From d21bc8259441eb2b1340d89b6ab2225b820f4c8d Mon Sep 17 00:00:00 2001 From: Bandie Date: Tue, 27 Mar 2018 03:32:29 +0200 Subject: [PATCH] Initial commit --- LICENSE | 674 +++++++++++++++++++++++++++++++++++++ Makefile | 29 ++ README.md | 63 ++++ man/de/man8/pam_panic.8.gz | Bin 0 -> 2011 bytes man/man8/pam_panic.8.gz | Bin 0 -> 1763 bytes src/pam_panic.c | 220 ++++++++++++ 6 files changed, 986 insertions(+) create mode 100644 LICENSE create mode 100644 Makefile create mode 100644 README.md create mode 100644 man/de/man8/pam_panic.8.gz create mode 100644 man/man8/pam_panic.8.gz create mode 100644 src/pam_panic.c diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..c664d96 --- /dev/null +++ b/Makefile @@ -0,0 +1,29 @@ +POSSIBLE_PAMDIRS = /lib/x86_64-linux-gnu/security /lib/security +PAMDIR = $(shell make detect_pamdir) + +all: + @which reboot >/dev/null + @which poweroff >/dev/null + @which cryptsetup >/dev/null + mkdir -p build obj + gcc -fPIC -DPOWEROFF=\"`which poweroff`\" -DREBOOT=\"`which reboot`\" -DCRYPTSETUP=\"`which cryptsetup`\" -c src/pam_panic.c -o obj/pam_panic.o + ld -x --shared -o build/pam_panic.so obj/pam_panic.o + @printf "Done!\n" +clean: + rm build/pam_panic.so + rm obj/pam_panic.o + rmdir build obj + @printf "Done!\n" + +detect_pamdir: + @for d in $(POSSIBLE_PAMDIRS); do if [ ! -d $${d} ]; then continue; else printf "$${d}\n"; fi; done + +uninstall: + PAMDIR=$(PAMDIR); rm $${PAMDIR}/pam_panic.so + rm /usr/share/man/*/pam_panic.8.gz + @printf "Done!\n" + +install: + PAMDIR=$(PAMDIR); if [ -z $${PAMDIR} ]; then printf "Error: PAM's shared object directory was not detected. If you know where it is, please add to POSSIBLE_PAMDIRS and make a pull request.\n"&& exit 1; else cp build/pam_panic.so $${PAMDIR}/pam_panic.so; fi + if [ ! -d /usr/share/man ]; then printf "Error: Where is the manpage directory?\n" && exit 1; else cp -r man/* /usr/share/man/.; fi + @printf "Done!\n" diff --git a/README.md b/README.md new file mode 100644 index 0000000..9cc401f --- /dev/null +++ b/README.md @@ -0,0 +1,63 @@ +# pam\_panic + + +## Purpose +The pam\_panic PAM module shall protect people who have value data on their computer. It provides a panic function. + + +## Installation +You need gcc or something similar. +To compile and install it you may want to do the following within this project directory: + +``` +make +sudo make install +``` + +### Compiling notes +The Makefile passes the pathes of `reboot`, `poweroff` and `cryptsetup` using macros