diff --git a/2014/birken/Makefile b/2014/birken/Makefile index 238fbc9ef..f60d6ce41 100644 --- a/2014/birken/Makefile +++ b/2014/birken/Makefile @@ -1,125 +1,196 @@ #!/usr/bin/env make # -# 2014 makefile +# IOCCC 2014 winning entry - birken + +################################################################################ # -# This work by Landon Curt Noll, Simon Cooper, and Leonid A. Broukhis -# is licensed under: +# Regarding individual entries: +# +# IOCCC winning entry code may not work on your system. Even with standards, +# conditions and build environments change, especially when it comes to more +# extreme code such you might find in an IOCCC winner. Moreover, what was +# allowed and liked in one IOCCC contest may no longer be liked/allowed in +# later IOCCC years. +# +# Corrections on winning author and fixing typos in remarks are VERY WELCOME. +# +# GitHub pull requests are welcome: +# +# If you have a patch that might make running an entry work in modern Unix-like +# environments, please create a GitHub pull request for the IOCCC judges to +# consider. +# +# Suggestions and corrections regarding Makefiles, winning author information, +# fixing typos in remarks, and code patches are welcome via opening a GitHub +# issue or better yet, by creating a GitHub pull request for the IOCCC judges +# to consider. To form a GitHub issue or GitHub pull, please visit: +# +# https://github.com/ioccc-src/winner +# +################################################################################ + +# This work by Landon Curt Noll and Leonid A. Broukhis is licensed under: # # Creative Commons Attribution-ShareAlike 3.0 Unported License. # # See: http://creativecommons.org/licenses/by-sa/3.0/ -################ -# tool locations -################ +############################# +# shell used by this Makefile +############################# # SHELL= bash -CP= cp -CPP= cpp -GUNZIP= gunzip -LD= ld -MAKE= make -RM= rm -SED= sed -TAR= tar -TRUE= true + +####################### +# common tool locations +####################### +# +include ../../var.mk # Set X11_LIBDIR to the directory where the X11 library resides # -X11_LIBDIR= /usr/X11R6/lib +#X11_LIBDIR= /usr/X11R6/lib +#X11_LIBDIR= /usr/X11/lib +X11_LIBDIR= /opt/X11/lib # Set X11_INCLUDEDIR to the directory where the X11 include files reside # -X11_INCDIR= /usr/X11R6/include +#X11_INCDIR= /usr/X11R6/include +#X11_INCDIR= /usr/X11/include +X11_INCDIR= /opt/X11/include -# Compiler warnings +# Common C compiler warnings to silence # -#CWARN= -CWARN= -Wall -#CWARN= -Wall -pedantic +#CSILENCE= +CSILENCE= -Wno-comment -Wno-dangling-else -Wno-error \ + -Wno-implicit-function-declaration -Wno-incompatible-pointer-types \ + -Wno-parentheses -Wno-trigraphs -Wno-newline-eof -# compiler standard +# Common C compiler warning flags +# +#CWARN= ${CSILENCE} +#CWARN= -Wall ${CSILENCE} +#CWARN= -Wall -Wextra ${CSILENCE} +CWARN= -Wall -Wextra -pedantic ${CSILENCE} + +# Compiler standard # #CSTD= #CSTD= -ansi CSTD= -std=c99 -# compiler bit architecture +# Compiler bit architecture # # Some entries require 32-bitness: # ARCH= -m32 # -# Some entries require 64-bitess: +# Some entries require 64-bitness: # ARCH= -m64 # # By default we assume nothing: # ARCH= -# optimization +# Defines that are needed to compile +# +CDEFINE= +#CDEFINE= -DIOCCC + +# Include files that are needed to compile +# +CINCLUDE= +#CINCLUDE= -include stdlib.h +#CINCLUDE= -include stdio.h +#CINCLUDE= -include stdlib.h -include stdio.h +#CINCLUDE= -I ${X11_INCDIR} -I ${X11_INCDIR}/X11 +#CINCLUDE= `${SDL2_CONFIG} --cflags` + +# Optimization # # Most compiles will safely use -O2. Some can use only -O1 or -O. # A few compilers have broken optimizers or this entry make break # under those buggy optimizers and thus you may not want anything. +# Reasonable compilers will allow for -O3. # #OPT= #OPT= -O #OPT= -O1 -OPT= -O2 -#OPT= -O3 +#OPT= -O2 +OPT= -O3 + +# Default flags for ANSI C compilation +# +CFLAGS= ${CSTD} ${CWARN} ${ARCH} ${CDEFINE} ${CINCLUDE} ${OPT} # Libraries