Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 87 insertions, 0 deletions

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+# Fuzzing Samba
+
+See also https://wiki.samba.org/index.php/Fuzzing
+
+Fuzzing supplies valid, invalid, unexpected or random data as input to a piece
+of code. Instrumentation, usually compiler-implemented, is used to monitor for
+exceptions such as crashes, assertions or memory corruption.
+
+See [Wikipedia article on fuzzing](https://en.wikipedia.org/wiki/Fuzzing) for
+more information.
+
+# Honggfuzz
+
+## Configure with fuzzing
+
+Example command line to build binaries for use with
+[honggfuzz](https://github.com/google/honggfuzz/):
+
+```sh
+./configure -C --without-gettext --enable-debug --enable-developer \
+	--address-sanitizer --enable-libfuzzer --abi-check-disable \
+	CC=.../honggfuzz/hfuzz_cc/hfuzz-clang \
+	LINK_CC=.../honggfuzz/hfuzz_cc/hfuzz-clang
+```
+
+
+## Fuzzing tiniparser
+
+Example for fuzzing `tiniparser` using `honggfuzz` (see `--help` for more
+options):
+
+```sh
+make bin/fuzz_tiniparser && \
+.../honggfuzz/honggfuzz --sanitizers --timeout 3 --max_file_size 256 \
+  --rlimit_rss 100 -f .../tiniparser-corpus -- bin/fuzz_tiniparser
+```
+
+# AFL (american fuzzy lop)
+
+## Configure with fuzzing
+
+Example command line to build binaries for use with
+[afl](http://lcamtuf.coredump.cx/afl/)
+
+```sh
+./configure -C --without-gettext --enable-debug --enable-developer \
+	--enable-afl-fuzzer --abi-check-disable \
+	CC=afl-gcc
+```
+
+## Fuzzing tiniparser
+
+Example for fuzzing `tiniparser` using `afl-fuzz` (see `--help` for more
+options):
+
+```sh
+make bin/fuzz_tiniparser build && \
+afl-fuzz -m 200 -i inputdir -o outputdir -- bin/fuzz_tiniparser
+```
+
+# oss-fuzz
+
+Samba can be fuzzed by Google's oss-fuzz system.  Assuming you have an
+oss-fuzz checkout from https://github.com/google/oss-fuzz with Samba's
+metadata in projects/samba, the following guides will help:
+
+## Testing locally
+
+https://google.github.io/oss-fuzz/getting-started/new-project-guide/#testing-locally
+
+## Debugging oss-fuzz
+
+See https://google.github.io/oss-fuzz/advanced-topics/debugging/
+
+## Samba-specific hints
+
+A typical debugging workflow is:
+
+oss-fuzz$ python infra/helper.py shell samba
+git fetch $REMOTE $BRANCH
+git checkout FETCH_HEAD
+lib/fuzzing/oss-fuzz/build_image.sh
+compile
+
+This will pull in any new Samba deps and build Samba's fuzzers.
+
+# vim: set sw=8 sts=8 ts=8 tw=79 :