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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 14:11:00 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 14:11:00 +0000 |
commit | af754e596a8dbb05ed8580c342e7fe02e08b28e0 (patch) | |
tree | b2f334c2b55ede42081aa6710a72da784547d8ea /src/modules/rlm_eap/types/rlm_eap_pwd | |
parent | Initial commit. (diff) | |
download | freeradius-upstream.tar.xz freeradius-upstream.zip |
Adding upstream version 3.2.3+dfsg.upstream/3.2.3+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/modules/rlm_eap/types/rlm_eap_pwd')
-rw-r--r-- | src/modules/rlm_eap/types/rlm_eap_pwd/.gitignore | 1 | ||||
-rw-r--r-- | src/modules/rlm_eap/types/rlm_eap_pwd/README.md | 11 | ||||
-rw-r--r-- | src/modules/rlm_eap/types/rlm_eap_pwd/all.mk.in | 16 | ||||
-rwxr-xr-x | src/modules/rlm_eap/types/rlm_eap_pwd/configure | 4271 | ||||
-rw-r--r-- | src/modules/rlm_eap/types/rlm_eap_pwd/configure.ac | 80 | ||||
-rw-r--r-- | src/modules/rlm_eap/types/rlm_eap_pwd/const_time.h | 190 | ||||
-rw-r--r-- | src/modules/rlm_eap/types/rlm_eap_pwd/eap_pwd.c | 933 | ||||
-rw-r--r-- | src/modules/rlm_eap/types/rlm_eap_pwd/eap_pwd.h | 126 | ||||
-rw-r--r-- | src/modules/rlm_eap/types/rlm_eap_pwd/rlm_eap_pwd.c | 972 | ||||
-rw-r--r-- | src/modules/rlm_eap/types/rlm_eap_pwd/rlm_eap_pwd.h | 51 |
10 files changed, 6651 insertions, 0 deletions
diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/.gitignore b/src/modules/rlm_eap/types/rlm_eap_pwd/.gitignore new file mode 100644 index 0000000..01a5daa --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/.gitignore @@ -0,0 +1 @@ +all.mk diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/README.md b/src/modules/rlm_eap/types/rlm_eap_pwd/README.md new file mode 100644 index 0000000..e7ea14b --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/README.md @@ -0,0 +1,11 @@ +# rlm_eap_pwd +## Metadata +<dl> + <dt>category</dt><dd>authentication</dd> +</dl> + +## Summary +Implements EAP-PWD as described by [RFC 5931](https://tools.ietf.org/html/rfc5931). + +EAP-PWD allows authentication using a PSK (the user's password). The PSK is not sent in the clear, instead each side +proves knowledge of the password using Elliptic Curve cryptography. diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/all.mk.in b/src/modules/rlm_eap/types/rlm_eap_pwd/all.mk.in new file mode 100644 index 0000000..e04ec27 --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/all.mk.in @@ -0,0 +1,16 @@ +TARGETNAME := @targetname@ + +ifneq "$(OPENSSL_LIBS)" "" +ifneq "$(TARGETNAME)" "" +TARGET := $(TARGETNAME).a +endif +endif + +SOURCES := $(TARGETNAME).c eap_pwd.c + +SRC_CFLAGS := @mod_cflags@ +TGT_LDLIBS := @mod_ldflags@ + +SRC_INCDIRS := ../../ ../../libeap/ +TGT_PREREQS := libfreeradius-eap.a + diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/configure b/src/modules/rlm_eap/types/rlm_eap_pwd/configure new file mode 100755 index 0000000..d108e97 --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/configure @@ -0,0 +1,4271 @@ +#! /bin/sh +# From configure.ac Revision. +# Guess values for system-dependent variables and create Makefiles. +# Generated by GNU Autoconf 2.69. +# +# +# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. +# +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +as_myself= +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +# Use a proper internal environment variable to ensure we don't fall + # into an infinite loop, continuously re-executing ourselves. + if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then + _as_can_reexec=no; export _as_can_reexec; + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +as_fn_exit 255 + fi + # We don't want this to propagate to other subprocesses. + { _as_can_reexec=; unset _as_can_reexec;} +if test "x$CONFIG_SHELL" = x; then + as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which + # is contrary to our usage. Disable this feature. + alias -g '\${1+\"\$@\"}'='\"\$@\"' + setopt NO_GLOB_SUBST +else + case \`(set -o) 2>/dev/null\` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi +" + as_required="as_fn_return () { (exit \$1); } +as_fn_success () { as_fn_return 0; } +as_fn_failure () { as_fn_return 1; } +as_fn_ret_success () { return 0; } +as_fn_ret_failure () { return 1; } + +exitcode=0 +as_fn_success || { exitcode=1; echo as_fn_success failed.; } +as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; } +as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; } +as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; } +if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then : + +else + exitcode=1; echo positional parameters were not saved. +fi +test x\$exitcode = x0 || exit 1 +test -x / || exit 1" + as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO + as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO + eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" && + test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1" + if (eval "$as_required") 2>/dev/null; then : + as_have_required=yes +else + as_have_required=no +fi + if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then : + +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +as_found=false +for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + as_found=: + case $as_dir in #( + /*) + for as_base in sh bash ksh sh5; do + # Try only shells that exist, to save several forks. + as_shell=$as_dir/$as_base + if { test -f "$as_shell" || test -f "$as_shell.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then : + CONFIG_SHELL=$as_shell as_have_required=yes + if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then : + break 2 +fi +fi + done;; + esac + as_found=false +done +$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then : + CONFIG_SHELL=$SHELL as_have_required=yes +fi; } +IFS=$as_save_IFS + + + if test "x$CONFIG_SHELL" != x; then : + export CONFIG_SHELL + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +exit 255 +fi + + if test x$as_have_required = xno; then : + $as_echo "$0: This script requires a shell more modern than all" + $as_echo "$0: the shells that I found on your system." + if test x${ZSH_VERSION+set} = xset ; then + $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should" + $as_echo "$0: be upgraded to zsh 4.3.4 or later." + else + $as_echo "$0: Please tell bug-autoconf@gnu.org about your system, +$0: including any error possibly output before this +$0: message. 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"./$cache_file";; + esac + fi +else + { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5 +$as_echo "$as_me: creating cache $cache_file" >&6;} + >$cache_file +fi + +# Check that the precious variables saved in the cache have kept the same +# value. +ac_cache_corrupted=false +for ac_var in $ac_precious_vars; do + eval ac_old_set=\$ac_cv_env_${ac_var}_set + eval ac_new_set=\$ac_env_${ac_var}_set + eval ac_old_val=\$ac_cv_env_${ac_var}_value + eval ac_new_val=\$ac_env_${ac_var}_value + case $ac_old_set,$ac_new_set in + set,) + { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5 +$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;} + ac_cache_corrupted=: ;; + ,set) + { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5 +$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;} + ac_cache_corrupted=: ;; + ,);; + *) + if test "x$ac_old_val" != "x$ac_new_val"; then + # differences in whitespace do not lead to failure. + ac_old_val_w=`echo x $ac_old_val` + ac_new_val_w=`echo x $ac_new_val` + if test "$ac_old_val_w" != "$ac_new_val_w"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5 +$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;} + ac_cache_corrupted=: + else + { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5 +$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;} + eval $ac_var=\$ac_old_val + fi + { $as_echo "$as_me:${as_lineno-$LINENO}: former value: \`$ac_old_val'" >&5 +$as_echo "$as_me: former value: \`$ac_old_val'" >&2;} + { $as_echo "$as_me:${as_lineno-$LINENO}: current value: \`$ac_new_val'" >&5 +$as_echo "$as_me: current value: \`$ac_new_val'" >&2;} + fi;; + esac + # Pass precious variables to config.status. + if test "$ac_new_set" = set; then + case $ac_new_val in + *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;; + *) ac_arg=$ac_var=$ac_new_val ;; + esac + case " $ac_configure_args " in + *" '$ac_arg' "*) ;; # Avoid dups. Use of quotes ensures accuracy. + *) as_fn_append ac_configure_args " '$ac_arg'" ;; + esac + fi +done +if $ac_cache_corrupted; then + { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} + { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5 +$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;} + as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5 +fi +## -------------------- ## +## Main body of script. ## +## -------------------- ## + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + + + + + + + + +# Check whether --with-rlm_eap_pwd was given. +if test "${with_rlm_eap_pwd+set}" = set; then : + withval=$with_rlm_eap_pwd; +fi + + + +mod_ldflags= +mod_cflags= + + +fail= +fr_status= +fr_features= +: > "config.report" +: > "config.report.tmp" + + + +if test x"$with_rlm_eap_pwd" != xno; then + + + +openssl_lib_dir= + +# Check whether --with-openssl-lib-dir was given. +if test "${with_openssl_lib_dir+set}" = set; then : + withval=$with_openssl_lib_dir; case "$withval" in + no) + as_fn_error $? "Need openssl-lib-dir" "$LINENO" 5 + ;; + yes) + ;; + *) + openssl_lib_dir="$withval" + ;; + esac +fi + + +openssl_include_dir= + +# Check whether --with-openssl-include-dir was given. +if test "${with_openssl_include_dir+set}" = set; then : + withval=$with_openssl_include_dir; case "$withval" in + no) + as_fn_error $? "Need openssl-include-dir" "$LINENO" 5 + ;; + yes) + ;; + *) + openssl_include_dir="$withval" + ;; + esac +fi + + + +smart_try_dir=$openssl_include_dir +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args. +set dummy ${ac_tool_prefix}gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_CC"; then + ac_ct_CC=$CC + # Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +else + CC="$ac_cv_prog_CC" +fi + +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args. +set dummy ${ac_tool_prefix}cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + fi +fi +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + ac_prog_rejected=no +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# != 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@" + fi +fi +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + for ac_prog in cl.exe + do + # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. +set dummy $ac_tool_prefix$ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="$ac_tool_prefix$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$CC" && break + done +fi +if test -z "$CC"; then + ac_ct_CC=$CC + for ac_prog in cl.exe +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$ac_ct_CC" && break +done + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +fi + +fi + + +test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? 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" >&6; } +ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'` + +# The possible output files: +ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*" + +ac_rmfiles= +for ac_file in $ac_files +do + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;; + * ) ac_rmfiles="$ac_rmfiles $ac_file";; + esac +done +rm -f $ac_rmfiles + +if { { ac_try="$ac_link_default" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_link_default") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then : + # Autoconf-2.13 could set the ac_cv_exeext variable to `no'. +# So ignore a value of `no', otherwise this would lead to `EXEEXT = no' +# in a Makefile. 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For instance with Cygwin, `ls conftest' will +# work properly (i.e., refer to `conftest.exe'), while it won't with +# `rm'. +for ac_file in conftest.exe conftest conftest.