifts", "gives", "giving", "glade", "glass", "gle", "global", "globo", "gmail", "gmbh", "gmo", "gmx", "godaddy", "gold", "goldpoint", "golf", "goo", "goodhands", "goodyear", "goog", "google", "gop", "got", "grainger", "graphics", "gratis", "green", "gripe", "grocery", "group", "guardian", "gucci", "guge", "guide", "guitars", "guru", "hair", "hamburg", "hangout", "haus", "hbo", "hdfc", "hdfcbank", "health", "healthcare", "help", "helsinki", "here", "hermes", "hgtv", "hiphop", "hisamitsu", "hitachi", "hiv", "hkt", "hockey", "holdings", "holiday", "homedepot", "homegoods", "homes", "homesense", "honda", "honeywell", "horse", "hospital", "host", "hosting", "hot", "hoteles", "hotels", "hotmail", "house", "how", "hsbc", "hughes", "hyatt", "hyundai", "ibm", "icbc", "ice", "icu", "ieee", "ifm", "ikano", "imamat", "imdb", "immo", "immobilien", "industries", "infiniti", "ing", "ink", "institute", "insurance", "insure", "intel", "international", "intuit", "investments", "ipiranga", "irish", "iselect", "ismaili", "ist", "istanbul", "itau", "itv", "iveco", "iwc", "jaguar", "java", "jcb", "jcp", "jeep", "jetzt", "jewelry", "jio", "jlc", "jll", "jmp", "jnj", "joburg", "jot", "joy", "jpmorgan", "jprs", "juegos", "juniper", "kaufen", "kddi", "kerryhotels", "kerrylogistics", "kerryproperties", "kfh", "kia", "kim", "kinder", "kindle", "kitchen", "kiwi", "koeln", "komatsu", "kosher", "kpmg", "kpn", "krd", "kred", "kuokgroup", "kyoto", "lacaixa", "ladbrokes", "lamborghini", "lamer", "lancaster", "lancia", "lancome", "land", "landrover", "lanxess", "lasalle", "lat", "latino", "latrobe", "law", "lawyer", "lds", "lease", "leclerc", "lefrak", "legal", "lego", "lexus", "lgbt", "liaison", "lidl", "life", "lifeinsurance", "lifestyle", "lighting", "like", "lilly", "limited", "limo", "lincoln", "linde", "link", "lipsy", "live", "living", "lixil", "llc", "loan", "loans", "locker", "locus", "loft", "lol", "london", "lotte", "lotto", "love", "lpl", "lplfinancial", "ltd", "ltda", "lundbeck", "lupin", "luxe", "luxury", "macys", "madrid", "maif", "maison", "makeup", "man", "management", "mango", "map", "market", "marketing", "markets", "marriott", "marshalls", "maserati", "mattel", "mba", "mckinsey", "med", "media", "meet", "melbourne", "meme", "memorial", "men", "menu", "meo", "merckmsd", "metlife", "miami", "microsoft", "mini", "mint", "mit", "mitsubishi", "mlb", "mls", "mma", "mobile", "mobily", "moda", "moe", "moi", "mom", "monash", "money", "monster", "mopar", "mormon", "mortgage", "moscow", "moto", "motorcycles", "mov", "movie", "movistar", "msd", "mtn", "mtr", "mutual", "nab", "nadex", "nagoya", "nationwide", "natura", "navy", "nba", "nec", "netbank", "netflix", "network", "neustar", "new", "newholland", "news", "next", "nextdirect", "nexus", "nfl", "ngo", "nhk", "nico", "nike", "nikon", "ninja", "nissan", "nissay", "nokia", "northwesternmutual", "norton", "now", "nowruz", "nowtv", "nra", "nrw", "ntt", "nyc", "obi", "observer", "off", "office", "okinawa", "olayan", "olayangroup", "oldnavy", "ollo", "omega", "one", "ong", "onl", "online", "onyourside", "ooo", "open", "oracle", "orange", "organic", "origins", "osaka", "otsuka", "ott", "ovh", "page", "panasonic", "panerai", "paris", "pars", "partners", "parts", "party", "passagens", "pay", "pccw", "pet", "pfizer", "pharmacy", "phd", "philips", "phone", "photo", "photography", "photos", "physio", "piaget", "pics", "pictet", "pictures", "pid", "pin", "ping", "pink", "pioneer", "pizza", "place", "play", "playstation", "plumbing", "plus", "pnc", "pohl", "poker", "politie", "porn", "pramerica", "praxi", "press", "prime", "prod", "productions", "prof", "progressive", "promo", "properties", "property", "protection", "pru", "prudential", "pub", "pwc", "qpon", "quebec", "quest", "qvc", "racing", "radio", "raid", "read", "realestate", "realtor", "realty", "recipes", "red", "redstone", "redumbrella", "rehab", "reise", "reisen", "reit", "reliance", "ren", "rent", "rentals", "repair", "report", "republican", "rest", "restaurant", "review", "reviews", "rexroth", "rich", "richardli", "ricoh", "rightathome", "ril", "rio", "rip", "rmit", "rocher", "rocks", "rodeo", "rogers", "room", "rsvp", "rugby", "ruhr", "run", "rwe", "ryukyu", "saarland", "safe", "safety", "sakura", "sale", "salon", "samsclub", "samsung", "sandvik", "sandvikcoromant", "sanofi", "sap", "sapo", "sarl", "sas", "save", "saxo", "sbi", "sbs", "sca", "scb", "schaeffler", "schmidt", "scholarships", "school", "schule", "schwarz", "science", "scjohnson", "scor", "scot", "search", "seat", "secure", "security", "seek", "select", "sener", "services", "ses", "seven", "sew", "sex", "sexy", "sfr", "shangrila", "sharp", "shaw", "shell", "shia", "shiksha", "shoes", "shop", "shopping", "shouji", "show", "showtime", "shriram", "silk", "sina", "singles", "site", "ski", "skin", "sky", "skype", "sling", "smart", "smile", "sncf", "soccer", "social", "softbank", "software", "sohu", "solar", "solutions", "song", "sony", "soy", "space", "spiegel", "sport", "spot", "spreadbetting", "srl", "srt", "stada", "staples", "star", "starhub", "statebank", "statefarm", "statoil", "stc", "stcgroup", "stockholm", "storage", "store", "stream", "studio", "study", "style", "sucks", "supplies", "supply", "support", "surf", "surgery", "suzuki", "swatch", "swiftcover", "swiss", "sydney", "symantec", "systems", "tab", "taipei", "talk", "taobao", "target", "tatamotors", "tatar", "tattoo", "tax", "taxi", "tci", "tdk", "team", "tech", "technology", "telecity", "telefonica", "temasek", "tennis", "teva", "thd", "theater", "theatre", "tiaa", "tickets", "tienda", "tiffany", "tips", "tires", "tirol", "tjmaxx", "tjx", "tkmaxx", "tmall", "today", "tokyo", "tools", "top", "toray", "toshiba", "total", "tours", "town", "toyota", "toys", "trade", "trading", "training", "travelchannel", "travelers", "travelersinsurance", "trust", "trv", "tube", "tui", "tunes", "tushu", "tvs", "ubank", "ubs", "uconnect", "unicom", "university", "uno", "uol", "ups", "vacations", "vana", "vanguard", "vegas", "ventures", "verisign", "versicherung", "vet", "viajes", "video", "vig", "viking", "villas", "vin", "vip", "virgin", "visa", "vision", "vista", "vistaprint", "viva", "vivo", "vlaanderen", "vodka", "volkswagen", "volvo", "vote", "voting", "voto", "voyage", "vuelos", "wales", "walmart", "walter", "wang", "wanggou", "warman", "watch", "watches", "weather", "weatherchannel", "webcam", "weber", "website", "wed", "wedding", "weibo", "weir", "whoswho", "wien", "wiki", "williamhill", "win", "windows", "wine", "winners", "wme", "wolterskluwer", "woodside", "work", "works", "world", "wow", "wtc", "wtf", "xbox", "xerox", "xfinity", "xihuan", "xin", "xn--11b4c3d", "xn--1ck2e1b", "xn--1qqw23a", "xn--30rr7y", "xn--3bst00m", "xn--3ds443g", "xn--3oq18vl8pn36a", "xn--3pxu8k", "xn--42c2d9a", "xn--45q11c", "xn--4gbrim", "xn--55qw42g", "xn--55qx5d", "xn--5su34j936bgsg", "xn--5tzm5g", "xn--6frz82g", "xn--6qq986b3xl", "xn--80adxhks", "xn--80aqecdr1a", "xn--80asehdb", "xn--80aswg", "xn--8y0a063a", "xn--9dbq2a", "xn--9et52u", "xn--9krt00a", "xn--b4w605ferd", "xn--bck1b9a5dre4c", "xn--c1avg", "xn--c2br7g", "xn--cck2b3b", "xn--cg4bki", "xn--czr694b", "xn--czrs0t", "xn--czru2d", "xn--d1acj3b", "xn--eckvdtc9d", "xn--efvy88h", "xn--estv75g", "xn--fct429k", "xn--fhbei", "xn--fiq228c5hs", "xn--fiq64b", "xn--fjq720a", "xn--flw351e", "xn--fzys8d69uvgm", "xn--g2xx48c", "xn--gckr3f0f", "xn--gk3at1e", "xn--hxt814e", "xn--i1b6b1a6a2e", "xn--imr513n", "xn--io0a7i", "xn--j1aef", "xn--jlq61u9w7b", "xn--jvr189m", "xn--kcrx77d1x4a", "xn--kpu716f", "xn--kput3i", "xn--mgba3a3ejt", "xn--mgba7c0bbn0a", "xn--mgbaakc7dvf", "xn--mgbab2bd", "xn--mgbb9fbpob", "xn--mgbca7dzdo", "xn--mgbi4ecexp", "xn--mgbt3dhd", "xn--mk1bu44c", "xn--mxtq1m", "xn--ngbc5azd", "xn--ngbe9e0a", "xn--ngbrx", "xn--nqv7f", "xn--nqv7fs00ema", "xn--nyqy26a", "xn--otu796d", "xn--p1acf", "xn--pbt977c", "xn--pssy2u", "xn--q9jyb4c", "xn--qcka1pmc", "xn--rhqv96g", "xn--rovu88b", "xn--ses554g", "xn--t60b56a", "xn--tckwe", "xn--tiq49xqyj", "xn--unup4y", "xn--vermgensberater-ctb", "xn--vermgensberatung-pwb", "xn--vhquv", "xn--vuq861b", "xn--w4r85el8fhu5dnra", "xn--w4rs40l", "xn--xhq521b", "xn--zfr164b", "xperia", "xyz", "yachts", "yahoo", "yamaxun", "yandex", "yodobashi", "yoga", "yokohama", "you", "youtube", "yun", "zappos", "zara", "zero", "zip", "zippo", "zone", "zuerich", NULL }; dnstop/config.h.in0000664000175100017510000001272214661103220012205 0ustar mhmh/* config.h.in. Generated from configure.scan by autoheader. */ /* Define to 1 if you have the header file. */ #undef HAVE_ARPA_INET_H /* Define to 1 if you have the header file. */ #undef HAVE_ARPA_NAMESER_COMPAT_H /* Define to 1 if you have the header file. */ #undef HAVE_ENDIAN_H /* Define to 1 if you have the header file. */ #undef HAVE_INTTYPES_H /* Define to 1 if you have the `curses' library (-lcurses). */ #undef HAVE_LIBCURSES /* Define to 1 if you have the `ncurses' library (-lncurses). */ #undef HAVE_LIBNCURSES /* Define to 1 if you have the `nsl' library (-lnsl). */ #undef HAVE_LIBNSL /* Define to 1 if you have the `pcap' library (-lpcap). */ #undef HAVE_LIBPCAP /* Define to 1 if you have the `resolv' library (-lresolv). */ #undef HAVE_LIBRESOLV /* Define to 1 if you have the `socket' library (-lsocket). */ #undef HAVE_LIBSOCKET /* Define to 1 if your system has a GNU libc compatible `malloc' function, and to 0 otherwise. */ #undef HAVE_MALLOC /* Define to 1 if you have the header file. */ #undef HAVE_MEMORY_H /* Define to 1 if you have the `memset' function. */ #undef HAVE_MEMSET /* Define to 1 if you have the header file. */ #undef HAVE_NETDB_H /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_IF_ETHER_H /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_IN_H /* Define to 1 if you have the header file. */ #undef HAVE_NET_IF_ARP_H /* Define to 1 if you have the header file. */ #undef HAVE_NET_IF_H /* Define to 1 if you have the header file. */ #undef HAVE_NET_IF_PPP_H /* Define to 1 if you have the `select' function. */ #undef HAVE_SELECT /* Define to 1 if `stat' has the bug that it succeeds when given the zero-length file name argument. */ #undef HAVE_STAT_EMPTY_STRING_BUG /* Define to 1 if you have the header file. */ #undef HAVE_STDINT_H /* Define to 1 if you have the header file. */ #undef HAVE_STDLIB_H /* Define to 1 if you have the `strchr' function. */ #undef HAVE_STRCHR /* Define to 1 if you have the `strdup' function. */ #undef HAVE_STRDUP /* Define to 1 if you have the header file. */ #undef HAVE_STRINGS_H /* Define to 1 if you have the header file. */ #undef HAVE_STRING_H /* Define to 1 if you have the `strrchr' function. */ #undef HAVE_STRRCHR /* Define to 1 if you have the `strstr' function. */ #undef HAVE_STRSTR /* Define to 1 if the system has the type `struct bpf_timeval'. */ #undef HAVE_STRUCT_BPF_TIMEVAL /* Define to 1 if you have the header file. */ #undef HAVE_SYS_PARAM_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_SELECT_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_SOCKET_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_STAT_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_TIME_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_TYPES_H /* Define to 1 if you have the header file. */ #undef HAVE_UNISTD_H /* Define to 1 if `lstat' dereferences a symlink specified with a trailing slash. */ #undef LSTAT_FOLLOWS_SLASHED_SYMLINK /* Define to the address where bug reports for this package should be sent. */ #undef PACKAGE_BUGREPORT /* Define to the full name of this package. */ #undef PACKAGE_NAME /* Define to the full name and version of this package. */ #undef PACKAGE_STRING /* Define to the one symbol short name of this package. */ #undef PACKAGE_TARNAME /* Define to the home page for this package. */ #undef PACKAGE_URL /* Define to the version of this package. */ #undef PACKAGE_VERSION /* Define as the return type of signal handlers (`int' or `void'). */ #undef RETSIGTYPE /* Define to the type of arg 1 for `select'. */ #undef SELECT_TYPE_ARG1 /* Define to the type of args 2, 3 and 4 for `select'. */ #undef SELECT_TYPE_ARG234 /* Define to the type of arg 5 for `select'. */ #undef SELECT_TYPE_ARG5 /* Define to 1 if you have the ANSI C header files. */ #undef STDC_HEADERS /* Define to 1 if you can safely include both and . */ #undef