Import fuzzer drivers

Originally from https://github.com/randombit/botan-fuzzers but
merging to the main tree (without the corpus files, since I suspect
the corpus files in that repo are not useful anymore)

Adds --unsafe-fuzzer-mode which can be used to selectively disable
cryptographic checks which get in the way of fuzzer testing. This
setting is reflected in build.h and in the version string. Right
now it doesn't actually disable anything.

1 files changed, 9 insertions, 4 deletions

diff --git a/configure.py b/configure.py
index a860c9664..51ca56a8f 100755
--- a/configure.py
+++ b/configure.py
@@ -381,6 +381,9 @@ def process_command_line(args):
     mods_group.add_option('--minimized-build', action='store_true', dest='no_autoload',
                           help='minimize build')
 
+    mods_group.add_option('--unsafe-fuzzer-mode', action='store_true',
+                          help='disable checks for fuzz testing')
+
     # Should be derived from info.txt but this runs too early
     third_party  = ['boost', 'bzip2', 'lzma', 'openssl', 'sqlite3', 'zlib', 'tpm', 'pkcs11']
 
@@ -1362,6 +1365,8 @@ def create_template_vars(build_config, options, modules, cc, arch, osinfo):
 
         'include_files': makefile_list(build_config.public_headers),
 
+        'unsafe_fuzzer_mode_define': '' if not options.unsafe_fuzzer_mode else '#define BOTAN_UNSAFE_FUZZER_MODE',
+
         'ar_command': cc.ar_command or osinfo.ar_command,
         'ranlib_command': osinfo.ranlib_command(),
         'install_cmd_exec': osinfo.install_cmd_exec,
@@ -1417,13 +1422,13 @@ def create_template_vars(build_config, options, modules, cc, arch, osinfo):
         else:
             vars['libname'] = 'botan'
 
-    vars["header_in"] = process_template('src/build-data/makefile/header.in', vars)
+    vars["header_in"] = process_template(os.path.join(options.makefile_dir, 'header.in'), vars)
 
     if vars["makefile_style"] == "gmake":
-        vars["gmake_commands_in"] = process_template('src/build-data/makefile/gmake_commands.in', vars)
-        vars["gmake_dso_in"]      = process_template('src/build-data/makefile/gmake_dso.in', vars) \
+        vars["gmake_commands_in"] = process_template(os.path.join(options.makefile_dir, 'gmake_commands.in'), vars)
+        vars["gmake_dso_in"]      = process_template(os.path.join(options.makefile_dir, 'gmake_dso.in'), vars) \
                                     if options.build_shared_lib else ''
-        vars["gmake_coverage_in"] = process_template('src/build-data/makefile/gmake_coverage.in', vars) \
+        vars["gmake_coverage_in"] = process_template(os.path.join(options.makefile_dir, 'gmake_coverage.in'), vars) \
                                     if options.with_coverage else ''
 
     return vars