to be sure that it will run on different machines. +You need libpam's development package. Some call them like `libpam0g-dev`. + + +## Preparation +You need two GPT formatted removable devices. There must be at least one partition on it. Here is an example with `fdisk`: + +``` +$ sudo fdisk /dev/sdc + +Welcome to fdisk (util-linux 2.31.1). +Changes will remain in memory only, until you decide to write them. +Be careful before using the write command. + + +Command (m for help): g +Created a new GPT disklabel (GUID: AAAAAAAA-AAAA-AAAA-AAAA-AAAAAAAAAAAA). + +Command (m for help): n +Partition number (1-128, default 1): +First sector (2048-15661022, default 2048): +Last sector, +sectors or +size{K,M,G,T,P} (2048-15661022, default 15661022): + +Created a new partition 1 of type 'Linux filesystem' and of size 7.5 GiB. +Command (m for help): w +``` + +You'll find the UUID of your partition in `/dev/disk/by-partuuid/`. You can find out which device is which through a `ls -l /dev/disk/by-partuuid/`. + + +## Integration +To let it integrate with your system, add the following at the top of of your pam.d config(s): + + +``` +auth requisite pam_panic.so auth= reject= reboot serious= +account requisite pam_panic.so +``` + +See `man 8 pam_panic` for more. + + +## TODO +Asking for man page translations. + + diff --git a/man/de/man8/pam_panic.8.gz b/man/de/man8/pam_panic.8.gz new file mode 100644 index 0000000000000000000000000000000000000000..9412424c962fd8e28b1cc8a87e17491dad8fb9ee GIT binary patch literal 2011 zcmV<12PF6(iwFpbi@90?18`w&UvOb=X=5%p0PR>^Z`;Naeb=uT=%JAVOG?s@>l$rw zWt*{t#-epx^LHj6p>uc&YU@OW;UHK;)jfPX2Onc+$g!<7qqSr69O`|gb zNrt_vsM*+&oaSv39;}PF1Pl+Q4SZ)KXgp}PrAa9UD>J&`W#%}K!Eod4ymbl^T0?8? z1B+Je_oZ0{aO(o*$0cF@c6MQ?${Pd@<|HU>Y{Yp)v|Ew<5@I0?~kLw z*=%?TA4j9cg>rihIK<|zv@wTpV_s8V8_zc7SeX?Y0wi~Ox#HX((}=Ar3|G+LZsv80 zE0G2Rgvl*4KvVh$HXTGtk)wrXk1}9wcn@aK7A&aT()Vz%@EXFUuR7S7#i8;eH)gpBpPZSE0D)w!9R!`bu@w-c*UYpf_P}`SrGe%xcJpDf}IqSf@3V5;VMM zS84|{p51Q4z?!uNq7Gn(#YodgS+D;RyzD8&2rkM(_tdW02ja+S&O8igx6z!tJN#gB zg>d7Pns48I``!0H{O6?oWAE&|eG$EX)0SIpxhJ>ePBSD^0=!`j{xc0sy<1?sUQ=%Y zejDvQ0rQ(dL@2T8;OZ(O=m1?sgJBf>ok$J@vvCv*O1gGc{WAFq7DW#5?y+2LH9>5Z zChite0r6ie3rlOw2yeO~5v5Z(x}QzUHS$mB!kjXaaSZqpTPAG&&w!U;K%Fn-dc8@C zEN8P#^bH$RNx^e@2yh%%i3i3sxd(b{GF(y$Ab}oxN##Q2)q+QG3lRc_@quwidrlrw zQGiZ4=hRnCp-uvzyxxQi1t)g?ZzVkV|Ad9&c>4;`u2*7L)H7Rj9Pd)GU517doVqP)@9h>{wZPyZo#;vE`!;_dAC+?K zrQ(TD97{2ThAwgJJCQqRjJ|GUbQd~a%>N=7yIKhSOp50w8eUYD6HTaBx3<|j?0qGZ z33B;Rin>Ua*5aabGLcBb4FV^9SqfFUx0VtW77n`Xmt71xowyt7kZ!9$U}qO`H46v= z4ss+bP}w?c#nb|t#`*Tq$QG$p>otp}QZT^uYheivo^b)g+ZNPCt1nLGA=PQwhTR9rj>NL0O>{@UUtK&v-|fhF7QCE)+N~IMl~C z%U??EpxSb=n{hiq|9$rJPeRULsAlT!N)(5-wN>2>o~z}uKyLolaLs4wga?