TIME_WITH_SYS_TIME /* Define for Solaris 2.5.1 so the uint32_t typedef from , , or is not used. If the typedef were allowed, the #define below would cause a syntax error. */ #undef _UINT32_T /* Define for Solaris 2.5.1 so the uint8_t typedef from , , or is not used. If the typedef were allowed, the #define below would cause a syntax error. */ #undef _UINT8_T /* Define to empty if `const' does not conform to ANSI C. */ #undef const /* Define to rpl_malloc if the replacement function should be used. */ #undef malloc /* Define to `long int' if does not define. */ #undef off_t /* Define to `unsigned int' if does not define. */ #undef size_t /* Define to the type of an unsigned integer type of width exactly 16 bits if such a type exists and the standard includes do not define it. */ #undef uint16_t /* Define to the type of an unsigned integer type of width exactly 32 bits if such a type exists and the standard includes do not define it. */ #undef uint32_t /* Define to the type of an unsigned integer type of width exactly 8 bits if such a type exists and the standard includes do not define it. */ #undef uint8_t dnstop/known_tlds.h0000664000175100017510000004044614661103220012521 0ustar mhmh static const char *KnownTLDs_array[] = { ".", /* special case for root zone */ "aaa", "aarp", "abarth", "abb", "abbott", "abbvie", "abc", "able", "abogado", "abudhabi", "ac", "academy", "accenture", "accountant", "accountants", "aco", "active", "actor", "ad", "adac", "ads", "adult", "ae", "aeg", "aero", "aetna", "af", "afamilycompany", "afl", "africa", "ag", "agakhan", "agency", "ai", "aig", "aigo", "airbus", "airforce", "airtel", "akdn", "al", "alfaromeo", "alibaba", "alipay", "allfinanz", "allstate", "ally", "alsace", "alstom", "am", "americanexpress", "americanfamily", "amex", "amfam", "amica", "amsterdam", "analytics", "android", "anquan", "anz", "ao", "aol", "apartments", "app", "apple", "aq", "aquarelle", "ar", "arab", "aramco", "archi", "army", "arpa", "in-addr.arpa", /* because dnstop treats in-addr.arpa as a TLD */ "art", "arte", "as", "asda", "asia", "associates", "at", "athleta", "attorney", "au", "auction", "audi", "audible", "audio", "auspost", "author", "auto", "autos", "avianca", "aw", "aws", "ax", "axa", "az", "azure", "ba", "baby", "baidu", "banamex", "bananarepublic", "band", "bank", "bar", "barcelona", "barclaycard", "barclays", "barefoot", "bargains", "baseball", "basketball", "bauhaus", "bayern", "bb", "bbc", "bbt", "bbva", "bcg", "bcn", "bd", "be", "beats", "beauty", "beer", "bentley", "berlin", "best", "bestbuy", "bet", "bf", "bg", "bh", "bharti", "bi", "bible", "bid", "bike", "bing", "bingo", "bio", "biz", "bj", "black", "blackfriday", "blanco", "blockbuster", "blog", "bloomberg", "blue", "bm", "bms", "bmw", "bn", "bnl", "bnpparibas", "bo", "boats", "boehringer", "bofa", "bom", "bond", "boo", "book", "booking", "boots", "bosch", "bostik", "boston", "bot", "boutique", "box", "br", "bradesco", "bridgestone", "broadway", "broker", "brother", "brussels", "bs", "bt", "budapest", "bugatti", "build", "builders", "business", "buy", "buzz", "bv", "bw", "by", "bz", "bzh", "ca", "cab", "cafe", "cal", "call", "calvinklein", "cam", "camera", "camp", "cancerresearch", "canon", "capetown", "capital", "capitalone", "car", "caravan", "cards", "care", "career", "careers", "cars", "cartier", "casa", "case", "caseih", "cash", "casino", "cat", "catering", "catholic", "cba", "cbn", "cbre", "cbs", "cc", "cd", "ceb", "center", "ceo", "cern", "cf", "cfa", "cfd", "cg", "ch", "chanel", "channel", "chase", "chat", "cheap", "chintai", "christmas", "chrome", "chrysler", "church", "ci", "cipriani", "circle", "cisco", "citadel", "citi", "citic", "city", "cityeats", "ck", "cl", "claims", "cleaning", "click", "clinic", "clinique", "clothing", "cloud", "club", "clubmed", "cm", "cn", "co", "coach", "codes", "coffee", "college", "cologne", "com", "comcast", "commbank", "community", "company", "compare", "computer", "comsec", "condos", "construction", "consulting", "contact", "contractors", "cooking", "cookingchannel", "cool", "coop", "corsica", "country", "coupon", "coupons", "courses", "cr", "credit", "creditcard", "creditunion", "cricket", "crown", "crs", "cruise", "cruises", "csc", "cu", 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See the LICENSE file for details. */ #include "config.h" #include #include #include #if HAVE_STDINT_H #include #endif #include "hashtbl.h" hashtbl *hash_create(int N, hashfunc *hasher, hashkeycmp *cmp) { hashtbl *new = calloc(1, sizeof(*new)); assert(new); new->modulus = N; new->hasher = hasher; new->keycmp = cmp; new->items = calloc(N, sizeof(hashitem*)); return new; } int hash_add(const void *key, void *data, hashtbl *tbl) { hashitem *new = calloc(1, sizeof(*new)); hashitem **I; int slot; new->key = key; new->data = data; slot = tbl->hasher(key) % tbl->modulus; for (I = &tbl->items[slot]; *I; I = &(*I)->next); *I = new; return 0; } void * hash_find(const void *key, hashtbl *tbl) { int slot = tbl->hasher(key) % tbl->modulus; hashitem *i; for (i = tbl->items[slot]; i; i = i->next) { if (0 == tbl->keycmp(key, i->key)) return i->data; } return NULL; } int hash_count(hashtbl *tbl) { int slot; int count = 0; for(slot = 0; slot < tbl->modulus; slot++) { hashitem *i; for (i = tbl->items[slot]; i; i=i->next) count++; } return count; } void hash_free(hashtbl *tbl, void freefunc(void *)) { int slot; for(slot = 0; slot < tbl->modulus; slot++) { hashitem *i; hashitem *next; for (i = tbl->items[slot]; i; i=next) { next = i->next; freefunc(i->data); free(i); } tbl->items[slot] = NULL; } } static void hash_iter_next_slot(hashtbl *tbl) { while (tbl->iter.next == NULL) { tbl->iter.slot++; if (tbl->iter.slot == tbl->modulus) break; tbl->iter.next = tbl->items[tbl->iter.slot]; } } void hash_iter_init(hashtbl *tbl) { tbl->iter.slot = 0; tbl->iter.next = tbl->items[tbl->iter.slot]; if (NULL == tbl->iter.next) hash_iter_next_slot(tbl); } void * hash_iterate(hashtbl *tbl) { hashitem *this = tbl->iter.next; if (this) { tbl->iter.next = this->next; if (NULL == tbl->iter.next) hash_iter_next_slot(tbl); } return this ? this->data : NULL; } dnstop/README.md0000664000175100017510000000203214661103220011432 0ustar mhmh# DNSTOP: STAY ON TOP OF YOUR DNS TRAFFIC _dnstop_ is a libpcap application (like tcpdump) that displays various tables of DNS traffic on your network. Currently _dnstop_ displays tables of: - Source IP addresses - Destination IP addresses - Query types - Response codes - Opcodes - Top level domains - Second level domains - Third level domains - etc... _dnstop_ supports both IPv4 and IPv6 addresses. To help find especially undesirable DNS queries, _dnstop_ provides a number of filters. The filters tell _dnstop_ to display only the following types of queries: - For unknown/invalid TLDs - A queries where the query name is already an IP address - PTR queries for RFC1918 address space - Responses with code REFUSED - Responses with code SERVFAIL - Responses with code NXDOMAIN _dnstop_ can either read packets from the live capture device, or from a tcpdump savefile. See also http://dns.measurement-factory.com/tools/dnstop/. For compatibility with [musl libc](https://musl.libc.org/), define `CFLAGS=-D_GNU_SOURCE` during `configure`. dnstop/inX_addr.c0000664000175100017510000000617014661103220012056 0ustar mhmh #include #include #include #include #include #include "inX_addr.h" static unsigned char v4_in_v6_prefix[12] = {0,0,0,0,0,0,0,0,0,0,0xFF,0xFF}; #if USE_IPV6 static int is_v4_in_v6(const struct in6_addr *addr) { return (0 == memcmp(addr, v4_in_v6_prefix, 12)); } #endif const char * inXaddr_ntop(const inX_addr *a, char *buf, socklen_t len) { const char *p; #if USE_IPV6 if (!is_v4_in_v6(&a->in6)) p = inet_ntop(AF_INET6, &a->in6, buf, len); else #endif p = inet_ntop(AF_INET, &a->_.in4, buf, len); if (p) return p; return "[unprintable]"; } int inXaddr_pton(const char *buf, inX_addr *a) { #if USE_IPV6 if (strchr(buf, ':')) return inet_pton(AF_INET6, buf, a); memcpy(a, v4_in_v6_prefix, 12); #endif return inet_pton(AF_INET, buf, &a->_.in4); } unsigned int inXaddr_hash(const inX_addr *a, unsigned int bits) { static const uint32_t A = 2654435769U; // closest prime to 2^32 * $goldenratio /* * Fibonacci hashing * see http://www.brpreiss.com/books/opus4/html/page214.html * Note ignores upper parts of IPv6 */ return (A * ntohl(a->_.in4.s_addr)) >> (32 - bits); } int inXaddr_cmp(const inX_addr *a, const inX_addr *b) { if (ntohl(a->_.in4.s_addr) < ntohl(b->_.in4.s_addr)) return -1; if (ntohl(a->_.in4.s_addr) > ntohl(b->_.in4.s_addr)) return 1; #if USE_IPV6 if (is_v4_in_v6(&a->in6)) return 0; if (ntohl(a->_.pad2.s_addr) < ntohl(b->_.pad2.s_addr)) return -1; if (ntohl(a->_.pad2.s_addr) > ntohl(b->_.pad2.s_addr)) return 1; if (ntohl(a->_.pad1.s_addr) < ntohl(b->_.pad1.s_addr)) return -1; if (ntohl(a->_.pad1.s_addr) > ntohl(b->_.pad1.s_addr)) return 1; if (ntohl(a->_.pad0.s_addr) < ntohl(b->_.pad0.s_addr)) return -1; if (ntohl(a->_.pad0.s_addr) > ntohl(b->_.pad0.s_addr)) return 1; #endif return 0; } inX_addr inXaddr_mask (const inX_addr *a, const inX_addr *mask) { inX_addr masked; masked._.in4.s_addr = a->_.in4.s_addr & mask->_.in4.s_addr; #if USE_IPV6 if (is_v4_in_v6(&a->in6)) { masked._.pad2.s_addr = a->_.pad2.s_addr; masked._.pad1.s_addr = a->_.pad1.s_addr; masked._.pad0.s_addr = a->_.pad0.s_addr; } else { masked._.pad2.s_addr = a->_.pad2.s_addr & mask->_.pad2.s_addr; masked._.pad1.s_addr = a->_.pad1.s_addr & mask->_.pad1.s_addr; masked._.pad0.s_addr = a->_.pad0.s_addr & mask->_.pad0.s_addr; } #endif return masked; } int inXaddr_version(const inX_addr *a) { #if USE_IPV6 if (!is_v4_in_v6(&a->in6)) return 6; #endif return 4; } int inXaddr_assign_v4(inX_addr *dst, const struct in_addr *src) { #if USE_IPV6 memcpy(dst, v4_in_v6_prefix, 12); #endif /* memcpy() instead of struct assignment in case src is not aligned */ memcpy(&dst->_.in4, src, sizeof(*src)); return 0; } #if USE_IPV6 int inXaddr_assign_v6(inX_addr *dst, const struct in6_addr *src) { /* memcpy() instead of struct assignment in case src is not aligned */ memcpy(&dst->in6, src, sizeof(*src)); return 0; } #endif dnstop/mk-known-tlds.sh0000664000175100017510000000066514661103220013226 0ustar mhmh#!/bin/sh set -e wget -O /tmp/tlds http://data.iana.org/TLD/tlds-alpha-by-domain.txt exec #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_ARPA_NAMESER_COMPAT_H #include #endif #include #include #include #include #include #include #include #include #include #ifdef HAVE_NET_IF_PPP_H #include #define PPP_ADDRESS_VAL 0xff /* The address byte value */ #define PPP_CONTROL_VAL 0x03 /* The control byte value */ #endif #include "hashtbl.h" #include "inX_addr.h" #define PCAP_SNAPLEN 65535 #define MAX_QNAME_SZ 512 #define DNS_MSG_HDR_SZ 12 #ifndef ETHER_HDR_LEN #define ETHER_ADDR_LEN 6 #define ETHER_TYPE_LEN 2 #define ETHER_HDR_LEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN) #endif #ifndef ETHERTYPE_8021Q #define ETHERTYPE_8021Q 0x8100 #endif #ifndef ETHERTYPE_IPV6 #define ETHERTYPE_IPV6 0x86DD #endif #if defined(__linux__) || defined(__GLIBC__) || defined(__GNU__) #define uh_dport dest #define uh_sport source #endif typedef struct { inX_addr src; int count; } AgentAddr; typedef struct { char *s; int count; } StringCounter; typedef struct { inX_addr addr; char *str; } StringAddr; /* This struct cobbles together Source and Nld */ typedef struct { StringAddr straddr; int count; } StringAddrCounter; typedef struct { int cnt; void *ptr; } SortItem; typedef struct _rfc1035_header rfc1035_header; struct _rfc1035_header { unsigned short id; unsigned int qr:1; unsigned int opcode:4; unsigned int aa:1; unsigned int tc:1; unsigned int rd:1; unsigned int ra:1; unsigned int rcode:4; unsigned short qdcount; unsigned short ancount; unsigned short nscount; unsigned short arcount; }; struct ip_list_s { inX_addr addr; void *data; struct ip_list_s *next; }; typedef struct ip_list_s ip_list_t; char *device = NULL; pcap_t *pcap = NULL; /* * bpf_program_str used to default to: * * udp dst port 53 and udp[10:2] & 0x8000 = 0 * * but that didn't work so well with IPv6. Now we have the command line options * -Q and -R to choose counting queries, responses, or both. */ char *bpf_program_str = "udp port 53"; WINDOW *w; static unsigned short check_port = 0; void (*SubReport) (void)= NULL; int (*handle_datalink) (const u_char * pkt, int len)= NULL; int Quit = 0; int Got_EOF = 0; unsigned int hash_buckets = 100057; char *progname = NULL; int anon_flag = 0; int max_level = 2; int cur_level = 1; int promisc_flag = 1; int progress_flag = 0; ip_list_t *IgnoreList = NULL; int do_redraw = 1; int opt_count_queries = 0; int opt_count_replies = 0; int opt_count_ipv4 = 0; int opt_count_ipv6 = 0; int opt_count_domsrc = 1; const char *opt_filter_by_name = 0; /* * flags/features for non-interactive mode */ int interactive = 1; typedef int (printer) (const char *,...); printer *print_func = (printer *) printw; typedef const char *(col_fmt) (const SortItem *); typedef char *(strify) (unsigned int); #define T_MAX 65536 #define C_MAX 65536 #define OP_MAX 16 #define RC_MAX 16 unsigned int query_count_intvl = 0; unsigned int query_count_total = 0; unsigned int reply_count_intvl = 0; unsigned int reply_count_total = 0; int qtype_counts[T_MAX]; int opcode_counts[OP_MAX]; int rcode_counts[RC_MAX]; int qclass_counts[C_MAX]; hashtbl *Sources = NULL; hashtbl *Destinations = NULL; hashtbl *Domains[10]; hashtbl *DomSrcs[10]; hashtbl *KnownTLDs = NULL; hashtbl *NewGTLDs = NULL; #ifdef HAVE_STRUCT_BPF_TIMEVAL struct bpf_timeval last_ts; #else struct timeval last_ts; #endif time_t report_interval = 1; /* * These hold "%d" printfed strings for non-standard types/codes */ static char *qtypes_buf[T_MAX]; static char *rcodes_buf[RC_MAX]; static char *opcodes_buf[OP_MAX]; /* Prototypes */ void Sources_report(void); void Destinatioreport(void); void Qtypes_report(void); void Opcodes_report(void); void Rcodes_report(void); void Domain_report(); void DomSrc_report(); void Help_report(void); void ResetCounters(void); void report(void); typedef struct { unsigned short qtype; unsigned short qclass; const char *qname; const inX_addr *src_addr; const inX_addr *dst_addr; unsigned char rcode; } FilterData; typedef int Filter_t(FilterData *); Filter_t UnknownTldFilter; Filter_t AforAFilter; Filter_t RFC1918PtrFilter; Filter_t RcodeRefusedFilter; Filter_t RcodeServfailFilter; Filter_t RcodeNxdomainFilter; Filter_t QnameFilter; Filter_t BitsquatFilter; Filter_t QtypeAnyFilter; Filter_t *Filter = NULL; unsigned int my_inXaddr_hash(const void *key) { return inXaddr_hash(key, 24); } int my_inXaddr_cmp(const void *a, const void *b) { return inXaddr_cmp(a, b); } int ignore_list_match(const inX_addr * addr) { ip_list_t *ptr; for (ptr = IgnoreList; ptr != NULL; ptr = ptr->next) if (0 == inXaddr_cmp(addr, &ptr->addr)) return (1); return (0); } void ignore_list_add(const inX_addr * addr) { ip_list_t *new; if (ignore_list_match(addr) != 0) return; new = malloc(sizeof(ip_list_t)); if (new == NULL) { perror("malloc"); return; } new->addr = *addr; new->next = IgnoreList; IgnoreList = new; } void ignore_list_add_name(const char *name) { struct addrinfo *ai_list; struct addrinfo *ai_ptr; inX_addr addr; int status; status = getaddrinfo(name, NULL, NULL, &ai_list); if (status != 0) return; for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) { if (ai_ptr->ai_family == AF_INET) { inXaddr_assign_v4(&addr, &((struct sockaddr_in *)ai_ptr->ai_addr)-> sin_addr); ignore_list_add(&addr); } #if USE_IPV6 else if (ai_ptr->ai_family == AF_INET6) { inXaddr_assign_v6(&addr, &((struct sockaddr_in6 *)ai_ptr->ai_addr)->sin6_addr); ignore_list_add(&addr); } #endif } freeaddrinfo(ai_list); } void allocate_anonymous_address(inX_addr * anon_addr, const inX_addr * orig_addr) { static ip_list_t *list = NULL; static int entropy_fd = -1; ip_list_t *ptr; for (ptr = list; ptr != NULL; ptr = ptr->next) { if (0 == inXaddr_cmp(orig_addr, &ptr->addr)) break; } if (-1 == entropy_fd) { entropy_fd = open("/dev/urandom", 0); if (-1 == entropy_fd) { entropy_fd = open("/dev/random", 0); if (-1 == entropy_fd) { fprintf(stderr, "failed to open /dev/urandom or /dev/random"); exit(1); } } } if (ptr == NULL) { char buf[16]; ptr = (ip_list_t *) malloc(sizeof(ip_list_t) + sizeof(inX_addr)); if (ptr == NULL) return; ptr->addr = *orig_addr; ptr->data = (void *)(ptr + 1); if (4 == inXaddr_version(orig_addr)) { ssize_t rd = read(entropy_fd, buf, 4); if (rd < 4) err(errno, "read entropy"); inXaddr_assign_v4(ptr->data, (struct in_addr *)buf); } #if USE_IPV6 else { ssize_t rd = read(entropy_fd, buf, 16); if (rd < 16) err(errno, "read entropy"); inXaddr_assign_v6(ptr->data, (struct in6_addr *)buf); } #endif ptr->next = list; list = ptr; } *anon_addr = *(inX_addr *) ptr->data; } const char * anon_inet_ntoa(const inX_addr * addr) { static char buffer[INET6_ADDRSTRLEN]; inX_addr anon_addr; if (anon_flag) { allocate_anonymous_address(&anon_addr, addr); addr = &anon_addr; } return inXaddr_ntop(addr, buffer, sizeof(buffer)); } AgentAddr * AgentAddr_lookup_or_add(hashtbl * tbl, const inX_addr * addr) { AgentAddr *x = hash_find(addr, tbl); if (NULL == x) { x = calloc(1, sizeof(*x)); x->src = *addr; hash_add(&x->src, x, tbl); } return x; } static unsigned int string_hash(const void *s) { return hashendian(s, strlen(s), 0); } static int string_cmp(const void *a, const void *b) { return strcmp(a, b); } StringCounter * StringCounter_lookup_or_add(hashtbl * tbl, const char *s) { StringCounter *x = hash_find(s, tbl); if (NULL == x) { x = calloc(1, sizeof(*x)); x->s = strdup(s); hash_add(x->s, x, tbl); } return x; } static unsigned int stringaddr_hash(const void *p) { const StringAddr *sa = p; unsigned int h0 = inXaddr_hash(&sa->addr, 32); unsigned int h1 = hashendian(sa->str, strlen(sa->str), h0); return h1; } static int stringaddr_cmp(const void *a, const void *b) { const StringAddr *A = a; const StringAddr *B = b; int x = inXaddr_cmp(&A->addr, &B->addr); if (x) return x; return strcmp(A->str, B->str); } StringAddrCounter * StringAddrCounter_lookup_or_add(hashtbl * tbl, const inX_addr * addr, const char *str) { StringAddr sa; StringAddrCounter *x; sa.addr = *addr; sa.str = (char *)str; x = hash_find(&sa, tbl); if (NULL == x) { x = calloc(1, sizeof(*x)); x->straddr.str = strdup(str); x->straddr.addr = *addr; hash_add(&x->straddr, x, tbl); } return x; } int SortItem_cmp(const void *A, const void *B) { const SortItem *a = A; const SortItem *b = B; if (a->cnt < b->cnt) return 1; if (a->cnt > b->cnt) return -1; if (a->ptr < b->ptr) return 1; if (a->ptr > b->ptr) return -1; return 0; } #define RFC1035_MAXLABELSZ 63 static int rfc1035NameUnpack(const char *buf, size_t sz, off_t * off, char *name, size_t ns ) { off_t no = 0; unsigned char c; size_t len; static int loop_detect = 0; if (loop_detect > 2) return 4; /* compression loop */ if (ns <= 0) return 4; /* probably compression loop */ do { if ((*off) >= sz) break; c = *(buf + (*off)); if (c > 191) { /* blasted compression */ int rc; unsigned short s; off_t ptr; memcpy(&s, buf + (*off), sizeof(s)); s = ntohs(s); (*off) += sizeof(s); /* Sanity check */ if ((*off) >= sz) return 1; /* message too short */ ptr = s & 0x3FFF; /* Make sure the pointer is inside this message */ if (ptr >= sz) return 2; /* bad compression ptr */ if (ptr < DNS_MSG_HDR_SZ) return 2; /* bad compression ptr */ loop_detect++; rc = rfc1035NameUnpack(buf, sz, &ptr, name + no, ns - no); loop_detect--; return rc; } else if (c > RFC1035_MAXLABELSZ) { /* * "(The 10 and 01 combinations are reserved for future use.)" */ return 3; /* reserved label/compression flags */ break; } else { (*off)++; len = (size_t) c; if (len == 0) break; if (len > (ns - 1)) len = ns - 1; if ((*off) + len > sz) return 4; /* message is too short */ if (no + len + 1 > ns) return 5; /* qname would overflow name buffer */ memcpy(name + no, buf + (*off), len); (*off) += len; no += len; *(name + (no++)) = '.'; } } while (c > 0); if (no > 0) *(name + no - 1) = '\0'; /* make sure we didn't allow someone to overflow the name buffer */ assert(no <= ns); return 0; } const char * QnameToNld(const char *qname, int nld) { const char *t = strrchr(qname, '.'); int dotcount = 1; if (NULL == t) t = qname; if (0 == strcmp(t, ".arpa")) dotcount--; while (t > qname && dotcount < nld) { t--; if ('.' == *t) dotcount++; } if (t > qname) t++; return t; } char * str_tolower(char *s) { char *t; for (t = s; *t; t++) *t = tolower(*t); return s; } int handle_dns(const char *buf, int len, const inX_addr * src_addr, const inX_addr * dst_addr) { rfc1035_header qh; unsigned short us; char qname[MAX_QNAME_SZ]; unsigned short qtype; unsigned short qclass; off_t offset; char *t; const char *s; int x; StringCounter *sc; AgentAddr *agent; int lvl; if (len < sizeof(qh)) return 0; memcpy(&us, buf + 00, 2); qh.id = ntohs(us); memcpy(&us, buf + 2, 2); us = ntohs(us); qh.qr = (us >> 15) & 0x01; if (0 == qh.qr && 0 == opt_count_queries) return 0; if (1 == qh.qr && 0 == opt_count_replies) return 0; qh.opcode = (us >> 11) & 0x0F; qh.aa = (us >> 10) & 0x01; qh.tc = (us >> 9) & 0x01; qh.rd = (us >> 8) & 0x01; qh.ra = (us >> 7) & 0x01; qh.rcode = us & 0x0F; memcpy(&us, buf + 4, 2); qh.qdcount = ntohs(us); memcpy(&us, buf + 6, 2); qh.ancount = ntohs(us); memcpy(&us, buf + 8, 2); qh.nscount = ntohs(us); memcpy(&us, buf + 10, 2); qh.arcount = ntohs(us); offset = sizeof(qh); memset(qname, '\0', MAX_QNAME_SZ); x = rfc1035NameUnpack(buf, len, &offset, qname, MAX_QNAME_SZ); if (0 != x) return 0; if ('\0' == qname[0]) strcpy(qname, "."); while ((t = strchr(qname, '\n'))) *t = ' '; while ((t = strchr(qname, '\r'))) *t = ' '; str_tolower(qname); memcpy(&us, buf + offset, 2); qtype = ntohs(us); memcpy(&us, buf + offset + 2, 2); qclass = ntohs(us); if (Filter) { FilterData fd; fd.qtype = qtype; fd.qclass = qclass; fd.qname = qname; fd.src_addr = src_addr; fd.dst_addr = dst_addr; fd.rcode = qh.rcode; if (0 == Filter(&fd)) return 0; } /* gather stats */ if (0 == opt_count_replies || 1 == qh.qr) { rcode_counts[qh.rcode]++; if ((agent = AgentAddr_lookup_or_add(Destinations, dst_addr)) != NULL) agent->count++; } if (0 == opt_count_queries || 0 == qh.qr) { qtype_counts[qtype]++; qclass_counts[qclass]++; opcode_counts[qh.opcode]++; if ((agent = AgentAddr_lookup_or_add(Sources, src_addr)) != NULL) agent->count++; for (lvl = 1; lvl <= max_level; lvl++) { s = QnameToNld(qname, lvl); sc = StringCounter_lookup_or_add(Domains[lvl], s); sc->count++; if (opt_count_domsrc) { StringAddrCounter *ssc; ssc = StringAddrCounter_lookup_or_add(DomSrcs[lvl], src_addr, s); ssc->count++; } } } if (0 == qh.qr) { query_count_intvl++; query_count_total++; } else { reply_count_intvl++; reply_count_total++; } return 1; } int handle_udp(const struct udphdr *udp, int len, const inX_addr * src_addr, const inX_addr * dst_addr) { if (check_port && check_port != udp->uh_dport && check_port != udp->uh_sport) return 0; if (0 == handle_dns((char *)(udp + 1), len - sizeof(*udp), src_addr, dst_addr)) return 0; return 1; } #if USE_IPV6 int handle_ipv6(struct ip6_hdr *ipv6, int len) { int offset; int nexthdr; inX_addr src_addr; inX_addr dst_addr; uint16_t payload_len; if (0 == opt_count_ipv6) return 0; offset = sizeof(struct ip6_hdr); nexthdr = ipv6->ip6_nxt; inXaddr_assign_v6(&src_addr, &ipv6->ip6_src); inXaddr_assign_v6(&dst_addr, &ipv6->ip6_dst); payload_len = ntohs(ipv6->ip6_plen); if (ignore_list_match(&src_addr)) return (0); /* * Parse extension headers. This only handles the standard headers, as * defined in RFC 2460, correctly. Fragments are discarded. */ while ((IPPROTO_ROUTING == nexthdr) /* routing header */ ||(IPPROTO_HOPOPTS == nexthdr) /* Hop-by-Hop options. */ ||(IPPROTO_FRAGMENT == nexthdr) /* fragmentation header. */ ||(IPPROTO_DSTOPTS == nexthdr) /* destination options. */ ||(IPPROTO_DSTOPTS == nexthdr) /* destination options. */ ||(IPPROTO_AH == nexthdr) /* destination options. */ ||(IPPROTO_ESP == nexthdr)) { /* encapsulating security payload. */ struct { uint8_t nexthdr; uint8_t length; } ext_hdr; uint16_t ext_hdr_len; /* Catch broken packets */ if ((offset + sizeof(ext_hdr)) > len) return (0); /* Cannot handle fragments. */ if (IPPROTO_FRAGMENT == nexthdr) return (0); memcpy(&ext_hdr, (char *)ipv6 + offset, sizeof(ext_hdr)); nexthdr = ext_hdr.nexthdr; ext_hdr_len = (8 * (ntohs(ext_hdr.length) + 1)); /* This header is longer than the packets payload.. WTF? */ if (ext_hdr_len > payload_len) return (0); offset += ext_hdr_len; payload_len -= ext_hdr_len; } /* while */ /* Catch broken and empty packets */ if (((offset + payload_len) > len) || (payload_len == 0)) return (0); if (IPPROTO_UDP != nexthdr) return (0); if (handle_udp((struct udphdr *)((char *)ipv6 + offset), payload_len, &src_addr, &dst_addr) == 0) return (0); return (1); /* Success */ } #endif int handle_ipv4(const struct ip *ip, int len) { int offset = ip->ip_hl << 2; inX_addr src_addr; inX_addr dst_addr; #if USE_IPV6 if (ip->ip_v == 6) return (handle_ipv6((struct ip6_hdr *)ip, len)); #endif if (0 == opt_count_ipv4) return 0; inXaddr_assign_v4(&src_addr, &ip->ip_src); inXaddr_assign_v4(&dst_addr, &ip->ip_dst); if (ignore_list_match(&src_addr)) return (0); if (IPPROTO_UDP != ip->ip_p) return 0; if (0 == handle_udp((struct udphdr *)((char *)ip + offset), len - offset, &src_addr, &dst_addr)) return 0; return 1; } #ifdef HAVE_NET_IF_PPP_H int handle_ppp(const u_char * pkt, int len) { unsigned short us; unsigned short proto; if (len < 2) return 0; if (*pkt == PPP_ADDRESS_VAL && *(pkt + 1) == PPP_CONTROL_VAL) { pkt += 2; /* ACFC not used */ len -= 2; } if (len < 2) return 0; if (*pkt % 2) { proto = *pkt; /* PFC is used */ pkt++; len--; } else { memcpy(&us, pkt, sizeof(us)); proto = ntohs(us); pkt += 2; len -= 2; } if (ETHERTYPE_IP != proto && PPP_IP != proto) return 0; return handle_ipv4((struct ip *)pkt, len); } #endif int handle_null(const u_char * pkt, int len) { unsigned int family; memcpy(&family, pkt, sizeof(family)); if (AF_INET == family) return handle_ipv4((struct ip *)(pkt + 4), len - 4); #if USE_IPV6 if (AF_INET6 == family) return handle_ipv6((struct ip6_hdr *)(pkt + 4), len - 4); #endif return 0; } #ifdef DLT_LOOP int handle_loop(const u_char * pkt, int len) { unsigned int family; memcpy(&family, pkt, sizeof(family)); if (AF_INET == ntohl(family)) return handle_ipv4((struct ip *)(pkt + 4), len - 4); #if USE_IPV6 if (AF_INET6 == ntohl(family)) return handle_ipv6((struct ip6_hdr *)(pkt + 4), len - 4); #endif return 0; } #endif #ifdef DLT_RAW int handle_raw(const u_char * pkt, int len) { return handle_ipv4((struct ip *)pkt, len); } #endif int handle_ip(const u_char * pkt, int len, unsigned short etype) { #if USE_IPV6 if (ETHERTYPE_IPV6 == etype) { return (handle_ipv6((struct ip6_hdr *)pkt, len)); } else #endif if (ETHERTYPE_IP == etype) { return handle_ipv4((struct ip *)pkt, len); } return 0; } int handle_ether(const u_char * pkt, int len) { struct ether_header *e = (void *)pkt; unsigned short etype = ntohs(e->ether_type); if (len < ETHER_HDR_LEN) return 0; pkt += ETHER_HDR_LEN; len -= ETHER_HDR_LEN; if (ETHERTYPE_8021Q == etype) { etype = ntohs(*(unsigned short *)(pkt + 2)); pkt += 4; len -= 4; } return handle_ip(pkt, len, etype); } #ifdef DLT_LINUX_SLL static int handle_linux_sll(const u_char * pkt, int len) { struct sll_header { uint16_t pkt_type; uint16_t dev_type; uint16_t addr_len; uint8_t addr[8]; uint16_t proto_type; } *hdr; uint16_t etype; if (len < sizeof(struct sll_header)) return (0); hdr = (struct sll_header *)pkt; pkt = (u_char *) (hdr + 1); len -= sizeof(struct sll_header); etype = ntohs(hdr->proto_type); return handle_ip(pkt, len, etype); } #endif /* DLT_LINUX_SLL */ void handle_pcap(u_char * udata, const struct pcap_pkthdr *hdr, const u_char * pkt) { if (hdr->caplen < ETHER_HDR_LEN) return; if (0 == handle_datalink(pkt, hdr->caplen)) return; last_ts = hdr->ts; } void cron_pre(void) { (void)0; } void cron_post(void) { query_count_intvl = 0; reply_count_intvl = 0; } void redraw() { cron_pre(); report(); cron_post(); do_redraw = 0; } void keyboard(void) { int ch; int old_do_redraw = do_redraw; /* * The screen should be redrawn after any valid key is pressed. */ do_redraw = 1; ch = getch() & 0xff; if (ch >= 'A' && ch <= 'Z') ch += 'a' - 'A'; switch (ch) { case 's': SubReport = Sources_report; break; case 'd': SubReport = Destinatioreport; break; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': SubReport = Domain_report; cur_level = ch - '0'; break; case '!': SubReport = DomSrc_report; cur_level = 1; break; case 'c': case '@': SubReport = DomSrc_report; cur_level = 2; break; case '#': SubReport = DomSrc_report; cur_level = 3; break; case '$': SubReport = DomSrc_report; cur_level = 4; break; case '%': SubReport = DomSrc_report; cur_level = 5; break; case '^': SubReport = DomSrc_report; cur_level = 6; break; case '&': SubReport = DomSrc_report; cur_level = 7; break; case '*': SubReport = DomSrc_report; cur_level = 8; break; case '(': SubReport = DomSrc_report; cur_level = 9; break; case 't': SubReport = Qtypes_report; break; case 'o': SubReport = Opcodes_report; break; case 'r': SubReport = Rcodes_report; break; case 030: Quit = 1; break; case 022: ResetCounters(); break; case '?': SubReport = Help_report; break; case ' ': /* noop - just redraw the screen */ break; default: do_redraw = old_do_redraw; break; } } void gotsigalrm(int sig) { do_redraw = 1; signal(sig, gotsigalrm); } void Help_report(void) { print_func(" s - Sources list\n"); print_func(" d - Destinations list\n"); print_func(" t - Query types\n"); print_func(" o - Opcodes\n"); print_func(" r - Rcodes\n"); print_func(" 1 - 1st level Query Names" "\t! - with Sources\n"); print_func(" 2 - 2nd level Query Names" "\t@ - with Sources\n"); print_func(" 3 - 3rd level Query Names" "\t# - with Sources\n"); print_func(" 4 - 4th level Query Names" "\t$ - with Sources\n"); print_func(" 5 - 5th level Query Names" "\t%% - with Sources\n"); print_func(" 6 - 6th level Query Names" "\t^ - with Sources\n"); print_func(" 7 - 7th level Query Names" "\t& - with Sources\n"); print_func(" 8 - 8th level Query Names" "\t* - with Sources\n"); print_func(" 9 - 9th level Query Names" "\t( - with Sources\n"); print_func("^R - Reset counters\n"); print_func("^X - Exit\n"); print_func("\n"); print_func(" ? - this\n"); } char * qtype_str(unsigned int t) { char buf[30]; switch (t) { case T_A: return "A?"; break; case T_NS: return "NS?"; break; case T_CNAME: return "CNAME?"; break; case T_SOA: return "SOA?"; break; case T_PTR: return "PTR?"; break; case 13: return "HINFO?"; break; case T_MX: return "MX?"; break; case T_TXT: return "TXT?"; break; case 18: return "AFSDB?"; break; case T_SIG: return "SIG?"; break; case T_KEY: return "KEY?"; break; case 26: return "PX?"; break; case T_AAAA: return "AAAA?"; break; case T_LOC: return "LOC?"; break; case 33: return "SRV?"; break; case 35: return "NAPTR?"; break; case 38: return "A6?"; break; case 41: return "OPT?"; break; case 43: return "DS?"; break; case 44: return "SSHFP?"; break; case 46: return "RRSIG?"; break; case 47: return "NSEC?"; break; case 48: return "DNSKEY?"; break; case 50: return "NSEC3?"; break; case 51: return "NSEC3PARAM?"; break; case 52: return "TLSA?"; break; case 64: return "SVCB?"; break; case 65: return "HTTPS?"; break; case 99: return "SPF?"; break; case T_ANY: return "ANY?"; break; case 32769: return "DLV?"; break; default: if (qtypes_buf[t]) return qtypes_buf[t]; snprintf(buf, sizeof(buf), "#%u?", t); return qtypes_buf[t] = strdup(buf); } /* NOTREACHED */ } char * opcode_str(unsigned int o) { static char buf[30]; switch (o) { case 0: return "Query"; break; case 1: return "Iquery"; break; case 2: return "Status"; break; case 4: return "Notify"; break; case 5: return "Update"; break; default: if (opcodes_buf[o]) return opcodes_buf[o]; snprintf(buf, 30, "Opcode%d", o); return opcodes_buf[o] = strdup(buf); } /* NOTREACHED */ } char * rcode_str(unsigned int r) { static char buf[30]; switch (r) { case 0: return "Noerror"; break; case 1: return "Formerr"; break; case 2: return "Servfail"; break; case 3: return "Nxdomain"; break; case 4: return "Notimpl"; break; case 5: return "Refused"; break; case 6: return "Yxdomain"; break; case 7: return "Yxrrset"; break; case 8: return "Nxrrset"; break; case 9: return "Notauth"; break; case 10: return "Notzone"; break; default: if (rcodes_buf[r]) return rcodes_buf[r]; snprintf(buf, 30, "Rcode%d", r); return rcodes_buf[r] = strdup(buf); } /* NOTREACHED */ } int get_nlines(void) { if (interactive) return getmaxy(w) - 6; else return 50; } int get_ncols(void) { if (interactive) return getmaxx(w); else return 80; } const char * StringCounter_col_fmt(const SortItem * si) { StringCounter *sc = si->ptr; return sc->s; } const char * dashes(int n) { static char *buf = "-----------------------------------------------" "-----------------------------------------------------------------" "-----------------------------------------------------------------" "-----------------------------------------------------------------" "-----------------------------------------------------------------" "-----------------------------------------------------------------"; return &buf[strlen(buf) - n]; } void Table_report(SortItem * sorted, int rows, const char *col1, const char *col2, col_fmt F1, col_fmt F2, unsigned int base) { int W1 = strlen(col1); int W2 = col2 ? strlen(col2) : 0; int WC = 9; /* width of "Count" column */ int WP = 6; /* width of "Percent" column */ int i; int nlines = get_nlines(); int ncols = get_ncols(); char fmt1[64]; char fmt2[64]; unsigned int sum = 0; if (nlines > rows) nlines = rows; for (i = 0; i < nlines; i++) { const char *t = F1(sorted + i); if (W1 < strlen(t)) W1 = strlen(t); } if (W1 + 1 + WC + 1 + WP + 1 + WP + 1 > ncols) W1 = ncols - 1 - WC - 1 - WP - 1 - WP - 1; if (NULL == col2 || NULL == F2) { snprintf(fmt1, 64, "%%-%d.%ds %%%ds %%%ds %%%ds\n", W1, W1, WC, WP, WP); snprintf(fmt2, 64, "%%-%d.%ds %%%dd %%%d.1f %%%d.1f\n", W1, W1, WC, WP, WP); print_func(fmt1, col1, "Count", "%", "cum%"); print_func(fmt1, dashes(W1), dashes(WC), dashes(WP), dashes(WP)); for (i = 0; i < nlines; i++) { const char *t; sum += (sorted + i)->cnt; t = F1(sorted + i); print_func(fmt2, t, (sorted + i)->cnt, 100.0 * (sorted + i)->cnt / base, 100.0 * sum / base); } } else { for (i = 0; i < nlines; i++) { const char *t = F2(sorted + i); if (W2 < strlen(t)) W2 = strlen(t); } if (W2 + 1 + W1 + 1 + WC + 1 + WP + 1 + WP + 1 > ncols) W2 = ncols - 1 - W1 - 1 - WC - 1 - WP - 1 - WP - 1; snprintf(fmt1, 64, "%%-%d.%ds %%-%d.%ds %%%ds %%%ds %%%ds\n", W1, W1, W2, W2, WC, WP, WP); snprintf(fmt2, 64, "%%-%d.%ds %%-%d.%ds %%%dd %%%d.1f %%%d.1f\n", W1, W1, W2, W2, WC, WP, WP); print_func(fmt1, col1, col2, "Count", "%", "cum%"); print_func(fmt1, dashes(W1), dashes(W2), dashes(WC), dashes(WP), dashes(WP)); for (i = 0; i < nlines; i++) { const char *t = F1(sorted + i); const char *q = F2(sorted + i); sum += (sorted + i)->cnt; print_func(fmt2, t, q, (sorted + i)->cnt, 100.0 * (sorted + i)->cnt / base, 100.0 * sum / base); } } } void StringCounter_report(hashtbl * tbl, char *what) { unsigned int sum = 0; int sortsize = hash_count(tbl); SortItem *sortme = calloc(sortsize, sizeof(SortItem)); StringCounter *sc; hash_iter_init(tbl); sortsize = 0; while ((sc = hash_iterate(tbl))) { sum += sc->count; sortme[sortsize].cnt = sc->count; sortme[sortsize].ptr = sc; sortsize++; } qsort(sortme, sortsize, sizeof(SortItem), SortItem_cmp); Table_report(sortme, sortsize, what, NULL, StringCounter_col_fmt, NULL, sum); free(sortme); } void StringAddrCounter_free(void *p) { StringAddrCounter *ssc = p; free(ssc->straddr.str); } void Domain_report(void) { if (cur_level > max_level) { print_func("\tYou must start %s with -l %d\n", progname, cur_level); print_func("\tto collect this level of domain stats.