*; do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;; + *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + break;; + * ) break;; + esac +done +else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? 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Curiously '\x00'!='x' always comes out true, for an + array size at least. It's necessary to write '\x00'==0 to get something + that's true only with -std. */ +int osf4_cc_array ['\x00' == 0 ? 1 : -1]; + +/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters + inside strings and character constants. */ +#define FOO(x) 'x' +int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1]; + +int test (int i, double x); +struct s1 {int (*f) (int a);}; +struct s2 {int (*f) (double a);}; +int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int); +int argc; +char **argv; +int +main () +{ +return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]; + ; + return 0; +} +_ACEOF +for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \ + -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__" +do + CC="$ac_save_CC $ac_arg" + if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_c89=$ac_arg +fi +rm -f core conftest.err conftest.$ac_objext + test "x$ac_cv_prog_cc_c89" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC + +fi +# AC_CACHE_VAL +case "x$ac_cv_prog_cc_c89" in + x) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 +$as_echo "none needed" >&6; } ;; + xno) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 +$as_echo "unsupported" >&6; } ;; + *) + CC="$CC $ac_cv_prog_cc_c89" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5 +$as_echo "$ac_cv_prog_cc_c89" >&6; } ;; +esac +if test "x$ac_cv_prog_cc_c89" != xno; then : + +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + + + +ac_safe=`echo "openssl/ec.h" | sed 'y%./+-%__pm%'` +old_CPPFLAGS="$CPPFLAGS" +smart_include= +smart_include_dir="/usr/local/include /opt/include" + +_smart_try_dir= +_smart_include_dir= + +for _prefix in $smart_prefix ""; do + for _dir in $smart_try_dir; do + _smart_try_dir="${_smart_try_dir} ${_dir}/${_prefix}" + done + + for _dir in $smart_include_dir; do + _smart_include_dir="${_smart_include_dir} ${_dir}/${_prefix}" + done +done + +if test "x$_smart_try_dir" != "x"; then + for try in $_smart_try_dir; do + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for openssl/ec.h in $try" >&5 +$as_echo_n "checking for openssl/ec.h in $try... " >&6; } + CPPFLAGS="-isystem $try $old_CPPFLAGS" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + #include <openssl/ec.h> +int +main () +{ +int a = 1; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + + smart_include="-isystem $try" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + break + +else + + smart_include= + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + done + CPPFLAGS="$old_CPPFLAGS" +fi + +if test "x$smart_include" = "x"; then + for _prefix in $smart_prefix; do + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${_prefix}/openssl/ec.h" >&5 +$as_echo_n "checking for ${_prefix}/openssl/ec.h... " >&6; } + + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + #include <openssl/ec.h> +int +main () +{ +int a = 1; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + + smart_include="-isystem ${_prefix}/" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + break + +else + + smart_include= + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + done +fi + +if test "x$smart_include" = "x"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for openssl/ec.h" >&5 +$as_echo_n "checking for openssl/ec.h... " >&6; } + + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + #include <openssl/ec.h> +int +main () +{ +int a = 1; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + + smart_include=" " + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + break + +else + + smart_include= + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + +if test "x$smart_include" = "x"; then + + for try in $_smart_include_dir; do + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for openssl/ec.h in $try" >&5 +$as_echo_n "checking for openssl/ec.h in $try... " >&6; } + CPPFLAGS="-isystem $try $old_CPPFLAGS" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + #include <openssl/ec.h> +int +main () +{ +int a = 1; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + + smart_include="-isystem $try" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + break + +else + + smart_include= + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + done + CPPFLAGS="$old_CPPFLAGS" +fi + +if test "x$smart_include" != "x"; then + eval "ac_cv_header_$ac_safe=yes" + CPPFLAGS="$smart_include $old_CPPFLAGS" + SMART_CPPFLAGS="$smart_include $SMART_CPPFLAGS" +fi + +smart_prefix= + +if test "$ac_cv_header_openssl_ec_h" != "yes"; then + +fail="$fail openssl/ec.h" + +fi + +smart_try_dir=$openssl_lib_dir + + +sm_lib_safe=`echo "crypto" | sed 'y%./+-%__p_%'` +sm_func_safe=`echo "EVP_CIPHER_CTX_new" | sed 'y%./+-%__p_%'` + +old_LIBS="$LIBS" +old_CPPFLAGS="$CPPFLAGS" +smart_lib= +smart_ldflags= +smart_lib_dir= + +if test "x$smart_try_dir" != "x"; then + for try in $smart_try_dir; do + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for EVP_CIPHER_CTX_new in -lcrypto in $try" >&5 +$as_echo_n "checking for EVP_CIPHER_CTX_new in -lcrypto in $try... " >&6; } + LIBS="-lcrypto $old_LIBS" + CPPFLAGS="-L$try -Wl,-rpath,$try $old_CPPFLAGS" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +extern char EVP_CIPHER_CTX_new(); +int +main () +{ +EVP_CIPHER_CTX_new() + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + + smart_lib="-lcrypto" + smart_ldflags="-L$try -Wl,-rpath,$try" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + break + +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + done + LIBS="$old_LIBS" + CPPFLAGS="$old_CPPFLAGS" +fi + +if test "x$smart_lib" = "x"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for EVP_CIPHER_CTX_new in -lcrypto" >&5 +$as_echo_n "checking for EVP_CIPHER_CTX_new in -lcrypto... " >&6; } + LIBS="-lcrypto $old_LIBS" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +extern char EVP_CIPHER_CTX_new(); +int +main () +{ +EVP_CIPHER_CTX_new() + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + + smart_lib="-lcrypto" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + LIBS="$old_LIBS" +fi + +if test "x$smart_lib" = "x"; then + for try in /usr/local/lib /opt/lib; do + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for EVP_CIPHER_CTX_new in -lcrypto in $try" >&5 +$as_echo_n "checking for EVP_CIPHER_CTX_new in -lcrypto in $try... " >&6; } + LIBS="-lcrypto $old_LIBS" + CPPFLAGS="-L$try -Wl,-rpath,$try $old_CPPFLAGS" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +extern char EVP_CIPHER_CTX_new(); +int +main () +{ +EVP_CIPHER_CTX_new() + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + + smart_lib="-lcrypto" + smart_ldflags="-L$try -Wl,-rpath,$try" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + break + +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + done + LIBS="$old_LIBS" + CPPFLAGS="$old_CPPFLAGS" +fi + +if test "x$smart_lib" != "x"; then + eval "ac_cv_lib_${sm_lib_safe}_${sm_func_safe}=yes" + LIBS="$smart_ldflags $smart_lib $old_LIBS" + SMART_LIBS="$smart_ldflags $smart_lib $SMART_LIBS" +fi + +if test "x$ac_cv_lib_crypto_EVP_CIPHER_CTX_new" != "xyes"; then + +fail="$fail libssl" + +else + for ac_func in EVP_sha256 +do : + ac_fn_c_check_func "$LINENO" "EVP_sha256" "ac_cv_func_EVP_sha256" +if test "x$ac_cv_func_EVP_sha256" = xyes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_EVP_SHA256 1 +_ACEOF + +fi +done + + if test "x$ac_cv_func_EVP_sha256" != "xyes"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: EVP_sha256 not found, may have issues with WiMAX certificates" >&5 +$as_echo "$as_me: WARNING: EVP_sha256 not found, may have issues with WiMAX certificates" >&2;} + fi + + for ac_func in EC_GROUP_free +do : + ac_fn_c_check_func "$LINENO" "EC_GROUP_free" "ac_cv_func_EC_GROUP_free" +if test "x$ac_cv_func_EC_GROUP_free" = xyes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_EC_GROUP_FREE 1 +_ACEOF + +fi +done + + if test "x$ac_cv_func_EC_GROUP_free" != "xyes"; then + +fail="$fail EC_GROUP_free" + + fi +fi + + + targetname=rlm_eap_pwd +else + targetname= + echo \*\*\* module rlm_eap_pwd is disabled. + + +fr_status="disabled" + +fi + +if test x"$fail" != x""; then + targetname="" + + + if test x"${enable_strict_dependencies}" = x"yes"; then + as_fn_error $? "set --without-rlm_eap_pwd to disable it explicitly." "$LINENO" 5 + else + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: silently not building rlm_eap_pwd." >&5 +$as_echo "$as_me: WARNING: silently not building rlm_eap_pwd." >&2;} + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: FAILURE: rlm_eap_pwd requires: $fail." >&5 +$as_echo "$as_me: WARNING: FAILURE: rlm_eap_pwd requires: $fail." >&2;}; + fail="$(echo $fail)" + + +fr_status="skipping (requires $fail)" + + fr_features= + + fi + +else + + +fr_status="OK" + +fi + +if test x"$fr_features" = x""; then + $as_echo "$fr_status" > "config.report" +else + $as_echo_n "$fr_status ... " > "config.report" + cat "config.report.tmp" >> "config.report" +fi + +rm "config.report.tmp" + + + + + + + +ac_config_files="$ac_config_files all.mk" + +cat >confcache <<\_ACEOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs, see configure's option --config-cache. +# It is not useful on other systems. If it contains results you don't +# want to keep, you may remove or edit it. +# +# config.status only pays attention to the cache file if you give it +# the --recheck option to rerun configure. +# +# `ac_cv_env_foo' variables (set or unset) will be overridden when +# loading this file, other *unset* `ac_cv_foo' will be assigned the +# following values. + +_ACEOF + +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, we kill variables containing newlines. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +( + for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do + eval ac_val=\$$ac_var + case $ac_val in #( + *${as_nl}*) + case $ac_var in #( + *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5 +$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;; + esac + case $ac_var in #( + _ | IFS | as_nl) ;; #( + BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #( + *) { eval $ac_var=; unset $ac_var;} ;; + esac ;; + esac + done + + (set) 2>&1 | + case $as_nl`(ac_space=' '; set) 2>&1` in #( + *${as_nl}ac_space=\ *) + # `set' does not quote correctly, so add quotes: double-quote + # substitution turns \\\\ into \\, and sed turns \\ into \. + sed -n \ + "s/'/'\\\\''/g; + s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p" + ;; #( + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p" + ;; + esac | + sort +) | + sed ' + /^ac_cv_env_/b end + t clear + :clear + s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/ + t end + s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/ + :end' >>confcache +if diff "$cache_file" confcache >/dev/null 2>&1; then :; else + if test -w "$cache_file"; then + if test "x$cache_file" != "x/dev/null"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5 +$as_echo "$as_me: updating cache $cache_file" >&6;} + if test ! -f "$cache_file" || test -h "$cache_file"; then + cat confcache >"$cache_file" + else + case $cache_file in #( + */* | ?:*) + mv -f confcache "$cache_file"$$ && + mv -f "$cache_file"$$ "$cache_file" ;; #( + *) + mv -f confcache "$cache_file" ;; + esac + fi + fi + else + { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5 +$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;} + fi +fi +rm -f confcache + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +# Transform confdefs.h into DEFS. +# Protect against shell expansion while executing Makefile rules. +# Protect against Makefile macro expansion. +# +# If the first sed substitution is executed (which looks for macros that +# take arguments), then branch to the quote section. Otherwise, +# look for a macro that doesn't take arguments. +ac_script=' +:mline +/\\$/{ + N + s,\\\n,, + b mline +} +t clear +:clear +s/^[ ]*#[ ]*define[ ][ ]*\([^ (][^ (]*([^)]*)\)[ ]*\(.