%VT0dy+ zCSAF7+YBT2phbbTG2eD^Xj^p`_w5Zty)1PswFIH6MPtugREbQgw?&>~Sj(#EduJ4) z$2nx@poF(Kv`oEqo`J6e^fF_Ej_sVDb)j2REl}Wt=0%R$b}r*Qm*)CV*28+0_!^6` zoRH3cz3iPuH_><+Rq@L)elj~hk0z5kg};}n)k#vHKvEVRf-3vYp<>8ugUjKyT!yzW zanpN71F|6$OeraQ%av}@Mb!{01qnj?Y)28RSH0h+<3Y6b=HgKFDwm8DHHv$sP>mVu%|6*NK@f&L-Fp-zSeYJHaP?IA{x~!wn9!?uqwjv&)*66_g9q0b+&viP9FS zC|LzAMFv;U$D<&F=aAl8Sr0LmV*<#xr!zFvR_bp#Kv$9Wlrrx(?zG!Ywa>~$2U6BO zlL&e5{MNI{AnHfdo1OP}r=9&75NvFn939t(>W)-M>-*hx_4I&dQ*P0-Y tkHR%wLei`M6{y^!pBCZY|1L9CxJ}_D9WnoMa4weZ{s+$T9XxRp000eT| literal 0 HcmV?d00001 diff --git a/man/man8/pam_panic.8.gz b/man/man8/pam_panic.8.gz new file mode 100644 index 0000000000000000000000000000000000000000..f469c3cef8814375b9a39078d3c25d24631fa016 GIT binary patch literal 1763 zcmV<91|0bxiwFq%p1E2A18`w&UvOb=X=5%p0PR>?bJ|7}e&<)5;i1NvfShYxPm(FN zl~^-2FbLXaLMF4I71~;8746Cn{q_CMN&?w&Go2=nWo(T0axUNb&IKPVx@0>8yz^_O zY${JE7n@JH$keLY7?w8C#R+{dQj$$1b%*oW#dsQa$;g#eI{UbjLFd9k#?zxG$Ni&c z{iiRRohy-*B0Zr?m6c!mli?LjSVz6yoC(VP~2Vj^sGR00PCfW&GgjiHs!Y@t&s4Z=ZjDojFAp>Cw1TV)ffuE%BOlAsYE zz8{SzVGx2$7ZY0C9xUS1owCJG1EUx5bU_DY=b;VyAktLdzFx$^d>)+l-c4qQSpG;K z3i&6p?ZJ(u))pUfeJcwc#~(RW3#CiboaTd#edm67HVr1TU_63}lSyZWl-{G!g2E)Q zh4MmMD5hNM9E-P!rbOIGx)Et9DH2wI5nLBk0mL?WX=MR#D6o9>Mn!;2+`|g{E!FKE zl3(NsA`Eo_&#Ktw7U@yul$O`VFNBfwfj#;Nm%1=Utr7$SWA>dhc}!P;{9_$c1a{ zwKXlp>Kb+~B^V@Y&e%kmw$q1A5XKJwunGViZGt|<=X()mQuGS>xm1OWkayFNo&z`t zj^vG6N#etV$I{5CqAv=z%xs;@71rl;17g9mcS(hLz*YX|L0a+>q zDgtAYi^3`wE&M3U8aR^95FP)6m{jX)L#YC8-6v0S4FWz5f%^{7kX0}*21Ud&AvailCjFeUGm90xd)O~)&6dQ zH#^)UH;0IG>AT(BSy~lqX6*Tx0-A?D1+%(qqC{|6q2~@FuVy{mE!^z`c*BEsq~aJ$h$!r0U(93fr|Uv&3>OyC(8?V* zi`CkRH#I;UdbVia$qj1=b1ANwFSrxLLY?*b zlIy@#IxuZBFbqA|jY^;i?lz36EXAN{3$-j+OGTP?Drr}2ScMXqChJ2bhW9*$=)7^S1|i)zm0N5Ub#`HD)WGSRf@^AVL2r@k!E#v9j7yGVc&rd}H?{DtX@~@#d%)`2TW$)KBTb`<{y|6gYLUxY3;OJP%430y)kWjWAS%YX*?&smeSyp!RU; z&*sw+{WiRu`?Xj6MJ=44o%vx{M`c)z+_y+aP&~VrhVzj}p= zx(`g@JRsDyf6}BCm#j%%*`Kwn|QG%6GD>!4NVc$y4y&tlGJ^!DZu=m#U@r z$ZP7OcXzgLigqHned{H2%CWP7P4k@0_`-@?U0k<~^-5EChOc@XkwFRGkMAfr#_#&C zmLoU;=B=yTZy9_#f7b+orvsjOb6vp6at$PrrW#{%v6ha*$Y;ZIL}G1jPCRdoxuRSS zPz1bF)F37IHqh?