needed to build # LIBS= +#LIBS= -lm +#LIBS= -L ${X11_LIBDIR} -lX11 +#LIBS= `${SDL2_CONFIG} --libs` -# default flags for ANSI C compilation -# -CFLAGS= ${CWARN} ${CSTD} ${ARCH} ${OPT} \ - -Wno-comment -Wno-dangling-else -Wno-implicit-function-declaration \ - -Wno-incompatible-pointer-types -Wno-parentheses \ - -Wno-trigraphs --include string.h - - -# ANSI compiler -# -# Set CC to the name of your ANSI compiler. -# -# Some entries seem to need gcc. If you have gcc, set -# both CC and MAY_NEED_GCC to gcc. -# -# If you do not have gcc, set CC to the name of your ANSI compiler, and -# set MAY_NEED_GCC to either ${CC} (and hope for the best) or to just : -# to disable such programs. +# C compiler to use # CC= cc #CC=clang -MAY_NEED_GCC= gcc +#CC=gcc + +# Compiler add-ons or replacements for clang only +# +ifeq ($(CC),clang) +# +CSILENCE+= -Wno-comma -Wno-format-nonliteral -Wno-implicit-int-conversion \ + -Wno-missing-prototypes -Wno-missing-variable-declarations \ + -Wno-poison-system-directories -Wno-sign-conversion +# +CWARN+= -Weverything +# +endif + +# Specific add-ons or replacements for gcc only +# +ifeq ($(CC),gcc) +# +#CSILENCE+= +# +#CWARN+= +# +endif ############################## # Special flags for this entry ############################## # -ENTRY= prog +ENTRY= birken +PROG= prog +# +OBJ= ${PROG}.o DATA= +TARGET= ${PROG} +# ALT_OBJ= -ALT_ENTRY= +ALT_TARGET= ################# # build the entry ################# # -all: ${ENTRY} ${DATA} +all: data ${TARGET} @${TRUE} -${ENTRY}: ${ENTRY}.c +.PHONY: all alt data everything clean clobber install \ + love haste waste maker easter_egg sandwich \ + supernova deep_magic magic charon pluto + +${PROG}: ${PROG}.c ${CC} ${CFLAGS} $< -o $@ ${LIBS} # alternative executable # -alt: ${ALT_ENTRY} +alt: data ${ALT_TARGET} @${TRUE} # data files @@ -127,33 +198,51 @@ alt: ${ALT_ENTRY} data: ${DATA} @${TRUE} +# both all and alt +# +everything: all alt + ############### # utility rules ############### # -everything: all alt - clean: - ${RM} -f ${ENTRY}.o ${ALT_OBJ} + ${RM} -f ${OBJ} ${ALT_OBJ} + @-if [ -f indent.c ]; then \ + echo ${RM} -f indent.c; \ + ${RM} -f indent.c; \ + fi clobber: clean - ${RM} -f ${ENTRY} ${ALT_ENTRY} - -nuke: clobber - @${TRUE} - -dist_clean: nuke - @${TRUE} + ${RM} -f ${TARGET} ${ALT_TARGET} + @-if [ -e sandwich ]; then \ + ${RM} -f sandwich; \ + echo 'ate sandwich'; \ + fi install: - @echo "Surely we are joking Dr. Science!" + @echo "Dr. Spock says that is not logical!" @${TRUE} -# backwards compatibility +# you may be able to misunderstand the source by reading indent.c # -build: all - @${TRUE} +indent.c: ${PROG}.c + @if which "${GINDENT}" >/dev/null 2>&1; then \ + echo ${RM} -f $@; \ + ${RM} -f $@; \ + echo "${GINDENT} < $< > $@"; \ + ${GINDENT} < $< > $@; \ + elif which "${INDENT}" >/dev/null 2>&1; then \ + echo ${RM} -f $@; \ + ${RM} -f $@; \ + echo "${INDENT} < $< > $@"; \ + ${INDENT} < $< > $@; \ + else \ + echo "no intent tool found, ident $< yourself, sorry"; \ + echo "exit 1"; \ + exit 1; \ + fi ################## @@ -172,35 +261,69 @@ waste: @echo 'haste' @${TRUE} +maker: + @echo 'Participate in a maker faire' + @${TRUE} + easter_egg: - @echo you expected to sometimes mis-understand this $${RANDOM} magic - @echo chongo '' "/\\oo/\\" - @echo Readers shall not be disallowed from failong to be unable to not partly misunderstand this partocular final echo. + @echo "you expected to often misunderstand this $${RANDOM} magic" + @echo "chongo '' /\\oo/\\" + @echo "Eggy" + +sandwich: easter_egg + @if [ `id -u` -eq 0 ]; then \ + echo 'Okay.'; \ + echo "$${RANDOM}`date +%s`$${RANDOM}" > $@; \ + else \ + echo 'What? Make it yourself.'; \ + exit 1; \ + fi # Understand the history of the Homebrew Computer Club # as well as the West Coast Computer Faire and # you might be confused different. :-) # -supernova: nuke +supernova: sandwich @-if [ -r .code_anal ]; then \ - ${RM} -f .code_anal_v4; \ + ${RM} -f .code_anal_v6; \ else \ - echo "We are not expected to understand that"; \ + echo "planet deniers, like some members of the IAU, are so cute when they try to defend their logic"; \ fi + @echo "A $@ helps ${MAKE} the elements that help form planets" @${TRUE} -deep_magic: +deep_magic: supernova @-if [ -r .code_anal ]; then \ - ccode_analysis --deep_magic 2ed3582ec5c094a093fea2a6bcb9f19439892873c9cc45ed1ceaafe08b7d52e1b2c7cd524be3b0b2 --FNV1a_hash 512-bit "${ENTRY}"; \ + ccode_analysis --deep_magic 7889066cdbdf09b0408021754586e895be641cc9be29e7eafd3ca65359541f17 \ + --FNV1a_hash_512_bit -v2 "${PROG}" "${PROG}.c"; \ else \ - echo "You are holding it wrong!"; \ + echo "Wrong! Do it again!"; \ + sleep 2; \ + echo "Wrong! Do it again!"; \ + sleep 2; \ + echo "Wrong! Do it again!"; \ fi @${TRUE} magic: deep_magic @-if [ -r .code_anal ]; then \ - ccode_analysis --mode 391581 --level 216193 --FNV1a_hash 512-bit "${ENTRY}"; \ + ccode_analysis --level 20003 --mode 5717175 --FNV1a_hash_512_bit -v2 "${PROG}" "${PROG}.c"; \ else \ - echo "These aren't the primes you're looking for Pauline!"; \ + echo "If you don't eat yer meat, you can't have any pudding!"; \ + echo "How can you have any pudding if you don't eat yer meat?!"; \ fi @${TRUE} + +# The IOCCC resident astronomer states +# +charon: magic + @echo "$@ is a dwarf planet" + @echo "dwarf is a type of planet" + @echo "therefore IAU, $@ is a planet" + +pluto: charon + ${MAKE} charon + @echo "$@ is a dwarf planet" + @echo "dwarf is a type of planet" + @echo "therefore, $@ is a planet" + @echo "having lots of planets is good feature because supernovae can help ${MAKE} a lot of them" diff --git a/2014/birken/README.md b/2014/birken/README.md index dd5a5b7e2..8512a284c 100644 --- a/2014/birken/README.md +++ b/2014/birken/README.md @@ -1,31 +1,34 @@ # Best use of port 1701 -Michael Birken - - + Michael Birken + + -Alexander Prishchepov - + Alexander Prishchepov + +# To build: -## Judges' comments: -### To build: - - make +```sh +make +``` ### To run: - ./prog < some_secret_or_something +```sh +./prog < some_secret_or_something - ./prog http://host[:port] +./prog http://host[:port] +``` ### Try: - ./prog.c +```sh +./prog - ./prog http://127.0.0.1:1701 +./prog http://127.0.0.1:1701 -### Selected Judges Remarks: +## Judges' comments: Port 1701? Well this is not the l2f registered TCP/1701 protocol. Sniff the traffic to/from that port. You will see HTTP client @@ -39,25 +42,34 @@ So how does this program do it? A trek though the cloak of obfuscation awaits the reader of the source! ## Author's comments: + ### Abstract When launched in web server mode, this application appears to deliver nothing more than a static HTML page. But, in actuality, it provides covert file transfer over the Internet. This is demonstrated by starting the application as a client-side downloader. The hidden transmitted data cannot be reconstructed or even detected from the binary content of the traffic between the client and the server. ### To run web server - ./prog < secret_file_to_be_downloaded +```sh +./prog < secret_file_to_be_downloaded +``` Try using the program's source code as the secret file: - ./prog < prog.c +```sh +./prog < prog.c +``` ### To run client-side downloader - ./prog http://host[:port] +```sh +./prog http://host[:port] +``` The optional port defaults to 1701. If the web server instance is started on the same box, try: - ./prog http://127.0.0.1:1701 +```sh +./prog http://127.0.0.1:1701 +``` It will incrementally display the contents of the hidden file at a rate of approximately 1 baud. @@ -110,23 +122,24 @@ The NCC constant is the web server port number. For space considerations, the following include statements were dropped resulting in compiler warnings: - #include - #include - #include - #include - #include - #include - #include - #include - #include +```c +#include +#include +#include +#include +#include +#include +#include +#include +#include +``` It may be necessary to restore some of these under certain environments. --------------------------------------------------------------------------------- -