*\)/-D\1=\2/g +t quote +s/^[ ]*#[ ]*define[ ][ ]*\([^ ][^ ]*\)[ ]*\(.*\)/-D\1=\2/g +t quote +b any +:quote +s/[ `~#$^&*(){}\\|;'\''"<>?]/\\&/g +s/\[/\\&/g +s/\]/\\&/g +s/\$/$$/g +H +:any +${ + g + s/^\n// + s/\n/ /g + p +} +' +DEFS=`sed -n "$ac_script" confdefs.h` + + +ac_libobjs= +ac_ltlibobjs= +U= +for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue + # 1. Remove the extension, and $U if already installed. + ac_script='s/\$U\././;s/\.o$//;s/\.obj$//' + ac_i=`$as_echo "$ac_i" | sed "$ac_script"` + # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR + # will be set to the directory where LIBOBJS objects are built. + as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext" + as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo' +done +LIBOBJS=$ac_libobjs + +LTLIBOBJS=$ac_ltlibobjs + + + +: "${CONFIG_STATUS=./config.status}" +ac_write_fail=0 +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files $CONFIG_STATUS" +{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5 +$as_echo "$as_me: creating $CONFIG_STATUS" >&6;} +as_write_fail=0 +cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1 +#! $SHELL +# Generated by $as_me. +# Run this file to recreate the current configuration. +# Compiler output produced by configure, useful for debugging +# configure, is in config.log if it exists. + +debug=false +ac_cs_recheck=false +ac_cs_silent=false + +SHELL=\${CONFIG_SHELL-$SHELL} +export SHELL +_ASEOF +cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1 +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. 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"could not create $ac_file" "$LINENO" 5 + +test -z "$ac_datarootdir_hack$ac_datarootdir_seen" && + { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } && + { ac_out=`sed -n '/^[ ]*datarootdir[ ]*:*=/p' \ + "$ac_tmp/out"`; test -z "$ac_out"; } && + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir' +which seems to be undefined. Please make sure it is defined" >&5 +$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir' +which seems to be undefined. Please make sure it is defined" >&2;} + + rm -f "$ac_tmp/stdin" + case $ac_file in + -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";; + *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";; + esac \ + || as_fn_error $? "could not create $ac_file" "$LINENO" 5 + ;; + + + + esac + +done # for ac_tag + + +as_fn_exit 0 +_ACEOF +ac_clean_files=$ac_clean_files_save + +test $ac_write_fail = 0 || + as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5 + + +# configure is writing to config.log, and then calls config.status. +# config.status does its own redirection, appending to config.log. +# Unfortunately, on DOS this fails, as config.log is still kept open +# by configure, so config.status won't be able to write to it; its +# output is simply discarded. So we exec the FD to /dev/null, +# effectively closing config.log, so it can be properly (re)opened and +# appended to by config.status. When coming back to configure, we +# need to make the FD available again. +if test "$no_create" != yes; then + ac_cs_success=: + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false + exec 5>>config.log + # Use ||, not &&, to avoid exiting from the if with $? = 1, which + # would make configure fail if this is the last instruction. + $ac_cs_success || as_fn_exit 1 +fi +if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} +fi + diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/configure.ac b/src/modules/rlm_eap/types/rlm_eap_pwd/configure.ac new file mode 100644 index 0000000..1833b38 --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/configure.ac @@ -0,0 +1,80 @@ +AC_PREREQ([2.69]) +AC_INIT +AC_CONFIG_SRCDIR([rlm_eap_pwd.c]) +AC_REVISION($Revision$) +FR_INIT_MODULE([rlm_eap_pwd]) + +mod_ldflags= +mod_cflags= + +FR_MODULE_START_TESTS + +dnl ############################################################ +dnl # Check for command line options +dnl ############################################################ + +dnl extra argument: --with-openssl-lib-dir +openssl_lib_dir= +AC_ARG_WITH(openssl-lib-dir, + [AS_HELP_STRING([--with-openssl-lib-dir=DIR], + [directory for LDAP library files])], + [case "$withval" in + no) + AC_MSG_ERROR(Need openssl-lib-dir) + ;; + yes) + ;; + *) + openssl_lib_dir="$withval" + ;; + esac]) + +dnl extra argument: --with-openssl-include-dir +openssl_include_dir= +AC_ARG_WITH(openssl-include-dir, + [AS_HELP_STRING([--with-openssl-include-dir=DIR], + [directory for LDAP include files])], + [case "$withval" in + no) + AC_MSG_ERROR(Need openssl-include-dir) + ;; + yes) + ;; + *) + openssl_include_dir="$withval" + ;; + esac]) + +dnl ############################################################ +dnl # Check for header files +dnl ############################################################ + +smart_try_dir=$openssl_include_dir +FR_SMART_CHECK_INCLUDE(openssl/ec.h) +if test "$ac_cv_header_openssl_ec_h" != "yes"; then + FR_MODULE_FAIL([openssl/ec.h]) +fi + +smart_try_dir=$openssl_lib_dir +FR_SMART_CHECK_LIB(crypto, EVP_CIPHER_CTX_new) +if test "x$ac_cv_lib_crypto_EVP_CIPHER_CTX_new" != "xyes"; then + FR_MODULE_FAIL([libssl]) +else + AC_CHECK_FUNCS(EVP_sha256) + if test "x$ac_cv_func_EVP_sha256" != "xyes"; then + AC_MSG_WARN([EVP_sha256 not found, may have issues with WiMAX certificates]) + fi + + AC_CHECK_FUNCS(EC_GROUP_free) + if test "x$ac_cv_func_EC_GROUP_free" != "xyes"; then + FR_MODULE_FAIL([EC_GROUP_free]) + fi +fi + +FR_MODULE_END_TESTS + +AC_SUBST(mod_ldflags) +AC_SUBST(mod_cflags) + +AC_CONFIG_FILES([all.mk]) +AC_OUTPUT diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/const_time.h b/src/modules/rlm_eap/types/rlm_eap_pwd/const_time.h new file mode 100644 index 0000000..b717dd5 --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/const_time.h @@ -0,0 +1,190 @@ +/* + * Helper functions for constant time operations + * Copyright (c) 2019, The Linux Foundation + * + * This software may be distributed under the terms of the BSD license. + * See README for more details. + * + * These helper functions can be used to implement logic that needs to minimize + * externally visible differences in execution path by avoiding use of branches, + * avoiding early termination or other time differences, and forcing same memory + * access pattern regardless of values. + */ + +#ifndef CONST_TIME_H +#define CONST_TIME_H + + +#if defined(__clang__) +#define NO_UBSAN_UINT_OVERFLOW \ + __attribute__((no_sanitize("unsigned-integer-overflow"))) +#else +#define NO_UBSAN_UINT_OVERFLOW +#endif + +/** + * const_time_fill_msb - Fill all bits with MSB value + * @param val Input value + * @return Value with all the bits set to the MSB of the input val + */ +static inline unsigned int const_time_fill_msb(unsigned int val) +{ + /* Move the MSB to LSB and multiple by -1 to fill in all bits. */ + return (val >> (sizeof(val) * 8 - 1)) * ~0U; +} + + +/* @return -1 if val is zero; 0 if val is not zero */ +static inline unsigned int const_time_is_zero(unsigned int val) + NO_UBSAN_UINT_OVERFLOW +{ + /* Set MSB to 1 for 0 and fill rest of bits with the MSB value */ + return const_time_fill_msb(~val & (val - 1)); +} + + +/* @return -1 if a == b; 0 if a != b */ +static inline unsigned int const_time_eq(unsigned int a, unsigned int b) +{ + return const_time_is_zero(a ^ b); +} + + +/* @return -1 if a == b; 0 if a != b */ +static inline unsigned char const_time_eq_u8(unsigned int a, unsigned int b) +{ + return (unsigned char) const_time_eq(a, b); +} + + +/** + * const_time_eq_bin - Constant time memory comparison + * @param a First buffer to compare + * @param b Second buffer to compare + * @param len Number of octets to compare + * @return -1 if buffers are equal, 0 if not + * + * This function is meant for comparing passwords or hash values where + * difference in execution time or memory access pattern could provide external + * observer information about the location of the difference in the memory + * buffers. The return value does not behave like memcmp(), i.e., + * const_time_eq_bin() cannot be used to sort items into a defined order. Unlike + * memcmp(), the execution time of const_time_eq_bin() does not depend on the + * contents of the compared memory buffers, but only on the total compared + * length. + */ +static inline unsigned int const_time_eq_bin(const void *a, const void *b, + size_t len) +{ + const unsigned char *aa = a; + const unsigned char *bb = b; + size_t i; + unsigned char res = 0; + + for (i = 0; i < len; i++) + res |= aa[i] ^ bb[i]; + + return const_time_is_zero(res); +} + + +/** + * const_time_select - Constant time unsigned int selection + * @param mask 0 (false) or -1 (true) to identify which value to select + * @param true_val Value to select for the true case + * @param false_val Value to select for the false case + * @return true_val if mask == -1, false_val if mask == 0 + */ +static inline unsigned int const_time_select(unsigned int mask, + unsigned int true_val, + unsigned int false_val) +{ + return (mask & true_val) | (~mask & false_val); +} + + +/** + * const_time_select_int - Constant time int selection + * @param mask 0 (false) or -1 (true) to identify which value to select + * @param true_val Value to select for the true case + * @param false_val Value to select for the false case + * @return true_val if mask == -1, false_val if mask == 0 + */ +static inline int const_time_select_int(unsigned int mask, int true_val, + int false_val) +{ + return (int) const_time_select(mask, (unsigned int) true_val, + (unsigned int) false_val); +} + + +/** + * const_time_select_u8 - Constant time u8 selection + * @param mask 0 (false) or -1 (true) to identify which value to select + * @param true_val Value to select for the true case + * @param false_val Value to select for the false case + * @return true_val if mask == -1, false_val if mask == 0 + */ +static inline unsigned char const_time_select_u8(unsigned char mask, unsigned char true_val, unsigned char false_val) +{ + return (unsigned char) const_time_select(mask, true_val, false_val); +} + + +/** + * const_time_select_s8 - Constant time s8 selection + * @param mask 0 (false) or -1 (true) to identify which value to select + * @param true_val Value to select for the true case + * @param false_val Value to select for the false case + * @return true_val if mask == -1, false_val if mask == 0 + */ +static inline char const_time_select_s8(char mask, char true_val, char false_val) +{ + return (char) const_time_select(mask, (unsigned int) true_val, + (unsigned int) false_val); +} + + +/** + * const_time_select_bin - Constant time binary buffer selection copy + * @param mask 0 (false) or -1 (true) to identify which value to copy + * @param true_val Buffer to copy for the true case + * @param false_val Buffer to copy for the false case + * @param len Number of octets to copy + * @param dst Destination buffer for the copy + * + * This function copies the specified buffer into the destination buffer using + * operations with identical memory access pattern regardless of which buffer + * is being copied. + */ +static inline void const_time_select_bin(unsigned char mask, const unsigned char *true_val, + const unsigned char *false_val, size_t len, + unsigned char *dst) +{ + size_t i; + + for (i = 0; i < len; i++) + dst[i] = const_time_select_u8(mask, true_val[i], false_val[i]); +} + + +static inline int const_time_memcmp(const void *a, const void *b, size_t len) +{ + const unsigned char *aa = a; + const unsigned char *bb = b; + int diff, res = 0; + unsigned int mask; + + if (len == 0) + return 0; + do { + len--; + diff = (int) aa[len] - (int) bb[len]; + mask = const_time_is_zero((unsigned int) diff); + res = const_time_select_int(mask, res, diff); + } while (len); + + return res; +} + +#endif /* CONST_TIME_H */ diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/eap_pwd.c b/src/modules/rlm_eap/types/rlm_eap_pwd/eap_pwd.c new file mode 100644 index 0000000..2626052 --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/eap_pwd.c @@ -0,0 +1,933 @@ +/** + * copyright holder grants permission