-kMGm)G92$_+x-v^UiFR-AJ<=e229l6i`{dz+agZ$Z-&+^ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef REBOOT +#ifdef POWEROFF +#ifdef CRYPTSETUP + +#define ASK "Please enter your extremely secret flash drive to decrypt the firewall and access the mainframe. " + + +PAM_EXTERN int pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc, const char *argv[]) +{ + + char *allowed_arg = malloc(128 * sizeof(char)); + char *rejected_arg = malloc(128 * sizeof(char)); + char *serious_arg = malloc(128 * sizeof(char)); + char *allowed_temp = NULL; + char *rejected_temp = NULL; + char *serious_temp = NULL; + char *allowed = malloc(60 * sizeof(char)); + char *rejected = malloc(60 * sizeof(char)); + char *serious_dev = malloc(60 * sizeof(char)); + int8_t serious = 0; + int8_t reboot = 0; + int8_t poweroff = 0; + + + // Regex for checking arguments + char *resp; + char *pattern = "^[A-Fa-f0-9]\\{8\\}\\-[A-Fa-f0-9]\\{4\\}\\-[A-Fa-f0-9]\\{4\\}\\-[A-Fa-f0-9]\\{4\\}\\-[A-Fa-f0-9]\\{12\\}$"; + regex_t regex; + + if(regcomp(®ex, pattern, 0)){ + pam_syslog(pamh, LOG_CRIT, "ERROR: Problem with regcomp."); + return (PAM_IGNORE); + } + + + + // Check number of arguments + if(argc<2){ + pam_syslog(pamh, LOG_ERR, "Missing arguments."); + return (PAM_IGNORE); + } + + + + // Argument handling + for(int i=0; i= 3){ + pam_syslog(pamh, LOG_NOTICE, "Couldn't identify flash drive. 3 tries."); + return (PAM_MAXTRIES); + } + } + + // Allowed drive? OK! + if(access(allowed, F_OK) != -1) + return (PAM_SUCCESS); + + // Rejected drive? PANIC!!1 + if(access(rejected, F_OK) != -1){ + + if(serious){ + int ser_stat; + int yes[2]; + pipe(yes); + if(fork() == 0){ + close(yes[1]); + dup2(yes[0], 0); + + execlp(CRYPTSETUP, CRYPTSETUP, "luksErase", serious_dev, NULL); + }else { + close(yes[0]); + write(yes[1], "YES\n", 4); + close(yes[1]); + + wait(&ser_stat); + } + } + + if(reboot) + execlp(REBOOT, REBOOT, NULL); + if(poweroff) + execlp(POWEROFF, POWEROFF, NULL); + + return (PAM_MAXTRIES); + } + + return (PAM_MAXTRIES); +} + + + + +// Fuck all of this below. + +PAM_EXTERN int pam_sm_setcred(pam_handle_t *pamh, int flags, int argc, const char *argv[]) +{ + + return (PAM_SUCCESS); +} + +PAM_EXTERN int pam_sm_acct_mgmt(pam_handle_t *pamh, int flags, int argc, const char *argv[]) +{ + + return (PAM_SUCCESS); +} + +PAM_EXTERN int pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, const char *argv[]) +{ + + return (PAM_SUCCESS); +} + +PAM_EXTERN int pam_sm_close_session(pam_handle_t *pamh, int flags, int argc, const char *argv[]) +{ + + return (PAM_SUCCESS); +} + +PAM_EXTERN int pam_sm_chauthtok(pam_handle_t *pamh, int flags, int argc, const char *argv[]) +{ + + return (PAM_SERVICE_ERR); +} + +#endif +#endif +#endif