\n", progname); return; } StringCounter_report(Domains[cur_level], "Query Name"); } const char * Qtype_col_fmt(const SortItem * si) { return si->ptr; } void Simple_report(int a[], unsigned int max, const char *name, strify * to_str) { unsigned int i; unsigned int sum = 0; unsigned int sortsize = 0; SortItem *sortme = calloc(max, sizeof(SortItem)); for (i = 0; i < max; i++) { if (0 >= a[i]) continue; sum += a[i]; sortme[sortsize].cnt = a[i]; sortme[sortsize].ptr = to_str(i); sortsize++; } qsort(sortme, sortsize, sizeof(SortItem), SortItem_cmp); Table_report(sortme, sortsize, name, NULL, Qtype_col_fmt, NULL, sum); free(sortme); } void Qtypes_report(void) { Simple_report(qtype_counts, T_MAX, "Query Type", qtype_str); } void Opcodes_report(void) { Simple_report(opcode_counts, OP_MAX, "Opcode", opcode_str); } void Rcodes_report(void) { Simple_report(rcode_counts, RC_MAX, "Rcode", rcode_str); } const char * AgentAddr_col_fmt(const SortItem * si) { AgentAddr *a = si->ptr; return anon_inet_ntoa(&a->src); } void AgentAddr_report(hashtbl * tbl, const char *what) { unsigned int sum = 0; int sortsize = hash_count(tbl); SortItem *sortme = calloc(sortsize, sizeof(SortItem)); AgentAddr *a; hash_iter_init(tbl); sortsize = 0; while ((a = hash_iterate(tbl))) { sum += a->count; sortme[sortsize].cnt = a->count; sortme[sortsize].ptr = a; sortsize++; } qsort(sortme, sortsize, sizeof(SortItem), SortItem_cmp); Table_report(sortme, sortsize, what, NULL, AgentAddr_col_fmt, NULL, sum); free(sortme); } const char * StringAddr_col1_fmt(const SortItem * si) { StringAddrCounter *ssc = si->ptr; return anon_inet_ntoa(&ssc->straddr.addr); } const char * StringAddr_col2_fmt(const SortItem * si) { StringAddrCounter *ssc = si->ptr; return ssc->straddr.str; } void StringAddrCounter_report(hashtbl * tbl, char *what1, char *what2) { unsigned int sum = 0; int sortsize = hash_count(tbl); SortItem *sortme = calloc(sortsize, sizeof(SortItem)); StringAddrCounter *ssc; hash_iter_init(tbl); sortsize = 0; while ((ssc = hash_iterate(tbl))) { sum += ssc->count; sortme[sortsize].cnt = ssc->count; sortme[sortsize].ptr = ssc; sortsize++; } qsort(sortme, sortsize, sizeof(SortItem), SortItem_cmp); Table_report(sortme, sortsize, what1, what2, StringAddr_col1_fmt, StringAddr_col2_fmt, sum); free(sortme); } void DomSrc_report(void) { if (0 == opt_count_domsrc) { print_func("\tReport disabled\n"); return; } if (cur_level > max_level) { print_func("\tYou must start %s with -l %d\n", progname, cur_level); print_func("\tto collect this level of domain stats.\n", progname); return; } StringAddrCounter_report(DomSrcs[cur_level], "Source", "Query Name"); } void Sources_report(void) { AgentAddr_report(Sources, "Sources"); } void Destinatioreport(void) { AgentAddr_report(Destinations, "Destinations"); } void report(void) { int Y = 0; time_t t; move(Y, 0); if (opt_count_queries) { print_func("Queries: %u new, %u total", query_count_intvl, query_count_total); if (Got_EOF) print_func(", EOF"); clrtoeol(); Y++; } if (opt_count_replies) { move(Y, 0); print_func("Replies: %u new, %u total", reply_count_intvl, reply_count_total); if (Got_EOF) print_func(", EOF"); clrtoeol(); Y++; } t = time(NULL); move(0, get_ncols() - 25); print_func("%s", ctime(&t)); move(Y + 1, 0); clrtobot(); if (SubReport) SubReport(); refresh(); } /* * === BEGIN FILTERS ========================================================== */ #include "known_tlds.h" #include "new_gtlds.h" void array_to_hash(const char *array[], hashtbl *hash) { int i; for (i = 0; array[i]; i++) { char *s = strdup(array[i]); assert(s); str_tolower(s); hash_add(s, s, hash); } } int UnknownTldFilter(FilterData * fd) { const char *tld = QnameToNld(fd->qname, 1); if (NULL == tld) return 1; /* tld is unknown */ if (hash_find(tld, KnownTLDs)) return 0; /* tld is known */ return 1; /* tld is unknown */ } int NewGTldFilter(FilterData * fd) { const char *tld = QnameToNld(fd->qname, 1); if (NULL == tld) return 0; /* tld is unknown */ if (hash_find(tld, NewGTLDs)) return 1; /* tld is new */ return 0; /* tld is old */ } int AforAFilter(FilterData * fd) { struct in_addr a; if (fd->qtype != T_A) return 0; return inet_aton(fd->qname, &a); } int RFC1918PtrFilter(FilterData * fd) { char *t; char q[128]; unsigned int i = 0; if (fd->qtype != T_PTR) return 0; strncpy(q, fd->qname, sizeof(q) - 1); q[sizeof(q) - 1] = '\0'; t = strstr(q, ".in-addr.arpa"); if (NULL == t) return 0; *t = '\0'; for (t = strtok(q, "."); t; t = strtok(NULL, ".")) { i >>= 8; i |= ((atoi(t) & 0xff) << 24); } if ((i & 0xff000000) == 0x0a000000) return 1; if ((i & 0xfff00000) == 0xac100000) return 1; if ((i & 0xffff0000) == 0xc0a80000) return 1; return 0; } int RcodeRefusedFilter(FilterData * fd) { return REFUSED == fd->rcode ? 1 : 0; } int RcodeServfailFilter(FilterData * fd) { return SERVFAIL == fd->rcode ? 1 : 0; } int RcodeNxdomainFilter(FilterData * fd) { return NXDOMAIN == fd->rcode ? 1 : 0; } int QnameFilter(FilterData * fd) { const char *F = opt_filter_by_name; const char *Q = fd->qname; size_t fo = strlen(F); size_t qo = strlen(Q); while (qo && fo) if (tolower(Q[--qo]) != tolower(F[--fo])) return 0; if (fo) return 0; /* didn't match all of opt_filter_by_name */ if (0 == qo) return 1; /* exact match */ if ('.' == Q[qo - 1]) return 1; /* matched on domain boundary */ return 0; } const char* BitsquatNames[] = { "FACEBOOK", "GOOGLE", "YAHOO", "YOUTUBE", "BLOGGER", NULL }; int BitsquatFilter(FilterData * fd) { char sld[10]; const char *s = QnameToNld(fd->qname, 2); int i; int j; if (0 == s) return 0; strncpy(sld, s, sizeof(sld)); sld[sizeof(sld)-1] = 0; if (!strtok(sld, ".")) return 0; for (j=0; BitsquatNames[j]; j++) if (0 == strcasecmp(sld, BitsquatNames[j])) return 0; for (i=0; sld[i]; i++) { int k; int save = sld[i]; for (k=0; k<8; k++) { int m; if (5==k) // upper/lower case bit continue; m = 1<qtype == T_ANY; } void set_filter(const char *fn) { if (0 == strcmp(fn, "unknown-tlds")) Filter = UnknownTldFilter; if (0 == strcmp(fn, "new-gtlds")) Filter = NewGTldFilter; else if (0 == strcmp(fn, "A-for-A")) Filter = AforAFilter; else if (0 == strcmp(fn, "rfc1918-ptr")) Filter = RFC1918PtrFilter; else if (0 == strcmp(fn, "refused")) Filter = RcodeRefusedFilter; else if (0 == strcmp(fn, "servfail")) Filter = RcodeServfailFilter; else if (0 == strcmp(fn, "nxdomain")) Filter = RcodeNxdomainFilter; else if (0 == strcmp(fn, "qname")) Filter = QnameFilter; else if (0 == strcmp(fn, "bitsquat")) Filter = BitsquatFilter; else if (0 == strcmp(fn, "qtype-any")) Filter = QtypeAnyFilter; else Filter = NULL; } /* * === END FILTERS ========================================================== */ void init_curses(void) { w = initscr(); cbreak(); noecho(); nodelay(w, 1); } void ResetCounters(void) { int lvl; if (NULL == Sources) Sources = hash_create(hash_buckets, my_inXaddr_hash, my_inXaddr_cmp); if (NULL == Destinations) Destinations = hash_create(hash_buckets, my_inXaddr_hash, my_inXaddr_cmp); for (lvl = 1; lvl <= max_level; lvl++) { if (NULL != Domains[lvl]) continue; Domains[lvl] = hash_create(hash_buckets, string_hash, string_cmp); if (opt_count_domsrc) DomSrcs[lvl] = hash_create(hash_buckets, stringaddr_hash, stringaddr_cmp); } query_count_intvl = 0; query_count_total = 0; reply_count_intvl = 0; reply_count_total = 0; memset(qtype_counts, 0, sizeof(qtype_counts)); memset(qclass_counts, 0, sizeof(qclass_counts)); memset(opcode_counts, 0, sizeof(opcode_counts)); memset(rcode_counts, 0, sizeof(rcode_counts)); hash_free(Sources, free); hash_free(Destinations, free); for (lvl = 1; lvl <= max_level; lvl++) { hash_free(Domains[lvl], free); if (opt_count_domsrc) hash_free(DomSrcs[lvl], StringAddrCounter_free); } memset(&last_ts, '\0', sizeof(last_ts)); } void usage(void) { fprintf(stderr, "usage: %s [opts] netdevice|savefile\n", progname); fprintf(stderr, "\t-4\tCount IPv4 packets\n"); fprintf(stderr, "\t-6\tCount IPv6 packets\n"); fprintf(stderr, "\t-Q\tCount queries\n"); fprintf(stderr, "\t-R\tCount responses\n"); fprintf(stderr, "\t-a\tAnonymize IP Addrs\n"); fprintf(stderr, "\t-b expr\tBPF program code\n"); fprintf(stderr, "\t-B num\tUse num hash table buckets (default %u)\n", hash_buckets); fprintf(stderr, "\t-i addr\tIgnore this source IP address\n"); fprintf(stderr, "\t-n name\tCount only messages in this domain\n"); fprintf(stderr, "\t-p\tDon't put interface in promiscuous mode\n"); fprintf(stderr, "\t-P\tPrint \"progress\" messages in non-interactive mode\n"); fprintf(stderr, "\t-r\tRedraw interval, in seconds\n"); fprintf(stderr, "\t-l N\tEnable domain stats up to N components\n"); fprintf(stderr, "\t-X\tDon't tabulate the \"source + query name\" stats\n"); fprintf(stderr, "\t-f\tfilter-name\n"); fprintf(stderr, "\n"); fprintf(stderr, "Available filters:\n"); fprintf(stderr, "\tunknown-tlds\n"); fprintf(stderr, "\tnew-gtlds\n"); fprintf(stderr, "\tA-for-A\n"); fprintf(stderr, "\trfc1918-ptr\n"); fprintf(stderr, "\trefused\n"); fprintf(stderr, "\tservfail\n"); fprintf(stderr, "\tnxdomain\n"); fprintf(stderr, "\tqtype-any\n"); exit(1); } int pcap_select(pcap_t * p, int sec, int usec) { fd_set R; struct timeval to; FD_ZERO(&R); FD_SET(pcap_fileno(p), &R); to.tv_sec = sec; to.tv_usec = usec; return select(pcap_fileno(p) + 1, &R, NULL, NULL, &to); } struct timeval start = {0, 0}; struct timeval now = {0, 0}; struct timeval last_progress = {0, 0}; void progress(pcap_t * p) { unsigned int msgs = query_count_total + reply_count_total; time_t wall_elapsed; double rate; gettimeofday(&now, NULL); if (now.tv_sec == last_progress.tv_sec) return; wall_elapsed = now.tv_sec - start.tv_sec; if (0 == wall_elapsed) return; rate = (double)msgs / wall_elapsed; fprintf(stderr, "%u %7.1f m/s\n", msgs, rate); last_progress = now; } int main(int argc, char *argv[]) { char errbuf[PCAP_ERRBUF_SIZE]; int x; struct stat sb; int readfile_state = 0; int redraw_interval = 1; struct itimerval redraw_itv; struct bpf_program fp; SubReport = Sources_report; progname = strdup(strrchr(argv[0], '/') ? strchr(argv[0], '/') + 1 : argv[0]); srandom(time(NULL)); memset(qtypes_buf, 0, sizeof(qtypes_buf)); memset(rcodes_buf, 0, sizeof(rcodes_buf)); memset(opcodes_buf, 0, sizeof(opcodes_buf)); KnownTLDs = hash_create(hash_buckets, string_hash, string_cmp); NewGTLDs = hash_create(hash_buckets, string_hash, string_cmp); array_to_hash(KnownTLDs_array, KnownTLDs); array_to_hash(NewGTLDs_array, NewGTLDs); while ((x = getopt(argc, argv, "46ab:B:f:i:l:n:pPr:QRvVX")) != -1) { switch (x) { case '4': opt_count_ipv4 = 1; break; case '6': opt_count_ipv6 = 1; break; case 'a': anon_flag = 1; break; case 'l': max_level = atoi(optarg); if (max_level < 1 || max_level > 9) usage(); break; case 'n': opt_filter_by_name = strdup(optarg); set_filter("qname"); break; case 'p': promisc_flag = 0; break; case 'P': progress_flag = 1; break; case 'b': bpf_program_str = strdup(optarg); break; case 'B': hash_buckets = atoi(optarg); break; case 'i': ignore_list_add_name(optarg); break; case 'f': set_filter(optarg); break; case 'r': redraw_interval = atoi(optarg); break; case 'Q': opt_count_queries = 1; break; case 'R': opt_count_replies = 1; break; case 'v': case 'V': fprintf(stderr, "dnstop Version: %s\n", Version); fprintf(stderr, "http://dnstop.measurement-factory.com/\n"); exit(0); case 'X': opt_count_domsrc = 0; break; default: usage(); break; } } argc -= optind; argv += optind; if (argc < 1) usage(); device = strdup(argv[0]); if (!strstr(bpf_program_str, "port ")) check_port = htons(53); if (0 == opt_count_queries && 0 == opt_count_replies) opt_count_queries = 1; if (0 == opt_count_ipv4 && 0 == opt_count_ipv6) opt_count_ipv4 = opt_count_ipv6 = 1; if (RcodeRefusedFilter == Filter || RcodeServfailFilter == Filter || RcodeNxdomainFilter == Filter) { opt_count_queries = 0; opt_count_replies = 1; } if (0 == stat(device, &sb)) readfile_state = 1; if (readfile_state) { pcap = pcap_open_offline(device, errbuf); } else { pcap = pcap_open_live(device, PCAP_SNAPLEN, promisc_flag, 1, errbuf); } if (NULL == pcap) { fprintf(stderr, "pcap_open_*: %s\n", errbuf); exit(1); } if (0 == isatty(1) || 0 == isatty(0)) { if (0 == readfile_state) { fprintf(stderr, "Non-interactive mode requires savefile argument\n"); exit(1); } interactive = 0; print_func = printf; } memset(&fp, '\0', sizeof(fp)); x = pcap_compile(pcap, &fp, bpf_program_str, 1, 0); if (x < 0) { fprintf(stderr, "pcap_compile failed\n"); exit(1); } x = pcap_setfilter(pcap, &fp); if (x < 0) { fprintf(stderr, "pcap_setfilter failed\n"); exit(1); } /* * non-blocking call added for Mac OS X bugfix. Sent by Max Horn. ref * http://www.tcpdump.org/lists/workers/2002/09/msg00033.html * * UPDATE: pcap_setnonblock fails on OpenBSD. Since this was a MacOS * workaround and dnstop does not require non-blocking, we'll won't * check the return status. */ pcap_setnonblock(pcap, 1, errbuf); switch (pcap_datalink(pcap)) { case DLT_EN10MB: handle_datalink = handle_ether; break; #ifdef DLT_PPP #ifdef HAVE_NET_IF_PPP_H case DLT_PPP: handle_datalink = handle_ppp; break; #endif #endif #ifdef DLT_LOOP case DLT_LOOP: handle_datalink = handle_loop; break; #endif #ifdef DLT_RAW case DLT_RAW: handle_datalink = handle_raw; break; #endif #ifdef DLT_LINUX_SLL case DLT_LINUX_SLL: handle_datalink = handle_linux_sll; break; #endif case DLT_NULL: handle_datalink = handle_null; break; default: fprintf(stderr, "unsupported data link type %d\n", pcap_datalink(pcap)); return 