for redistribution and use in source + * and binary forms, with or without modification, provided that the + * following conditions are met: + * 1. Redistribution of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer + * in all source files. + * 2. Redistribution in binary form must retain the above copyright + * notice, this list of conditions, and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * + * "DISCLAIMER OF LIABILITY + * + * THIS SOFTWARE IS PROVIDED BY DAN HARKINS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INDUSTRIAL LOUNGE BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE." + * + * This license and distribution terms cannot be changed. In other words, + * this code cannot simply be copied and put under a different distribution + * license (including the GNU public license). + * + * @copyright (c) Dan Harkins, 2012 + */ + +RCSID("$Id$") +USES_APPLE_DEPRECATED_API /* OpenSSL API has been deprecated by Apple */ + +#include "eap_pwd.h" +#include "const_time.h" +#include <freeradius-devel/openssl3.h> + +static uint8_t allzero[SHA256_DIGEST_LENGTH] = { 0x00 }; + +/* The random function H(x) = HMAC-SHA256(0^32, x) */ +static void pwd_hmac_final(HMAC_CTX *hmac_ctx, uint8_t *digest) +{ + unsigned int mdlen = SHA256_DIGEST_LENGTH; + HMAC_Final(hmac_ctx, digest, &mdlen); +// HMAC_CTX_reset(hmac_ctx); +} + +/* a counter-based KDF based on NIST SP800-108 */ +static void eap_pwd_kdf(uint8_t *key, int keylen, char const *label, + int label_len, uint8_t *result, int result_bit_len) +{ + HMAC_CTX *hmac_ctx; + uint8_t digest[SHA256_DIGEST_LENGTH]; + uint16_t i, ctr, L; + int result_byte_len, len = 0; + unsigned int mdlen = SHA256_DIGEST_LENGTH; + uint8_t mask = 0xff; + + MEM(hmac_ctx = HMAC_CTX_new()); + result_byte_len = (result_bit_len + 7) / 8; + + ctr = 0; + L = htons(result_bit_len); + while (len < result_byte_len) { + ctr++; i = htons(ctr); + + HMAC_Init_ex(hmac_ctx, key, keylen, EVP_sha256(), NULL); + if (ctr > 1) HMAC_Update(hmac_ctx, digest, mdlen); + HMAC_Update(hmac_ctx, (uint8_t *) &i, sizeof(uint16_t)); + HMAC_Update(hmac_ctx, (uint8_t const *)label, label_len); + HMAC_Update(hmac_ctx, (uint8_t *) &L, sizeof(uint16_t)); + HMAC_Final(hmac_ctx, digest, &mdlen); + if ((len + (int) mdlen) > result_byte_len) { + memcpy(result + len, digest, result_byte_len - len); + } else { + memcpy(result + len, digest, mdlen); + } + len += mdlen; +// HMAC_CTX_reset(hmac_ctx); + } + + /* since we're expanding to a bit length, mask off the excess */ + if (result_bit_len % 8) { + mask <<= (8 - (result_bit_len % 8)); + result[result_byte_len - 1] &= mask; + } + + HMAC_CTX_free(hmac_ctx); +} + +static BIGNUM *consttime_BN (void) +{ + BIGNUM *bn; + + bn = BN_new(); + if (bn) BN_set_flags(bn, BN_FLG_CONSTTIME); + return bn; +} + +/* + * compute the legendre symbol in constant time + */ +static int legendre(BIGNUM *a, BIGNUM *p, BN_CTX *bnctx) +{ + int symbol; + unsigned int mask; + BIGNUM *res, *pm1over2; + + pm1over2 = consttime_BN(); + res = consttime_BN(); + + if (!BN_sub(pm1over2, p, BN_value_one()) || + !BN_rshift1(pm1over2, pm1over2) || + !BN_mod_exp_mont_consttime(res, a, pm1over2, p, bnctx, NULL)) { + BN_free(pm1over2); + BN_free(res); + return -2; + } + + symbol = -1; + mask = const_time_eq(BN_is_word(res, 1), 1); + symbol = const_time_select_int(mask, 1, symbol); + mask = const_time_eq(BN_is_zero(res), 1); + symbol = const_time_select_int(mask, -1, symbol); + + BN_free(pm1over2); + BN_free(res); + + return symbol; +} + +static void do_equation(EC_GROUP *group, BIGNUM *y2, BIGNUM *x, BN_CTX *bnctx) +{ + BIGNUM *p, *a, *b, *tmp1, *pm1; + + tmp1 = BN_new(); + pm1 = BN_new(); + p = BN_new(); + a = BN_new(); + b = BN_new(); + EC_GROUP_get_curve(group, p, a, b, bnctx); + + BN_sub(pm1, p, BN_value_one()); + + /* + * y2 = x^3 + ax + b + */ + BN_mod_sqr(tmp1, x, p, bnctx); + BN_mod_mul(y2, tmp1, x, p, bnctx); + BN_mod_mul(tmp1, a, x, p, bnctx); + BN_mod_add_quick(y2, y2, tmp1, p); + BN_mod_add_quick(y2, y2, b, p); + + BN_free(tmp1); + BN_free(pm1); + BN_free(p); + BN_free(a); + BN_free(b); + + return; +} + +static int is_quadratic_residue(BIGNUM *val, BIGNUM *p, BIGNUM *qr, BIGNUM *qnr, BN_CTX *bnctx) +{ + int offset, check, ret = 0; + BIGNUM *r = NULL, *pm1 = NULL, *res = NULL, *qr_or_qnr = NULL; + unsigned int mask; + unsigned char *qr_bin = NULL, *qnr_bin = NULL, *qr_or_qnr_bin = NULL; + + if (((r = consttime_BN()) == NULL) || + ((res = consttime_BN()) == NULL) || + ((qr_or_qnr = consttime_BN()) == NULL) || + ((pm1 = consttime_BN()) == NULL)) { + ret = -2; + goto fail; + } + + if (((qr_bin = (unsigned char *)malloc(BN_num_bytes(p))) == NULL) || + ((qnr_bin = (unsigned char *)malloc(BN_num_bytes(p))) == NULL) || + ((qr_or_qnr_bin = (unsigned char *)malloc(BN_num_bytes(p))) == NULL)) { + ret = -2; + goto fail; + } + + /* + * we select binary in constant time so make them binary + */ + memset(qr_bin, 0, BN_num_bytes(p)); + memset(qnr_bin, 0, BN_num_bytes(p)); + memset(qr_or_qnr_bin, 0, BN_num_bytes(p)); + + offset = BN_num_bytes(p) - BN_num_bytes(qr); + BN_bn2bin(qr, qr_bin + offset); + + offset = BN_num_bytes(p) - BN_num_bytes(qnr); + BN_bn2bin(qnr, qnr_bin + offset); + + /* + * r = (random() mod p-1) + 1 + */ + BN_sub(pm1, p, BN_value_one()); + BN_rand_range(r, pm1); + BN_add(r, r, BN_value_one()); + + BN_copy(res, val); + + /* + * res = val * r * r which ensures res != val but has same quadratic residocity + */ + BN_mod_mul(res, res, r, p, bnctx); + BN_mod_mul(res, res, r, p, bnctx); + + /* + * if r is even (mask is -1) then multiply by qnr and our check is qnr + * otherwise multiply by qr and our check is qr + */ + mask = const_time_is_zero(BN_is_odd(r)); + const_time_select_bin(mask, qnr_bin, qr_bin, BN_num_bytes(p), qr_or_qnr_bin); + BN_bin2bn(qr_or_qnr_bin, BN_num_bytes(p), qr_or_qnr); + BN_mod_mul(res, res, qr_or_qnr, p, bnctx); + check = const_time_select_int(mask, -1, 1); + + if ((ret = legendre(res, p, bnctx)) == -2) { + ret = -1; /* just say no it's not */ + goto fail; + } + mask = const_time_eq(ret, check); + ret = const_time_select_int(mask, 1, 0); + +fail: + if (qr_bin != NULL) free(qr_bin); + if (qnr_bin != NULL) free(qnr_bin); + if (qr_or_qnr_bin != NULL) free(qr_or_qnr_bin); + BN_free(r); + BN_free(res); + BN_free(qr_or_qnr); + BN_free(pm1); + + return ret; +} + +int compute_password_element (REQUEST *request, pwd_session_t *session, uint16_t grp_num, + char const *password, int password_len, + char const *id_server, int id_server_len, + char const *id_peer, int id_peer_len, + uint32_t *token) +{ + BIGNUM *x_candidate = NULL, *rnd = NULL, *y_sqrd = NULL, *qr = NULL, *qnr = NULL, *y1 = NULL, *y2 = NULL, *y = NULL, *exp = NULL; + EVP_MD_CTX *hmac_ctx; + EVP_PKEY *hmac_pkey; + uint8_t pwe_digest[SHA256_DIGEST_LENGTH], *prfbuf = NULL, *xbuf = NULL, *pm1buf = NULL, *y1buf = NULL, *y2buf = NULL, *ybuf = NULL, ctr; + int nid, is_odd, primebitlen, primebytelen, ret = 0, found = 0, mask; + int save, i, rbits, qr_or_qnr, save_is_odd = 0, cmp; + unsigned int skip; + + MEM(hmac_ctx = EVP_MD_CTX_new()); + MEM(hmac_pkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, allzero, sizeof(allzero))); + + switch (grp_num) { /* from IANA registry for IKE D-H groups */ + case 19: + nid = NID_X9_62_prime256v1; + break; + + case 20: + nid = NID_secp384r1; + break; + + case 21: + nid = NID_secp521r1; + break; + + case 25: + nid = NID_X9_62_prime192v1; + break; + + case 26: + nid = NID_secp224r1; + break; + + default: + DEBUG("unknown group %d", grp_num); + goto fail; + } + + session->pwe = NULL; + session->order = NULL; + session->prime = NULL; + + if ((session->group = EC_GROUP_new_by_curve_name(nid)) == NULL) { + DEBUG("unable to create EC_GROUP"); + goto fail; + } + + if (((rnd = consttime_BN()) == NULL) || + ((session->pwe = EC_POINT_new(session->group)) == NULL) || + ((session->order = consttime_BN()) == NULL) || + ((session->prime = consttime_BN()) == NULL) || + ((qr = consttime_BN()) == NULL) || + ((qnr = consttime_BN()) == NULL) || + ((x_candidate = consttime_BN()) == NULL) || + ((y_sqrd = consttime_BN()) == NULL) || + ((y1 = consttime_BN()) == NULL) || + ((y2 = consttime_BN()) == NULL) || + ((y = consttime_BN()) == NULL) || + ((exp = consttime_BN()) == NULL)) { + DEBUG("unable to create bignums"); + goto fail; + } + + if (!EC_GROUP_get_curve(session->group, session->prime, NULL, NULL, NULL)) { + DEBUG("unable to get prime for GFp curve"); + goto fail; + } + + if (!EC_GROUP_get_order(session->group, session->order, NULL)) { + DEBUG("unable to get order for curve"); + goto fail; + } + + primebitlen = BN_num_bits(session->prime); + primebytelen = BN_num_bytes(session->prime); + if ((prfbuf = talloc_zero_array(session, uint8_t, primebytelen)) == NULL) { + DEBUG("unable to alloc space for prf buffer"); + goto fail; + } + if ((xbuf = talloc_zero_array(request, uint8_t, primebytelen)) == NULL) { + DEBUG("unable to alloc space for x buffer"); + goto fail; + } + if ((pm1buf = talloc_zero_array(request, uint8_t, primebytelen)) == NULL) { + DEBUG("unable to alloc space for pm1 buffer"); + goto fail; + } + if ((y1buf = talloc_zero_array(request, uint8_t, primebytelen)) == NULL) { + DEBUG("unable to alloc space for y1 buffer"); + goto fail; + } + if ((y2buf = talloc_zero_array(request, uint8_t, primebytelen)) == NULL) { + DEBUG("unable to alloc space for y2 buffer"); + goto fail; + } + if ((ybuf = talloc_zero_array(request, uint8_t, primebytelen)) == NULL) { + DEBUG("unable to alloc space for y buffer"); + goto fail; + } + + + /* + * derive random quadradic residue and quadratic non-residue + */ + do { + BN_rand_range(qr, session->prime); + } while (legendre(qr, session->prime, session->bnctx) != 1); + + do { + BN_rand_range(qnr, session->prime); + } while (legendre(qnr, session->prime, session->bnctx) != -1); + + if (!BN_sub(rnd, session->prime, BN_value_one())) { + goto fail; + } + BN_bn2bin(rnd, pm1buf); + + save_is_odd = 0; + found = 0; + memset(xbuf, 0, primebytelen); + ctr = 0; + while (ctr < 40) { + ctr++; + + /* + * compute counter-mode password value and stretch to prime + * pwd-seed = H(token | peer-id | server-id | password | + * counter) + */ + EVP_DigestSignInit(hmac_ctx, NULL, EVP_sha256(), NULL, hmac_pkey); + EVP_DigestSignUpdate(hmac_ctx, (uint8_t *)token, sizeof(*token)); + EVP_DigestSignUpdate(hmac_ctx, (uint8_t const *)id_peer, id_peer_len); + EVP_DigestSignUpdate(hmac_ctx, (uint8_t const *)id_server, id_server_len); + EVP_DigestSignUpdate(hmac_ctx, (uint8_t const *)password, password_len); + EVP_DigestSignUpdate(hmac_ctx, (uint8_t *)&ctr, sizeof(ctr)); + + { + size_t mdlen = SHA256_DIGEST_LENGTH; + + EVP_DigestSignFinal(hmac_ctx, pwe_digest, &mdlen); + EVP_MD_CTX_reset(hmac_ctx); + } + + BN_bin2bn(pwe_digest, SHA256_DIGEST_LENGTH, rnd); + eap_pwd_kdf(pwe_digest, SHA256_DIGEST_LENGTH, "EAP-pwd Hunting And Pecking", + strlen("EAP-pwd Hunting And Pecking"), prfbuf, primebitlen); + + /* + * eap_pwd_kdf() returns a string of bits 0..primebitlen but + * BN_bin2bn will treat that string of bits as a big endian + * number. If the primebitlen is not an even multiple of 8 + * then excessive bits-- those _after_ primebitlen-- so now + * we have to shift right the amount we masked off. + */ + if (primebitlen % 8) { + rbits = 8 - (primebitlen % 8); + for (i = primebytelen - 1; i > 0; i--) { + prfbuf[i] = (prfbuf[i - 1] << (8 - rbits)) | (prfbuf[i] >> rbits); + } + prfbuf[0] >>= rbits; + } + BN_bin2bn(prfbuf, primebytelen, x_candidate); + + /* + * it would've been better if the spec reduced the candidate + * modulo the prime but it didn't. So if the candidate >= prime + * we need to skip it but still run through the operations below + */ + cmp = const_time_memcmp(pm1buf, prfbuf, primebytelen); + skip = const_time_fill_msb((unsigned int)cmp); + + /* + * need to unambiguously identify the solution, if there is + * one.. + */ + is_odd = BN_is_odd(rnd); + + /* + * check whether x^3 + a*x + b is a quadratic residue + * + * save the first quadratic residue we find in the loop but do + * it in constant time. + */ + do_equation(session->group, y_sqrd, x_candidate, session->bnctx); + qr_or_qnr = is_quadratic_residue(y_sqrd, session->prime, qr, qnr, session->bnctx); + + /* + * if the candidate >= prime then we want to skip it + */ + qr_or_qnr = const_time_select(skip, 0, qr_or_qnr); + + /* + * if we haven't found PWE yet (found = 0) then mask will be true, + * if we have found PWE then mask will be false + */ + mask = const_time_select(found, 0, -1); + + /* + * save will be 1 if we want to save this value-- i.e. we haven't + * found PWE yet and this is a quadratic residue-- and 0 otherwise + */ + save = const_time_select(mask, qr_or_qnr, 0); + + /* + * mask will be true (-1) if we want to save this and false (0) + * otherwise + */ + mask = const_time_eq(save, 1); + + const_time_select_bin(mask, prfbuf, xbuf, primebytelen, xbuf); + save_is_odd = const_time_select(mask, is_odd, save_is_odd); + found = const_time_select(mask, -1, found); + } + + /* + * now we can savely construct PWE + */ + BN_bin2bn(xbuf, primebytelen, x_candidate); + do_equation(session->group, y_sqrd, x_candidate, session->bnctx); + if ( !BN_add(exp, session->prime, BN_value_one()) || + !BN_rshift(exp, exp, 2) || + !BN_mod_exp_mont_consttime(y1, y_sqrd, exp, session->prime, session->bnctx, NULL) || + !BN_sub(y2, session->prime, y1) || + !BN_bn2bin(y1, y1buf) || + !BN_bn2bin(y2, y2buf)) { + DEBUG("unable to compute y"); + goto fail; + } + mask = const_time_eq(save_is_odd, BN_is_odd(y1)); + const_time_select_bin(mask, y1buf, y2buf, primebytelen, ybuf); + if (BN_bin2bn(ybuf, primebytelen, y) == NULL || + !EC_POINT_set_affine_coordinates(session->group, session->pwe, x_candidate, y, session->bnctx)) { + DEBUG("unable to set point coordinate"); + goto fail; + } + + session->group_num = grp_num; + if (0) { + fail: /* DON'T free session, it's in handler->opaque */ + ret = -1; + } + + /* cleanliness and order.... */ + BN_clear_free(x_candidate); + BN_clear_free(y_sqrd); + BN_clear_free(qr); + BN_clear_free(qnr); + BN_clear_free(rnd); + BN_clear_free(y1); + BN_clear_free(y2); + BN_clear_free(y); + BN_clear_free(exp); + + if (prfbuf) talloc_free(prfbuf); + if (xbuf) talloc_free(xbuf); + if (pm1buf) talloc_free(pm1buf); + if (y1buf) talloc_free(y1buf); + if (y2buf) talloc_free(y2buf); + if (ybuf) talloc_free(ybuf); + + EVP_MD_CTX_free(hmac_ctx); + EVP_PKEY_free(hmac_pkey); + + return ret; +} + +int compute_scalar_element(REQUEST *request, pwd_session_t *session, BN_CTX *bn_ctx) +{ + BIGNUM *mask = NULL; + int ret = -1; + + MEM(session->private_value = BN_new()); + MEM(session->my_element = EC_POINT_new(session->group)); + MEM(session->my_scalar = BN_new()); + + MEM(mask = BN_new()); + + if (BN_rand_range(session->private_value, session->order) != 1) { + REDEBUG("Unable to get randomness for private_value"); + goto error; + } + if (BN_rand_range(mask, session->order) != 1) { + REDEBUG("Unable to get randomness for mask"); + goto error; + } + BN_add(session->my_scalar, session->private_value, mask); + BN_mod(session->my_scalar, session->my_scalar, session->order, bn_ctx); + + if (!EC_POINT_mul(session->group, session->my_element, NULL, session->pwe, mask, bn_ctx)) { + REDEBUG("Server element allocation failed"); + goto error; + } + + if (!EC_POINT_invert(session->group, session->my_element, bn_ctx)) { + REDEBUG("Server element inversion failed"); + goto error; + } + + ret = 0; + +error: + BN_clear_free(mask); + + return ret; +} + +int process_peer_commit(REQUEST *request, pwd_session_t *session, uint8_t *in, size_t in_len, BN_CTX *bn_ctx) +{ + uint8_t *ptr; + size_t data_len; + BIGNUM *x = NULL, *y = NULL, *cofactor = NULL; + EC_POINT *K = NULL, *point = NULL; + int ret = 1; + + MEM(session->peer_scalar = BN_new()); + MEM(session->k = BN_new()); + MEM(session->peer_element = EC_POINT_new(session->group)); + MEM(point = EC_POINT_new(session->group)); + MEM(K = EC_POINT_new(session->group)); + + MEM(cofactor = BN_new()); + MEM(x = BN_new()); + MEM(y = BN_new()); + + if (!EC_GROUP_get_cofactor(session->group, cofactor, NULL)) { + REDEBUG("Unable to get group co-factor"); + goto finish; + } + + /* element, x then y, followed by scalar */ + ptr = (uint8_t *)in; + data_len = BN_num_bytes(session->prime); + + /* + * Did the peer send enough data? + */ + if (in_len < (2 * data_len + BN_num_bytes(session->order))) { + REDEBUG("Invalid commit packet"); + goto finish; + } + + BN_bin2bn(ptr, data_len, x); + ptr += data_len; + BN_bin2bn(ptr, data_len, y); + ptr += data_len; + + data_len = BN_num_bytes(session->order); + BN_bin2bn(ptr, data_len, session->peer_scalar); + + /* validate received scalar */ + if (BN_is_zero(session->peer_scalar) || + BN_is_one(session->peer_scalar) || + BN_cmp(session->peer_scalar, session->order) >= 0) { + REDEBUG("Peer's scalar is not within the allowed range"); + goto finish; + } + + if (!EC_POINT_set_affine_coordinates(session->group, session->peer_element, x, y, bn_ctx)) { + REDEBUG("Unable to get coordinates of peer's element"); + goto finish; + } + + /* validate received element */ + if (!EC_POINT_is_on_curve(session->group, session->peer_element, bn_ctx) || + EC_POINT_is_at_infinity(session->group, session->peer_element)) { + REDEBUG("Peer's element is not a point on the elliptic curve"); + goto finish; + } + + /* check to ensure peer's element is not in a small sub-group */ + if (BN_cmp(cofactor, BN_value_one())) { + if (!EC_POINT_mul(session->group, point, NULL, session->peer_element, cofactor, NULL)) { + REDEBUG("Unable to multiply element by co-factor"); + goto finish; + } + + if (EC_POINT_is_at_infinity(session->group, point)) { + REDEBUG("Peer's element is in small sub-group"); + goto finish; + } + } + + /* detect reflection attacks */ + if (BN_cmp(session->peer_scalar, session->my_scalar) == 0 || + EC_POINT_cmp(session->group, session->peer_element, session->my_element, bn_ctx) == 0) { + REDEBUG("Reflection attack detected"); + goto finish; + } + + /* compute the shared key, k */ + if ((!EC_POINT_mul(session->group, K, NULL, session->pwe, session->peer_scalar, bn_ctx)) || + (!EC_POINT_add(session->group, K, K, session->peer_element, bn_ctx)) || + (!EC_POINT_mul(session->group, K, NULL, K, session->private_value, bn_ctx))) { + REDEBUG("Unable to compute shared key, k"); + goto finish; + } + + /* ensure that the shared key isn't in a small sub-group */ + if (BN_cmp(cofactor, BN_value_one())) { + if (!EC_POINT_mul(session->group, K, NULL, K, cofactor, NULL)) { + REDEBUG("Unable to multiply k by co-factor"); + goto finish; + } + } + + /* + * This check is strictly speaking just for the case above where + * co-factor > 1 but it was suggested that even though this is probably + * never going to happen it is a simple and safe check "just to be + * sure" so let's be safe. + */ + if (EC_POINT_is_at_infinity(session->group, K)) { + REDEBUG("K is point-at-infinity"); + goto finish; + } + + if (!EC_POINT_get_affine_coordinates(session->group, K, session->k, NULL, bn_ctx)) { + REDEBUG("Unable to get shared secret from K"); + goto finish; + } + ret = 0; + +finish: + EC_POINT_clear_free(K); + EC_POINT_clear_free(point); + BN_clear_free(cofactor); + BN_clear_free(x); + BN_clear_free(y); + + return ret; +} + +int compute_server_confirm(REQUEST *request, pwd_session_t *session, uint8_t *out, BN_CTX *bn_ctx) +{ + BIGNUM *x = NULL, *y = NULL; + HMAC_CTX *hmac_ctx = NULL; + uint8_t *cruft = NULL; + int offset, req = -1; + + /* + * Each component of the cruft will be at most as big as the prime + */ + MEM(cruft = talloc_zero_array(session, uint8_t, BN_num_bytes(session->prime))); + MEM(x = BN_new()); + MEM(y = BN_new()); + + /* + * commit is H(k | server_element | server_scalar | peer_element | + * peer_scalar | ciphersuite) + */ + MEM(hmac_ctx = HMAC_CTX_new()); + HMAC_Init_ex(hmac_ctx, allzero, SHA256_DIGEST_LENGTH, EVP_sha256(), NULL); + + /* + * Zero the memory each time because this is mod prime math and some + * value may start with a few zeros and the previous one did not. + * + * First is k + */ + offset = BN_num_bytes(session->prime) - BN_num_bytes(session->k); + BN_bn2bin(session->k, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + /* + * next is server element: x, y + */ + if (!EC_POINT_get_affine_coordinates(session->group, session->my_element, x, y, bn_ctx)) { + REDEBUG("Unable to get coordinates of server element"); + goto finish; + } + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->prime) - BN_num_bytes(x); + BN_bn2bin(x, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->prime) - BN_num_bytes(y); + BN_bn2bin(y, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + /* + * and server scalar + */ + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->order) - BN_num_bytes(session->my_scalar); + BN_bn2bin(session->my_scalar, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->order)); + + /* + * next is peer element: x, y + */ + if (!EC_POINT_get_affine_coordinates(session->group, session->peer_element, x, y, bn_ctx)) { + REDEBUG("Unable to get coordinates of peer's element"); + goto finish; + } + + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->prime) - BN_num_bytes(x); + BN_bn2bin(x, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->prime) - BN_num_bytes(y); + BN_bn2bin(y, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + /* + * and peer scalar + */ + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->order) - BN_num_bytes(session->peer_scalar); + BN_bn2bin(session->peer_scalar, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->order)); + + /* + * finally, ciphersuite + */ + HMAC_Update(hmac_ctx, (uint8_t *)&session->ciphersuite, sizeof(session->ciphersuite)); + + pwd_hmac_final(hmac_ctx, out); + + req = 0; + +finish: + HMAC_CTX_free(hmac_ctx); + talloc_free(cruft); + BN_free(x); + BN_free(y); + + return req; +} + +int compute_peer_confirm(REQUEST *request, pwd_session_t *session, uint8_t *out, BN_CTX *bn_ctx) +{ + BIGNUM *x = NULL, *y = NULL; + HMAC_CTX *hmac_ctx = NULL; + uint8_t *cruft = NULL; + int offset, req = -1; + + /* + * Each component of the cruft will be at most as big as the prime + */ + MEM(cruft = talloc_zero_array(session, uint8_t, BN_num_bytes(session->prime))); + MEM(x = BN_new()); + MEM(y = BN_new()); + + /* + * commit is H(k | server_element | server_scalar | peer_element | + * peer_scalar | ciphersuite) + */ + MEM(hmac_ctx = HMAC_CTX_new()); + HMAC_Init_ex(hmac_ctx, allzero, SHA256_DIGEST_LENGTH, EVP_sha256(), NULL); + + /* + * Zero the memory each time because this is mod prime math and some + * value may start with a few zeros and the previous one did not. + * + * First is k + */ + offset = BN_num_bytes(session->prime) - BN_num_bytes(session->k); + BN_bn2bin(session->k, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + /* + * then peer element: x, y + */ + if (!EC_POINT_get_affine_coordinates(session->group, session->peer_element, x, y, bn_ctx)) { + REDEBUG("Unable to get coordinates of peer's element"); + goto finish; + } + + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->prime) - BN_num_bytes(x); + BN_bn2bin(x, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->prime) - BN_num_bytes(y); + BN_bn2bin(y, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + /* + * and peer scalar + */ + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->order) - BN_num_bytes(session->peer_scalar); + BN_bn2bin(session->peer_scalar, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->order)); + + /* + * then server element: x, y + */ + if (!EC_POINT_get_affine_coordinates(session->group, session->my_element, x, y, bn_ctx)) { + REDEBUG("Unable to get coordinates of server element"); + goto finish; + } + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->prime) - BN_num_bytes(x); + BN_bn2bin(x, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->prime) - BN_num_bytes(y); + BN_bn2bin(y, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + /* + * and server scalar + */ + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->order) - BN_num_bytes(session->my_scalar); + BN_bn2bin(session->my_scalar, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->order)); + + /* + * finally, ciphersuite + */ + HMAC_Update(hmac_ctx, (uint8_t *)&session->ciphersuite, sizeof(session->ciphersuite)); + + pwd_hmac_final(hmac_ctx, out); + + req = 0; +finish: + HMAC_CTX_free(hmac_ctx); + talloc_free(cruft); + BN_free(x); + BN_free(y); + + return req; +} + +int compute_keys(UNUSED REQUEST *request, pwd_session_t *session, uint8_t *peer_confirm, uint8_t *msk, uint8_t *emsk) +{ + HMAC_CTX *hmac_ctx; + uint8_t mk[SHA256_DIGEST_LENGTH], *cruft; + uint8_t session_id[SHA256_DIGEST_LENGTH + 1]; + uint8_t msk_emsk[128]; /* 64 each */ + int offset; + + MEM(cruft = talloc_array(session, uint8_t, BN_num_bytes(session->prime))); + MEM(hmac_ctx = HMAC_CTX_new()); + + /* + * first compute the session-id = TypeCode | H(ciphersuite | scal_p | + * scal_s) + */ + session_id[0] = PW_EAP_PWD; + HMAC_Init_ex(hmac_ctx, allzero, SHA256_DIGEST_LENGTH, EVP_sha256(), NULL); + HMAC_Update(hmac_ctx, (uint8_t *)&session->ciphersuite, sizeof(session->ciphersuite)); + offset = BN_num_bytes(session->order) - BN_num_bytes(session->peer_scalar); + memset(cruft, 0, BN_num_bytes(session->prime)); + BN_bn2bin(session->peer_scalar, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->order)); + offset = BN_num_bytes(session->order) - BN_num_bytes(session->my_scalar); + memset(cruft, 0, BN_num_bytes(session->prime)); + BN_bn2bin(session->my_scalar, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->order)); + pwd_hmac_final(hmac_ctx, (uint8_t *)&session_id[1]); + + /* then compute MK = H(k | commit-peer | commit-server) */ + HMAC_Init_ex(hmac_ctx, allzero, SHA256_DIGEST_LENGTH, EVP_sha256(), NULL); + + memset(cruft, 0, BN_num_bytes(session->prime)); + offset = BN_num_bytes(session->prime) - BN_num_bytes(session->k); + BN_bn2bin(session->k, cruft + offset); + HMAC_Update(hmac_ctx, cruft, BN_num_bytes(session->prime)); + + HMAC_Update(hmac_ctx, peer_confirm, SHA256_DIGEST_LENGTH); + + HMAC_Update(hmac_ctx, session->my_confirm, SHA256_DIGEST_LENGTH); + + pwd_hmac_final(hmac_ctx, mk); + + /* stretch the mk with the session-id to get MSK | EMSK */ + eap_pwd_kdf(mk, SHA256_DIGEST_LENGTH, (char const *)session_id, + SHA256_DIGEST_LENGTH + 1, msk_emsk, 1024); /* it's bits, ((64 + 64) * 8) */ + + memcpy(msk, msk_emsk, 64); + memcpy(emsk, msk_emsk + 64, 64); + + HMAC_CTX_free(hmac_ctx); + talloc_free(cruft); + return 0; +} diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/eap_pwd.h b/src/modules/rlm_eap/types/rlm_eap_pwd/eap_pwd.h new file mode 100644 index 0000000..a40a346 --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/eap_pwd.h @@ -0,0 +1,126 @@ +/* + * Copyright (c) Dan Harkins, 2012 + * + * Copyright holder grants permission for redistribution and use in source + * and binary forms, with or without modification, provided that the + * following conditions are met: + * 1. Redistribution of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer + * in all source files. + * 2. Redistribution in binary form must retain the above copyright + * notice, this list of conditions, and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * + * "DISCLAIMER OF LIABILITY + * + * THIS SOFTWARE IS PROVIDED BY DAN HARKINS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INDUSTRIAL LOUNGE BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE." + * + * This license and distribution terms cannot be changed. In other words, + * this code cannot simply be copied and put under a different distribution + * license (including the GNU public license). + */ + +#ifndef _EAP_PWD_H +#define _EAP_PWD_H + +RCSIDH(eap_pwd_h, "$Id$") +#include "eap.h" + +#include <openssl/bn.h> +#include <openssl/sha.h> +#include <openssl/ec.h> +#include <openssl/evp.h> +#include <openssl/hmac.h> + +typedef struct _pwd_hdr { + uint8_t lm_exchange; +#define EAP_PWD_EXCH_ID 1 +#define EAP_PWD_EXCH_COMMIT 2 +#define EAP_PWD_EXCH_CONFIRM 3 +// uint16_t total_length; /* there if the L-bit is set */ + uint8_t data[]; +} CC_HINT(packed) pwd_hdr; + +#define EAP_PWD_GET_LENGTH_BIT(x) ((x)->lm_exchange & 0x80) +#define EAP_PWD_SET_LENGTH_BIT(x) ((x)->lm_exchange |= 0x80) +#define EAP_PWD_GET_MORE_BIT(x) ((x)->lm_exchange & 0x40) +#define EAP_PWD_SET_MORE_BIT(x) ((x)->lm_exchange |= 0x40) +#define EAP_PWD_GET_EXCHANGE(x) ((x)->lm_exchange & 0x3f) +#define EAP_PWD_SET_EXCHANGE(x,y) ((x)->lm_exchange |= (y)) + +typedef struct _pwd_id_packet { + uint16_t group_num; + uint8_t random_function; +#define EAP_PWD_DEF_RAND_FUN 1 + uint8_t prf; +#define EAP_PWD_DEF_PRF 1 + uint8_t token[4]; + uint8_t prep; +#define EAP_PWD_PREP_NONE 0 +#define EAP_PWD_PREP_MS 1 +#define EAP_PWD_PREP_SASL 2 + char identity[]; +} CC_HINT(packed) pwd_id_packet_t; + +typedef struct _pwd_session_t { + uint16_t state; +#define PWD_STATE_ID_REQ 1 +#define PWD_STATE_COMMIT 2 +#define PWD_STATE_CONFIRM 3 + uint16_t group_num; + uint32_t ciphersuite; + uint32_t token; + char peer_id[MAX_STRING_LEN]; + size_t peer_id_len; + size_t mtu; + uint8_t *in; /* reassembled fragments */ + size_t in_pos; + size_t in_len; + uint8_t *out; /* message to fragment */ + size_t out_pos; + size_t out_len; + BN_CTX *bnctx; + EC_GROUP *group; + EC_POINT *pwe; + BIGNUM *order; + BIGNUM *prime; + BIGNUM *k; + BIGNUM *private_value; + BIGNUM *peer_scalar; + BIGNUM *my_scalar; + EC_POINT *my_element; + EC_POINT *peer_element; + uint8_t my_confirm[SHA256_DIGEST_LENGTH]; + uint8_t prep; + uint8_t salt_present; + uint8_t salt_len; + uint8_t salt[255]; +} pwd_session_t; + +int compute_password_element(REQUEST *request, pwd_session_t *sess, uint16_t grp_num, + char const *password, int password_len, + char const *id_server, int id_server_len, + char const *id_peer, int id_peer_len, + uint32_t *token); +int compute_scalar_element(REQUEST *request, pwd_session_t *sess, BN_CTX *bnctx); +int process_peer_commit(REQUEST *request, pwd_session_t *sess, uint8_t *in, size_t in_len, BN_CTX *bnctx); +int compute_server_confirm(REQUEST *request, pwd_session_t *sess, uint8_t *out, BN_CTX *bnctx); +int compute_peer_confirm(REQUEST *request, pwd_session_t *sess, uint8_t *out, BN_CTX *bnctx); +int compute_keys(REQUEST *request, pwd_session_t *sess, uint8_t *peer_confirm, + uint8_t *msk, uint8_t *emsk); +#ifdef PRINTBUF +void print_buf(char *str, uint8_t *buf, int len); +#endif /* PRINTBUF */ + +#endif /* _EAP_PWD_H */ diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/rlm_eap_pwd.c b/src/modules/rlm_eap/types/rlm_eap_pwd/rlm_eap_pwd.c new file mode 100644 index 0000000..4992a2a --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/rlm_eap_pwd.c @@ -0,0 +1,972 @@ +/* + * Copyright (c) Dan Harkins, 2012 + * + * Copyright holder grants permission for redistribution and use in source + * and binary forms, with or without modification, provided that the + * following conditions are met: + * 1. Redistribution of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer + * in all source files. + * 2. Redistribution in binary form must retain the above copyright + * notice, this list of conditions, and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * + * "DISCLAIMER OF LIABILITY + * + * THIS SOFTWARE IS PROVIDED BY DAN HARKINS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INDUSTRIAL LOUNGE BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE." + * + * This license and distribution terms cannot be changed. In other words, + * this code cannot simply be copied and put under a different distribution + * license (including the GNU public license). + */ + +RCSID("$Id$") +USES_APPLE_DEPRECATED_API /* OpenSSL API has been deprecated by Apple */ + +#include "rlm_eap_pwd.h" + +#include "eap_pwd.h" + +#define MPPE_KEY_LEN 32 +#define MSK_EMSK_LEN (2*MPPE_KEY_LEN) + +/* EAP-PWD can use different preprocessing (prep) modes to mangle the password + * before proving to both parties that they both know the same (mangled) password. + * + * The server advertises a preprocessing mode to the client. Only "none" is + * mandatory to implement. + * + * What is a good selection on the preprocessing mode? + * + * a) the server uses a hashed password + * b) the client uses a hashed password + * + * a | b | result + * --+---+--------------------------------------- + * n | n | none + * n | y | hint needed (cannot know automatically) + * y | n | select by hash given + * y | y | only works if both have the same hash; select by hash given + * + * Which hash functions does the server or client need to implement? + * + * a | b | server | client + * --+---+------------------------+---------------------- + * n | n | none | none + * n | y | as configured | none + * y | n | none | as selected by server + * y | y | none | none + * + * RFC 5931 defines 3 and RFC 8146 another 8 hash functions to implement. + * Can we avoid implementing them all? Only if they are provided as hash by some + * other module, e.g. in SQL or statically in password database. + * + * Therefore we select the preprocessing mode by the type of password given if + * in automatic mode: + * a) Cleartext-Password or User-Password: None. + * If the client only supports a hash (e.g. on Windows it might only have an + * NT-Password), do not provide a Cleartext-Password attribute but instead + * preprocess the password externally (e.g. hash the Cleartext-Password + * into an NT-Password and drop the Cleartext-Password). + * b) NT-Password: rfc2759 (prep=MS). + * The NT-Password Hash is hashed into a HashNTPasswordHash hash. + * c) EAP-Pwd-Password-Hash - provides hash as binary + * EAP-Pwd-Password-Salt - (optional) salt to be transmitted to client + * (RFC 8146) + * EAP-Pwd-Password-Prep - constant to transmit to client in prep field + * + * Though, there is one issue left. The method needs to be selected in + * EAP-PWD-ID/Request, that is the first message from server and thus before + * the client sent its peer-id. This is feasable using the EAP-Identity frame + * (outer identity); EAP-PWD does transmit its peer-id in plaintext anyway. + * So we need a toggle for this, in case anybody needs rlm_eap_pwd to use + * only the peer_id (inner identity). This toogle is an integer to also support + * setting currently unknown nor not implemented preprocessing methods. + * + * The toogle is named "prep", is a module configuration item, and accepts the + * following values: + * prep | meaning + * -------+-------------------------------------------------------------------- + * -1 | [automatic] discover using method described above from EAP-Identity + * | as User-Name before EAP-PWD-Id/Request + * 0..255 | [static] Fixed password preprocessing method. Expects virtual + * | server to provide matching password given EAP-PWD + * | peer-id as User-Name. The virtual server is provided + * | with EAP-Pwd-Password-Prep containing the configured + * | prep value. + * else | reserved/invalid + * + * Attributes to provide Password/Password-Hash and possibly salt. + * prep | accepted attributes + * -------+-------------------------------------------------------------------- + * -1 | see above for automatic discovery + * 0 | Use Cleartext-Password or give cleartext in EAP-Pwd-Password-Hash + * 1 | Use NT-Password, Cleartext-Password, User-Password or + * | give hashed NT-Password hash in EAP-Pwd-Password-Hash + * 2..255 | Use EAP-Pwd-Password-Hash and possibly EAP-Pwd-Pasword-Salt. + * + * To be able to pass EAP-Pwd-Password-Hash and EAP-Pwd-Password-Salt als hex + * string, they are decoded as hex if module config option unhex=1 (default). + * Set it to zero if you provide binary input. + */ + +static CONF_PARSER pwd_module_config[] = { + { "group", FR_CONF_OFFSET(PW_TYPE_INTEGER, eap_pwd_t, group), "19" }, + { "fragment_size", FR_CONF_OFFSET(PW_TYPE_INTEGER, eap_pwd_t, fragment_size), "1020" }, + { "server_id", FR_CONF_OFFSET(PW_TYPE_STRING, eap_pwd_t, server_id), NULL }, + { "virtual_server", FR_CONF_OFFSET(PW_TYPE_STRING, eap_pwd_t, virtual_server), NULL }, + { "prep", FR_CONF_OFFSET(PW_TYPE_SIGNED, eap_pwd_t, prep), "0" }, + { "unhex", FR_CONF_OFFSET(PW_TYPE_SIGNED, eap_pwd_t, unhex), "1" }, + CONF_PARSER_TERMINATOR +}; + +static int mod_instantiate (CONF_SECTION *cs, void **instance) +{ + eap_pwd_t *inst; + + *instance = inst = talloc_zero(cs, eap_pwd_t); + if (!inst) return -1; + + if (cf_section_parse(cs, inst, pwd_module_config) < 0) { + return -1; + } + + if (inst->fragment_size < 100) { + cf_log_err_cs(cs, "Fragment size is too small"); + return -1; + } + + if (inst->prep < -1 || inst->prep > 255) { + cf_log_err_cs(cs, "Invalid value for password preparation method: %d", inst->prep); + return -1; + } + + return 0; +} + +static int _free_pwd_session (pwd_session_t *session) +{ + BN_clear_free(session->private_value); + BN_clear_free(session->peer_scalar); + BN_clear_free(session->my_scalar); + BN_clear_free(session->k); + EC_POINT_clear_free(session->my_element); + EC_POINT_clear_free(session->peer_element); + EC_GROUP_free(session->group); + EC_POINT_clear_free(session->pwe); + BN_clear_free(session->order); + BN_clear_free(session->prime); + BN_CTX_free(session->bnctx); + + return 0; +} + +static int send_pwd_request (pwd_session_t *session, EAP_DS *eap_ds) +{ + size_t len; + uint16_t totlen; + pwd_hdr *hdr; + + len = (session->out_len - session->out_pos) + sizeof(pwd_hdr); + rad_assert(len > 0); + eap_ds->request->code = PW_EAP_REQUEST; + eap_ds->request->type.num = PW_EAP_PWD; + eap_ds->request->type.length = (len > session->mtu) ? session->mtu : len; + eap_ds->request->type.data = talloc_zero_array(eap_ds->request, uint8_t, eap_ds->request->type.length); + hdr = (pwd_hdr *)eap_ds->request->type.data; + + switch (session->state) { + case PWD_STATE_ID_REQ: + EAP_PWD_SET_EXCHANGE(hdr, EAP_PWD_EXCH_ID); + break; + + case PWD_STATE_COMMIT: + EAP_PWD_SET_EXCHANGE(hdr, EAP_PWD_EXCH_COMMIT); + break; + + case PWD_STATE_CONFIRM: + EAP_PWD_SET_EXCHANGE(hdr, EAP_PWD_EXCH_CONFIRM); + break; + + default: + ERROR("rlm_eap_pwd: PWD state is invalid. Can't send request"); + return 0; + } + /* + * are we fragmenting? + */ + if (((session->out_len - session->out_pos) + sizeof(pwd_hdr)) > session->mtu) { + EAP_PWD_SET_MORE_BIT(hdr); + if (session->out_pos == 0) { + /* + * the first fragment, add the total length + */ + EAP_PWD_SET_LENGTH_BIT(hdr); + totlen = ntohs(session->out_len); + memcpy(hdr->data, (char *)&totlen, sizeof(totlen)); + memcpy(hdr->data + sizeof(uint16_t), + session->out, + session->mtu - sizeof(pwd_hdr) - sizeof(uint16_t)); + session->out_pos += (session->mtu - sizeof(pwd_hdr) - sizeof(uint16_t)); + } else { + /* + * an intermediate fragment + */ + memcpy(hdr->data, session->out + session->out_pos, (session->mtu - sizeof(pwd_hdr))); + session->out_pos += (session->mtu - sizeof(pwd_hdr)); + } + } else { + /* + * either it's not a fragment or it's the last fragment. + * The out buffer isn't needed anymore though so get rid of it. + */ + memcpy(hdr->data, session->out + session->out_pos, + (session->out_len - session->out_pos)); + talloc_free(session->out); + session->out = NULL; + session->out_pos = session->out_len = 0; + } + return 1; +} + +static void normify(REQUEST *request, VALUE_PAIR *vp) +{ + size_t decoded; + size_t expected_len; + uint8_t *buffer; + + rad_assert((vp->da->type == PW_TYPE_OCTETS) || (vp->da->type == PW_TYPE_STRING)); + + if (vp->vp_length % 2 != 0 || vp->vp_length == 0) return; + + expected_len = vp->vp_length / 2; + buffer = talloc_zero_array(request, uint8_t, expected_len); + rad_assert(buffer); + + decoded = fr_hex2bin(buffer, expected_len, vp->vp_strvalue, vp->vp_length); + if (decoded == expected_len) { + RDEBUG2("Normalizing %s from hex encoding, %zu bytes -> %zu bytes", + vp->da->name, vp->vp_length, decoded); + fr_pair_value_memcpy(vp, buffer, decoded); + } else { + RDEBUG2("Normalizing %s from hex encoding, %zu bytes -> %zu bytes failed, got %zu bytes", + vp->da->name, vp->vp_length, expected_len, decoded); + } + + talloc_free(buffer); +} + +static int fetch_and_process_password(pwd_session_t *session, REQUEST *request, eap_pwd_t *inst) { + REQUEST *fake; + VALUE_PAIR *vp, *pw; + const char *pwbuf; + int pw_len; + uint8_t nthash[MD4_DIGEST_LENGTH]; + uint8_t nthashash[MD4_DIGEST_LENGTH]; + int ret = -1; + eap_type_t old_eap_type = 0; + + if ((fake = request_alloc_fake(request)) == NULL) { + RDEBUG("pwd unable to create fake request!"); + return ret; + } + fake->username = fr_pair_afrom_num(fake->packet, PW_USER_NAME, 0); + if (!fake->username) { + RDEBUG("Failed creating pair for peer id"); + goto out; + } + fr_pair_value_bstrncpy(fake->username, session->peer_id, session->peer_id_len); + fr_pair_add(&fake->packet->vps, fake->username); + + if (inst->prep >= 0) { + vp = fr_pair_afrom_num(fake->packet, PW_EAP_PWD_PASSWORD_PREP, 0); + rad_assert(vp != NULL); + vp->vp_byte = inst->prep; + fr_pair_add(&fake->packet->vps, vp); + } + + if ((vp = fr_pair_find_by_num(request->config, PW_VIRTUAL_SERVER, 0, TAG_ANY)) != NULL) { + fake->server = vp->vp_strvalue; + } else if (inst->virtual_server) { + fake->server = inst->virtual_server; + } /* else fake->server == request->server */ + + if ((vp = fr_pair_find_by_num(request->packet->vps, PW_EAP_TYPE, 0, TAG_ANY)) != NULL) { + /* EAP-Type = NAK here if inst->prep == -1. + * But this does not help the virtual server to differentiate + * based on which EAP method was selected, that is to properly + * prepare session-state: for PWD. + * So fake EAP-Type = PWD here for the time of the inner request. + */ + old_eap_type = vp->vp_integer; + vp->vp_integer = PW_EAP_PWD; + } + RDEBUG("Sending tunneled request"); + rdebug_pair_list(L_DBG_LVL_1, request, fake->packet->vps, NULL); + + if (fake->server) { + RDEBUG("server %s {", fake->server); + } else { + RDEBUG("server {"); + } + + /* + * Call authorization recursively, which will + * get the password. + */ + RINDENT(); + process_authorize(0, fake); + REXDENT(); + + /* + * Note that we don't do *anything* with the reply + * attributes. + */ + if (fake->server) { + RDEBUG("} # server %s", fake->server); + } else { + RDEBUG("}"); + } + + RDEBUG("Got tunneled reply code %d", fake->reply->code); + rdebug_pair_list(L_DBG_LVL_1, request, fake->reply->vps, NULL); + + if (old_eap_type && (vp = fr_pair_find_by_num(request->packet->vps, PW_EAP_TYPE, 0, TAG_ANY)) != NULL) { + vp->vp_integer = old_eap_type; + } + + pw = fr_pair_find_by_num(fake->config, PW_CLEARTEXT_PASSWORD, 0, TAG_ANY); + if (!pw) { + pw = fr_pair_find_by_num(fake->config, PW_USER_PASSWORD, 0, TAG_ANY); + } + + if (pw && (inst->prep < 0 || inst->prep == EAP_PWD_PREP_NONE)) { + VERIFY_VP(pw); + session->prep = EAP_PWD_PREP_NONE; + + RDEBUG("Use Cleartext-Password or User-Password for %s to do pwd authentication", + session->peer_id); + + pwbuf = pw->vp_strvalue; + pw_len = pw->vp_length; + + goto success; + } + + pw = fr_pair_find_by_num(fake->config, PW_NT_PASSWORD, 0, TAG_ANY); + + if (pw && (inst->prep < 0 || inst->prep == EAP_PWD_PREP_MS)) { + VERIFY_VP(pw); + session->prep = EAP_PWD_PREP_MS; + + RDEBUG("Use NT-Password for %s to do pwd authentication", + session->peer_id); + + if (pw->vp_length != MD4_DIGEST_LENGTH) { + RDEBUG("NT-Password invalid length"); + goto out; + } + + fr_md4_calc(nthashash, pw->vp_octets, pw->vp_length); + pwbuf = (const char*) nthashash; + pw_len = MD4_DIGEST_LENGTH; + + goto success; + } + + pw = fr_pair_find_by_num(fake->config, PW_CLEARTEXT_PASSWORD, 0, TAG_ANY); + if (!pw) { + pw = fr_pair_find_by_num(fake->config, PW_USER_PASSWORD, 0, TAG_ANY); + } + + if (pw && inst->prep == EAP_PWD_PREP_MS) { + VERIFY_VP(pw); + session->prep = EAP_PWD_PREP_NONE; + + RDEBUG("Use Cleartext-Password or User-Password as NT-Password for %s to do pwd authentication", + session->peer_id); + + // compute NT-Hash from Cleartext-Password + ssize_t len; + uint8_t ucs2_password[512]; + len = fr_utf8_to_ucs2(ucs2_password, sizeof(ucs2_password), pw->vp_strvalue, pw->vp_length); + if (len < 0) { + ERROR("rlm_eap_pwd: Error converting password to UCS2"); + goto out; + } + fr_md4_calc(nthash, ucs2_password, len); + + fr_md4_calc(nthashash, nthash, MD4_DIGEST_LENGTH); + pwbuf = (const char*) nthashash; + pw_len = MD4_DIGEST_LENGTH; + + goto success; + } + + vp = fr_pair_find_by_num(fake->config, PW_EAP_PWD_PASSWORD_PREP, 0, TAG_ANY); + if (vp) { + VERIFY_VP(vp); + } + if (vp && inst->prep < 0) { + RDEBUG("Use EAP-Pwd-Password-Prep %u for %s to do pwd authentication", + vp->vp_byte, session->peer_id); + session->prep = vp->vp_byte; + } else if (vp && inst->prep != vp->vp_byte) { + RDEBUG2("Mismatch of configured password preparation method and provided EAP-Pwd-Password-Prep attribute type for %s", + session->peer_id); + goto out; + } else if (inst->prep < 0) { + RDEBUG2("Missing EAP-Pwd-Password-Prep for %s", + session->peer_id); + goto out; + } + + pw = fr_pair_find_by_num(fake->config, PW_EAP_PWD_PASSWORD_SALT, 0, TAG_ANY); + if (pw) { + VERIFY_VP(pw); + + RDEBUG("Use EAP-Pwd-Password-Salt for %s to do pwd authentication", + session->peer_id); + + if (inst->unhex) normify(request, pw); + + if (pw->vp_length > 255) { + /* salt len is 1 byte */ + RDEBUG("EAP-Pwd-Password-Salt too long (more than 255 octets)"); + goto out; + } + rad_assert(pw->vp_length <= sizeof(session->salt)); + + session->salt_present = 1; + session->salt_len = pw->vp_length; + memcpy(session->salt, pw->vp_octets, pw->vp_length); + } + + pw = fr_pair_find_by_num(fake->config, PW_EAP_PWD_PASSWORD_HASH, 0, TAG_ANY); + if (pw) { + VERIFY_VP(pw); + + RDEBUG("Use EAP-Pwd-Password-Hash for %s to do pwd authentication", + session->peer_id); + + if (inst->unhex) normify(request, pw); + + pwbuf = (const char*) pw->vp_octets; + pw_len = pw->vp_length; + + goto success; + } + + RDEBUG2("Mismatch of password preparation method and provided password attribute type for %s", + session->peer_id); + goto out; + +success: + if (RDEBUG_ENABLED4) { + char outbuf[1024]; + char *p = outbuf; + for (int i = 0; i < pw_len && p < outbuf + sizeof(outbuf) - 3; i++) { + p += sprintf(p, "%02hhX", pwbuf[i]); + } + RDEBUG4("hex pw data: %s (%d)", outbuf, pw_len); + } + + if (compute_password_element(request, session, session->group_num, + pwbuf, pw_len, + inst->server_id, strlen(inst->server_id), + session->peer_id, strlen(session->peer_id), + &session->token)) { + RDEBUG("failed to obtain password element"); + goto out; + } + + ret = 0; +out: + talloc_free(fake); + return ret; +} + +static int mod_session_init (void *instance, eap_handler_t *handler) +{ + pwd_session_t *session; + eap_pwd_t *inst = (eap_pwd_t *)instance; + VALUE_PAIR *vp; + pwd_id_packet_t *packet; + REQUEST *request; + + if (!inst || !handler) { + ERROR("rlm_eap_pwd: Initiate, NULL data provided"); + return 0; + } + + request = handler->request; + if (!request) { + ERROR("rlm_eap_pwd: NULL request provided"); + return 0; + } + + /* + * make sure the server's been configured properly + */ + if (!inst->server_id) { + ERROR("rlm_eap_pwd: Server ID is not configured"); + return 0; + } + switch (inst->group) { + case 19: + case 20: + case 21: + case 25: + case 26: + break; + + default: + ERROR("rlm_eap_pwd: Group is not supported"); + return 0; + } + + if ((session = talloc_zero(handler, pwd_session_t)) == NULL) return 0; + talloc_set_destructor(session, _free_pwd_session); + /* + * set things up so they can be free'd reliably + */ + session->group_num = inst->group; + session->private_value = NULL; + session->peer_scalar = NULL; + session->my_scalar = NULL; + session->k = NULL; + session->my_element = NULL; + session->peer_element = NULL; + session->group = NULL; + session->pwe = NULL; + session->order = NULL; + session->prime = NULL; + + session->bnctx = BN_CTX_new(); + if (session->bnctx == NULL) { + ERROR("rlm_eap_pwd: Failed to get BN context"); + return 0; + } + + /* + * The admin can dynamically change the MTU. + */ + session->mtu = inst->fragment_size; + vp = fr_pair_find_by_num(handler->request->packet->vps, PW_FRAMED_MTU, 0, TAG_ANY); + + /* + * session->mtu is *our* MTU. We need to subtract off the EAP + * overhead. + * + * 9 = 4 (EAPOL header) + 4 (EAP header) + 1 (EAP type) + * + * The fragmentation code deals with the included length + * so we don't need to subtract that here. + */ + if (vp && (vp->vp_integer > 100) && (vp->vp_integer < session->mtu)) { + session->mtu = vp->vp_integer - 9; + } + + session->state = PWD_STATE_ID_REQ; + session->in = NULL; + session->out_pos = 0; + handler->opaque = session; + + session->token = fr_rand(); + if (inst->prep < 0) { + RDEBUG2("using outer identity %s to configure EAP-PWD", handler->identity); + session->peer_id_len = strlen(handler->identity); + if (session->peer_id_len >= sizeof(session->peer_id)) { + RDEBUG("identity is malformed"); + return 0; + } + memcpy(session->peer_id, handler->identity, session->peer_id_len); + session->peer_id[session->peer_id_len] = '\0'; + + /* + * make fake request to get the password for the usable ID + * in order to identity prep + */ + if (fetch_and_process_password(session, handler->request, inst) < 0) { + RDEBUG("failed to find password for %s to do pwd authentication (init)", + session->peer_id); + return 0; + } + } else { + session->prep = inst->prep; + } + + /* + * construct an EAP-pwd-ID/Request + */ + session->out_len = sizeof(pwd_id_packet_t) + strlen(inst->server_id); + if ((session->out = talloc_zero_array(session, uint8_t, session->out_len)) == NULL) { + return 0; + } + + packet = (pwd_id_packet_t *)session->out; + packet->group_num = htons(session->group_num); + packet->random_function = EAP_PWD_DEF_RAND_FUN; + packet->prf = EAP_PWD_DEF_PRF; + memcpy(packet->token, (char *)&session->token, 4); + packet->prep = session->prep; + memcpy(packet->identity, inst->server_id, session->out_len - sizeof(pwd_id_packet_t) ); + + handler->stage = PROCESS; + + return send_pwd_request(session, handler->eap_ds); +} + +static int mod_process(void *arg, eap_handler_t *handler) +{ + pwd_session_t *session; + pwd_hdr *hdr; + pwd_id_packet_t *packet; + REQUEST *request; + eap_packet_t *response; + EAP_DS *eap_ds; + size_t in_len, peer_id_len; + int ret = 0; + eap_pwd_t *inst = (eap_pwd_t *)arg; + uint16_t offset; + uint8_t exch, *in, *ptr, msk[MSK_EMSK_LEN], emsk[MSK_EMSK_LEN]; + uint8_t peer_confirm[SHA256_DIGEST_LENGTH]; + char *peer_id; + + if (((eap_ds = handler->eap_ds) == NULL) || !inst) return 0; + + session = (pwd_session_t *)handler->opaque; + request = handler->request; + response = handler->eap_ds->response; + hdr = (pwd_hdr *)response->type.data; + + /* + * The header must be at least one byte. + */ + if (!hdr || (response->type.length < sizeof(pwd_hdr))) { + RDEBUG("Packet with insufficient data"); + return 0; + } + + in = hdr->data; + in_len = response->type.length - sizeof(pwd_hdr); + + /* + * see if we're fragmenting, if so continue until we're done + */ + if (session->out_pos) { + if (in_len) RDEBUG2("pwd got something more than an ACK for a fragment"); + + return send_pwd_request(session, eap_ds); + } + + /* + * the first fragment will have a total length, make a + * buffer to hold all the fragments + */ + if (EAP_PWD_GET_LENGTH_BIT(hdr)) { + if (session->in) { + RDEBUG2("pwd already alloced buffer for fragments"); + return 0; + } + + if (in_len < 2) { + RDEBUG("Invalid packet: length bit set, but no length field"); + return 0; + } + + session->in_len = ntohs(in[0] * 256 | in[1]); + if ((session->in = talloc_zero_array(session, uint8_t, session->in_len)) == NULL) { + RDEBUG2("pwd cannot allocate %zd buffer to hold fragments", + session->in_len); + return 0; + } + memset(session->in, 0, session->in_len); + session->in_pos = 0; + in += sizeof(uint16_t); + in_len -= sizeof(uint16_t); + } + + /* + * all fragments, including the 1st will have the M(ore) bit set, + * buffer those fragments! + */ + if (EAP_PWD_GET_MORE_BIT(hdr)) { + if (!session->in) { + RDEBUG2("Unexpected fragment."); + return 0; + } + + if ((session->in_pos + in_len) > session->in_len) { + RDEBUG2("Fragment overflows packet."); + return 0; + } + + memcpy(session->in + session->in_pos, in, in_len); + session->in_pos += in_len; + + /* + * send back an ACK for this fragment + */ + exch = EAP_PWD_GET_EXCHANGE(hdr); + eap_ds->request->code = PW_EAP_REQUEST; + eap_ds->request->type.num = PW_EAP_PWD; + eap_ds->request->type.length = sizeof(pwd_hdr); + if ((eap_ds->request->type.data = talloc_array(eap_ds->request, uint8_t, sizeof(pwd_hdr))) == NULL) { + return 0; + } + hdr = (pwd_hdr *)eap_ds->request->type.data; + EAP_PWD_SET_EXCHANGE(hdr, exch); + return 1; + } + + + if (session->in) { + /* + * the last fragment... + */ + if ((session->in_pos + in_len) > session->in_len) { + RDEBUG2("pwd will not overflow a fragment buffer. Nope, not prudent"); + return 0; + } + memcpy(session->in + session->in_pos, in, in_len); + in = session->in; + in_len = session->in_len; + } + + switch (session->state) { + case PWD_STATE_ID_REQ: + { + BIGNUM *x = NULL, *y = NULL; + + if (EAP_PWD_GET_EXCHANGE(hdr) != EAP_PWD_EXCH_ID) { + RDEBUG2("pwd exchange is incorrect: not ID"); + return 0; + } + + packet = (pwd_id_packet_t *) in; + if (in_len < sizeof(*packet)) { + RDEBUG("Packet is too small (%zd < %zd).", in_len, sizeof(*packet)); + return 0; + } + + if ((packet->prf != EAP_PWD_DEF_PRF) || + (packet->random_function != EAP_PWD_DEF_RAND_FUN) || + (packet->prep != session->prep) || + (CRYPTO_memcmp(packet->token, &session->token, 4)) || + (packet->group_num != ntohs(session->group_num))) { + RDEBUG2("pwd id response is invalid"); + return 0; + } + /* + * we've agreed on the ciphersuite, record it... + */ + ptr = (uint8_t *)&session->ciphersuite; + memcpy(ptr, (char *)&packet->group_num, sizeof(uint16_t)); + ptr += sizeof(uint16_t); + *ptr = EAP_PWD_DEF_RAND_FUN; + ptr += sizeof(uint8_t); + *ptr = EAP_PWD_DEF_PRF; + + peer_id_len = in_len - sizeof(pwd_id_packet_t); + if (peer_id_len >= sizeof(session->peer_id)) { + RDEBUG2("pwd id response is malformed"); + return 0; + } + peer_id = packet->identity; + + if (inst->prep >= 0) { + /* + * make fake request to get the password for the usable ID + */ + + session->peer_id_len = peer_id_len; + memcpy(session->peer_id, peer_id, peer_id_len); + session->peer_id[peer_id_len] = '\0'; + + if (fetch_and_process_password(session, request, inst) < 0) { + RDEBUG2("failed to find password for %s to do pwd authentication", + session->peer_id); + return 0; + } + } else { + /* verify inner identity == outer identity */ + if (session->peer_id_len != peer_id_len || + memcmp(session->peer_id, peer_id, peer_id_len) != 0) { + char buf[sizeof(session->peer_id)]; + memcpy(buf, peer_id, peer_id_len); + buf[peer_id_len] = '\0'; + + RDEBUG2("inner identity(peer_id) %s does not match outer identity %s", + buf, session->peer_id); + return 0; + } + RDEBUG2("inner identity matched for %s", session->peer_id); + } + + /* + * compute our scalar and element + */ + if (compute_scalar_element(request, session, session->bnctx)) { + DEBUG2("failed to compute server's scalar and element"); + return 0; + } + + MEM(x = BN_new()); + MEM(y = BN_new()); + + /* + * element is a point, get both coordinates: x and y + */ + if (!EC_POINT_get_affine_coordinates(session->group, session->my_element, x, y, + session->bnctx)) { + DEBUG2("server point assignment failed"); + BN_clear_free(x); + BN_clear_free(y); + return 0; + } + + /* + * construct request + */ + session->out_len = BN_num_bytes(session->order) + (2 * BN_num_bytes(session->prime)); + if (session->salt_present) + session->out_len += 1 + session->salt_len; + + if ((session->out = talloc_array(session, uint8_t, session->out_len)) == NULL) { + return 0; + } + memset(session->out, 0, session->out_len); + + ptr = session->out; + if (session->salt_present) { + *ptr = session->salt_len; + ptr++; + + memcpy(ptr, session->salt, session->salt_len); + ptr += session->salt_len; + } + + offset = BN_num_bytes(session->prime) - BN_num_bytes(x); + BN_bn2bin(x, ptr + offset); + BN_clear_free(x); + + ptr += BN_num_bytes(session->prime); + offset = BN_num_bytes(session->prime) - BN_num_bytes(y); + BN_bn2bin(y, ptr + offset); + BN_clear_free(y); + + ptr += BN_num_bytes(session->prime); + offset = BN_num_bytes(session->order) - BN_num_bytes(session->my_scalar); + BN_bn2bin(session->my_scalar, ptr + offset); + + session->state = PWD_STATE_COMMIT; + ret = send_pwd_request(session, eap_ds); + } + break; + + case PWD_STATE_COMMIT: + if (EAP_PWD_GET_EXCHANGE(hdr) != EAP_PWD_EXCH_COMMIT) { + RDEBUG2("pwd exchange is incorrect: not commit!"); + return 0; + } + + /* + * process the peer's commit and generate the shared key, k + */ + if (process_peer_commit(request, session, in, in_len, session->bnctx)) { + RDEBUG2("failed to process peer's commit"); + return 0; + } + + /* + * compute our confirm blob + */ + if (compute_server_confirm(request, session, session->my_confirm, session->bnctx)) { + ERROR("rlm_eap_pwd: failed to compute confirm!"); + return 0; + } + + /* + * construct a response...which is just our confirm blob + */ + session->out_len = SHA256_DIGEST_LENGTH; + if ((session->out = talloc_array(session, uint8_t, session->out_len)) == NULL) { + return 0; + } + + memset(session->out, 0, session->out_len); + memcpy(session->out, session->my_confirm, SHA256_DIGEST_LENGTH); + + session->state = PWD_STATE_CONFIRM; + ret = send_pwd_request(session, eap_ds); + break; + + case PWD_STATE_CONFIRM: + if (in_len < SHA256_DIGEST_LENGTH) { + RDEBUG("Peer confirm is too short (%zd < %d)", + in_len, SHA256_DIGEST_LENGTH); + return 0; + } + + if (EAP_PWD_GET_EXCHANGE(hdr) != EAP_PWD_EXCH_CONFIRM) { + RDEBUG2("pwd exchange is incorrect: not commit!"); + return 0; + } + if (compute_peer_confirm(request, session, peer_confirm, session->bnctx)) { + RDEBUG2("pwd exchange cannot compute peer's confirm"); + return 0; + } + if (CRYPTO_memcmp(peer_confirm, in, SHA256_DIGEST_LENGTH)) { + RDEBUG2("pwd exchange fails: peer confirm is incorrect!"); + return 0; + } + if (compute_keys(request, session, peer_confirm, msk, emsk)) { + RDEBUG2("pwd exchange cannot generate (E)MSK!"); + return 0; + } + eap_ds->request->code = PW_EAP_SUCCESS; + /* + * return the MSK (in halves) + */ + eap_add_reply(handler->request, "MS-MPPE-Recv-Key", msk, MPPE_KEY_LEN); + eap_add_reply(handler->request, "MS-MPPE-Send-Key", msk + MPPE_KEY_LEN, MPPE_KEY_LEN); + + ret = 1; + break; + + default: + RDEBUG2("unknown PWD state"); + return 0; + } + + /* + * we processed the buffered fragments, get rid of them + */ + if (session->in) { + talloc_free(session->in); + session->in = NULL; + } + + return ret; +} + +extern rlm_eap_module_t rlm_eap_pwd; +rlm_eap_module_t rlm_eap_pwd = { + .name = "eap_pwd", + .instantiate = mod_instantiate, /* Create new submodule instance */ + .session_init = mod_session_init, /* Create the initial request */ + .process = mod_process, /* Process next round of EAP method */ +}; + diff --git a/src/modules/rlm_eap/types/rlm_eap_pwd/rlm_eap_pwd.h b/src/modules/rlm_eap/types/rlm_eap_pwd/rlm_eap_pwd.h new file mode 100644 index 0000000..966646c --- /dev/null +++ b/src/modules/rlm_eap/types/rlm_eap_pwd/rlm_eap_pwd.h @@ -0,0 +1,51 @@ +/* + * Copyright (c) Dan Harkins, 2012 + * + * Copyright holder grants permission for redistribution and use in source + * and binary forms, with or without modification, provided that the + * following conditions are met: + * 1. Redistribution of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer + * in all source files. + * 2. Redistribution in binary form must retain the above copyright + * notice, this list of conditions, and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * + * "DISCLAIMER OF LIABILITY + * + * THIS SOFTWARE IS PROVIDED BY DAN HARKINS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INDUSTRIAL LOUNGE BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE." + * + * This license and distribution terms cannot be changed. In other words, + * this code cannot simply be copied and put under a different distribution + * license (including the GNU public license). + */ + +#ifndef _RLM_EAP_PWD_H +#define _RLM_EAP_PWD_H + +#include "eap_pwd.h" + +#include <freeradius-devel/radiusd.h> +#include <freeradius-devel/modules.h> + +typedef struct _eap_pwd_t { + uint32_t group; + uint32_t fragment_size; + char const *server_id; + char const *virtual_server; + int32_t prep; + int32_t unhex; +} eap_pwd_t; + +#endif /* _RLM_EAP_PWD_H */ |