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Add frontend for fuzzing

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Use the following configure command:

$ ./configure --with-fuzzer --with-fuzzer-lib=/path/to/libFuzzer.a \
      CC=clang CXX=clang++

Places an irssi-fuzz in src/fe-fuzz/ after build.

Also can specify SANFLAGS to override the chosen sanitizer flags
(defaults to "-g -fsanitize=address -fsanitize-coverage=trace-pc-guard").
This commit is contained in:
Joseph Bisch 2017-01-07 20:01:07 -05:00
commit cf46907256
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GPG key ID: CF08FAC339AB7E8E
8 changed files with 415 additions and 1 deletions
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40
configure.ac
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@ -52,6 +52,19 @@ AC_ARG_WITH(bot,
fi,
want_irssibot=no)
AC_ARG_WITH(fuzzer,
[ --with-fuzzer Build irssi-fuzzer],
if test x$withval = xno; then
want_irssifuzzer=no
else
want_irssifuzzer=yes
fi,
want_irssifuzzer=no)
AC_ARG_WITH(fuzzer-lib,
[ --with-fuzzer-lib Specify path to fuzzer library],
fuzzerlibpath="$withval")
AC_ARG_WITH(proxy,
[ --with-proxy Build irssi-proxy],
if test x$withval = xno; then
@ -297,6 +310,30 @@ if test "x$want_textui" != "xno"; then
fi
dnl **
dnl ** irssifuzzer checks
dnl **
if test "$want_irssifuzzer" != "no"; then
dnl * we need to build with -fsanitize-coverage=trace-pc-guard
dnl * otherwise fuzzer won't be very successful at finding bugs :)
if test -z "$SANFLAGS"; then
SANFLAGS="-g -fsanitize=address -fsanitize-coverage=trace-pc-guard"
fi
CFLAGS="$CFLAGS $SANFLAGS"
CXXFLAGS="$CXXFLAGS $SANFLAGS"
AC_MSG_CHECKING(for fuzzer library)
if test -z "$fuzzerlibpath"; then
AC_MSG_RESULT([not found, building without fuzzer front end])
want_irssifuzzer=no
else
FUZZER_LIBS="$fuzzerlibpath"
AC_SUBST(FUZZER_LIBS)
fi
fi
dnl **
dnl ** perl checks
dnl **
@ -456,6 +493,7 @@ fi
dnl ** check what we want to build
AM_CONDITIONAL(BUILD_TEXTUI, test "$want_textui" = "yes")
AM_CONDITIONAL(BUILD_IRSSIBOT, test "$want_irssibot" = "yes")
AM_CONDITIONAL(BUILD_IRSSIFUZZER, test "$want_irssifuzzer" = "yes")
AM_CONDITIONAL(BUILD_IRSSIPROXY, test "$want_irssiproxy" = "yes")
AM_CONDITIONAL(HAVE_PERL, test "$want_perl" != "no")
@ -572,6 +610,7 @@ src/fe-common/core/Makefile
src/fe-common/irc/Makefile
src/fe-common/irc/dcc/Makefile
src/fe-common/irc/notifylist/Makefile
src/fe-fuzz/Makefile
src/fe-none/Makefile
src/fe-text/Makefile
src/lib-config/Makefile
@ -611,6 +650,7 @@ echo
echo "Building text frontend ........... : $want_textui"
echo "Building irssi bot ............... : $want_irssibot"
echo "Building irssi fuzzer ............ : $want_irssifuzzer"
echo "Building irssi proxy ............. : $want_irssiproxy"
if test "x$have_gmodule" = "xyes"; then
echo "Building with module support ..... : yes"