1; break; } ResetCounters(); gettimeofday(&start, NULL); if (interactive) { init_curses(); redraw(); if (redraw_interval) { signal(SIGALRM, gotsigalrm); redraw_itv.it_interval.tv_sec = redraw_interval; redraw_itv.it_interval.tv_usec = 0; redraw_itv.it_value.tv_sec = redraw_interval; redraw_itv.it_value.tv_usec = 0; setitimer(ITIMER_REAL, &redraw_itv, NULL); } while (0 == Quit) { if (readfile_state < 2) { /* * On some OSes select() might return 0 even when there are * packets to process. Thus, we always ignore its return value * and just call pcap_dispatch() anyway. */ if (0 == readfile_state) /* interactive */ pcap_select(pcap, 1, 0); x = pcap_dispatch(pcap, 50, handle_pcap, NULL); } if (0 == x && 1 == readfile_state) { /* block on keyboard until user quits */ readfile_state++; nodelay(w, 0); do_redraw = 1; Got_EOF = 1; } if (do_redraw || 0 == redraw_interval) redraw(); keyboard(); } endwin(); /* klin, Thu Nov 28 08:56:51 2002 */ } else { while (pcap_dispatch(pcap, 1, handle_pcap, NULL)) { if (progress_flag && 0 == ((query_count_total + reply_count_total) & 0x3ff)) progress(pcap); } cron_pre(); Sources_report(); print_func("\n"); Destinatioreport(); print_func("\n"); Qtypes_report(); print_func("\n"); Opcodes_report(); print_func("\n"); Rcodes_report(); for (cur_level = 1; cur_level <= max_level; cur_level++) { print_func("\n"); Domain_report(); } for (cur_level = 1; opt_count_domsrc && cur_level <= max_level; cur_level++) { print_func("\n"); DomSrc_report(); } } pcap_close(pcap); return 0; } dnstop/hashtbl.h0000664000175100017510000000230614661103220011755 0ustar mhmh/* * $Id$ * * http://dnstop.measurement-factory.com/ * * Copyright (c) 2006, The Measurement Factory, Inc. All rights * reserved. See the LICENSE file for details. */ typedef struct _hashitem { const void *key; void *data; struct _hashitem *next; } hashitem; typedef unsigned int hashfunc(const void *key); typedef int hashkeycmp(const void *a, const void *b); typedef struct { unsigned int modulus; hashitem **items; hashfunc *hasher; hashkeycmp *keycmp; struct { hashitem *next; unsigned int slot; } iter; } hashtbl; hashtbl *hash_create(int N, hashfunc *, hashkeycmp *); int hash_add(const void *key, void *data, hashtbl *); void *hash_find(const void *key, hashtbl *); void hash_iter_init(hashtbl *); void *hash_iterate(hashtbl *); int hash_count(hashtbl *); void hash_free(hashtbl *, void freefunc(void *)); extern uint32_t hashlittle(const void *key, size_t length, uint32_t initval); extern uint32_t hashbig(const void *key, size_t length, uint32_t initval); extern uint32_t hashword(const uint32_t *k, size_t length, uint32_t initval); #ifndef BYTE_ORDER #define hashendian hashlittle #elif BYTE_ORDER == BIG_ENDIAN #define hashendian hashbig #else #define hashendian hashlittle #endif dnstop/lookup3.c0000664000175100017510000010322114661103220011715 0ustar mhmh/* ------------------------------------------------------------------------------- lookup3.c, by Bob Jenkins, May 2006, Public Domain. These are functions for producing 32-bit hashes for hash table lookup. hashword(), hashlittle(), hashlittle2(), hashbig(), mix(), and final() are externally useful functions. Routines to test the hash are included if SELF_TEST is defined. You can use this free for any purpose. It's in the public domain. It has no warranty. You probably want to use hashlittle(). hashlittle() and hashbig() hash byte arrays. hashlittle() is is faster than hashbig() on little-endian machines. Intel and AMD are little-endian machines. On second thought, you probably want hashlittle2(), which is identical to hashlittle() except it returns two 32-bit hashes for the price of one. You could implement hashbig2() if you wanted but I haven't bothered here. If you want to find a hash of, say, exactly 7 integers, do a = i1; b = i2; c = i3; mix(a,b,c); a += i4; b += i5; c += i6; mix(a,b,c); a += i7; final(a,b,c); then use c as the hash value. If you have a variable length array of 4-byte integers to hash, use hashword(). If you have a byte array (like a character string), use hashlittle(). If you have several byte arrays, or a mix of things, see the comments above hashlittle(). Why is this so big? I read 12 bytes at a time into 3 4-byte integers, then mix those integers. This is fast (you can do a lot more thorough mixing with 12*3 instructions on 3 integers than you can with 3 instructions on 1 byte), but shoehorning those bytes into integers efficiently is messy. ------------------------------------------------------------------------------- */ #define SELF_TEST 0 #include "config.h" #include /* defines printf for tests */ #include /* defines time_t for timings in the test */ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_STDINT_H #include /* defines uint32_t etc */ #endif #include /* attempt to define endianness */ #ifdef HAVE_ENDIAN_H # include /* attempt to define endianness */ #endif /* * My best guess at if you are big-endian or little-endian. This may * need adjustment. */ #if (defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \ __BYTE_ORDER == __LITTLE_ENDIAN) || \ (defined(i386) || defined(__i386__) || defined(__i486__) || \ defined(__i586__) || defined(__i686__) || defined(vax) || defined(MIPSEL)) # define HASH_LITTLE_ENDIAN 1 # define HASH_BIG_ENDIAN 0 #elif (defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && \ __BYTE_ORDER == __BIG_ENDIAN) || \ (defined(sparc) || defined(POWERPC) || defined(mc68000) || defined(sel)) # define HASH_LITTLE_ENDIAN 0 # define HASH_BIG_ENDIAN 1 #else # define HASH_LITTLE_ENDIAN 0 # define HASH_BIG_ENDIAN 0 #endif #define hashsize(n) ((uint32_t)1<<(n)) #define hashmask(n) (hashsize(n)-1) #define rot(x,k) (((x)<<(k)) | ((x)>>(32-(k)))) /* ------------------------------------------------------------------------------- mix -- mix 3 32-bit values reversibly. This is reversible, so any information in (a,b,c) before mix() is still in (a,b,c) after mix(). If four pairs of (a,b,c) inputs are run through mix(), or through mix() in reverse, there are at least 32 bits of the output that are sometimes the same for one pair and different for another pair. This was tested for: * pairs that differed by one bit, by two bits, in any combination of top bits of (a,b,c), or in any combination of bottom bits of (a,b,c). * "differ" is defined as +, -, ^, or ~^. For + and -, I transformed the output delta to a Gray code (a^(a>>1)) so a string of 1's (as is commonly produced by subtraction) look like a single 1-bit difference. * the base values were pseudorandom, all zero but one bit set, or all zero plus a counter that starts at zero. Some k values for my "a-=c; a^=rot(c,k); c+=b;" arrangement that satisfy this are 4 6 8 16 19 4 9 15 3 18 27 15 14 9 3 7 17 3 Well, "9 15 3 18 27 15" didn't quite get 32 bits diffing for "differ" defined as + with a one-bit base and a two-bit delta. I used http://burtleburtle.net/bob/hash/avalanche.html to choose the operations, constants, and arrangements of the variables. This does not achieve avalanche. There are input bits of (a,b,c) that fail to affect some output bits of (a,b,c), especially of a. The most thoroughly mixed value is c, but it doesn't really even achieve avalanche in c. This allows some parallelism. Read-after-writes are good at doubling the number of bits affected, so the goal of mixing pulls in the opposite direction as the goal of parallelism. I did what I could. Rotates seem to cost as much as shifts on every machine I could lay my hands on, and rotates are much kinder to the top and bottom bits, so I used rotates. ------------------------------------------------------------------------------- */ #define mix(a,b,c) \ { \ a -= c; a ^= rot(c, 4); c += b; \ b -= a; b ^= rot(a, 6); a += c; \ c -= b; c ^= rot(b, 8); b += a; \ a -= c; a ^= rot(c,16); c += b; \ b -= a; b ^= rot(a,19); a += c; \ c -= b; c ^= rot(b, 4); b += a; \ } /* ------------------------------------------------------------------------------- final -- final mixing of 3 32-bit values (a,b,c) into c Pairs of (a,b,c) values differing in only a few bits will usually produce values of c that look totally different. This was tested for * pairs that differed by one bit, by two bits, in any combination of top bits of (a,b,c), or in any combination of bottom bits of (a,b,c). * "differ" is defined as +, -, ^, or ~^. For + and -, I transformed the output delta to a Gray code (a^(a>>1)) so a string of 1's (as is commonly produced by subtraction) look like a single 1-bit difference. * the base values were pseudorandom, all zero but one bit set, or all zero plus a counter that starts at zero. These constants passed: 14 11 25 16 4 14 24 12 14 25 16 4 14 24 and these came close: 4 8 15 26 3 22 24 10 8 15 26 3 22 24 11 8 15 26 3 22 24 ------------------------------------------------------------------------------- */ #define final(a,b,c) \ { \ c ^= b; c -= rot(b,14); \ a ^= c; a -= rot(c,11); \ b ^= a; b -= rot(a,25); \ c ^= b; c -= rot(b,16); \ a ^= c; a -= rot(c,4); \ b ^= a; b -= rot(a,14); \ c ^= b; c -= rot(b,24); \ } /* -------------------------------------------------------------------- This works on all machines. To be useful, it requires -- that the key be an array of uint32_t's, and -- that the length be the number of uint32_t's in the key The function hashword() is identical to hashlittle() on little-endian machines, and identical to hashbig() on big-endian machines, except that the length has to be measured in uint32_ts rather than in bytes. hashlittle() is more complicated than hashword() only because hashlittle() has to dance around fitting the key bytes into registers. -------------------------------------------------------------------- */ uint32_t hashword( const uint32_t *k, /* the key, an array of uint32_t values */ size_t length, /* the length of the key, in uint32_ts */ uint32_t initval) /* the previous hash, or an arbitrary value */ { uint32_t a,b,c; /* Set up the internal state */ a = b = c = 0xdeadbeef + (((uint32_t)length)<<2) + initval; /*------------------------------------------------- handle most of the key */ while (length > 3) { a += k[0]; b += k[1]; c += k[2]; mix(a,b,c); length -= 3; k += 3; } /*------------------------------------------- handle the last 3 uint32_t's */ switch(length) /* all the case statements fall through */ { case 3 : c+=k[2]; case 2 : b+=k[1]; case 1 : a+=k[0]; final(a,b,c); case 0: /* case 0: nothing left to add */ break; } /*------------------------------------------------------ report the result */ return c; } /* -------------------------------------------------------------------- hashword2() -- same as hashword(), but take two seeds and return two 32-bit values. pc and pb must both be nonnull, and *pc and *pb must both be initialized with seeds. If you pass in (*pb)==0, the output (*pc) will be the same as the return value from hashword(). -------------------------------------------------------------------- */ void hashword2 ( const uint32_t *k, /* the key, an array of uint32_t values */ size_t length, /* the length of the key, in uint32_ts */ uint32_t *pc, /* IN: seed OUT: primary hash value */ uint32_t *pb) /* IN: more seed OUT: secondary hash value */ { uint32_t a,b,c; /* Set up the internal state */ a = b = c = 0xdeadbeef + ((uint32_t)(length<<2)) + *pc; c += *pb; /*------------------------------------------------- handle most of the key */ while (length > 3) { a += k[0]; b += k[1]; c += k[2]; mix(a,b,c); length -= 3; k += 3; } /*------------------------------------------- handle the last 3 uint32_t's */ switch(length) /* all the case statements fall through */ { case 3 : c+=k[2]; case 2 : b+=k[1]; case 1 : a+=k[0]; final(a,b,c); case 0: /* case 0: nothing left to add */ break; } /*------------------------------------------------------ report the result */ *pc=c; *pb=b; } /* ------------------------------------------------------------------------------- hashlittle() -- hash a variable-length key into a 32-bit value k : the key (the unaligned variable-length array of bytes) length : the length of the key, counting by bytes initval : can be any 4-byte value Returns a 32-bit value. Every bit of the key affects every bit of the return value. Two keys differing by one or two bits will have totally different hash values. The best hash table sizes are powers of 2. There