[test suite] add AFL wrappers for Rijndael decryption fuzzing

test/afl/fuzzing-wrappers/helpers/fwknopd-enc-pkt-file.sh

@@ -0,0 +1,5 @@
+#!/bin/sh -x
+
+LD_LIBRARY_PATH=../../lib/.libs ../../server/.libs/fwknopd -c ../conf/default_fwknopd.conf -a ../conf/default_access.conf -A --afl-pkt-file test-cases/enc-pkts/spa.enc -f -t
+
+exit $?

test/afl/fuzzing-wrappers/server-enc-pkts.sh

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+#!/bin/sh -x
+
+#
+# Fuzz SPA packet encoding/decoding
+#
+
+. ./fuzzing-wrappers/fcns
+
+FDIR="enc-pkts.out"
+OUT_DIR="$TOP_DIR/$FDIR"
+PREV_OUT_DIR=''
+IN_DIR="test-cases/enc-pkts"
+
+### build up our afl-fuzz text banner
+TSTR="fwknopd,SPA,encrypt/decrypt"
+GIT_STR=''
+git_banner GIT_STR
+BANNER="$TSTR$GIT_STR"
+
+### set up directories
+dir_init $ARCHIVE_DIR $FDIR $OUT_DIR PREV_OUT_DIR
+
+### support resuming from a previous run
+if [ $@ ] && [ "$1" = "resume" ]
+then
+    IN_DIR=$PREV_OUT_DIR
+fi
+
+### make sure that reading a packet works (this is expected to error
+### out though since base64 decoding is short-circuited when AFL
+### support is compiled in).
+./fuzzing-wrappers/helpers/fwknopd-enc-pkt-file.sh
+
+LD_LIBRARY_PATH=$LIB_DIR afl-fuzz \
+    -T $BANNER -t 1000 -i $IN_DIR \
+    -o $OUT_DIR -f $OUT_DIR/afl_enc_pkt.data $SERVER \
+    -c ../conf/default_fwknopd.conf \
+    -a ../conf/default_access.conf \
+    -O ../conf/override_no_digest_tracking_fwknopd.conf \
+    -A --afl-pkt-file $OUT_DIR/afl_enc_pkt.data \
+    -f -t -v -v -v -r `pwd`/run
+
+exit $?

test/afl/test-cases/enc-pkts/spa.enc

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