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Support fuzz testing (#4)

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Quickstart (requires Clang 6 or later):

$ export LIB_FUZZING_ENGINE=/path/to/fuzzing/library.a
$ ./configure --enable-fuzz-testing
$ make
$ cd src/fuzz
$ make fuzz_mdb
$ ./fuzz_mdb

Also add a new `mdb_open_buffer function` to facilitate in-memory
fuzz-testing. This requires fmemopen, which may not be present on all
systems. The internal API has been reworked to use file streams instead
of file descriptors. This allows reading from memory and reading from
files using a consistent API.
This commit is contained in:
Evan Miller
2020-08-31 13:03:58 -04:00
committed by GitHub
parent 8b40423f65
commit be888e0dd7
12 changed files with 194 additions and 89 deletions
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4
include/mdbtools.h
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@@ -225,9 +225,8 @@ typedef struct {
} MdbStatistics;
typedef struct {
int fd;
FILE *stream;
gboolean writable;
char *filename;
guint32 jet_version;
guint32 db_key;
char db_passwd[14];
@@ -463,6 +462,7 @@ long mdb_pg_get_int32(MdbHandle *mdb, int offset);
float mdb_pg_get_single(MdbHandle *mdb, int offset);
double mdb_pg_get_double(MdbHandle *mdb, int offset);
MdbHandle *mdb_open(const char *filename, MdbFileFlags flags);
MdbHandle *mdb_open_buffer(void *buffer, size_t len, MdbFileFlags flags);
void mdb_close(MdbHandle *mdb);
MdbHandle *mdb_clone_handle(MdbHandle *mdb);
void mdb_swap_pgbuf(MdbHandle *mdb);