is no need to do mod a prime (mod is sooo slow!). If you need less than 32 bits, use a bitmask. For example, if you need only 10 bits, do h = (h & hashmask(10)); In which case, the hash table should have hashsize(10) elements. If you are hashing n strings (uint8_t **)k, do it like this: for (i=0, h=0; i 12) { a += k[0]; b += k[1]; c += k[2]; mix(a,b,c); length -= 12; k += 3; } /*----------------------------- handle the last (probably partial) block */ /* * "k[2]&0xffffff" actually reads beyond the end of the string, but * then masks off the part it's not allowed to read. Because the * string is aligned, the masked-off tail is in the same word as the * rest of the string. Every machine with memory protection I've seen * does it on word boundaries, so is OK with this. But VALGRIND will * still catch it and complain. The masking trick does make the hash * noticably faster for short strings (like English words). */ #ifndef VALGRIND switch(length) { case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; case 11: c+=k[2]&0xffffff; b+=k[1]; a+=k[0]; break; case 10: c+=k[2]&0xffff; b+=k[1]; a+=k[0]; break; case 9 : c+=k[2]&0xff; b+=k[1]; a+=k[0]; break; case 8 : b+=k[1]; a+=k[0]; break; case 7 : b+=k[1]&0xffffff; a+=k[0]; break; case 6 : b+=k[1]&0xffff; a+=k[0]; break; case 5 : b+=k[1]&0xff; a+=k[0]; break; case 4 : a+=k[0]; break; case 3 : a+=k[0]&0xffffff; break; case 2 : a+=k[0]&0xffff; break; case 1 : a+=k[0]&0xff; break; case 0 : return c; /* zero length strings require no mixing */ } #else /* make valgrind happy */ k8 = (const uint8_t *)k; switch(length) { case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ case 10: c+=((uint32_t)k8[9])<<8; /* fall through */ case 9 : c+=k8[8]; /* fall through */ case 8 : b+=k[1]; a+=k[0]; break; case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ case 6 : b+=((uint32_t)k8[5])<<8; /* fall through */ case 5 : b+=k8[4]; /* fall through */ case 4 : a+=k[0]; break; case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ case 2 : a+=((uint32_t)k8[1])<<8; /* fall through */ case 1 : a+=k8[0]; break; case 0 : return c; } #endif /* !valgrind */ } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) { const uint16_t *k = (const uint16_t *)key; /* read 16-bit chunks */ const uint8_t *k8; /*--------------- all but last block: aligned reads and different mixing */ while (length > 12) { a += k[0] + (((uint32_t)k[1])<<16); b += k[2] + (((uint32_t)k[3])<<16); c += k[4] + (((uint32_t)k[5])<<16); mix(a,b,c); length -= 12; k += 6; } /*----------------------------- handle the last (probably partial) block */ k8 = (const uint8_t *)k; switch(length) { case 12: c+=k[4]+(((uint32_t)k[5])<<16); b+=k[2]+(((uint32_t)k[3])<<16); a+=k[0]+(((uint32_t)k[1])<<16); break; case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ case 10: c+=k[4]; b+=k[2]+(((uint32_t)k[3])<<16); a+=k[0]+(((uint32_t)k[1])<<16); break; case 9 : c+=k8[8]; /* fall through */ case 8 : b+=k[2]+(((uint32_t)k[3])<<16); a+=k[0]+(((uint32_t)k[1])<<16); break; case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ case 6 : b+=k[2]; a+=k[0]+(((uint32_t)k[1])<<16); break; case 5 : b+=k8[4]; /* fall through */ case 4 : a+=k[0]+(((uint32_t)k[1])<<16); break; case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ case 2 : a+=k[0]; break; case 1 : a+=k8[0]; break; case 0 : return c; /* zero length requires no mixing */ } } else { /* need to read the key one byte at a time */ const uint8_t *k = (const uint8_t *)key; /*--------------- all but the last block: affect some 32 bits of (a,b,c) */ while (length > 12) { a += k[0]; a += ((uint32_t)k[1])<<8; a += ((uint32_t)k[2])<<16; a += ((uint32_t)k[3])<<24; b += k[4]; b += ((uint32_t)k[5])<<8; b += ((uint32_t)k[6])<<16; b += ((uint32_t)k[7])<<24; c += k[8]; c += ((uint32_t)k[9])<<8; c += ((uint32_t)k[10])<<16; c += ((uint32_t)k[11])<<24; mix(a,b,c); length -= 12; k += 12; } /*-------------------------------- last block: affect all 32 bits of (c) */ switch(length) /* all the case statements fall through */ { case 12: c+=((uint32_t)k[11])<<24; case 11: c+=((uint32_t)k[10])<<16; case 10: c+=((uint32_t)k[9])<<8; case 9 : c+=k[8]; case 8 : b+=((uint32_t)k[7])<<24; case 7 : b+=((uint32_t)k[6])<<16; case 6 : b+=((uint32_t)k[5])<<8; case 5 : b+=k[4]; case 4 : a+=((uint32_t)k[3])<<24; case 3 : a+=((uint32_t)k[2])<<16; case 2 : a+=((uint32_t)k[1])<<8; case 1 : a+=k[0]; break; case 0 : return c; } } final(a,b,c); return c; } /* * hashlittle2: return 2 32-bit hash values * * This is identical to hashlittle(), except it returns two 32-bit hash * values instead of just one. This is good enough for hash table * lookup with 2^^64 buckets, or if you want a second hash if you're not * happy with the first, or if you want a probably-unique 64-bit ID for * the key. *pc is better mixed than *pb, so use *pc first. If you want * a 64-bit value do something like "*pc + (((uint64_t)*pb)<<32)". */ void hashlittle2( const void *key, /* the key to hash */ size_t length, /* length of the key */ uint32_t *pc, /* IN: primary initval, OUT: primary hash */ uint32_t *pb) /* IN: secondary initval, OUT: secondary hash */ { uint32_t a,b,c; /* internal state */ union { const void *ptr; size_t i; } u; /* needed for Mac Powerbook G4 */ /* Set up the internal state */ a = b = c = 0xdeadbeef + ((uint32_t)length) + *pc; c += *pb; u.ptr = key; if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) { const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */ #ifdef VALGRIND const uint8_t *k8; #endif /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */ while (length > 12) { a += k[0]; b += k[1]; c += k[2]; mix(a,b,c); length -= 12; k += 3; } /*----------------------------- handle the last (probably partial) block */ /* * "k[2]&0xffffff" actually reads beyond the end of the string, but * then masks off the part it's not allowed to read. Because the * string is aligned, the masked-off tail is in the same word as the * rest of the string. Every machine with memory protection I've seen * does it on word boundaries, so is OK with this. But VALGRIND will * still catch it and complain. The masking trick does make the hash * noticably faster for short strings (like English words). */ #ifndef VALGRIND switch(length) { case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; case 11: c+=k[2]&0xffffff; b+=k[1]; a+=k[0]; break; case 10: c+=k[2]&0xffff; b+=k[1]; a+=k[0]; break; case 9 : c+=k[2]&0xff; b+=k[1]; a+=k[0]; break; case 8 : b+=k[1]; a+=k[0]; break; case 7 : b+=k[1]&0xffffff; a+=k[0]; break; case 6 : b+=k[1]&0xffff; a+=k[0]; break; case 5 : b+=k[1]&0xff; a+=k[0]; break; case 4 : a+=k[0]; break; case 3 : a+=k[0]&0xffffff; break; case 2 : a+=k[0]&0xffff; break; case 1 : a+=k[0]&0xff; break; case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ } #else /* make valgrind happy */ k8 = (const uint8_t *)k; switch(length) { case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ case 10: c+=((uint32_t)k8[9])<<8; /* fall through */ case 9 : c+=k8[8]; /* fall through */ case 8 : b+=k[1]; a+=k[0]; break; case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ case 6 : b+=((uint32_t)k8[5])<<8; /* fall through */ case 5 : b+=k8[4]; /* fall through */ case 4 : a+=k[0]; break; case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ case 2 : a+=((uint32_t)k8[1])<<8; /* fall through */ case 1 : a+=k8[0]; break; case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ } #endif /* !valgrind */ } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) { const uint16_t *k = (const uint16_t *)key; /* read 16-bit chunks */ const uint8_t *k8; /*--------------- all but last block: aligned reads and different mixing */ while (length > 12) { a += k[0] + (((uint32_t)k[1])<<16); b += k[2] + (((uint32_t)k[3])<<16); c += k[4] + (((uint32_t)k[5])<<16); mix(a,b,c); length -= 12; k += 6; } /*----------------------------- handle the last (probably partial) block */ k8 = (const uint8_t *)k; switch(length) { case 12: c+=k[4]+(((uint32_t)k[5])<<16); b+=k[2]+(((uint32_t)k[3])<<16); a+=k[0]+(((uint32_t)k[1])<<16); break; case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ case 10: c+=k[4]; b+=k[2]+(((uint32_t)k[3])<<16); a+=k[0]+(((uint32_t)k[1])<<16); break; case 9 : c+=k8[8]; /* fall through */ case 8 : b+=k[2]+(((uint32_t)k[3])<<16); a+=k[0]+(((uint32_t)k[1])<<16); break; case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ case 6 : b+=k[2]; a+=k[0]+(((uint32_t)k[1])<<16); break; case 5 : b+=k8[4]; /* fall through */ case 4 : a+=k[0]+(((uint32_t)k[1])<<16); break; case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ case 2 : a+=k[0]; break; case 1 : a+=k8[0]; break; case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ } } else { /* need to read the key one byte at a time */ const uint8_t *k = (const uint8_t *)key; /*--------------- all but the last block: affect some 32 bits of (a,b,c) */ while (length > 12) { a += k[0]; a += ((uint32_t)k[1])<<8; a += ((uint32_t)k[2])<<16; a += ((uint32_t)k[3])<<24; b += k[4]; b += ((uint32_t)k[5])<<8; b += ((uint32_t)k[6])<<16; b += ((uint32_t)k[7])<<24; c += k[8]; c += ((uint32_t)k[9])<<8; c += ((uint32_t)k[10])<<16; c += ((uint32_t)k[11])<<24; mix(a,b,c); length -= 12; k += 12; } /*-------------------------------- last block: affect all 32 bits of (c) */ switch(length) /* all the case statements fall through */ { case 12: c+=((uint32_t)k[11])<<24; case 11: c+=((uint32_t)k[10])<<16; case 10: c+=((uint32_t)k[9])<<8; case 9 : c+=k[8]; case 8 : b+=((uint32_t)k[7])<<24; case 7 : b+=((uint32_t)k[6])<<16; case 6 : b+=((uint32_t)k[5])<<8; case 5 : b+=k[4]; case 4 : a+=((uint32_t)k[3])<<24; case 3 : a+=((uint32_t)k[2])<<16; case 2 : a+=((uint32_t)k[1])<<8; case 1 : a+=k[0]; break; case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ } } final(a,b,c); *pc=c; *pb=b; } /* * hashbig(): * This is the same as hashword() on big-endian machines. It is different * from hashlittle() on all machines. hashbig() takes advantage of * big-endian byte ordering. */ uint32_t hashbig( const void *key, size_t length, uint32_t initval) { uint32_t a,b,c; union { const void *ptr; size_t i; } u; /* to cast key to (size_t) happily */ /* Set up the internal state */ a = b = c = 0xdeadbeef + ((uint32_t)length) + initval; u.ptr = key; if (HASH_BIG_ENDIAN && ((u.i & 0x3) == 0)) { const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */ #ifdef VALGRIND const uint8_t *k8; #endif /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */ while (length > 12) { a += k[0]; b += k[1]; c += k[2]; mix(a,b,c); length -= 12; k += 3; } /*----------------------------- handle the last (probably partial) block */ /* * "k[2]<<8" actually reads beyond the end of the string, but * then shifts out the part it's not allowed to read. Because the * string is aligned, the illegal read is in the same word as the * rest of the string. Every machine with memory protection I've seen * does it on word boundaries, so is OK with this. But VALGRIND will * still catch it and complain. The masking trick does make the hash * noticably faster for short strings (like English words). */ #ifndef VALGRIND switch(length) { case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; case 11: c+=k[2]&0xffffff00; b+=k[1]; a+=k[0]; break; case 10: c+=k[2]&0xffff0000; b+=k[1]; a+=k[0]; break; case 9 : c+=k[2]&0xff000000; b+=k[1]; a+=k[0]; break; case 8 : b+=k[1]; a+=k[0]; break; case 7 : b+=k[1]&0xffffff00; a+=k[0]; break; case 6 : b+=k[1]&0xffff0000; a+=k[0]; break; case 5 : b+=k[1]&0xff000000; a+=k[0]; break; case 4 : a+=k[0]; break; case 3 : a+=k[0]&0xffffff00; break; case 2 : a+=k[0]&0xffff0000; break; case 1 : a+=k[0]&0xff000000; break; case 0 : return c; /* zero length strings require no mixing */ } #else /* make valgrind happy */ k8 = (const uint8_t *)k; switch(length) /* all the case statements fall through */ { case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; case 11: c+=((uint32_t)k8[10])<<8; /* fall through */ case 10: c+=((uint32_t)k8[9])<<16; /* fall through */ case 9 : c+=((uint32_t)k8[8])<<24; /* fall through */ case 8 : b+=k[1]; a+=k[0]; break; case 7 : b+=((uint32_t)k8[6])<<8; /* fall through */ case 6 : b+=((uint32_t)k8[5])<<16; /* fall through */ case 5 : b+=((uint32_t)k8[4])<<24; /* fall through */ case 4 : a+=k[0]; break; case 3 : a+=((uint32_t)k8[2])<<8; /* fall through */ case 2 : a+=((uint32_t)k8[1])<<16; /* fall through */ case 1 : a+=((uint32_t)k8[0])<<24; break; case 0 : return c; } #endif /* !VALGRIND */ } else { /* need to read the key one byte at a time */ const uint8_t *k = (const uint8_t *)key; /*--------------- all but the last block: affect some 32 bits of (a,b,c) */ while (length > 12) { a += ((uint32_t)k[0])<<24; a += ((uint32_t)k[1])<<16; a += ((uint32_t)k[2])<<8; a += ((uint32_t)k[3]); b += ((uint32_t)k[4])<<24; b += ((uint32_t)k[5])<<16; b += ((uint32_t)k[6])<<8; b += ((uint32_t)k[7]); c += ((uint32_t)k[8])<<24; c += ((uint32_t)k[9])<<16; c += ((uint32_t)k[10])<<8; c += ((uint32_t)k[11]); mix(a,b,c); length -= 12; k += 12; } /*-------------------------------- last block: affect all 32 bits of (c) */ switch(length) /* all the case statements fall through */ { case 12: c+=k[11]; case 11: c+=((uint32_t)k[10])<<8; case 10: c+=((uint32_t)k[9])<<16; case 9 : c+=((uint32_t)k[8])<<24; case 8 : b+=k[7]; case 7 : b+=((uint32_t)k[6])<<8; case 6 : b+=((uint32_t)k[5])<<16; case 5 : b+=((uint32_t)k[4])<<24; case 4 : a+=k[3]; case 3 : a+=((uint32_t)k[2])<<8; case 2 : a+=((uint32_t)k[1])<<16; case 1 : a+=((uint32_t)k[0])<<24; break; case 0 : return c; } } final(a,b,c); return c; } #if SELF_TEST /* used for timings */ void driver1() { uint8_t buf[256]; uint32_t i; uint32_t h=0; time_t a,z; time(&a); for (i=0; i<256; ++i) buf[i] = 'x'; for (i=0; i<1; ++i) { h = hashlittle(&buf[0],1,h); } time(&z); if (z-a > 0) printf("time %d %.8x\n", z-a, h); } /* check that every input bit changes every output bit half the time */ #define HASHSTATE 1 #define HASHLEN 1 #define MAXPAIR 60 #define MAXLEN 70 void driver2() { uint8_t qa[MAXLEN+1], qb[MAXLEN+2], *a = &qa[0], *b = &qb[1]; uint32_t c[HASHSTATE], d[HASHSTATE], i=0, j=0, k, l, m=0, z; uint32_t e[HASHSTATE],f[HASHSTATE],g[HASHSTATE],h[HASHSTATE]; uint32_t x[HASHSTATE],y[HASHSTATE]; uint32_t hlen; printf("No more than %d trials should ever be needed \n",MAXPAIR/2); for (hlen=0; hlen < MAXLEN; ++hlen) { z=0; for (i=0; i>(8-j)); c[0] = hashlittle(a, hlen, m); b[i] ^= ((k+1)<>(8-j)); d[0] = hashlittle(b, hlen, m); /* check every bit is 1, 0, set, and not set at least once */ for (l=0; lz) z=k; if (k==MAXPAIR) { printf("Some bit didn't change: "); printf("%.8x %.8x %.8x %.8x %.8x %.8x ", e[0],f[0],g[0],h[0],x[0],y[0]); printf("i %d j %d m %d len %d\n", i, j, m, hlen); } if (z==MAXPAIR) goto done; } } } done: if (z < MAXPAIR) { printf("Mix success %2d bytes %2d initvals ",i,m); printf("required %d trials\n", z/2); } } printf("\n"); } /* Check for reading beyond the end of the buffer and alignment problems */ void driver3() { uint8_t buf[MAXLEN+20], *b; uint32_t len; uint8_t q[] = "This is the time for all good men to come to the aid of their country..."; uint32_t h; uint8_t qq[] = "xThis is the time for all good men to come to the aid of their country..."; uint32_t i; uint8_t qqq[] = "xxThis is the time for all good men to come to the aid of their country..."; uint32_t j; uint8_t qqqq[] = "xxxThis is the time for all good men to come to the aid of their country..."; uint32_t ref,x,y; uint8_t *p; printf("Endianness. These lines should all be the same (for values filled in):\n"); printf("%.8x %.8x %.8x\n", hashword((const uint32_t *)q, (sizeof(q)-1)/4, 13), hashword((const uint32_t *)q, (sizeof(q)-5)/4, 13), hashword((const uint32_t *)q, (sizeof(q)-9)/4, 13)); p = q; printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); p = &qq[1]; printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); p = &qqq[2]; printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); p = &qqqq[3]; printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); printf("\n"); /* check that hashlittle2 and hashlittle produce the same results */ i=47; j=0; hashlittle2(q, sizeof(q), &i, &j); if (hashlittle(q, sizeof(q), 47) != i) printf("hashlittle2 and hashlittle mismatch\n"); /* check that hashword2 and hashword produce the same results */ len = 0xdeadbeef; i=47, j=0; hashword2(&len, 1, &i, &j); if (hashword(&len, 1, 47) != i) printf("hashword2 and hashword mismatch %x %x\n", i, hashword(&len, 1, 47)); /* check hashlittle doesn't read before or after the ends of the string */ for (h=0, b=buf+1; h<8; ++h, ++b) { for (i=0; i #endif #ifdef HAVE_ARPA_INET_H #include #endif ]) AC_CHECK_HEADERS([net/if_ppp.h], [], [], AC_INCLUDES_DEFAULT [ #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_ARPA_INET_H #include #endif ]) # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_TYPE_OFF_T AC_TYPE_SIZE_T AC_HEADER_TIME AC_TYPE_UINT16_T AC_TYPE_UINT32_T AC_TYPE_UINT8_T AC_CHECK_TYPES([struct bpf_timeval], [], [], [ AC_INCLUDES_DEFAULT #include ]) # Checks for library functions. AC_FUNC_MALLOC AC_FUNC_SELECT_ARGTYPES AC_TYPE_SIGNAL AC_FUNC_STAT AC_CHECK_FUNCS([memset select strchr strdup strrchr strstr]) OPTFLAGS='' AC_ARG_ENABLE(ipv6, AS_HELP_STRING([--disable-ipv6], [Enable IPv6 support @<:@default=yes@:>@]), [ if test "$enableval" = "no" ; then enable_ipv6=no ; else enable_ipv6=yes ; fi ], [ enable_ipv6=yes ]) if test "$enable_ipv6" = "yes" ; then AC_SUBST(OPTFLAGS, ["$OPTFLAGS -DUSE_IPV6=1"]) fi AC_CONFIG_FILES([Makefile]) AC_OUTPUT dnstop/dnstop.80000664000175100017510000001314314661103220011560 0ustar mhmh.\" $Id$ .\" .\" manpage written by jose@monkey.org .\" .Dd 21 March, 2008 .Dt DNSTOP 8 .Os .Sh NAME .Nm dnstop .Nd displays various tables of DNS traffic on your network .Sh SYNOPSIS .Nm .Op Fl 46apsQR .Op Fl b Ar expression .Op Fl i Ar address .Op Fl f Ar filter .Op Fl r Ar interval .Op Ar device .Op Ar savefile .Sh DESCRIPTION .Nm is a small tool to listen on .Ar device or to parse the file .Ar savefile and collect and print statistics on the local network's DNS traffic. You must have read access to .Pa /dev/bpf\&* . .Sh COMMAND LINE OPTIONS .Pp The options are as follows: .Bl -tag -width Ds .It Fl 4 count only messages with IPv4 addresses .It Fl 6 count only messages with IPv6 addresses .It Fl Q count only DNS query messages .It Fl R count only DNS reply messages .It Fl a anonymize addresses .It Fl b Ar expression BPF filter expression .br (default: udp port 53) .It Fl i Ar address ignore select addresses .It Fl p Do not put the interface into promiscuous mode. .It Fl r Redraw interval (seconds). .It Fl l Ar level keep counts on names up to .Pa level domain name levels. .Pp For example, with -l 2 (the default), .Nm will keep two tables: one with top-level domain names, and another with second-level domain names. Increasing the .Pa level provides more details, but also requires more memory and CPU. .\" .It Fl f input filter name .Pp The "unknown-tlds" filter includes only queries for TLDs that are bogus. Useful for identifying hosts/servers that leak queries for things like "localhost" or "workgroup." .Pp The "new-gtlds" filter includes only queries for the new gTLD program of 2013/2014. Useful for identifying hosts/servers that use names which may result in future collisions and problems when new gTLDs become active. .Pp The "A-for-A" filter includes only A queries for names that are already IP addresses. Certain Microsoft Windows DNS servers have a known bug that forward these queries. .Pp The "rfc1918-ptr" filter includes only PTR queries for addresses in RFC1918 space. These should never leak from inside an organization. .Pp The "refused" filter, when used with the .Fl R option, tells .Nm to count only replies with rcode REFUSED. .Pp The "servfail" filter, when used with the .Fl R option, tells .Nm to count only replies with rcode SERVFAIL. .Pp The "nxdomain" filter, when used with the .Fl R option, tells .Nm to count only replies with rcode NXDOMAIN. .Pp The "qtype-any" filter tells .Nm to count only message of type ANY. .\" .It Fl n Ar name Only count messages within the domain .Ar name .It Fl P Print "progress" messages on stderr when in non-interactive mode. .It Fl B Ar buckets Use .Pa buckets hash table buckets. .It Fl X Do not tabulate the sources + query name counters. This can significantly reduce memory usage on busy servers and large savefiles. .It Ar savefile a captured network trace in .Cm pcap format .It Ar device ethernet device (ie fxp0) .El .Sh RUN TIME OPTIONS .Pp While running, the following options are available to alter the display: .Bl -tag -width Ds .It s display the source address table .It d display the destination address table .It t display the breakdown of query types seen .It r display the breakdown of response codes seen .It o display the breakdown of opcodes seen .It 1 show 1st level query names .It 2 show 2nd level query names .It 3 show 3rd level query names .It 4 show 4th level query names .It 5 show 5th level query names .It 6 show 6th level query names .It 7 show 7th level query names .It 8 show 8th level query names .It 9 show 9th level query names .It ! show sources + 1st level query names .It @ show sources + 2nd level query names .It # show sources + 3rd level query names .It $ show sources + 4th level query names .It % show sources + 5th level query names .It ^ show sources + 6th level query names .It & show sources + 7th level query names .It * show sources + 8th level query names .It ( show sources + 9th level query names .It ^R reset the counters .It ^X exit the program .It space redraw .It ? help .El .Pp .Sh NON-INTERACTIVE MODE If stdout is not a tty, .Nm runs in non-interactive mode. In this case, you must supply a savefile for reading, instead of capturing live packets. After reading the entire savefile, .Nm prints the top 50 entries for each table. .Pp .Sh HOW MESSAGES ARE COUNTED By default .Nm examines only query messages and ignores replies. In this case the response code table is meaningless and will likely show 100% "Noerror." .Pp If you supply (only) the .Fl R command line option, .Nm examines replies and ignores queries. This allows you to see meaningful response code values, as well as all the other tables. In this case all the query attributes (such as type and name) are taken from the Question section of the reply. .Pp Note, however, that it is common for a stream of DNS messages to contain more queries than replies. This could happen, for example, if the server is too busy to respond to every single query, or if the server is designed to ignore malformed query messages. Therefore, you might want to examine both queries and replies by giving both .Fl R and .Fl Q command line options. In this case, only the response code counts are taken from the replies and all other attributes are taken from the queries. .Pp .Sh AUTHORS .Bl -tag -width xx -compact .It Pa Duane Wessels (wessels@measurement-factory.com) .It Pa Mark Foster (mark@foster.cc) .It Pa Jose Nazario (jose@monkey.org) .It Pa Sam Norris <@ChangeIP.com> .It Pa Max Horn <@quendi.de> .It Pa John Morrissey .It Pa Florian Forster .It Pa Dave Plonka .It Pa http://dnstop.measurement-factory.com/ .El .Sh BUGS Does not support TCP at this time. dnstop/Makefile.in0000664000175100017510000000250614661103220012226 0ustar mhmhPROG=dnstop OPTFLAGS=@OPTFLAGS@ CC=@CC@ CFLAGS=@CFLAGS@ ${OPTFLAGS} LIBS=@LIBS@ LDFLAGS=@LDFLAGS@ prefix=@prefix@ exec_prefix=@exec_prefix@ bindir=@bindir@ datarootdir=@datarootdir@ datadir=@datadir@ mandir=@mandir@ SRCS= $(PROG).c \ hashtbl.c hashtbl.h \ inX_addr.c inX_addr.h \ known_tlds.h \ new_gtlds.h \ lookup3.c OBJS= $(PROG).o \ hashtbl.o \ inX_addr.o \ lookup3.o all: $(PROG) $(PROG): $(OBJS) $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) ${LIBS} clean: rm -f $(PROG) $(OBJS) $(PROG).core $(PROG).c~ distclean: clean rm -rf autom4te.cache rm -f config.h rm -f config.log rm -f config.status rm -f config.status.lineno rm -f Makefile tar: DATE=`date +%Y%m%d` && \ mkdir $(PROG)-$$DATE && \ cp -p LICENSE CHANGES $(SRCS) $(PROG).8 $(PROG)-$$DATE && \ cp -p configure Makefile.in config.h.in install-sh $(PROG)-$$DATE && \ cp -p configure.scan $(PROG)-$$DATE/configure.ac && \ perl -pi -e "s/\@VERSION\@/$$DATE/" $(PROG)-$$DATE/dnstop.c && \ tar czvf $(PROG)-$$DATE.tar.gz $(PROG)-$$DATE && \ chmod 444 $(PROG)-$$DATE.tar.gz && \ rm -rf $(PROG)-$$DATE && \ md5 *.gz > MD5s.txt install: $(PROG) install -m 755 $(PROG) ${DESTDIR}${bindir} mkdir -p ${DESTDIR}${mandir}/man8 install -m 644 $(PROG).8 ${DESTDIR}${mandir}/man8 uninstall: rm -f ${DESTDIR}${bindir}/$(PROG) rm -f ${DESTDIR}${mandir}/man8/$(PROG).8