test-dlopen llvm test

test-instr.c

@@ -18,6 +18,10 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
+#ifdef TEST_SHARED_OBJECT
+#define main main_exported
+#endif
+
 int main(int argc, char **argv) {
 
   int   fd = 0;

test/test-dlopen.c

@@ -0,0 +1,19 @@
+#include <dlfcn.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv) {
+
+  if (!getenv("TEST_DLOPEN_TARGET"))
+    return 1;
+  void* lib = dlopen(getenv("TEST_DLOPEN_TARGET"), RTLD_LAZY);
+  if (!lib) {
+    perror(dlerror());
+    return 2;
+  }
+  int (*func)(int, char**) = dlsym(lib, "main_exported");
+  if (!func)
+    return 3;
+  
+  return func(argc, argv);
+
+}

test/test-llvm.sh

@@ -43,6 +43,44 @@ test -e ../afl-clang-fast -a -e ../split-switches-pass.so && {
     $ECHO "$RED[!] llvm_mode failed"
     CODE=1
   }
+  ../afl-clang-fast -DTEST_SHARED_OBJECT=1 -z defs -fPIC -shared -o test-instr.so ../test-instr.c > /dev/null 2>&1
+  test -e test-instr.so && {
+    $ECHO "$GREEN[+] llvm_mode shared object with -z defs compilation succeeded"
+    ../afl-clang-fast -o test-dlopen.plain test-dlopen.c -ldl > /dev/null 2>&1
+    test -e test-dlopen.plain && {
+      $ECHO "$GREEN[+] llvm_mode test-dlopen compilation succeeded"
+          
+      echo 0 | TEST_DLOPEN_TARGET=./test-instr.so AFL_QUIET=1 ../afl-showmap -m ${MEM_LIMIT} -o test-dlopen.plain.0 -r -- ./test-dlopen.plain > /dev/null 2>&1
+      TEST_DLOPEN_TARGET=./test-instr.so AFL_QUIET=1 ../afl-showmap -m ${MEM_LIMIT} -o test-dlopen.plain.1 -r -- ./test-dlopen.plain < /dev/null > /dev/null 2>&1
+      test -e test-dlopen.plain.0 -a -e test-dlopen.plain.1 && {
+        diff test-dlopen.plain.0 test-dlopen.plain.1 > /dev/null 2>&1 && {
+          $ECHO "$RED[!] llvm_mode test-dlopen instrumentation should be different on different input but is not"
+          CODE=1
+        } || {
+          $ECHO "$GREEN[+] llvm_mode test-dlopen instrumentation present and working correctly"
+          TUPLES=`echo 0|TEST_DLOPEN_TARGET=./test-instr.so AFL_QUIET=1 ../afl-showmap -m ${MEM_LIMIT} -o /dev/null -- ./test-dlopen.plain 2>&1 | grep Captur | awk '{print$3}'`
+          test "$TUPLES" -gt 2 -a "$TUPLES" -lt 8 && {
+            $ECHO "$GREEN[+] llvm_mode test-dlopen run reported $TUPLES instrumented locations which is fine"
+          } || {
+            $ECHO "$RED[!] llvm_mode test-dlopen instrumentation produces weird numbers: $TUPLES"
+            CODE=1
+          }
+          test "$TUPLES" -lt 3 && SKIP=1
+          true
+        }
+      } || {
+        $ECHO "$RED[!] llvm_mode test-dlopen instrumentation failed"
+        CODE=1
+      }
+    } || {
+      $ECHO "$RED[!] llvm_mode test-dlopen compilation failed"
+      CODE=1
+    }
+    rm -f test-dlopen.plain test-dlopen.plain.0 test-dlopen.plain.1 test-instr.so
+  } || {
+    $ECHO "$RED[!] llvm_mode shared object with -z defs compilation failed"
+    CODE=1
+  }
   test -e test-compcov.harden && test_compcov_binary_functionality ./test-compcov.harden && {
     grep -Eq$GREPAOPTION 'stack_chk_fail|fstack-protector-all|fortified' test-compcov.harden > /dev/null 2>&1 && {
       $ECHO "$GREEN[+] llvm_mode hardened mode succeeded and is working"